./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_06-cond_racing1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ade695-0633-4f8e-8e7f-6e3bbd13bb3a/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ade695-0633-4f8e-8e7f-6e3bbd13bb3a/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_d0ade695-0633-4f8e-8e7f-6e3bbd13bb3a/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ade695-0633-4f8e-8e7f-6e3bbd13bb3a/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_06-cond_racing1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ade695-0633-4f8e-8e7f-6e3bbd13bb3a/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_d0ade695-0633-4f8e-8e7f-6e3bbd13bb3a/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 830cb16a3cbc120e059f0ed7638e33ed20360a11f425952cf536aa3d659b86fc --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 11:53:31,402 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 11:53:31,517 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ade695-0633-4f8e-8e7f-6e3bbd13bb3a/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-26 11:53:31,528 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 11:53:31,529 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 11:53:31,566 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 11:53:31,568 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 11:53:31,569 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 11:53:31,570 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 11:53:31,579 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 11:53:31,580 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 11:53:31,580 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 11:53:31,581 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 11:53:31,583 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 11:53:31,583 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 11:53:31,583 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 11:53:31,584 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 11:53:31,584 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 11:53:31,585 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 11:53:31,585 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 11:53:31,585 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 11:53:31,586 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 11:53:31,586 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 11:53:31,587 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 11:53:31,587 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-26 11:53:31,588 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 11:53:31,588 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 11:53:31,589 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 11:53:31,589 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 11:53:31,590 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 11:53:31,591 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 11:53:31,592 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 11:53:31,592 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 11:53:31,592 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:53:31,592 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 11:53:31,593 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 11:53:31,593 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 11:53:31,593 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 11:53:31,593 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 11:53:31,594 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 11:53:31,594 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 11:53:31,594 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 11:53:31,594 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 11:53:31,595 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 11:53:31,595 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_d0ade695-0633-4f8e-8e7f-6e3bbd13bb3a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ade695-0633-4f8e-8e7f-6e3bbd13bb3a/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 830cb16a3cbc120e059f0ed7638e33ed20360a11f425952cf536aa3d659b86fc [2023-11-26 11:53:31,892 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 11:53:31,925 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 11:53:31,927 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 11:53:31,929 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 11:53:31,929 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 11:53:31,931 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ade695-0633-4f8e-8e7f-6e3bbd13bb3a/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/goblint-regression/28-race_reach_06-cond_racing1.i [2023-11-26 11:53:35,082 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 11:53:35,406 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 11:53:35,407 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ade695-0633-4f8e-8e7f-6e3bbd13bb3a/sv-benchmarks/c/goblint-regression/28-race_reach_06-cond_racing1.i [2023-11-26 11:53:35,442 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ade695-0633-4f8e-8e7f-6e3bbd13bb3a/bin/uautomizer-verify-VRDe98Ueme/data/bf9255b7e/bde381cadbf142ceb5c2f3aa353f7bf6/FLAG63b4392c8 [2023-11-26 11:53:35,457 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ade695-0633-4f8e-8e7f-6e3bbd13bb3a/bin/uautomizer-verify-VRDe98Ueme/data/bf9255b7e/bde381cadbf142ceb5c2f3aa353f7bf6 [2023-11-26 11:53:35,459 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 11:53:35,461 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 11:53:35,462 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 11:53:35,463 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 11:53:35,468 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 11:53:35,469 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:53:35" (1/1) ... [2023-11-26 11:53:35,471 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48faf686 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:53:35, skipping insertion in model container [2023-11-26 11:53:35,471 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:53:35" (1/1) ... [2023-11-26 11:53:35,552 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 11:53:36,138 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:53:36,156 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 11:53:36,220 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:53:36,329 INFO L206 MainTranslator]: Completed translation [2023-11-26 11:53:36,329 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:53:36 WrapperNode [2023-11-26 11:53:36,330 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 11:53:36,331 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 11:53:36,331 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 11:53:36,331 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 11:53:36,339 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:53:36" (1/1) ... [2023-11-26 11:53:36,409 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:53:36" (1/1) ... [2023-11-26 11:53:36,436 INFO L138 Inliner]: procedures = 271, calls = 42, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 103 [2023-11-26 11:53:36,436 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 11:53:36,437 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 11:53:36,437 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 11:53:36,438 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 11:53:36,450 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:53:36" (1/1) ... [2023-11-26 11:53:36,450 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:53:36" (1/1) ... [2023-11-26 11:53:36,454 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:53:36" (1/1) ... [2023-11-26 11:53:36,471 INFO L175 MemorySlicer]: Split 19 memory accesses to 5 slices as follows [2, 5, 5, 5, 2]. 26 percent of accesses are in the largest equivalence class. The 17 initializations are split as follows [2, 5, 5, 5, 0]. The 1 writes are split as follows [0, 0, 0, 0, 1]. [2023-11-26 11:53:36,472 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:53:36" (1/1) ... [2023-11-26 11:53:36,472 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:53:36" (1/1) ... [2023-11-26 11:53:36,480 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:53:36" (1/1) ... [2023-11-26 11:53:36,484 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:53:36" (1/1) ... [2023-11-26 11:53:36,487 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:53:36" (1/1) ... [2023-11-26 11:53:36,489 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:53:36" (1/1) ... [2023-11-26 11:53:36,493 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 11:53:36,494 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 11:53:36,494 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 11:53:36,495 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 11:53:36,497 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:53:36" (1/1) ... [2023-11-26 11:53:36,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:53:36,520 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ade695-0633-4f8e-8e7f-6e3bbd13bb3a/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:53:36,534 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ade695-0633-4f8e-8e7f-6e3bbd13bb3a/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 11:53:36,559 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ade695-0633-4f8e-8e7f-6e3bbd13bb3a/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 11:53:36,590 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 11:53:36,591 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 11:53:36,591 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-26 11:53:36,591 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-26 11:53:36,591 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-26 11:53:36,591 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-26 11:53:36,591 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-26 11:53:36,592 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-26 11:53:36,592 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-26 11:53:36,592 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-26 11:53:36,592 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-26 11:53:36,592 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-26 11:53:36,593 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-26 11:53:36,593 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-26 11:53:36,593 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 11:53:36,593 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-26 11:53:36,593 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-26 11:53:36,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 11:53:36,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-26 11:53:36,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-26 11:53:36,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-26 11:53:36,595 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-26 11:53:36,595 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 11:53:36,595 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 11:53:36,597 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 11:53:36,767 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 11:53:36,769 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 11:53:37,045 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 11:53:37,277 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 11:53:37,278 INFO L309 CfgBuilder]: Removed 10 assume(true) statements. [2023-11-26 11:53:37,279 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:53:37 BoogieIcfgContainer [2023-11-26 11:53:37,279 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 11:53:37,285 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 11:53:37,285 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 11:53:37,289 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 11:53:37,290 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 11:53:35" (1/3) ... [2023-11-26 11:53:37,291 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3539d198 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:53:37, skipping insertion in model container [2023-11-26 11:53:37,291 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:53:36" (2/3) ... [2023-11-26 11:53:37,292 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3539d198 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:53:37, skipping insertion in model container [2023-11-26 11:53:37,293 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:53:37" (3/3) ... [2023-11-26 11:53:37,295 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_06-cond_racing1.i [2023-11-26 11:53:37,304 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-26 11:53:37,316 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 11:53:37,317 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-11-26 11:53:37,317 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-26 11:53:37,376 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-26 11:53:37,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 60 places, 69 transitions, 145 flow [2023-11-26 11:53:37,481 INFO L124 PetriNetUnfolderBase]: 17/93 cut-off events. [2023-11-26 11:53:37,481 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-26 11:53:37,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98 conditions, 93 events. 17/93 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 309 event pairs, 0 based on Foata normal form. 0/65 useless extension candidates. Maximal degree in co-relation 60. Up to 6 conditions per place. [2023-11-26 11:53:37,487 INFO L82 GeneralOperation]: Start removeDead. Operand has 60 places, 69 transitions, 145 flow [2023-11-26 11:53:37,491 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 60 places, 68 transitions, 143 flow [2023-11-26 11:53:37,501 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:53:37,508 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;@1783e003, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:53:37,508 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2023-11-26 11:53:37,514 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 11:53:37,514 INFO L124 PetriNetUnfolderBase]: 1/12 cut-off events. [2023-11-26 11:53:37,515 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 11:53:37,518 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:53:37,519 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-26 11:53:37,520 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-26 11:53:37,527 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:53:37,527 INFO L85 PathProgramCache]: Analyzing trace with hash 372461756, now seen corresponding path program 1 times [2023-11-26 11:53:37,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:53:37,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384051418] [2023-11-26 11:53:37,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:53:37,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:53:37,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:53:37,997 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 11:53:37,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:53:37,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384051418] [2023-11-26 11:53:37,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384051418] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:53:38,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:53:38,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:53:38,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525643996] [2023-11-26 11:53:38,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:53:38,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:53:38,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:53:38,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:53:38,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:53:38,071 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 69 [2023-11-26 11:53:38,075 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 68 transitions, 143 flow. Second operand has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 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 11:53:38,075 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:53:38,075 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 69 [2023-11-26 11:53:38,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:53:38,288 INFO L124 PetriNetUnfolderBase]: 157/466 cut-off events. [2023-11-26 11:53:38,289 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-26 11:53:38,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 741 conditions, 466 events. 157/466 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 2508 event pairs, 0 based on Foata normal form. 72/475 useless extension candidates. Maximal degree in co-relation 710. Up to 233 conditions per place. [2023-11-26 11:53:38,298 INFO L140 encePairwiseOnDemand]: 55/69 looper letters, 46 selfloop transitions, 3 changer transitions 0/81 dead transitions. [2023-11-26 11:53:38,298 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 81 transitions, 267 flow [2023-11-26 11:53:38,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:53:38,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 11:53:38,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 200 transitions. [2023-11-26 11:53:38,313 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7246376811594203 [2023-11-26 11:53:38,314 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 200 transitions. [2023-11-26 11:53:38,314 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 200 transitions. [2023-11-26 11:53:38,316 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:53:38,318 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 200 transitions. [2023-11-26 11:53:38,321 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 50.0) internal successors, (200), 4 states have internal predecessors, (200), 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 11:53:38,326 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 69.0) internal successors, (345), 5 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 11:53:38,327 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 69.0) internal successors, (345), 5 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 11:53:38,329 INFO L175 Difference]: Start difference. First operand has 60 places, 68 transitions, 143 flow. Second operand 4 states and 200 transitions. [2023-11-26 11:53:38,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 81 transitions, 267 flow [2023-11-26 11:53:38,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 81 transitions, 267 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-26 11:53:38,337 INFO L231 Difference]: Finished difference. Result has 62 places, 58 transitions, 133 flow [2023-11-26 11:53:38,339 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=123, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=133, PETRI_PLACES=62, PETRI_TRANSITIONS=58} [2023-11-26 11:53:38,343 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 2 predicate places. [2023-11-26 11:53:38,343 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 58 transitions, 133 flow [2023-11-26 11:53:38,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 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 11:53:38,344 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:53:38,344 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-11-26 11:53:38,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 11:53:38,345 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-26 11:53:38,345 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:53:38,345 INFO L85 PathProgramCache]: Analyzing trace with hash 2108045562, now seen corresponding path program 1 times [2023-11-26 11:53:38,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:53:38,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392628969] [2023-11-26 11:53:38,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:53:38,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:53:38,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:53:38,375 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 11:53:38,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:53:38,440 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 11:53:38,441 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-26 11:53:38,442 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2023-11-26 11:53:38,444 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2023-11-26 11:53:38,445 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2023-11-26 11:53:38,445 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2023-11-26 11:53:38,446 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2023-11-26 11:53:38,446 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2023-11-26 11:53:38,447 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 13 remaining) [2023-11-26 11:53:38,447 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2023-11-26 11:53:38,448 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2023-11-26 11:53:38,449 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2023-11-26 11:53:38,449 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2023-11-26 11:53:38,450 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2023-11-26 11:53:38,450 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2023-11-26 11:53:38,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-26 11:53:38,451 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-26 11:53:38,455 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-26 11:53:38,456 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-26 11:53:38,487 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-26 11:53:38,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 88 places, 102 transitions, 220 flow [2023-11-26 11:53:38,520 INFO L124 PetriNetUnfolderBase]: 30/169 cut-off events. [2023-11-26 11:53:38,521 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-26 11:53:38,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181 conditions, 169 events. 30/169 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 660 event pairs, 0 based on Foata normal form. 0/117 useless extension candidates. Maximal degree in co-relation 101. Up to 9 conditions per place. [2023-11-26 11:53:38,523 INFO L82 GeneralOperation]: Start removeDead. Operand has 88 places, 102 transitions, 220 flow [2023-11-26 11:53:38,526 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 88 places, 102 transitions, 220 flow [2023-11-26 11:53:38,528 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:53:38,530 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;@1783e003, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:53:38,530 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2023-11-26 11:53:38,533 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 11:53:38,534 INFO L124 PetriNetUnfolderBase]: 1/12 cut-off events. [2023-11-26 11:53:38,534 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 11:53:38,534 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:53:38,534 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-26 11:53:38,535 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-26 11:53:38,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:53:38,535 INFO L85 PathProgramCache]: Analyzing trace with hash 469830657, now seen corresponding path program 1 times [2023-11-26 11:53:38,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:53:38,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446732878] [2023-11-26 11:53:38,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:53:38,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:53:38,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:53:38,648 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 11:53:38,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:53:38,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446732878] [2023-11-26 11:53:38,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446732878] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:53:38,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:53:38,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:53:38,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690801701] [2023-11-26 11:53:38,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:53:38,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:53:38,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:53:38,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:53:38,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:53:38,666 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 102 [2023-11-26 11:53:38,667 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 102 transitions, 220 flow. Second operand has 4 states, 4 states have (on average 47.25) internal successors, (189), 4 states have internal predecessors, (189), 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 11:53:38,667 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:53:38,668 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 102 [2023-11-26 11:53:38,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:53:40,215 INFO L124 PetriNetUnfolderBase]: 3919/8708 cut-off events. [2023-11-26 11:53:40,215 INFO L125 PetriNetUnfolderBase]: For 92/92 co-relation queries the response was YES. [2023-11-26 11:53:40,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14802 conditions, 8708 events. 3919/8708 cut-off events. For 92/92 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 78056 event pairs, 1771 based on Foata normal form. 1563/9180 useless extension candidates. Maximal degree in co-relation 1172. Up to 5990 conditions per place. [2023-11-26 11:53:40,299 INFO L140 encePairwiseOnDemand]: 82/102 looper letters, 64 selfloop transitions, 3 changer transitions 0/113 dead transitions. [2023-11-26 11:53:40,299 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 113 transitions, 376 flow [2023-11-26 11:53:40,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:53:40,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 11:53:40,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 280 transitions. [2023-11-26 11:53:40,307 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6862745098039216 [2023-11-26 11:53:40,307 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 280 transitions. [2023-11-26 11:53:40,307 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 280 transitions. [2023-11-26 11:53:40,309 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:53:40,309 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 280 transitions. [2023-11-26 11:53:40,312 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 70.0) internal successors, (280), 4 states have internal predecessors, (280), 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 11:53:40,315 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 102.0) internal successors, (510), 5 states have internal predecessors, (510), 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 11:53:40,316 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 102.0) internal successors, (510), 5 states have internal predecessors, (510), 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 11:53:40,316 INFO L175 Difference]: Start difference. First operand has 88 places, 102 transitions, 220 flow. Second operand 4 states and 280 transitions. [2023-11-26 11:53:40,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 113 transitions, 376 flow [2023-11-26 11:53:40,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 113 transitions, 376 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-26 11:53:40,325 INFO L231 Difference]: Finished difference. Result has 93 places, 90 transitions, 216 flow [2023-11-26 11:53:40,325 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=216, PETRI_PLACES=93, PETRI_TRANSITIONS=90} [2023-11-26 11:53:40,326 INFO L281 CegarLoopForPetriNet]: 88 programPoint places, 5 predicate places. [2023-11-26 11:53:40,326 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 90 transitions, 216 flow [2023-11-26 11:53:40,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.25) internal successors, (189), 4 states have internal predecessors, (189), 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 11:53:40,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:53:40,327 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:53:40,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-26 11:53:40,328 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-26 11:53:40,328 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:53:40,329 INFO L85 PathProgramCache]: Analyzing trace with hash 57365041, now seen corresponding path program 1 times [2023-11-26 11:53:40,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:53:40,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686572473] [2023-11-26 11:53:40,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:53:40,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:53:40,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:53:40,439 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 11:53:40,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:53:40,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686572473] [2023-11-26 11:53:40,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686572473] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:53:40,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:53:40,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:53:40,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154381528] [2023-11-26 11:53:40,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:53:40,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:53:40,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:53:40,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:53:40,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:53:40,449 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 102 [2023-11-26 11:53:40,450 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 90 transitions, 216 flow. Second operand has 4 states, 4 states have (on average 47.75) internal successors, (191), 4 states have internal predecessors, (191), 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 11:53:40,450 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:53:40,450 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 102 [2023-11-26 11:53:40,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:53:42,372 INFO L124 PetriNetUnfolderBase]: 5348/11773 cut-off events. [2023-11-26 11:53:42,372 INFO L125 PetriNetUnfolderBase]: For 650/959 co-relation queries the response was YES. [2023-11-26 11:53:42,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20818 conditions, 11773 events. 5348/11773 cut-off events. For 650/959 co-relation queries the response was YES. Maximal size of possible extension queue 477. Compared 110157 event pairs, 1436 based on Foata normal form. 204/10777 useless extension candidates. Maximal degree in co-relation 17820. Up to 5471 conditions per place. [2023-11-26 11:53:42,474 INFO L140 encePairwiseOnDemand]: 93/102 looper letters, 125 selfloop transitions, 12 changer transitions 0/183 dead transitions. [2023-11-26 11:53:42,475 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 183 transitions, 730 flow [2023-11-26 11:53:42,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 11:53:42,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-26 11:53:42,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 365 transitions. [2023-11-26 11:53:42,477 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7156862745098039 [2023-11-26 11:53:42,477 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 365 transitions. [2023-11-26 11:53:42,478 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 365 transitions. [2023-11-26 11:53:42,478 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:53:42,478 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 365 transitions. [2023-11-26 11:53:42,480 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 73.0) internal successors, (365), 5 states have internal predecessors, (365), 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 11:53:42,482 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 102.0) internal successors, (612), 6 states have internal predecessors, (612), 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 11:53:42,483 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 102.0) internal successors, (612), 6 states have internal predecessors, (612), 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 11:53:42,483 INFO L175 Difference]: Start difference. First operand has 93 places, 90 transitions, 216 flow. Second operand 5 states and 365 transitions. [2023-11-26 11:53:42,484 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 183 transitions, 730 flow [2023-11-26 11:53:42,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 183 transitions, 726 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 11:53:42,492 INFO L231 Difference]: Finished difference. Result has 100 places, 101 transitions, 308 flow [2023-11-26 11:53:42,492 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=308, PETRI_PLACES=100, PETRI_TRANSITIONS=101} [2023-11-26 11:53:42,495 INFO L281 CegarLoopForPetriNet]: 88 programPoint places, 12 predicate places. [2023-11-26 11:53:42,496 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 101 transitions, 308 flow [2023-11-26 11:53:42,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.75) internal successors, (191), 4 states have internal predecessors, (191), 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 11:53:42,496 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:53:42,496 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2023-11-26 11:53:42,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-26 11:53:42,497 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-26 11:53:42,498 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:53:42,498 INFO L85 PathProgramCache]: Analyzing trace with hash -719888660, now seen corresponding path program 1 times [2023-11-26 11:53:42,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:53:42,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687349908] [2023-11-26 11:53:42,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:53:42,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:53:42,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:53:42,608 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:53:42,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:53:42,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687349908] [2023-11-26 11:53:42,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687349908] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:53:42,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1030186472] [2023-11-26 11:53:42,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:53:42,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:53:42,610 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ade695-0633-4f8e-8e7f-6e3bbd13bb3a/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:53:42,614 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ade695-0633-4f8e-8e7f-6e3bbd13bb3a/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:53:42,628 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ade695-0633-4f8e-8e7f-6e3bbd13bb3a/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 11:53:42,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:53:42,749 INFO L262 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-26 11:53:42,751 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:53:42,818 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:53:42,819 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:53:42,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1030186472] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:53:42,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:53:42,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-11-26 11:53:42,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661353931] [2023-11-26 11:53:42,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:53:42,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 11:53:42,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:53:42,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 11:53:42,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-26 11:53:42,836 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 102 [2023-11-26 11:53:42,837 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 101 transitions, 308 flow. Second operand has 6 states, 6 states have (on average 47.5) internal successors, (285), 6 states have internal predecessors, (285), 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 11:53:42,837 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:53:42,837 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 102 [2023-11-26 11:53:42,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:53:44,778 INFO L124 PetriNetUnfolderBase]: 5800/12608 cut-off events. [2023-11-26 11:53:44,779 INFO L125 PetriNetUnfolderBase]: For 3486/3494 co-relation queries the response was YES. [2023-11-26 11:53:44,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24402 conditions, 12608 events. 5800/12608 cut-off events. For 3486/3494 co-relation queries the response was YES. Maximal size of possible extension queue 391. Compared 113671 event pairs, 491 based on Foata normal form. 160/11205 useless extension candidates. Maximal degree in co-relation 21034. Up to 6317 conditions per place. [2023-11-26 11:53:44,891 INFO L140 encePairwiseOnDemand]: 97/102 looper letters, 125 selfloop transitions, 6 changer transitions 0/177 dead transitions. [2023-11-26 11:53:44,891 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 177 transitions, 804 flow [2023-11-26 11:53:44,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 11:53:44,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-26 11:53:44,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 387 transitions. [2023-11-26 11:53:44,894 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6323529411764706 [2023-11-26 11:53:44,895 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 387 transitions. [2023-11-26 11:53:44,895 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 387 transitions. [2023-11-26 11:53:44,895 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:53:44,896 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 387 transitions. [2023-11-26 11:53:44,897 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 64.5) internal successors, (387), 6 states have internal predecessors, (387), 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 11:53:44,900 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 102.0) internal successors, (714), 7 states have internal predecessors, (714), 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 11:53:44,901 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 102.0) internal successors, (714), 7 states have internal predecessors, (714), 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 11:53:44,901 INFO L175 Difference]: Start difference. First operand has 100 places, 101 transitions, 308 flow. Second operand 6 states and 387 transitions. [2023-11-26 11:53:44,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 177 transitions, 804 flow [2023-11-26 11:53:44,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 177 transitions, 804 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-26 11:53:44,918 INFO L231 Difference]: Finished difference. Result has 104 places, 100 transitions, 316 flow [2023-11-26 11:53:44,918 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=316, PETRI_PLACES=104, PETRI_TRANSITIONS=100} [2023-11-26 11:53:44,919 INFO L281 CegarLoopForPetriNet]: 88 programPoint places, 16 predicate places. [2023-11-26 11:53:44,920 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 100 transitions, 316 flow [2023-11-26 11:53:44,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 47.5) internal successors, (285), 6 states have internal predecessors, (285), 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 11:53:44,920 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:53:44,921 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2023-11-26 11:53:44,931 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ade695-0633-4f8e-8e7f-6e3bbd13bb3a/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-26 11:53:45,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ade695-0633-4f8e-8e7f-6e3bbd13bb3a/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:53:45,129 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-26 11:53:45,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:53:45,129 INFO L85 PathProgramCache]: Analyzing trace with hash -841711476, now seen corresponding path program 1 times [2023-11-26 11:53:45,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:53:45,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163278941] [2023-11-26 11:53:45,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:53:45,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:53:45,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:53:45,242 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-26 11:53:45,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:53:45,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163278941] [2023-11-26 11:53:45,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163278941] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:53:45,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:53:45,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:53:45,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758528246] [2023-11-26 11:53:45,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:53:45,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:53:45,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:53:45,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:53:45,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:53:45,256 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 102 [2023-11-26 11:53:45,257 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 100 transitions, 316 flow. Second operand has 4 states, 4 states have (on average 48.25) internal successors, (193), 4 states have internal predecessors, (193), 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 11:53:45,257 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:53:45,257 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 102 [2023-11-26 11:53:45,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:53:47,008 INFO L124 PetriNetUnfolderBase]: 5500/12011 cut-off events. [2023-11-26 11:53:47,009 INFO L125 PetriNetUnfolderBase]: For 4047/4051 co-relation queries the response was YES. [2023-11-26 11:53:47,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23580 conditions, 12011 events. 5500/12011 cut-off events. For 4047/4051 co-relation queries the response was YES. Maximal size of possible extension queue 365. Compared 107268 event pairs, 487 based on Foata normal form. 152/10807 useless extension candidates. Maximal degree in co-relation 20358. Up to 6781 conditions per place. [2023-11-26 11:53:47,097 INFO L140 encePairwiseOnDemand]: 97/102 looper letters, 102 selfloop transitions, 6 changer transitions 0/154 dead transitions. [2023-11-26 11:53:47,097 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 154 transitions, 702 flow [2023-11-26 11:53:47,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:53:47,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 11:53:47,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 270 transitions. [2023-11-26 11:53:47,100 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6617647058823529 [2023-11-26 11:53:47,100 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 270 transitions. [2023-11-26 11:53:47,100 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 270 transitions. [2023-11-26 11:53:47,100 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:53:47,100 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 270 transitions. [2023-11-26 11:53:47,102 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 67.5) internal successors, (270), 4 states have internal predecessors, (270), 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 11:53:47,103 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 102.0) internal successors, (510), 5 states have internal predecessors, (510), 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 11:53:47,103 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 102.0) internal successors, (510), 5 states have internal predecessors, (510), 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 11:53:47,104 INFO L175 Difference]: Start difference. First operand has 104 places, 100 transitions, 316 flow. Second operand 4 states and 270 transitions. [2023-11-26 11:53:47,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 154 transitions, 702 flow [2023-11-26 11:53:47,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 154 transitions, 686 flow, removed 3 selfloop flow, removed 5 redundant places. [2023-11-26 11:53:47,117 INFO L231 Difference]: Finished difference. Result has 102 places, 100 transitions, 316 flow [2023-11-26 11:53:47,117 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=296, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=316, PETRI_PLACES=102, PETRI_TRANSITIONS=100} [2023-11-26 11:53:47,120 INFO L281 CegarLoopForPetriNet]: 88 programPoint places, 14 predicate places. [2023-11-26 11:53:47,120 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 100 transitions, 316 flow [2023-11-26 11:53:47,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 48.25) internal successors, (193), 4 states have internal predecessors, (193), 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 11:53:47,121 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:53:47,121 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1] [2023-11-26 11:53:47,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-26 11:53:47,121 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-26 11:53:47,122 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:53:47,123 INFO L85 PathProgramCache]: Analyzing trace with hash -1430861681, now seen corresponding path program 1 times [2023-11-26 11:53:47,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:53:47,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752493520] [2023-11-26 11:53:47,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:53:47,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:53:47,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:53:47,153 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 11:53:47,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:53:47,186 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 11:53:47,187 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-26 11:53:47,187 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2023-11-26 11:53:47,187 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2023-11-26 11:53:47,188 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2023-11-26 11:53:47,188 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2023-11-26 11:53:47,188 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2023-11-26 11:53:47,190 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2023-11-26 11:53:47,191 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2023-11-26 11:53:47,191 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2023-11-26 11:53:47,194 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 17 remaining) [2023-11-26 11:53:47,195 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 17 remaining) [2023-11-26 11:53:47,196 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 17 remaining) [2023-11-26 11:53:47,196 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2023-11-26 11:53:47,196 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2023-11-26 11:53:47,197 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2023-11-26 11:53:47,197 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2023-11-26 11:53:47,199 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2023-11-26 11:53:47,199 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2023-11-26 11:53:47,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-26 11:53:47,200 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-11-26 11:53:47,200 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-26 11:53:47,201 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-26 11:53:47,253 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-26 11:53:47,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 116 places, 135 transitions, 297 flow [2023-11-26 11:53:47,293 INFO L124 PetriNetUnfolderBase]: 46/264 cut-off events. [2023-11-26 11:53:47,293 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-11-26 11:53:47,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 289 conditions, 264 events. 46/264 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1136 event pairs, 1 based on Foata normal form. 0/182 useless extension candidates. Maximal degree in co-relation 184. Up to 12 conditions per place. [2023-11-26 11:53:47,295 INFO L82 GeneralOperation]: Start removeDead. Operand has 116 places, 135 transitions, 297 flow [2023-11-26 11:53:47,299 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 116 places, 135 transitions, 297 flow [2023-11-26 11:53:47,301 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:53:47,303 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;@1783e003, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:53:47,304 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2023-11-26 11:53:47,306 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 11:53:47,307 INFO L124 PetriNetUnfolderBase]: 1/11 cut-off events. [2023-11-26 11:53:47,307 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 11:53:47,307 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:53:47,307 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-26 11:53:47,307 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-26 11:53:47,308 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:53:47,308 INFO L85 PathProgramCache]: Analyzing trace with hash 598691623, now seen corresponding path program 1 times [2023-11-26 11:53:47,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:53:47,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618484623] [2023-11-26 11:53:47,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:53:47,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:53:47,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:53:47,372 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 11:53:47,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:53:47,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618484623] [2023-11-26 11:53:47,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618484623] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:53:47,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:53:47,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:53:47,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724016941] [2023-11-26 11:53:47,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:53:47,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:53:47,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:53:47,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:53:47,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:53:47,384 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 135 [2023-11-26 11:53:47,384 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 135 transitions, 297 flow. Second operand has 4 states, 4 states have (on average 61.25) internal successors, (245), 4 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 11:53:47,385 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:53:47,385 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 135 [2023-11-26 11:53:47,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:54:00,820 INFO L124 PetriNetUnfolderBase]: 72894/132680 cut-off events. [2023-11-26 11:54:00,820 INFO L125 PetriNetUnfolderBase]: For 1911/1911 co-relation queries the response was YES. [2023-11-26 11:54:01,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 234571 conditions, 132680 events. 72894/132680 cut-off events. For 1911/1911 co-relation queries the response was YES. Maximal size of possible extension queue 3857. Compared 1441312 event pairs, 46946 based on Foata normal form. 28108/147298 useless extension candidates. Maximal degree in co-relation 15597. Up to 100729 conditions per place. [2023-11-26 11:54:01,821 INFO L140 encePairwiseOnDemand]: 109/135 looper letters, 77 selfloop transitions, 3 changer transitions 0/140 dead transitions. [2023-11-26 11:54:01,821 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 140 transitions, 467 flow [2023-11-26 11:54:01,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:54:01,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 11:54:01,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 355 transitions. [2023-11-26 11:54:01,824 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6574074074074074 [2023-11-26 11:54:01,824 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 355 transitions. [2023-11-26 11:54:01,824 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 355 transitions. [2023-11-26 11:54:01,824 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:54:01,825 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 355 transitions. [2023-11-26 11:54:01,826 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 88.75) internal successors, (355), 4 states have internal predecessors, (355), 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 11:54:01,828 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 135.0) internal successors, (675), 5 states have internal predecessors, (675), 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 11:54:01,828 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 135.0) internal successors, (675), 5 states have internal predecessors, (675), 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 11:54:01,829 INFO L175 Difference]: Start difference. First operand has 116 places, 135 transitions, 297 flow. Second operand 4 states and 355 transitions. [2023-11-26 11:54:01,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 140 transitions, 467 flow [2023-11-26 11:54:01,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 140 transitions, 467 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-26 11:54:01,835 INFO L231 Difference]: Finished difference. Result has 121 places, 117 transitions, 281 flow [2023-11-26 11:54:01,836 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=135, PETRI_DIFFERENCE_MINUEND_FLOW=257, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=281, PETRI_PLACES=121, PETRI_TRANSITIONS=117} [2023-11-26 11:54:01,838 INFO L281 CegarLoopForPetriNet]: 116 programPoint places, 5 predicate places. [2023-11-26 11:54:01,838 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 117 transitions, 281 flow [2023-11-26 11:54:01,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 61.25) internal successors, (245), 4 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 11:54:01,839 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:54:01,839 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2023-11-26 11:54:01,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-26 11:54:01,840 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-26 11:54:01,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:54:01,840 INFO L85 PathProgramCache]: Analyzing trace with hash 123823788, now seen corresponding path program 1 times [2023-11-26 11:54:01,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:54:01,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966875774] [2023-11-26 11:54:01,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:54:01,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:54:01,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:54:01,951 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:54:01,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:54:01,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966875774] [2023-11-26 11:54:01,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966875774] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:54:01,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1146892817] [2023-11-26 11:54:01,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:54:01,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:54:01,952 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ade695-0633-4f8e-8e7f-6e3bbd13bb3a/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:54:01,953 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ade695-0633-4f8e-8e7f-6e3bbd13bb3a/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:54:01,976 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ade695-0633-4f8e-8e7f-6e3bbd13bb3a/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-26 11:54:02,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:54:02,067 INFO L262 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-26 11:54:02,069 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:54:02,109 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:54:02,109 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:54:02,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1146892817] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:54:02,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:54:02,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-11-26 11:54:02,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860352593] [2023-11-26 11:54:02,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:54:02,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 11:54:02,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:54:02,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 11:54:02,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-26 11:54:02,120 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 135 [2023-11-26 11:54:02,120 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 117 transitions, 281 flow. Second operand has 6 states, 6 states have (on average 61.5) internal successors, (369), 6 states have internal predecessors, (369), 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 11:54:02,121 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:54:02,121 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 135 [2023-11-26 11:54:02,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:54:13,851 INFO L124 PetriNetUnfolderBase]: 72759/127335 cut-off events. [2023-11-26 11:54:13,851 INFO L125 PetriNetUnfolderBase]: For 7109/7109 co-relation queries the response was YES. [2023-11-26 11:54:14,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 229479 conditions, 127335 events. 72759/127335 cut-off events. For 7109/7109 co-relation queries the response was YES. Maximal size of possible extension queue 2834. Compared 1293247 event pairs, 12886 based on Foata normal form. 1872/117044 useless extension candidates. Maximal degree in co-relation 210260. Up to 60660 conditions per place. [2023-11-26 11:54:14,827 INFO L140 encePairwiseOnDemand]: 130/135 looper letters, 139 selfloop transitions, 6 changer transitions 0/205 dead transitions. [2023-11-26 11:54:14,827 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 205 transitions, 745 flow [2023-11-26 11:54:14,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 11:54:14,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-26 11:54:14,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 506 transitions. [2023-11-26 11:54:14,836 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6246913580246913 [2023-11-26 11:54:14,836 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 506 transitions. [2023-11-26 11:54:14,836 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 506 transitions. [2023-11-26 11:54:14,837 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:54:14,837 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 506 transitions. [2023-11-26 11:54:14,839 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 84.33333333333333) internal successors, (506), 6 states have internal predecessors, (506), 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 11:54:14,842 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 135.0) internal successors, (945), 7 states have internal predecessors, (945), 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 11:54:14,842 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 135.0) internal successors, (945), 7 states have internal predecessors, (945), 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 11:54:14,843 INFO L175 Difference]: Start difference. First operand has 121 places, 117 transitions, 281 flow. Second operand 6 states and 506 transitions. [2023-11-26 11:54:14,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 205 transitions, 745 flow [2023-11-26 11:54:14,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 205 transitions, 743 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 11:54:14,867 INFO L231 Difference]: Finished difference. Result has 124 places, 116 transitions, 287 flow [2023-11-26 11:54:14,868 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=135, PETRI_DIFFERENCE_MINUEND_FLOW=275, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=287, PETRI_PLACES=124, PETRI_TRANSITIONS=116} [2023-11-26 11:54:14,869 INFO L281 CegarLoopForPetriNet]: 116 programPoint places, 8 predicate places. [2023-11-26 11:54:14,870 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 116 transitions, 287 flow [2023-11-26 11:54:14,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 61.5) internal successors, (369), 6 states have internal predecessors, (369), 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 11:54:14,870 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:54:14,871 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:54:14,878 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ade695-0633-4f8e-8e7f-6e3bbd13bb3a/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-26 11:54:15,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ade695-0633-4f8e-8e7f-6e3bbd13bb3a/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:54:15,079 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-26 11:54:15,080 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:54:15,080 INFO L85 PathProgramCache]: Analyzing trace with hash 1925875344, now seen corresponding path program 1 times [2023-11-26 11:54:15,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:54:15,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307292904] [2023-11-26 11:54:15,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:54:15,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:54:15,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:54:15,402 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 11:54:15,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:54:15,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307292904] [2023-11-26 11:54:15,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307292904] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:54:15,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:54:15,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:54:15,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646134417] [2023-11-26 11:54:15,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:54:15,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:54:15,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:54:15,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:54:15,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:54:15,409 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 135 [2023-11-26 11:54:15,410 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 116 transitions, 287 flow. Second operand has 4 states, 4 states have (on average 61.75) internal successors, (247), 4 states have internal predecessors, (247), 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 11:54:15,410 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:54:15,410 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 135 [2023-11-26 11:54:15,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand