./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-more-buffer-mult.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab110389-7e48-4e46-bff2-d03ecdcb09fa/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab110389-7e48-4e46-bff2-d03ecdcb09fa/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_ab110389-7e48-4e46-bff2-d03ecdcb09fa/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab110389-7e48-4e46-bff2-d03ecdcb09fa/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-buffer-mult.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab110389-7e48-4e46-bff2-d03ecdcb09fa/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_ab110389-7e48-4e46-bff2-d03ecdcb09fa/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 e5124dd4a5a155d8a4e322a35428820633f9eccdd993e14120e650d1ba1fbebe --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 10:47:18,185 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 10:47:18,288 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab110389-7e48-4e46-bff2-d03ecdcb09fa/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-26 10:47:18,295 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 10:47:18,296 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 10:47:18,330 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 10:47:18,331 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 10:47:18,332 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 10:47:18,333 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 10:47:18,334 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 10:47:18,335 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 10:47:18,335 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 10:47:18,337 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 10:47:18,337 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 10:47:18,338 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 10:47:18,339 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 10:47:18,340 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 10:47:18,341 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 10:47:18,341 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 10:47:18,342 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 10:47:18,343 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 10:47:18,344 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 10:47:18,345 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 10:47:18,345 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 10:47:18,346 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-26 10:47:18,347 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 10:47:18,347 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 10:47:18,348 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 10:47:18,349 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 10:47:18,349 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 10:47:18,350 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 10:47:18,350 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 10:47:18,351 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 10:47:18,352 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:47:18,352 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 10:47:18,353 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 10:47:18,353 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 10:47:18,354 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 10:47:18,354 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 10:47:18,355 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 10:47:18,356 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 10:47:18,356 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 10:47:18,357 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 10:47:18,357 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 10:47:18,358 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_ab110389-7e48-4e46-bff2-d03ecdcb09fa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab110389-7e48-4e46-bff2-d03ecdcb09fa/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e5124dd4a5a155d8a4e322a35428820633f9eccdd993e14120e650d1ba1fbebe [2023-11-26 10:47:18,691 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 10:47:18,736 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 10:47:18,739 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 10:47:18,741 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 10:47:18,741 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 10:47:18,743 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab110389-7e48-4e46-bff2-d03ecdcb09fa/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/weaver/popl20-more-buffer-mult.wvr.c [2023-11-26 10:47:22,317 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 10:47:22,676 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 10:47:22,676 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab110389-7e48-4e46-bff2-d03ecdcb09fa/sv-benchmarks/c/weaver/popl20-more-buffer-mult.wvr.c [2023-11-26 10:47:22,692 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab110389-7e48-4e46-bff2-d03ecdcb09fa/bin/uautomizer-verify-VRDe98Ueme/data/761f0a925/c61db110ef264c6f9229eae788433522/FLAG39ba72a77 [2023-11-26 10:47:22,713 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab110389-7e48-4e46-bff2-d03ecdcb09fa/bin/uautomizer-verify-VRDe98Ueme/data/761f0a925/c61db110ef264c6f9229eae788433522 [2023-11-26 10:47:22,721 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 10:47:22,723 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 10:47:22,728 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 10:47:22,728 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 10:47:22,736 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 10:47:22,739 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:47:22" (1/1) ... [2023-11-26 10:47:22,741 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fd1ef8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:47:22, skipping insertion in model container [2023-11-26 10:47:22,741 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:47:22" (1/1) ... [2023-11-26 10:47:22,793 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 10:47:23,075 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:47:23,090 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 10:47:23,140 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:47:23,152 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 10:47:23,152 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 10:47:23,163 INFO L206 MainTranslator]: Completed translation [2023-11-26 10:47:23,163 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:47:23 WrapperNode [2023-11-26 10:47:23,164 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 10:47:23,165 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 10:47:23,166 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 10:47:23,166 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 10:47:23,176 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:47:23" (1/1) ... [2023-11-26 10:47:23,200 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:47:23" (1/1) ... [2023-11-26 10:47:23,261 INFO L138 Inliner]: procedures = 27, calls = 81, calls flagged for inlining = 19, calls inlined = 23, statements flattened = 368 [2023-11-26 10:47:23,270 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 10:47:23,271 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 10:47:23,271 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 10:47:23,271 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 10:47:23,285 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:47:23" (1/1) ... [2023-11-26 10:47:23,286 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:47:23" (1/1) ... [2023-11-26 10:47:23,293 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:47:23" (1/1) ... [2023-11-26 10:47:23,318 INFO L175 MemorySlicer]: Split 16 memory accesses to 6 slices as follows [2, 6, 2, 2, 2, 2]. 38 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0, 0]. The 6 writes are split as follows [0, 2, 1, 1, 1, 1]. [2023-11-26 10:47:23,318 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:47:23" (1/1) ... [2023-11-26 10:47:23,319 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:47:23" (1/1) ... [2023-11-26 10:47:23,336 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:47:23" (1/1) ... [2023-11-26 10:47:23,342 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:47:23" (1/1) ... [2023-11-26 10:47:23,346 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:47:23" (1/1) ... [2023-11-26 10:47:23,350 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:47:23" (1/1) ... [2023-11-26 10:47:23,356 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 10:47:23,358 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 10:47:23,358 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 10:47:23,358 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 10:47:23,359 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:47:23" (1/1) ... [2023-11-26 10:47:23,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:47:23,387 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab110389-7e48-4e46-bff2-d03ecdcb09fa/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:47:23,412 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab110389-7e48-4e46-bff2-d03ecdcb09fa/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 10:47:23,434 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab110389-7e48-4e46-bff2-d03ecdcb09fa/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 10:47:23,463 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 10:47:23,463 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 10:47:23,464 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-26 10:47:23,464 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-26 10:47:23,464 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-26 10:47:23,464 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-26 10:47:23,465 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-26 10:47:23,465 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-11-26 10:47:23,465 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-26 10:47:23,465 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-26 10:47:23,466 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-26 10:47:23,466 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-26 10:47:23,466 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-26 10:47:23,466 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-11-26 10:47:23,467 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-26 10:47:23,467 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-26 10:47:23,467 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-26 10:47:23,468 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-26 10:47:23,468 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-26 10:47:23,468 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-26 10:47:23,468 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-11-26 10:47:23,469 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-11-26 10:47:23,469 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 10:47:23,469 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-26 10:47:23,469 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-26 10:47:23,470 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-26 10:47:23,470 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-26 10:47:23,470 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-26 10:47:23,470 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-26 10:47:23,471 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-26 10:47:23,471 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-26 10:47:23,471 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 10:47:23,471 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 10:47:23,472 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 10:47:23,474 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-26 10:47:23,658 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 10:47:23,661 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 10:47:24,437 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 10:47:25,251 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 10:47:25,252 INFO L309 CfgBuilder]: Removed 6 assume(true) statements. [2023-11-26 10:47:25,252 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:47:25 BoogieIcfgContainer [2023-11-26 10:47:25,253 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 10:47:25,257 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 10:47:25,257 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 10:47:25,261 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 10:47:25,261 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 10:47:22" (1/3) ... [2023-11-26 10:47:25,262 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ecc91c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:47:25, skipping insertion in model container [2023-11-26 10:47:25,263 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:47:23" (2/3) ... [2023-11-26 10:47:25,264 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ecc91c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:47:25, skipping insertion in model container [2023-11-26 10:47:25,264 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:47:25" (3/3) ... [2023-11-26 10:47:25,266 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-buffer-mult.wvr.c [2023-11-26 10:47:25,276 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-26 10:47:25,289 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 10:47:25,289 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2023-11-26 10:47:25,289 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-26 10:47:25,486 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-26 10:47:25,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 92 places, 85 transitions, 198 flow [2023-11-26 10:47:25,629 INFO L124 PetriNetUnfolderBase]: 6/81 cut-off events. [2023-11-26 10:47:25,629 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-26 10:47:25,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98 conditions, 81 events. 6/81 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 275 event pairs, 0 based on Foata normal form. 0/45 useless extension candidates. Maximal degree in co-relation 65. Up to 2 conditions per place. [2023-11-26 10:47:25,635 INFO L82 GeneralOperation]: Start removeDead. Operand has 92 places, 85 transitions, 198 flow [2023-11-26 10:47:25,652 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 86 places, 79 transitions, 179 flow [2023-11-26 10:47:25,676 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 10:47:25,689 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;@cb12894, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 10:47:25,689 INFO L358 AbstractCegarLoop]: Starting to check reachability of 60 error locations. [2023-11-26 10:47:25,696 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 10:47:25,696 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2023-11-26 10:47:25,696 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 10:47:25,697 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:47:25,698 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-26 10:47:25,698 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-26 10:47:25,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:47:25,706 INFO L85 PathProgramCache]: Analyzing trace with hash 1110169, now seen corresponding path program 1 times [2023-11-26 10:47:25,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:47:25,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567895360] [2023-11-26 10:47:25,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:47:25,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:47:25,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:26,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:47:26,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:47:26,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567895360] [2023-11-26 10:47:26,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567895360] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:47:26,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:47:26,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 10:47:26,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967739275] [2023-11-26 10:47:26,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:47:26,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:47:26,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:47:26,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:47:26,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:47:26,202 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 85 [2023-11-26 10:47:26,205 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 79 transitions, 179 flow. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:47:26,205 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:47:26,205 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 85 [2023-11-26 10:47:26,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:47:37,086 INFO L124 PetriNetUnfolderBase]: 40357/54135 cut-off events. [2023-11-26 10:47:37,086 INFO L125 PetriNetUnfolderBase]: For 1242/1242 co-relation queries the response was YES. [2023-11-26 10:47:37,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106452 conditions, 54135 events. 40357/54135 cut-off events. For 1242/1242 co-relation queries the response was YES. Maximal size of possible extension queue 5593. Compared 396349 event pairs, 30313 based on Foata normal form. 2/25683 useless extension candidates. Maximal degree in co-relation 95328. Up to 50509 conditions per place. [2023-11-26 10:47:37,622 INFO L140 encePairwiseOnDemand]: 66/85 looper letters, 52 selfloop transitions, 7 changer transitions 0/77 dead transitions. [2023-11-26 10:47:37,622 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 77 transitions, 293 flow [2023-11-26 10:47:37,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 10:47:37,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 10:47:37,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 159 transitions. [2023-11-26 10:47:37,638 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4676470588235294 [2023-11-26 10:47:37,639 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 159 transitions. [2023-11-26 10:47:37,639 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 159 transitions. [2023-11-26 10:47:37,640 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:47:37,643 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 159 transitions. [2023-11-26 10:47:37,649 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:47:37,655 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 85.0) internal successors, (425), 5 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:47:37,656 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 85.0) internal successors, (425), 5 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:47:37,658 INFO L175 Difference]: Start difference. First operand has 86 places, 79 transitions, 179 flow. Second operand 4 states and 159 transitions. [2023-11-26 10:47:37,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 77 transitions, 293 flow [2023-11-26 10:47:37,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 77 transitions, 280 flow, removed 0 selfloop flow, removed 7 redundant places. [2023-11-26 10:47:37,794 INFO L231 Difference]: Finished difference. Result has 77 places, 77 transitions, 210 flow [2023-11-26 10:47:37,797 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=210, PETRI_PLACES=77, PETRI_TRANSITIONS=77} [2023-11-26 10:47:37,801 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -9 predicate places. [2023-11-26 10:47:37,801 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 77 transitions, 210 flow [2023-11-26 10:47:37,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:47:37,802 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:47:37,802 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-26 10:47:37,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 10:47:37,803 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-26 10:47:37,803 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:47:37,804 INFO L85 PathProgramCache]: Analyzing trace with hash -1285571988, now seen corresponding path program 1 times [2023-11-26 10:47:37,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:47:37,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592330503] [2023-11-26 10:47:37,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:47:37,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:47:37,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:38,049 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:47:38,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:47:38,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592330503] [2023-11-26 10:47:38,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592330503] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:47:38,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1777706235] [2023-11-26 10:47:38,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:47:38,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:47:38,053 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab110389-7e48-4e46-bff2-d03ecdcb09fa/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:47:38,057 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab110389-7e48-4e46-bff2-d03ecdcb09fa/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:47:38,086 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab110389-7e48-4e46-bff2-d03ecdcb09fa/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 10:47:38,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:38,245 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-26 10:47:38,250 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:47:38,311 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:47:38,312 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:47:38,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1777706235] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:47:38,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 10:47:38,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-11-26 10:47:38,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900067284] [2023-11-26 10:47:38,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:47:38,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 10:47:38,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:47:38,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 10:47:38,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-26 10:47:38,349 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 85 [2023-11-26 10:47:38,355 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 77 transitions, 210 flow. Second operand has 6 states, 6 states have (on average 22.833333333333332) internal successors, (137), 6 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:47:38,356 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:47:38,357 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 85 [2023-11-26 10:47:38,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:47:45,737 INFO L124 PetriNetUnfolderBase]: 40357/54133 cut-off events. [2023-11-26 10:47:45,737 INFO L125 PetriNetUnfolderBase]: For 201/201 co-relation queries the response was YES. [2023-11-26 10:47:45,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105750 conditions, 54133 events. 40357/54133 cut-off events. For 201/201 co-relation queries the response was YES. Maximal size of possible extension queue 5593. Compared 395903 event pairs, 30313 based on Foata normal form. 2/25684 useless extension candidates. Maximal degree in co-relation 105700. Up to 50499 conditions per place. [2023-11-26 10:47:46,171 INFO L140 encePairwiseOnDemand]: 76/85 looper letters, 45 selfloop transitions, 12 changer transitions 0/75 dead transitions. [2023-11-26 10:47:46,171 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 75 transitions, 316 flow [2023-11-26 10:47:46,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 10:47:46,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-26 10:47:46,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 191 transitions. [2023-11-26 10:47:46,407 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37450980392156863 [2023-11-26 10:47:46,407 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 191 transitions. [2023-11-26 10:47:46,408 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 191 transitions. [2023-11-26 10:47:46,408 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:47:46,408 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 191 transitions. [2023-11-26 10:47:46,410 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 31.833333333333332) internal successors, (191), 6 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 10:47:46,437 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 85.0) internal successors, (595), 7 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:47:46,438 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 85.0) internal successors, (595), 7 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:47:46,438 INFO L175 Difference]: Start difference. First operand has 77 places, 77 transitions, 210 flow. Second operand 6 states and 191 transitions. [2023-11-26 10:47:46,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 75 transitions, 316 flow [2023-11-26 10:47:46,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 75 transitions, 316 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-26 10:47:46,444 INFO L231 Difference]: Finished difference. Result has 80 places, 75 transitions, 226 flow [2023-11-26 10:47:46,445 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=226, PETRI_PLACES=80, PETRI_TRANSITIONS=75} [2023-11-26 10:47:46,446 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -6 predicate places. [2023-11-26 10:47:46,447 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 75 transitions, 226 flow [2023-11-26 10:47:46,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.833333333333332) internal successors, (137), 6 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:47:46,448 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:47:46,448 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2023-11-26 10:47:46,466 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab110389-7e48-4e46-bff2-d03ecdcb09fa/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-26 10:47:46,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab110389-7e48-4e46-bff2-d03ecdcb09fa/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-11-26 10:47:46,659 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-26 10:47:46,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:47:46,660 INFO L85 PathProgramCache]: Analyzing trace with hash -1198024834, now seen corresponding path program 1 times [2023-11-26 10:47:46,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:47:46,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409339990] [2023-11-26 10:47:46,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:47:46,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:47:46,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:46,858 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:47:46,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:47:46,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409339990] [2023-11-26 10:47:46,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409339990] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:47:46,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [313890189] [2023-11-26 10:47:46,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:47:46,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:47:46,861 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab110389-7e48-4e46-bff2-d03ecdcb09fa/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:47:46,862 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab110389-7e48-4e46-bff2-d03ecdcb09fa/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:47:46,886 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab110389-7e48-4e46-bff2-d03ecdcb09fa/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-26 10:47:47,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:47,046 INFO L262 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-26 10:47:47,049 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:47:47,087 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:47:47,087 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:47:47,139 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:47:47,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [313890189] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:47:47,140 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 10:47:47,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2023-11-26 10:47:47,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092535469] [2023-11-26 10:47:47,140 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 10:47:47,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-26 10:47:47,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:47:47,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-26 10:47:47,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-11-26 10:47:47,173 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 85 [2023-11-26 10:47:47,174 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 75 transitions, 226 flow. Second operand has 12 states, 12 states have (on average 23.083333333333332) internal successors, (277), 12 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:47:47,174 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:47:47,174 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 85 [2023-11-26 10:47:47,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:47:54,760 INFO L124 PetriNetUnfolderBase]: 40363/54157 cut-off events. [2023-11-26 10:47:54,760 INFO L125 PetriNetUnfolderBase]: For 243/243 co-relation queries the response was YES. [2023-11-26 10:47:54,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105844 conditions, 54157 events. 40363/54157 cut-off events. For 243/243 co-relation queries the response was YES. Maximal size of possible extension queue 5593. Compared 396248 event pairs, 30313 based on Foata normal form. 6/25711 useless extension candidates. Maximal degree in co-relation 105702. Up to 50510 conditions per place. [2023-11-26 10:47:55,267 INFO L140 encePairwiseOnDemand]: 76/85 looper letters, 50 selfloop transitions, 25 changer transitions 0/93 dead transitions. [2023-11-26 10:47:55,267 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 93 transitions, 490 flow [2023-11-26 10:47:55,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-26 10:47:55,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-26 10:47:55,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 301 transitions. [2023-11-26 10:47:55,276 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35411764705882354 [2023-11-26 10:47:55,276 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 301 transitions. [2023-11-26 10:47:55,276 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 301 transitions. [2023-11-26 10:47:55,277 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:47:55,277 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 301 transitions. [2023-11-26 10:47:55,280 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 30.1) internal successors, (301), 10 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:47:55,286 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 85.0) internal successors, (935), 11 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:47:55,288 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 85.0) internal successors, (935), 11 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:47:55,288 INFO L175 Difference]: Start difference. First operand has 80 places, 75 transitions, 226 flow. Second operand 10 states and 301 transitions. [2023-11-26 10:47:55,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 93 transitions, 490 flow [2023-11-26 10:47:55,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 93 transitions, 432 flow, removed 12 selfloop flow, removed 5 redundant places. [2023-11-26 10:47:55,295 INFO L231 Difference]: Finished difference. Result has 87 places, 93 transitions, 366 flow [2023-11-26 10:47:55,296 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=366, PETRI_PLACES=87, PETRI_TRANSITIONS=93} [2023-11-26 10:47:55,298 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 1 predicate places. [2023-11-26 10:47:55,298 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 93 transitions, 366 flow [2023-11-26 10:47:55,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 23.083333333333332) internal successors, (277), 12 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:47:55,299 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:47:55,299 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:47:55,306 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab110389-7e48-4e46-bff2-d03ecdcb09fa/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-26 10:47:55,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab110389-7e48-4e46-bff2-d03ecdcb09fa/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:47:55,505 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-26 10:47:55,506 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:47:55,506 INFO L85 PathProgramCache]: Analyzing trace with hash -1958691987, now seen corresponding path program 1 times [2023-11-26 10:47:55,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:47:55,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167031083] [2023-11-26 10:47:55,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:47:55,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:47:55,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:55,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:47:55,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:47:55,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167031083] [2023-11-26 10:47:55,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167031083] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:47:55,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:47:55,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 10:47:55,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424164071] [2023-11-26 10:47:55,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:47:55,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:47:55,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:47:55,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:47:55,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:47:55,733 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 85 [2023-11-26 10:47:55,733 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 93 transitions, 366 flow. Second operand has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:47:55,734 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:47:55,734 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 85 [2023-11-26 10:47:55,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:48:03,496 INFO L124 PetriNetUnfolderBase]: 43126/57330 cut-off events. [2023-11-26 10:48:03,496 INFO L125 PetriNetUnfolderBase]: For 160/160 co-relation queries the response was YES. [2023-11-26 10:48:03,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112930 conditions, 57330 events. 43126/57330 cut-off events. For 160/160 co-relation queries the response was YES. Maximal size of possible extension queue 5648. Compared 414732 event pairs, 32516 based on Foata normal form. 790/27784 useless extension candidates. Maximal degree in co-relation 112834. Up to 50525 conditions per place. [2023-11-26 10:48:03,913 INFO L140 encePairwiseOnDemand]: 72/85 looper letters, 114 selfloop transitions, 5 changer transitions 0/139 dead transitions. [2023-11-26 10:48:03,915 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 139 transitions, 777 flow [2023-11-26 10:48:03,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 10:48:03,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-26 10:48:03,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 227 transitions. [2023-11-26 10:48:03,918 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5341176470588235 [2023-11-26 10:48:03,918 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 227 transitions. [2023-11-26 10:48:03,918 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 227 transitions. [2023-11-26 10:48:03,919 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:48:03,919 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 227 transitions. [2023-11-26 10:48:03,920 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 45.4) internal successors, (227), 5 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:48:03,922 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 85.0) internal successors, (510), 6 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 10:48:03,923 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 85.0) internal successors, (510), 6 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 10:48:03,923 INFO L175 Difference]: Start difference. First operand has 87 places, 93 transitions, 366 flow. Second operand 5 states and 227 transitions. [2023-11-26 10:48:03,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 139 transitions, 777 flow [2023-11-26 10:48:03,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 139 transitions, 743 flow, removed 9 selfloop flow, removed 2 redundant places. [2023-11-26 10:48:03,932 INFO L231 Difference]: Finished difference. Result has 91 places, 95 transitions, 389 flow [2023-11-26 10:48:03,932 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=342, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=389, PETRI_PLACES=91, PETRI_TRANSITIONS=95} [2023-11-26 10:48:03,934 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 5 predicate places. [2023-11-26 10:48:03,934 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 95 transitions, 389 flow [2023-11-26 10:48:03,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:48:03,935 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:48:03,935 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:48:03,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-26 10:48:03,935 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-26 10:48:03,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:48:03,936 INFO L85 PathProgramCache]: Analyzing trace with hash 1638286495, now seen corresponding path program 1 times [2023-11-26 10:48:03,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:48:03,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278749870] [2023-11-26 10:48:03,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:48:03,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:48:03,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat