./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-bad-commit-2.wvr-bad.c --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_2b5a1ffa-7d8f-452e-91a7-1051090a572e/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b5a1ffa-7d8f-452e-91a7-1051090a572e/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_2b5a1ffa-7d8f-452e-91a7-1051090a572e/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b5a1ffa-7d8f-452e-91a7-1051090a572e/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-bad-commit-2.wvr-bad.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b5a1ffa-7d8f-452e-91a7-1051090a572e/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_2b5a1ffa-7d8f-452e-91a7-1051090a572e/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 5bf746ef76f8c8352051d8eb5f02d7a475e14d238622e290fcb51135a3348206 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 12:00:53,356 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 12:00:53,484 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b5a1ffa-7d8f-452e-91a7-1051090a572e/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-26 12:00:53,493 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 12:00:53,494 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 12:00:53,531 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 12:00:53,535 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 12:00:53,536 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 12:00:53,537 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 12:00:53,543 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 12:00:53,544 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 12:00:53,546 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 12:00:53,546 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 12:00:53,549 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 12:00:53,549 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 12:00:53,549 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 12:00:53,550 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 12:00:53,550 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 12:00:53,551 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 12:00:53,551 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 12:00:53,551 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 12:00:53,556 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 12:00:53,556 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 12:00:53,557 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 12:00:53,557 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-26 12:00:53,557 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 12:00:53,558 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 12:00:53,558 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 12:00:53,559 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 12:00:53,559 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 12:00:53,560 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 12:00:53,560 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 12:00:53,561 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 12:00:53,561 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 12:00:53,561 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 12:00:53,561 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 12:00:53,562 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 12:00:53,562 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 12:00:53,562 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 12:00:53,562 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 12:00:53,563 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 12:00:53,563 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 12:00:53,563 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 12:00:53,564 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 12:00:53,564 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_2b5a1ffa-7d8f-452e-91a7-1051090a572e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b5a1ffa-7d8f-452e-91a7-1051090a572e/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5bf746ef76f8c8352051d8eb5f02d7a475e14d238622e290fcb51135a3348206 [2023-11-26 12:00:53,876 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 12:00:53,910 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 12:00:53,912 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 12:00:53,914 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 12:00:53,915 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 12:00:53,916 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b5a1ffa-7d8f-452e-91a7-1051090a572e/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/weaver/popl20-bad-commit-2.wvr-bad.c [2023-11-26 12:00:57,142 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 12:00:57,404 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 12:00:57,404 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b5a1ffa-7d8f-452e-91a7-1051090a572e/sv-benchmarks/c/weaver/popl20-bad-commit-2.wvr-bad.c [2023-11-26 12:00:57,414 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b5a1ffa-7d8f-452e-91a7-1051090a572e/bin/uautomizer-verify-VRDe98Ueme/data/e99c24caf/8bef580b344a41ba8ad0cc5cdac78e92/FLAG246dfeb03 [2023-11-26 12:00:57,428 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b5a1ffa-7d8f-452e-91a7-1051090a572e/bin/uautomizer-verify-VRDe98Ueme/data/e99c24caf/8bef580b344a41ba8ad0cc5cdac78e92 [2023-11-26 12:00:57,431 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 12:00:57,432 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 12:00:57,434 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 12:00:57,434 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 12:00:57,439 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 12:00:57,440 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:00:57" (1/1) ... [2023-11-26 12:00:57,441 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43e6d080 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:57, skipping insertion in model container [2023-11-26 12:00:57,442 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:00:57" (1/1) ... [2023-11-26 12:00:57,475 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 12:00:57,712 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 12:00:57,723 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 12:00:57,769 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 12:00:57,779 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 12:00:57,779 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 12:00:57,786 INFO L206 MainTranslator]: Completed translation [2023-11-26 12:00:57,786 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:57 WrapperNode [2023-11-26 12:00:57,787 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 12:00:57,787 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 12:00:57,788 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 12:00:57,788 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 12:00:57,795 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:57" (1/1) ... [2023-11-26 12:00:57,808 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:57" (1/1) ... [2023-11-26 12:00:57,857 INFO L138 Inliner]: procedures = 26, calls = 94, calls flagged for inlining = 28, calls inlined = 34, statements flattened = 515 [2023-11-26 12:00:57,857 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 12:00:57,858 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 12:00:57,858 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 12:00:57,858 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 12:00:57,871 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:57" (1/1) ... [2023-11-26 12:00:57,871 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:57" (1/1) ... [2023-11-26 12:00:57,889 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:57" (1/1) ... [2023-11-26 12:00:57,923 INFO L175 MemorySlicer]: Split 26 memory accesses to 6 slices as follows [2, 2, 2, 2, 2, 16]. 62 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0, 0]. The 8 writes are split as follows [0, 1, 1, 1, 1, 4]. [2023-11-26 12:00:57,923 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:57" (1/1) ... [2023-11-26 12:00:57,924 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:57" (1/1) ... [2023-11-26 12:00:57,950 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:57" (1/1) ... [2023-11-26 12:00:57,969 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:57" (1/1) ... [2023-11-26 12:00:57,987 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:57" (1/1) ... [2023-11-26 12:00:57,990 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:57" (1/1) ... [2023-11-26 12:00:57,996 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 12:00:57,998 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 12:00:57,999 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 12:00:58,000 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 12:00:58,000 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:57" (1/1) ... [2023-11-26 12:00:58,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 12:00:58,024 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b5a1ffa-7d8f-452e-91a7-1051090a572e/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:00:58,035 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b5a1ffa-7d8f-452e-91a7-1051090a572e/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 12:00:58,068 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b5a1ffa-7d8f-452e-91a7-1051090a572e/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 12:00:58,082 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 12:00:58,083 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 12:00:58,083 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-26 12:00:58,083 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-26 12:00:58,083 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-26 12:00:58,083 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-26 12:00:58,084 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-26 12:00:58,086 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-11-26 12:00:58,086 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-26 12:00:58,087 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-26 12:00:58,087 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-26 12:00:58,087 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-26 12:00:58,087 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-26 12:00:58,087 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-11-26 12:00:58,088 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-26 12:00:58,088 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-26 12:00:58,088 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-26 12:00:58,089 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-26 12:00:58,089 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-26 12:00:58,090 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-26 12:00:58,090 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-11-26 12:00:58,090 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-11-26 12:00:58,090 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 12:00:58,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-26 12:00:58,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-26 12:00:58,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-26 12:00:58,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-26 12:00:58,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-26 12:00:58,093 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-26 12:00:58,093 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-26 12:00:58,093 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-26 12:00:58,093 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 12:00:58,094 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 12:00:58,094 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 12:00:58,096 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-26 12:00:58,301 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 12:00:58,303 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 12:00:59,242 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 12:00:59,914 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 12:00:59,914 INFO L309 CfgBuilder]: Removed 8 assume(true) statements. [2023-11-26 12:00:59,915 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:00:59 BoogieIcfgContainer [2023-11-26 12:00:59,915 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 12:00:59,918 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 12:00:59,918 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 12:00:59,921 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 12:00:59,921 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 12:00:57" (1/3) ... [2023-11-26 12:00:59,922 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21a174e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:00:59, skipping insertion in model container [2023-11-26 12:00:59,922 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:57" (2/3) ... [2023-11-26 12:00:59,924 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21a174e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:00:59, skipping insertion in model container [2023-11-26 12:00:59,924 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:00:59" (3/3) ... [2023-11-26 12:00:59,926 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-commit-2.wvr-bad.c [2023-11-26 12:00:59,936 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-26 12:00:59,947 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 12:00:59,948 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2023-11-26 12:00:59,948 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-26 12:01:00,091 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-26 12:01:00,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 114 places, 125 transitions, 278 flow [2023-11-26 12:01:00,222 INFO L124 PetriNetUnfolderBase]: 24/121 cut-off events. [2023-11-26 12:01:00,222 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-26 12:01:00,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138 conditions, 121 events. 24/121 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 409 event pairs, 0 based on Foata normal form. 0/65 useless extension candidates. Maximal degree in co-relation 102. Up to 8 conditions per place. [2023-11-26 12:01:00,229 INFO L82 GeneralOperation]: Start removeDead. Operand has 114 places, 125 transitions, 278 flow [2023-11-26 12:01:00,240 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 108 places, 119 transitions, 259 flow [2023-11-26 12:01:00,259 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 12:01:00,267 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;@2ad05aa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 12:01:00,268 INFO L358 AbstractCegarLoop]: Starting to check reachability of 60 error locations. [2023-11-26 12:01:00,274 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 12:01:00,275 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2023-11-26 12:01:00,275 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 12:01:00,275 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:01:00,276 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-26 12:01:00,277 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 12:01:00,283 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:00,284 INFO L85 PathProgramCache]: Analyzing trace with hash 1466334, now seen corresponding path program 1 times [2023-11-26 12:01:00,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:00,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363981944] [2023-11-26 12:01:00,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:00,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:00,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:00,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:01:00,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:00,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363981944] [2023-11-26 12:01:00,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363981944] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:01:00,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:01:00,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 12:01:00,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876880776] [2023-11-26 12:01:00,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:01:00,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 12:01:00,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:00,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 12:01:00,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 12:01:00,808 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 125 [2023-11-26 12:01:00,811 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 119 transitions, 259 flow. Second operand has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:00,811 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:01:00,812 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 125 [2023-11-26 12:01:00,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:01:06,235 INFO L124 PetriNetUnfolderBase]: 24613/31790 cut-off events. [2023-11-26 12:01:06,235 INFO L125 PetriNetUnfolderBase]: For 516/516 co-relation queries the response was YES. [2023-11-26 12:01:06,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62890 conditions, 31790 events. 24613/31790 cut-off events. For 516/516 co-relation queries the response was YES. Maximal size of possible extension queue 2191. Compared 195956 event pairs, 15813 based on Foata normal form. 3184/21207 useless extension candidates. Maximal degree in co-relation 58128. Up to 29964 conditions per place. [2023-11-26 12:01:06,605 INFO L140 encePairwiseOnDemand]: 88/125 looper letters, 70 selfloop transitions, 13 changer transitions 0/115 dead transitions. [2023-11-26 12:01:06,605 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 115 transitions, 417 flow [2023-11-26 12:01:06,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 12:01:06,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 12:01:06,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 251 transitions. [2023-11-26 12:01:06,619 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.502 [2023-11-26 12:01:06,620 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 251 transitions. [2023-11-26 12:01:06,621 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 251 transitions. [2023-11-26 12:01:06,622 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:01:06,625 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 251 transitions. [2023-11-26 12:01:06,628 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 62.75) internal successors, (251), 4 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:06,632 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 125.0) internal successors, (625), 5 states have internal predecessors, (625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:06,633 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 125.0) internal successors, (625), 5 states have internal predecessors, (625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:06,635 INFO L175 Difference]: Start difference. First operand has 108 places, 119 transitions, 259 flow. Second operand 4 states and 251 transitions. [2023-11-26 12:01:06,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 115 transitions, 417 flow [2023-11-26 12:01:06,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 115 transitions, 404 flow, removed 0 selfloop flow, removed 7 redundant places. [2023-11-26 12:01:06,701 INFO L231 Difference]: Finished difference. Result has 95 places, 115 transitions, 330 flow [2023-11-26 12:01:06,703 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=330, PETRI_PLACES=95, PETRI_TRANSITIONS=115} [2023-11-26 12:01:06,709 INFO L281 CegarLoopForPetriNet]: 108 programPoint places, -13 predicate places. [2023-11-26 12:01:06,710 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 115 transitions, 330 flow [2023-11-26 12:01:06,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:06,710 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:01:06,710 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-26 12:01:06,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 12:01:06,712 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 12:01:06,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:06,713 INFO L85 PathProgramCache]: Analyzing trace with hash 735369749, now seen corresponding path program 1 times [2023-11-26 12:01:06,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:06,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212276803] [2023-11-26 12:01:06,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:06,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:06,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:06,847 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:01:06,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:06,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212276803] [2023-11-26 12:01:06,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212276803] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 12:01:06,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [552041446] [2023-11-26 12:01:06,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:06,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:01:06,849 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b5a1ffa-7d8f-452e-91a7-1051090a572e/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:01:06,852 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b5a1ffa-7d8f-452e-91a7-1051090a572e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:01:06,872 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b5a1ffa-7d8f-452e-91a7-1051090a572e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 12:01:06,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:06,982 INFO L262 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-26 12:01:06,986 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:01:07,035 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:01:07,036 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:01:07,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [552041446] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:01:07,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 12:01:07,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-11-26 12:01:07,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009588702] [2023-11-26 12:01:07,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:01:07,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 12:01:07,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:07,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 12:01:07,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-26 12:01:07,069 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 125 [2023-11-26 12:01:07,070 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 115 transitions, 330 flow. Second operand has 6 states, 6 states have (on average 36.833333333333336) internal successors, (221), 6 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:07,070 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:01:07,070 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 125 [2023-11-26 12:01:07,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:01:11,287 INFO L124 PetriNetUnfolderBase]: 24613/31786 cut-off events. [2023-11-26 12:01:11,287 INFO L125 PetriNetUnfolderBase]: For 85/85 co-relation queries the response was YES. [2023-11-26 12:01:11,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62594 conditions, 31786 events. 24613/31786 cut-off events. For 85/85 co-relation queries the response was YES. Maximal size of possible extension queue 2191. Compared 195883 event pairs, 15813 based on Foata normal form. 4/18030 useless extension candidates. Maximal degree in co-relation 62498. Up to 29944 conditions per place. [2023-11-26 12:01:11,679 INFO L140 encePairwiseOnDemand]: 108/125 looper letters, 57 selfloop transitions, 22 changer transitions 0/111 dead transitions. [2023-11-26 12:01:11,679 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 111 transitions, 472 flow [2023-11-26 12:01:11,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 12:01:11,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-26 12:01:11,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 299 transitions. [2023-11-26 12:01:11,683 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39866666666666667 [2023-11-26 12:01:11,683 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 299 transitions. [2023-11-26 12:01:11,683 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 299 transitions. [2023-11-26 12:01:11,684 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:01:11,684 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 299 transitions. [2023-11-26 12:01:11,686 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 49.833333333333336) internal successors, (299), 6 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:11,689 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 125.0) internal successors, (875), 7 states have internal predecessors, (875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:11,690 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 125.0) internal successors, (875), 7 states have internal predecessors, (875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:11,691 INFO L175 Difference]: Start difference. First operand has 95 places, 115 transitions, 330 flow. Second operand 6 states and 299 transitions. [2023-11-26 12:01:11,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 111 transitions, 472 flow [2023-11-26 12:01:11,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 111 transitions, 472 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-26 12:01:11,874 INFO L231 Difference]: Finished difference. Result has 96 places, 111 transitions, 358 flow [2023-11-26 12:01:11,874 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=314, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=358, PETRI_PLACES=96, PETRI_TRANSITIONS=111} [2023-11-26 12:01:11,875 INFO L281 CegarLoopForPetriNet]: 108 programPoint places, -12 predicate places. [2023-11-26 12:01:11,875 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 111 transitions, 358 flow [2023-11-26 12:01:11,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 36.833333333333336) internal successors, (221), 6 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:11,876 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:01:11,876 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2023-11-26 12:01:11,887 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b5a1ffa-7d8f-452e-91a7-1051090a572e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-26 12:01:12,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b5a1ffa-7d8f-452e-91a7-1051090a572e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:01:12,082 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 12:01:12,083 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:12,083 INFO L85 PathProgramCache]: Analyzing trace with hash 1321627234, now seen corresponding path program 1 times [2023-11-26 12:01:12,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:12,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435985204] [2023-11-26 12:01:12,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:12,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:12,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:12,187 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:01:12,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:12,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435985204] [2023-11-26 12:01:12,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435985204] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 12:01:12,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [91160016] [2023-11-26 12:01:12,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:12,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:01:12,189 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b5a1ffa-7d8f-452e-91a7-1051090a572e/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:01:12,190 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b5a1ffa-7d8f-452e-91a7-1051090a572e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:01:12,212 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b5a1ffa-7d8f-452e-91a7-1051090a572e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-26 12:01:12,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:12,331 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-26 12:01:12,332 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:01:12,367 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:01:12,367 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 12:01:12,418 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:01:12,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [91160016] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 12:01:12,419 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 12:01:12,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2023-11-26 12:01:12,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360566498] [2023-11-26 12:01:12,420 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 12:01:12,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-26 12:01:12,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:12,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-26 12:01:12,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-11-26 12:01:12,499 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 125 [2023-11-26 12:01:12,500 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 111 transitions, 358 flow. Second operand has 12 states, 12 states have (on average 37.083333333333336) internal successors, (445), 12 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:12,500 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:01:12,500 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 125 [2023-11-26 12:01:12,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:01:16,503 INFO L124 PetriNetUnfolderBase]: 24625/31834 cut-off events. [2023-11-26 12:01:16,504 INFO L125 PetriNetUnfolderBase]: For 173/173 co-relation queries the response was YES. [2023-11-26 12:01:16,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62782 conditions, 31834 events. 24625/31834 cut-off events. For 173/173 co-relation queries the response was YES. Maximal size of possible extension queue 2214. Compared 196180 event pairs, 15813 based on Foata normal form. 12/18087 useless extension candidates. Maximal degree in co-relation 62500. Up to 29963 conditions per place. [2023-11-26 12:01:16,772 INFO L140 encePairwiseOnDemand]: 108/125 looper letters, 66 selfloop transitions, 49 changer transitions 0/147 dead transitions. [2023-11-26 12:01:16,773 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 147 transitions, 822 flow [2023-11-26 12:01:16,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-26 12:01:16,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-26 12:01:16,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 487 transitions. [2023-11-26 12:01:16,776 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3896 [2023-11-26 12:01:16,776 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 487 transitions. [2023-11-26 12:01:16,777 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 487 transitions. [2023-11-26 12:01:16,777 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:01:16,777 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 487 transitions. [2023-11-26 12:01:16,779 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 48.7) internal successors, (487), 10 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:16,783 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 125.0) internal successors, (1375), 11 states have internal predecessors, (1375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:16,784 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 125.0) internal successors, (1375), 11 states have internal predecessors, (1375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:16,785 INFO L175 Difference]: Start difference. First operand has 96 places, 111 transitions, 358 flow. Second operand 10 states and 487 transitions. [2023-11-26 12:01:16,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 147 transitions, 822 flow [2023-11-26 12:01:16,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 147 transitions, 714 flow, removed 20 selfloop flow, removed 5 redundant places. [2023-11-26 12:01:16,794 INFO L231 Difference]: Finished difference. Result has 103 places, 147 transitions, 648 flow [2023-11-26 12:01:16,795 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=648, PETRI_PLACES=103, PETRI_TRANSITIONS=147} [2023-11-26 12:01:16,796 INFO L281 CegarLoopForPetriNet]: 108 programPoint places, -5 predicate places. [2023-11-26 12:01:16,797 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 147 transitions, 648 flow [2023-11-26 12:01:16,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 37.083333333333336) internal successors, (445), 12 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:16,798 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:01:16,798 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:01:16,804 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b5a1ffa-7d8f-452e-91a7-1051090a572e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-26 12:01:17,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b5a1ffa-7d8f-452e-91a7-1051090a572e/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:01:17,005 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-26 12:01:17,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:17,005 INFO L85 PathProgramCache]: Analyzing trace with hash 1647540865, now seen corresponding path program 1 times [2023-11-26 12:01:17,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:17,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634555029] [2023-11-26 12:01:17,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:17,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:17,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:17,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:01:17,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:17,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634555029] [2023-11-26 12:01:17,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634555029] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:01:17,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:01:17,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-26 12:01:17,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935979554] [2023-11-26 12:01:17,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:01:17,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:01:17,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:17,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:01:17,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:01:17,171 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 125 [2023-11-26 12:01:17,174 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 147 transitions, 648 flow. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:17,175 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:01:17,175 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 125 [2023-11-26 12:01:17,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:01:23,329 INFO L124 PetriNetUnfolderBase]: 41877/55528 cut-off events. [2023-11-26 12:01:23,330 INFO L125 PetriNetUnfolderBase]: For 478/478 co-relation queries the response was YES. [2023-11-26 12:01:23,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107840 conditions, 55528 events. 41877/55528 cut-off events. For 478/478 co-relation queries the response was YES. Maximal size of possible extension queue 3305. Compared 364510 event pairs, 12567 based on Foata normal form. 1537/34616 useless extension candidates. Maximal degree in co-relation 107711. Up to 31827 conditions per place. [2023-11-26 12:01:23,835 INFO L140 encePairwiseOnDemand]: 115/125 looper letters, 148 selfloop transitions, 4 changer transitions 0/188 dead transitions. [2023-11-26 12:01:23,836 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 188 transitions, 1040 flow [2023-11-26 12:01:23,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:01:23,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 12:01:23,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 242 transitions. [2023-11-26 12:01:23,845 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6453333333333333 [2023-11-26 12:01:23,846 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 242 transitions. [2023-11-26 12:01:23,846 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 242 transitions. [2023-11-26 12:01:23,846 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:01:23,847 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 242 transitions. [2023-11-26 12:01:23,848 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:23,849 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 125.0) internal successors, (500), 4 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:23,850 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 125.0) internal successors, (500), 4 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:23,850 INFO L175 Difference]: Start difference. First operand has 103 places, 147 transitions, 648 flow. Second operand 3 states and 242 transitions. [2023-11-26 12:01:23,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 188 transitions, 1040 flow [2023-11-26 12:01:23,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 188 transitions, 990 flow, removed 12 selfloop flow, removed 2 redundant places. [2023-11-26 12:01:23,859 INFO L231 Difference]: Finished difference. Result has 104 places, 150 transitions, 634 flow [2023-11-26 12:01:23,860 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=598, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=634, PETRI_PLACES=104, PETRI_TRANSITIONS=150} [2023-11-26 12:01:23,861 INFO L281 CegarLoopForPetriNet]: 108 programPoint places, -4 predicate places. [2023-11-26 12:01:23,861 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 150 transitions, 634 flow [2023-11-26 12:01:23,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:23,862 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:01:23,862 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:01:23,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-26 12:01:23,862 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-26 12:01:23,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:23,863 INFO L85 PathProgramCache]: Analyzing trace with hash -465838150, now seen corresponding path program 1 times [2023-11-26 12:01:23,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:23,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478905291] [2023-11-26 12:01:23,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:23,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:23,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:23,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:01:23,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:23,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478905291] [2023-11-26 12:01:23,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478905291] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:01:23,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:01:23,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 12:01:23,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990900747] [2023-11-26 12:01:23,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:01:23,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:01:23,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:23,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:01:23,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:01:23,986 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 125 [2023-11-26 12:01:23,986 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 150 transitions, 634 flow. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:23,987 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:01:23,987 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 125 [2023-11-26 12:01:23,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:01:32,547 INFO L124 PetriNetUnfolderBase]: 59891/78935 cut-off events. [2023-11-26 12:01:32,547 INFO L125 PetriNetUnfolderBase]: For 6726/6896 co-relation queries the response was YES. [2023-11-26 12:01:32,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 166725 conditions, 78935 events. 59891/78935 cut-off events. For 6726/6896 co-relation queries the response was YES. Maximal size of possible extension queue 2624. Compared 499318 event pairs, 18307 based on Foata normal form. 0/57026 useless extension candidates. Maximal degree in co-relation 166601. Up to 41925 conditions per place. [2023-11-26 12:01:33,162 INFO L140 encePairwiseOnDemand]: 120/125 looper letters, 153 selfloop transitions, 4 changer transitions 0/186 dead transitions. [2023-11-26 12:01:33,162 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 186 transitions, 1032 flow [2023-11-26 12:01:33,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:01:33,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 12:01:33,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 218 transitions. [2023-11-26 12:01:33,164 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5813333333333334 [2023-11-26 12:01:33,165 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 218 transitions. [2023-11-26 12:01:33,165 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 218 transitions. [2023-11-26 12:01:33,165 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:01:33,165 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 218 transitions. [2023-11-26 12:01:33,166 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:33,168 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 125.0) internal successors, (500), 4 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:33,168 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 125.0) internal successors, (500), 4 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:33,168 INFO L175 Difference]: Start difference. First operand has 104 places, 150 transitions, 634 flow. Second operand 3 states and 218 transitions. [2023-11-26 12:01:33,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 186 transitions, 1032 flow [2023-11-26 12:01:33,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 186 transitions, 1028 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 12:01:33,177 INFO L231 Difference]: Finished difference. Result has 107 places, 151 transitions, 652 flow [2023-11-26 12:01:33,178 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=630, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=652, PETRI_PLACES=107, PETRI_TRANSITIONS=151} [2023-11-26 12:01:33,179 INFO L281 CegarLoopForPetriNet]: 108 programPoint places, -1 predicate places. [2023-11-26 12:01:33,179 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 151 transitions, 652 flow [2023-11-26 12:01:33,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:33,180 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:01:33,180 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:01:33,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-26 12:01:33,180 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-26 12:01:33,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:33,181 INFO L85 PathProgramCache]: Analyzing trace with hash -532255091, now seen corresponding path program 1 times [2023-11-26 12:01:33,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:33,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323055107] [2023-11-26 12:01:33,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:33,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:33,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:33,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:01:33,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:33,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323055107] [2023-11-26 12:01:33,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323055107] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:01:33,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:01:33,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 12:01:33,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319864657] [2023-11-26 12:01:33,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:01:33,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:01:33,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:33,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:01:33,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:01:33,272 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 125 [2023-11-26 12:01:33,272 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 151 transitions, 652 flow. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:33,272 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:01:33,273 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 125 [2023-11-26 12:01:33,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand