./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-commit-2.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_1299b2ea-1dfa-4d9b-850f-cccaf9675e8d/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1299b2ea-1dfa-4d9b-850f-cccaf9675e8d/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1299b2ea-1dfa-4d9b-850f-cccaf9675e8d/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1299b2ea-1dfa-4d9b-850f-cccaf9675e8d/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-commit-2.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1299b2ea-1dfa-4d9b-850f-cccaf9675e8d/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1299b2ea-1dfa-4d9b-850f-cccaf9675e8d/bin/uautomizer-verify-BQ2R08f2Ya --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 ec2334e7e9ec2636c6abf161aed91fff94fbff3709d38c7edad92256c3b5dc81 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-28 23:57:12,901 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-28 23:57:12,982 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1299b2ea-1dfa-4d9b-850f-cccaf9675e8d/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-28 23:57:12,988 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-28 23:57:12,989 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-28 23:57:13,015 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-28 23:57:13,016 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-28 23:57:13,016 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-28 23:57:13,017 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-28 23:57:13,017 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-28 23:57:13,018 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-28 23:57:13,019 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-28 23:57:13,019 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-28 23:57:13,020 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-28 23:57:13,020 INFO L153 SettingsManager]: * Use SBE=true [2023-11-28 23:57:13,021 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-28 23:57:13,021 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-28 23:57:13,022 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-28 23:57:13,022 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-28 23:57:13,023 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-28 23:57:13,024 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-28 23:57:13,024 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-28 23:57:13,025 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-28 23:57:13,025 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-28 23:57:13,026 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-28 23:57:13,026 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-28 23:57:13,027 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-28 23:57:13,027 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-28 23:57:13,028 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-28 23:57:13,028 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-28 23:57:13,029 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-28 23:57:13,029 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-28 23:57:13,030 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-28 23:57:13,030 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-28 23:57:13,030 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-28 23:57:13,031 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-28 23:57:13,031 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-28 23:57:13,031 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-28 23:57:13,031 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-28 23:57:13,032 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-28 23:57:13,032 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-28 23:57:13,032 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-28 23:57:13,032 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-28 23:57:13,033 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-28 23:57:13,033 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_1299b2ea-1dfa-4d9b-850f-cccaf9675e8d/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1299b2ea-1dfa-4d9b-850f-cccaf9675e8d/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ec2334e7e9ec2636c6abf161aed91fff94fbff3709d38c7edad92256c3b5dc81 [2023-11-28 23:57:13,275 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-28 23:57:13,296 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-28 23:57:13,299 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-28 23:57:13,300 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-28 23:57:13,300 INFO L274 PluginConnector]: CDTParser initialized [2023-11-28 23:57:13,301 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1299b2ea-1dfa-4d9b-850f-cccaf9675e8d/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/weaver/popl20-commit-2.wvr.c [2023-11-28 23:57:16,065 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-28 23:57:16,275 INFO L384 CDTParser]: Found 1 translation units. [2023-11-28 23:57:16,276 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1299b2ea-1dfa-4d9b-850f-cccaf9675e8d/sv-benchmarks/c/weaver/popl20-commit-2.wvr.c [2023-11-28 23:57:16,286 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1299b2ea-1dfa-4d9b-850f-cccaf9675e8d/bin/uautomizer-verify-BQ2R08f2Ya/data/cd5db1894/e39e0dc9b3fd4d4ab11e0cf726d31133/FLAGffc07a845 [2023-11-28 23:57:16,301 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1299b2ea-1dfa-4d9b-850f-cccaf9675e8d/bin/uautomizer-verify-BQ2R08f2Ya/data/cd5db1894/e39e0dc9b3fd4d4ab11e0cf726d31133 [2023-11-28 23:57:16,304 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-28 23:57:16,306 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-28 23:57:16,307 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-28 23:57:16,307 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-28 23:57:16,313 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-28 23:57:16,314 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:57:16" (1/1) ... [2023-11-28 23:57:16,315 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5582a632 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:57:16, skipping insertion in model container [2023-11-28 23:57:16,315 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:57:16" (1/1) ... [2023-11-28 23:57:16,351 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-28 23:57:16,587 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-28 23:57:16,598 INFO L202 MainTranslator]: Completed pre-run [2023-11-28 23:57:16,636 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-28 23:57:16,646 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-28 23:57:16,646 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-28 23:57:16,654 INFO L206 MainTranslator]: Completed translation [2023-11-28 23:57:16,654 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:57:16 WrapperNode [2023-11-28 23:57:16,655 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-28 23:57:16,656 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-28 23:57:16,656 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-28 23:57:16,656 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-28 23:57:16,662 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:57:16" (1/1) ... [2023-11-28 23:57:16,674 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:57:16" (1/1) ... [2023-11-28 23:57:16,714 INFO L138 Inliner]: procedures = 26, calls = 94, calls flagged for inlining = 28, calls inlined = 34, statements flattened = 515 [2023-11-28 23:57:16,714 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-28 23:57:16,715 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-28 23:57:16,715 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-28 23:57:16,715 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-28 23:57:16,727 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:57:16" (1/1) ... [2023-11-28 23:57:16,728 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:57:16" (1/1) ... [2023-11-28 23:57:16,735 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:57:16" (1/1) ... [2023-11-28 23:57:16,758 INFO L175 MemorySlicer]: Split 26 memory accesses to 6 slices as follows [2, 2, 2, 2, 16, 2]. 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, 4, 1]. [2023-11-28 23:57:16,758 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:57:16" (1/1) ... [2023-11-28 23:57:16,759 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:57:16" (1/1) ... [2023-11-28 23:57:16,775 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:57:16" (1/1) ... [2023-11-28 23:57:16,782 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:57:16" (1/1) ... [2023-11-28 23:57:16,786 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:57:16" (1/1) ... [2023-11-28 23:57:16,789 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:57:16" (1/1) ... [2023-11-28 23:57:16,795 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-28 23:57:16,796 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-28 23:57:16,796 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-28 23:57:16,796 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-28 23:57:16,797 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:57:16" (1/1) ... [2023-11-28 23:57:16,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-28 23:57:16,814 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1299b2ea-1dfa-4d9b-850f-cccaf9675e8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:57:16,826 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1299b2ea-1dfa-4d9b-850f-cccaf9675e8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-28 23:57:16,829 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1299b2ea-1dfa-4d9b-850f-cccaf9675e8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-28 23:57:16,860 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-28 23:57:16,860 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-28 23:57:16,860 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-28 23:57:16,860 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-28 23:57:16,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-28 23:57:16,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-28 23:57:16,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-28 23:57:16,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-11-28 23:57:16,861 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-28 23:57:16,862 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-28 23:57:16,862 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-28 23:57:16,862 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-28 23:57:16,862 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-28 23:57:16,862 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-11-28 23:57:16,862 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-28 23:57:16,863 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-28 23:57:16,868 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-28 23:57:16,868 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-28 23:57:16,868 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-28 23:57:16,869 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-28 23:57:16,869 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-11-28 23:57:16,869 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-11-28 23:57:16,869 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-28 23:57:16,869 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-28 23:57:16,870 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-28 23:57:16,870 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-28 23:57:16,870 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-28 23:57:16,870 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-28 23:57:16,870 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-28 23:57:16,870 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-28 23:57:16,871 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-28 23:57:16,871 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-28 23:57:16,871 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-28 23:57:16,871 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-28 23:57:16,873 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-28 23:57:17,025 INFO L241 CfgBuilder]: Building ICFG [2023-11-28 23:57:17,027 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-28 23:57:17,657 INFO L282 CfgBuilder]: Performing block encoding [2023-11-28 23:57:18,297 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-28 23:57:18,297 INFO L309 CfgBuilder]: Removed 8 assume(true) statements. [2023-11-28 23:57:18,298 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:57:18 BoogieIcfgContainer [2023-11-28 23:57:18,298 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-28 23:57:18,301 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-28 23:57:18,301 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-28 23:57:18,305 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-28 23:57:18,305 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 11:57:16" (1/3) ... [2023-11-28 23:57:18,306 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15289c3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 11:57:18, skipping insertion in model container [2023-11-28 23:57:18,306 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:57:16" (2/3) ... [2023-11-28 23:57:18,306 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15289c3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 11:57:18, skipping insertion in model container [2023-11-28 23:57:18,306 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:57:18" (3/3) ... [2023-11-28 23:57:18,308 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-commit-2.wvr.c [2023-11-28 23:57:18,318 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-28 23:57:18,330 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-28 23:57:18,330 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2023-11-28 23:57:18,331 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-28 23:57:18,486 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-28 23:57:18,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 106 places, 105 transitions, 238 flow [2023-11-28 23:57:18,578 INFO L124 PetriNetUnfolderBase]: 12/101 cut-off events. [2023-11-28 23:57:18,578 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-28 23:57:18,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118 conditions, 101 events. 12/101 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 332 event pairs, 0 based on Foata normal form. 0/57 useless extension candidates. Maximal degree in co-relation 85. Up to 2 conditions per place. [2023-11-28 23:57:18,584 INFO L82 GeneralOperation]: Start removeDead. Operand has 106 places, 105 transitions, 238 flow [2023-11-28 23:57:18,590 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 100 places, 99 transitions, 219 flow [2023-11-28 23:57:18,600 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-28 23:57:18,608 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;@71f5621b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-28 23:57:18,608 INFO L358 AbstractCegarLoop]: Starting to check reachability of 60 error locations. [2023-11-28 23:57:18,613 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-28 23:57:18,613 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2023-11-28 23:57:18,613 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-28 23:57:18,613 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:57:18,614 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-28 23:57:18,614 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-28 23:57:18,620 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:57:18,620 INFO L85 PathProgramCache]: Analyzing trace with hash 1485196, now seen corresponding path program 1 times [2023-11-28 23:57:18,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:57:18,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908329588] [2023-11-28 23:57:18,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:57:18,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:57:18,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:57:18,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:57:18,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:57:18,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908329588] [2023-11-28 23:57:18,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908329588] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:57:18,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:57:18,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-28 23:57:18,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154546992] [2023-11-28 23:57:18,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:57:18,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 23:57:18,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:57:19,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 23:57:19,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-28 23:57:19,044 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 105 [2023-11-28 23:57:19,046 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 99 transitions, 219 flow. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 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) [2023-11-28 23:57:19,047 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:57:19,047 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 105 [2023-11-28 23:57:19,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:57:29,900 INFO L124 PetriNetUnfolderBase]: 74982/98689 cut-off events. [2023-11-28 23:57:29,900 INFO L125 PetriNetUnfolderBase]: For 2584/2584 co-relation queries the response was YES. [2023-11-28 23:57:30,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 196400 conditions, 98689 events. 74982/98689 cut-off events. For 2584/2584 co-relation queries the response was YES. Maximal size of possible extension queue 4939. Compared 627021 event pairs, 58534 based on Foata normal form. 16158/76579 useless extension candidates. Maximal degree in co-relation 185872. Up to 94773 conditions per place. [2023-11-28 23:57:30,783 INFO L140 encePairwiseOnDemand]: 68/105 looper letters, 70 selfloop transitions, 13 changer transitions 0/95 dead transitions. [2023-11-28 23:57:30,783 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 95 transitions, 377 flow [2023-11-28 23:57:30,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-28 23:57:30,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-28 23:57:30,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 171 transitions. [2023-11-28 23:57:30,800 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40714285714285714 [2023-11-28 23:57:30,801 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 171 transitions. [2023-11-28 23:57:30,801 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 171 transitions. [2023-11-28 23:57:30,803 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:57:30,806 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 171 transitions. [2023-11-28 23:57:30,810 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 42.75) internal successors, (171), 4 states have internal predecessors, (171), 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) [2023-11-28 23:57:30,815 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 105.0) internal successors, (525), 5 states have internal predecessors, (525), 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) [2023-11-28 23:57:30,815 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 105.0) internal successors, (525), 5 states have internal predecessors, (525), 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) [2023-11-28 23:57:30,818 INFO L175 Difference]: Start difference. First operand has 100 places, 99 transitions, 219 flow. Second operand 4 states and 171 transitions. [2023-11-28 23:57:30,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 95 transitions, 377 flow [2023-11-28 23:57:30,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 95 transitions, 364 flow, removed 0 selfloop flow, removed 7 redundant places. [2023-11-28 23:57:30,924 INFO L231 Difference]: Finished difference. Result has 87 places, 95 transitions, 290 flow [2023-11-28 23:57:30,927 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=290, PETRI_PLACES=87, PETRI_TRANSITIONS=95} [2023-11-28 23:57:30,931 INFO L281 CegarLoopForPetriNet]: 100 programPoint places, -13 predicate places. [2023-11-28 23:57:30,931 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 95 transitions, 290 flow [2023-11-28 23:57:30,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 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) [2023-11-28 23:57:30,932 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:57:30,932 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-28 23:57:30,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-28 23:57:30,932 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-28 23:57:30,933 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:57:30,933 INFO L85 PathProgramCache]: Analyzing trace with hash 1297294921, now seen corresponding path program 1 times [2023-11-28 23:57:30,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:57:30,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402887002] [2023-11-28 23:57:30,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:57:30,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:57:30,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:57:31,065 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:57:31,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:57:31,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402887002] [2023-11-28 23:57:31,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402887002] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:57:31,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [716067654] [2023-11-28 23:57:31,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:57:31,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:57:31,067 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1299b2ea-1dfa-4d9b-850f-cccaf9675e8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:57:31,072 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1299b2ea-1dfa-4d9b-850f-cccaf9675e8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:57:31,074 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1299b2ea-1dfa-4d9b-850f-cccaf9675e8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-28 23:57:31,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:57:31,253 INFO L262 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-28 23:57:31,258 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:57:31,323 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:57:31,323 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:57:31,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [716067654] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:57:31,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-28 23:57:31,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-11-28 23:57:31,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329477656] [2023-11-28 23:57:31,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:57:31,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-28 23:57:31,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:57:31,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-28 23:57:31,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-28 23:57:31,362 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 105 [2023-11-28 23:57:31,362 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 95 transitions, 290 flow. Second operand has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 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) [2023-11-28 23:57:31,363 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:57:31,363 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 105 [2023-11-28 23:57:31,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:57:40,862 INFO L124 PetriNetUnfolderBase]: 74982/98685 cut-off events. [2023-11-28 23:57:40,863 INFO L125 PetriNetUnfolderBase]: For 477/477 co-relation queries the response was YES. [2023-11-28 23:57:41,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 195704 conditions, 98685 events. 74982/98685 cut-off events. For 477/477 co-relation queries the response was YES. Maximal size of possible extension queue 5012. Compared 627231 event pairs, 58534 based on Foata normal form. 4/60428 useless extension candidates. Maximal degree in co-relation 195608. Up to 94753 conditions per place. [2023-11-28 23:57:41,473 INFO L140 encePairwiseOnDemand]: 88/105 looper letters, 57 selfloop transitions, 22 changer transitions 0/91 dead transitions. [2023-11-28 23:57:41,473 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 91 transitions, 432 flow [2023-11-28 23:57:41,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-28 23:57:41,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-28 23:57:41,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 179 transitions. [2023-11-28 23:57:41,475 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2841269841269841 [2023-11-28 23:57:41,476 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 179 transitions. [2023-11-28 23:57:41,476 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 179 transitions. [2023-11-28 23:57:41,476 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:57:41,476 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 179 transitions. [2023-11-28 23:57:41,478 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 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) [2023-11-28 23:57:41,481 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 105.0) internal successors, (735), 7 states have internal predecessors, (735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:57:41,481 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 105.0) internal successors, (735), 7 states have internal predecessors, (735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:57:41,482 INFO L175 Difference]: Start difference. First operand has 87 places, 95 transitions, 290 flow. Second operand 6 states and 179 transitions. [2023-11-28 23:57:41,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 91 transitions, 432 flow [2023-11-28 23:57:41,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 91 transitions, 432 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-28 23:57:41,487 INFO L231 Difference]: Finished difference. Result has 88 places, 91 transitions, 318 flow [2023-11-28 23:57:41,488 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=318, PETRI_PLACES=88, PETRI_TRANSITIONS=91} [2023-11-28 23:57:41,489 INFO L281 CegarLoopForPetriNet]: 100 programPoint places, -12 predicate places. [2023-11-28 23:57:41,489 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 91 transitions, 318 flow [2023-11-28 23:57:41,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 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) [2023-11-28 23:57:41,489 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:57:41,489 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2023-11-28 23:57:41,499 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1299b2ea-1dfa-4d9b-850f-cccaf9675e8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-28 23:57:41,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1299b2ea-1dfa-4d9b-850f-cccaf9675e8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-11-28 23:57:41,690 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-28 23:57:41,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:57:41,691 INFO L85 PathProgramCache]: Analyzing trace with hash 1561438390, now seen corresponding path program 1 times [2023-11-28 23:57:41,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:57:41,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130444097] [2023-11-28 23:57:41,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:57:41,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:57:41,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:57:41,785 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:57:41,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:57:41,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130444097] [2023-11-28 23:57:41,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130444097] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:57:41,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1283948276] [2023-11-28 23:57:41,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:57:41,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:57:41,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1299b2ea-1dfa-4d9b-850f-cccaf9675e8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:57:41,787 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1299b2ea-1dfa-4d9b-850f-cccaf9675e8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:57:41,800 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1299b2ea-1dfa-4d9b-850f-cccaf9675e8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-28 23:57:41,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:57:41,928 INFO L262 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-28 23:57:41,929 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:57:41,953 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:57:41,953 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:57:41,993 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:57:41,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1283948276] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:57:41,994 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 23:57:41,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2023-11-28 23:57:41,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687429353] [2023-11-28 23:57:41,995 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 23:57:41,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-28 23:57:41,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:57:41,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-28 23:57:41,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-11-28 23:57:42,062 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 105 [2023-11-28 23:57:42,063 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 91 transitions, 318 flow. Second operand has 12 states, 12 states have (on average 17.083333333333332) internal successors, (205), 12 states have internal predecessors, (205), 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) [2023-11-28 23:57:42,063 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:57:42,063 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 105 [2023-11-28 23:57:42,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:57:51,763 INFO L124 PetriNetUnfolderBase]: 74994/98733 cut-off events. [2023-11-28 23:57:51,763 INFO L125 PetriNetUnfolderBase]: For 565/565 co-relation queries the response was YES. [2023-11-28 23:57:51,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 195892 conditions, 98733 events. 74994/98733 cut-off events. For 565/565 co-relation queries the response was YES. Maximal size of possible extension queue 5018. Compared 628078 event pairs, 58534 based on Foata normal form. 12/60485 useless extension candidates. Maximal degree in co-relation 195610. Up to 94772 conditions per place. [2023-11-28 23:57:52,335 INFO L140 encePairwiseOnDemand]: 88/105 looper letters, 66 selfloop transitions, 49 changer transitions 0/127 dead transitions. [2023-11-28 23:57:52,335 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 127 transitions, 782 flow [2023-11-28 23:57:52,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-28 23:57:52,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-28 23:57:52,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 287 transitions. [2023-11-28 23:57:52,338 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2733333333333333 [2023-11-28 23:57:52,338 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 287 transitions. [2023-11-28 23:57:52,338 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 287 transitions. [2023-11-28 23:57:52,338 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:57:52,338 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 287 transitions. [2023-11-28 23:57:52,340 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 28.7) internal successors, (287), 10 states have internal predecessors, (287), 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) [2023-11-28 23:57:52,342 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 105.0) internal successors, (1155), 11 states have internal predecessors, (1155), 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) [2023-11-28 23:57:52,343 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 105.0) internal successors, (1155), 11 states have internal predecessors, (1155), 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) [2023-11-28 23:57:52,343 INFO L175 Difference]: Start difference. First operand has 88 places, 91 transitions, 318 flow. Second operand 10 states and 287 transitions. [2023-11-28 23:57:52,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 127 transitions, 782 flow [2023-11-28 23:57:52,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 127 transitions, 674 flow, removed 20 selfloop flow, removed 5 redundant places. [2023-11-28 23:57:52,351 INFO L231 Difference]: Finished difference. Result has 95 places, 127 transitions, 608 flow [2023-11-28 23:57:52,351 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=608, PETRI_PLACES=95, PETRI_TRANSITIONS=127} [2023-11-28 23:57:52,352 INFO L281 CegarLoopForPetriNet]: 100 programPoint places, -5 predicate places. [2023-11-28 23:57:52,352 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 127 transitions, 608 flow [2023-11-28 23:57:52,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 17.083333333333332) internal successors, (205), 12 states have internal predecessors, (205), 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) [2023-11-28 23:57:52,353 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:57:52,353 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:57:52,361 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1299b2ea-1dfa-4d9b-850f-cccaf9675e8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-28 23:57:52,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1299b2ea-1dfa-4d9b-850f-cccaf9675e8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:57:52,554 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-28 23:57:52,555 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:57:52,555 INFO L85 PathProgramCache]: Analyzing trace with hash -939416114, now seen corresponding path program 1 times [2023-11-28 23:57:52,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:57:52,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918451816] [2023-11-28 23:57:52,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:57:52,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:57:52,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:57:52,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:57:52,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:57:52,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918451816] [2023-11-28 23:57:52,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918451816] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:57:52,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:57:52,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-28 23:57:52,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838926840] [2023-11-28 23:57:52,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:57:52,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 23:57:52,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:57:52,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 23:57:52,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 23:57:52,654 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 105 [2023-11-28 23:57:52,654 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 127 transitions, 608 flow. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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) [2023-11-28 23:57:52,654 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:57:52,654 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 105 [2023-11-28 23:57:52,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:58:03,279 INFO L124 PetriNetUnfolderBase]: 84329/110458 cut-off events. [2023-11-28 23:58:03,279 INFO L125 PetriNetUnfolderBase]: For 888/888 co-relation queries the response was YES. [2023-11-28 23:58:03,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 220307 conditions, 110458 events. 84329/110458 cut-off events. For 888/888 co-relation queries the response was YES. Maximal size of possible extension queue 5099. Compared 713015 event pairs, 18667 based on Foata normal form. 604/69160 useless extension candidates. Maximal degree in co-relation 220178. Up to 96231 conditions per place. [2023-11-28 23:58:03,918 INFO L140 encePairwiseOnDemand]: 99/105 looper letters, 140 selfloop transitions, 4 changer transitions 0/160 dead transitions. [2023-11-28 23:58:03,919 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 160 transitions, 968 flow [2023-11-28 23:58:03,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 23:58:03,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-28 23:58:03,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 170 transitions. [2023-11-28 23:58:03,921 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5396825396825397 [2023-11-28 23:58:03,921 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 170 transitions. [2023-11-28 23:58:03,921 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 170 transitions. [2023-11-28 23:58:03,921 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:58:03,921 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 170 transitions. [2023-11-28 23:58:03,922 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 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) [2023-11-28 23:58:03,923 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 105.0) internal successors, (420), 4 states have internal predecessors, (420), 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) [2023-11-28 23:58:03,923 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 105.0) internal successors, (420), 4 states have internal predecessors, (420), 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) [2023-11-28 23:58:03,923 INFO L175 Difference]: Start difference. First operand has 95 places, 127 transitions, 608 flow. Second operand 3 states and 170 transitions. [2023-11-28 23:58:03,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 160 transitions, 968 flow [2023-11-28 23:58:03,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 160 transitions, 918 flow, removed 12 selfloop flow, removed 2 redundant places. [2023-11-28 23:58:03,929 INFO L231 Difference]: Finished difference. Result has 96 places, 130 transitions, 586 flow [2023-11-28 23:58:03,929 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=558, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=586, PETRI_PLACES=96, PETRI_TRANSITIONS=130} [2023-11-28 23:58:03,930 INFO L281 CegarLoopForPetriNet]: 100 programPoint places, -4 predicate places. [2023-11-28 23:58:03,930 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 130 transitions, 586 flow [2023-11-28 23:58:03,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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) [2023-11-28 23:58:03,930 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:58:03,930 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:58:03,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-28 23:58:03,930 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-28 23:58:03,931 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:58:03,931 INFO L85 PathProgramCache]: Analyzing trace with hash -2005191620, now seen corresponding path program 1 times [2023-11-28 23:58:03,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:58:03,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474179965] [2023-11-28 23:58:03,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:58:03,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:58:03,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:58:04,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:58:04,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:58:04,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474179965] [2023-11-28 23:58:04,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474179965] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:58:04,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:58:04,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-28 23:58:04,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31414954] [2023-11-28 23:58:04,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:58:04,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 23:58:04,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:58:04,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 23:58:04,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 23:58:04,031 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 105 [2023-11-28 23:58:04,032 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 130 transitions, 586 flow. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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) [2023-11-28 23:58:04,032 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:58:04,032 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 105 [2023-11-28 23:58:04,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:58:15,247 INFO L124 PetriNetUnfolderBase]: 87131/114356 cut-off events. [2023-11-28 23:58:15,247 INFO L125 PetriNetUnfolderBase]: For 6472/6472 co-relation queries the response was YES. [2023-11-28 23:58:15,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 240407 conditions, 114356 events. 87131/114356 cut-off events. For 6472/6472 co-relation queries the response was YES. Maximal size of possible extension queue 4407. Compared 729061 event pairs, 24903 based on Foata normal form. 1520/81342 useless extension candidates. Maximal degree in co-relation 240283. Up to 85603 conditions per place. [2023-11-28 23:58:15,929 INFO L140 encePairwiseOnDemand]: 101/105 looper letters, 144 selfloop transitions, 2 changer transitions 0/162 dead transitions. [2023-11-28 23:58:15,929 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 162 transitions, 952 flow [2023-11-28 23:58:15,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 23:58:15,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-28 23:58:15,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 170 transitions. [2023-11-28 23:58:15,931 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5396825396825397 [2023-11-28 23:58:15,931 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 170 transitions. [2023-11-28 23:58:15,931 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 170 transitions. [2023-11-28 23:58:15,931 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:58:15,931 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 170 transitions. [2023-11-28 23:58:15,932 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 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) [2023-11-28 23:58:15,932 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 105.0) internal successors, (420), 4 states have internal predecessors, (420), 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) [2023-11-28 23:58:15,933 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 105.0) internal successors, (420), 4 states have internal predecessors, (420), 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) [2023-11-28 23:58:15,933 INFO L175 Difference]: Start difference. First operand has 96 places, 130 transitions, 586 flow. Second operand 3 states and 170 transitions. [2023-11-28 23:58:15,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 162 transitions, 952 flow [2023-11-28 23:58:15,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 162 transitions, 949 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-28 23:58:15,940 INFO L231 Difference]: Finished difference. Result has 98 places, 130 transitions, 592 flow [2023-11-28 23:58:15,940 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=578, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=592, PETRI_PLACES=98, PETRI_TRANSITIONS=130} [2023-11-28 23:58:15,941 INFO L281 CegarLoopForPetriNet]: 100 programPoint places, -2 predicate places. [2023-11-28 23:58:15,941 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 130 transitions, 592 flow [2023-11-28 23:58:15,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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) [2023-11-28 23:58:15,942 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:58:15,942 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:58:15,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-28 23:58:15,942 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-28 23:58:15,943 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:58:15,943 INFO L85 PathProgramCache]: Analyzing trace with hash -347555583, now seen corresponding path program 1 times [2023-11-28 23:58:15,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:58:15,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785027384] [2023-11-28 23:58:15,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:58:15,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:58:15,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:58:16,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:58:16,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:58:16,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785027384] [2023-11-28 23:58:16,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785027384] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:58:16,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:58:16,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-28 23:58:16,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265899856] [2023-11-28 23:58:16,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:58:16,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 23:58:16,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:58:16,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 23:58:16,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 23:58:16,046 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 105 [2023-11-28 23:58:16,046 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 130 transitions, 592 flow. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 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) [2023-11-28 23:58:16,046 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:58:16,046 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 105 [2023-11-28 23:58:16,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:58:24,686 INFO L124 PetriNetUnfolderBase]: 64567/84670 cut-off events. [2023-11-28 23:58:24,686 INFO L125 PetriNetUnfolderBase]: For 6521/6521 co-relation queries the response was YES. [2023-11-28 23:58:24,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181555 conditions, 84670 events. 64567/84670 cut-off events. For 6521/6521 co-relation queries the response was YES. Maximal size of possible extension queue 3497. Compared 528868 event pairs, 16693 based on Foata normal form. 928/61162 useless extension candidates. Maximal degree in co-relation 181430. Up to 68475 conditions per place. [2023-11-28 23:58:25,209 INFO L140 encePairwiseOnDemand]: 101/105 looper letters, 143 selfloop transitions, 2 changer transitions 0/161 dead transitions. [2023-11-28 23:58:25,209 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 161 transitions, 957 flow [2023-11-28 23:58:25,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 23:58:25,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-28 23:58:25,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 170 transitions. [2023-11-28 23:58:25,210 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5396825396825397 [2023-11-28 23:58:25,210 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 170 transitions. [2023-11-28 23:58:25,210 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 170 transitions. [2023-11-28 23:58:25,210 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:58:25,210 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 170 transitions. [2023-11-28 23:58:25,211 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 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) [2023-11-28 23:58:25,212 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 105.0) internal successors, (420), 4 states have internal predecessors, (420), 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) [2023-11-28 23:58:25,212 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 105.0) internal successors, (420), 4 states have internal predecessors, (420), 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) [2023-11-28 23:58:25,212 INFO L175 Difference]: Start difference. First operand has 98 places, 130 transitions, 592 flow. Second operand 3 states and 170 transitions. [2023-11-28 23:58:25,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 161 transitions, 957 flow [2023-11-28 23:58:25,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 161 transitions, 955 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-28 23:58:25,225 INFO L231 Difference]: Finished difference. Result has 100 places, 130 transitions, 600 flow [2023-11-28 23:58:25,226 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=586, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=600, PETRI_PLACES=100, PETRI_TRANSITIONS=130} [2023-11-28 23:58:25,227 INFO L281 CegarLoopForPetriNet]: 100 programPoint places, 0 predicate places. [2023-11-28 23:58:25,227 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 130 transitions, 600 flow [2023-11-28 23:58:25,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 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) [2023-11-28 23:58:25,227 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:58:25,227 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2023-11-28 23:58:25,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-28 23:58:25,228 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-28 23:58:25,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:58:25,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1979770861, now seen corresponding path program 2 times [2023-11-28 23:58:25,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:58:25,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130276153] [2023-11-28 23:58:25,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:58:25,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:58:25,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:58:25,419 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:58:25,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:58:25,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130276153] [2023-11-28 23:58:25,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130276153] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:58:25,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [266341380] [2023-11-28 23:58:25,420 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-28 23:58:25,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:58:25,420 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1299b2ea-1dfa-4d9b-850f-cccaf9675e8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:58:25,422 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1299b2ea-1dfa-4d9b-850f-cccaf9675e8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:58:25,425 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1299b2ea-1dfa-4d9b-850f-cccaf9675e8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-28 23:58:25,571 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-28 23:58:25,571 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-28 23:58:25,572 INFO L262 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-28 23:58:25,574 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:58:25,626 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-28 23:58:25,627 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:58:25,665 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-28 23:58:25,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [266341380] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:58:25,666 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 23:58:25,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 12 [2023-11-28 23:58:25,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821674715] [2023-11-28 23:58:25,667 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 23:58:25,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-28 23:58:25,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:58:25,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-28 23:58:25,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2023-11-28 23:58:25,734 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 105 [2023-11-28 23:58:25,735 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 130 transitions, 600 flow. Second operand has 14 states, 14 states have (on average 17.142857142857142) internal successors, (240), 14 states have internal predecessors, (240), 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) [2023-11-28 23:58:25,735 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:58:25,735 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 105 [2023-11-28 23:58:25,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:58:35,580 INFO L124 PetriNetUnfolderBase]: 64571/85928 cut-off events. [2023-11-28 23:58:35,580 INFO L125 PetriNetUnfolderBase]: For 8877/8877 co-relation queries the response was YES. [2023-11-28 23:58:35,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 188018 conditions, 85928 events. 64571/85928 cut-off events. For 8877/8877 co-relation queries the response was YES. Maximal size of possible extension queue 3628. Compared 559059 event pairs, 53771 based on Foata normal form. 8/62840 useless extension candidates. Maximal degree in co-relation 187857. Up to 82792 conditions per place. [2023-11-28 23:58:36,114 INFO L140 encePairwiseOnDemand]: 88/105 looper letters, 56 selfloop transitions, 70 changer transitions 0/138 dead transitions. [2023-11-28 23:58:36,115 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 138 transitions, 891 flow [2023-11-28 23:58:36,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-28 23:58:36,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-28 23:58:36,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 355 transitions. [2023-11-28 23:58:36,117 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.24149659863945577 [2023-11-28 23:58:36,117 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 355 transitions. [2023-11-28 23:58:36,118 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 355 transitions. [2023-11-28 23:58:36,118 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:58:36,118 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 355 transitions. [2023-11-28 23:58:36,120 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 25.357142857142858) internal successors, (355), 14 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:58:36,123 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 105.0) internal successors, (1575), 15 states have internal predecessors, (1575), 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) [2023-11-28 23:58:36,124 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 105.0) internal successors, (1575), 15 states have internal predecessors, (1575), 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) [2023-11-28 23:58:36,124 INFO L175 Difference]: Start difference. First operand has 100 places, 130 transitions, 600 flow. Second operand 14 states and 355 transitions. [2023-11-28 23:58:36,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 138 transitions, 891 flow [2023-11-28 23:58:36,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 138 transitions, 841 flow, removed 8 selfloop flow, removed 5 redundant places. [2023-11-28 23:58:36,135 INFO L231 Difference]: Finished difference. Result has 104 places, 138 transitions, 729 flow [2023-11-28 23:58:36,135 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=518, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=729, PETRI_PLACES=104, PETRI_TRANSITIONS=138} [2023-11-28 23:58:36,136 INFO L281 CegarLoopForPetriNet]: 100 programPoint places, 4 predicate places. [2023-11-28 23:58:36,136 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 138 transitions, 729 flow [2023-11-28 23:58:36,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 17.142857142857142) internal successors, (240), 14 states have internal predecessors, (240), 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) [2023-11-28 23:58:36,136 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:58:36,136 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:58:36,141 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1299b2ea-1dfa-4d9b-850f-cccaf9675e8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-28 23:58:36,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1299b2ea-1dfa-4d9b-850f-cccaf9675e8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:58:36,337 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread4Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-28 23:58:36,338 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:58:36,338 INFO L85 PathProgramCache]: Analyzing trace with hash 1863527063, now seen corresponding path program 1 times [2023-11-28 23:58:36,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:58:36,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762069650] [2023-11-28 23:58:36,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:58:36,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:58:36,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:58:36,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:58:36,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:58:36,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762069650] [2023-11-28 23:58:36,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762069650] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:58:36,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:58:36,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-28 23:58:36,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883400230] [2023-11-28 23:58:36,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:58:36,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 23:58:36,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:58:36,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 23:58:36,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-28 23:58:36,486 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 105 [2023-11-28 23:58:36,486 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 138 transitions, 729 flow. Second operand has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 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) [2023-11-28 23:58:36,486 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:58:36,486 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 105 [2023-11-28 23:58:36,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:58:45,263 INFO L124 PetriNetUnfolderBase]: 66553/88941 cut-off events. [2023-11-28 23:58:45,264 INFO L125 PetriNetUnfolderBase]: For 9107/9107 co-relation queries the response was YES. [2023-11-28 23:58:45,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 193790 conditions, 88941 events. 66553/88941 cut-off events. For 9107/9107 co-relation queries the response was YES. Maximal size of possible extension queue 3587. Compared 580287 event pairs, 55736 based on Foata normal form. 340/65333 useless extension candidates. Maximal degree in co-relation 187253. Up to 82856 conditions per place. [2023-11-28 23:58:45,801 INFO L140 encePairwiseOnDemand]: 94/105 looper letters, 123 selfloop transitions, 2 changer transitions 81/218 dead transitions. [2023-11-28 23:58:45,802 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 218 transitions, 1613 flow [2023-11-28 23:58:45,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-28 23:58:45,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-28 23:58:45,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 232 transitions. [2023-11-28 23:58:45,804 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4419047619047619 [2023-11-28 23:58:45,804 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 232 transitions. [2023-11-28 23:58:45,804 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 232 transitions. [2023-11-28 23:58:45,804 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:58:45,804 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 232 transitions. [2023-11-28 23:58:45,805 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 46.4) internal successors, (232), 5 states have internal predecessors, (232), 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) [2023-11-28 23:58:45,807 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 105.0) internal successors, (630), 6 states have internal predecessors, (630), 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) [2023-11-28 23:58:45,807 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 105.0) internal successors, (630), 6 states have internal predecessors, (630), 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) [2023-11-28 23:58:45,808 INFO L175 Difference]: Start difference. First operand has 104 places, 138 transitions, 729 flow. Second operand 5 states and 232 transitions. [2023-11-28 23:58:45,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 218 transitions, 1613 flow [2023-11-28 23:58:45,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 218 transitions, 1174 flow, removed 32 selfloop flow, removed 12 redundant places. [2023-11-28 23:58:45,821 INFO L231 Difference]: Finished difference. Result has 98 places, 137 transitions, 510 flow [2023-11-28 23:58:45,821 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=478, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=510, PETRI_PLACES=98, PETRI_TRANSITIONS=137} [2023-11-28 23:58:45,822 INFO L281 CegarLoopForPetriNet]: 100 programPoint places, -2 predicate places. [2023-11-28 23:58:45,822 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 137 transitions, 510 flow [2023-11-28 23:58:45,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 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) [2023-11-28 23:58:45,823 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:58:45,823 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:58:45,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-28 23:58:45,823 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread4Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-28 23:58:45,823 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:58:45,824 INFO L85 PathProgramCache]: Analyzing trace with hash -1312945926, now seen corresponding path program 1 times [2023-11-28 23:58:45,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:58:45,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907356854] [2023-11-28 23:58:45,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:58:45,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:58:45,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:58:46,040 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:58:46,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:58:46,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907356854] [2023-11-28 23:58:46,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907356854] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:58:46,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [123303900] [2023-11-28 23:58:46,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:58:46,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:58:46,041 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1299b2ea-1dfa-4d9b-850f-cccaf9675e8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:58:46,044 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1299b2ea-1dfa-4d9b-850f-cccaf9675e8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:58:46,046 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1299b2ea-1dfa-4d9b-850f-cccaf9675e8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-28 23:58:46,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:58:46,233 INFO L262 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-28 23:58:46,235 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:58:46,272 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-28 23:58:46,273 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:58:46,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [123303900] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:58:46,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-28 23:58:46,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2023-11-28 23:58:46,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430702420] [2023-11-28 23:58:46,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:58:46,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 23:58:46,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:58:46,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 23:58:46,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-28 23:58:46,275 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 105 [2023-11-28 23:58:46,275 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 137 transitions, 510 flow. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:58:46,275 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:58:46,275 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 105 [2023-11-28 23:58:46,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:58:51,536 INFO L124 PetriNetUnfolderBase]: 37306/50123 cut-off events. [2023-11-28 23:58:51,536 INFO L125 PetriNetUnfolderBase]: For 7405/7405 co-relation queries the response was YES. [2023-11-28 23:58:51,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109736 conditions, 50123 events. 37306/50123 cut-off events. For 7405/7405 co-relation queries the response was YES. Maximal size of possible extension queue 2120. Compared 317080 event pairs, 30475 based on Foata normal form. 4098/40981 useless extension candidates. Maximal degree in co-relation 109712. Up to 48019 conditions per place. [2023-11-28 23:58:51,807 INFO L140 encePairwiseOnDemand]: 98/105 looper letters, 118 selfloop transitions, 1 changer transitions 0/131 dead transitions. [2023-11-28 23:58:51,807 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 131 transitions, 732 flow [2023-11-28 23:58:51,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 23:58:51,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-28 23:58:51,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 135 transitions. [2023-11-28 23:58:51,809 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2023-11-28 23:58:51,809 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 135 transitions. [2023-11-28 23:58:51,809 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 135 transitions. [2023-11-28 23:58:51,809 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:58:51,809 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 135 transitions. [2023-11-28 23:58:51,810 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 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) [2023-11-28 23:58:51,810 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 105.0) internal successors, (420), 4 states have internal predecessors, (420), 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) [2023-11-28 23:58:51,811 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 105.0) internal successors, (420), 4 states have internal predecessors, (420), 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) [2023-11-28 23:58:51,811 INFO L175 Difference]: Start difference. First operand has 98 places, 137 transitions, 510 flow. Second operand 3 states and 135 transitions. [2023-11-28 23:58:51,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 131 transitions, 732 flow [2023-11-28 23:58:51,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 131 transitions, 700 flow, removed 15 selfloop flow, removed 3 redundant places. [2023-11-28 23:58:51,817 INFO L231 Difference]: Finished difference. Result has 89 places, 131 transitions, 464 flow [2023-11-28 23:58:51,818 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=462, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=464, PETRI_PLACES=89, PETRI_TRANSITIONS=131} [2023-11-28 23:58:51,818 INFO L281 CegarLoopForPetriNet]: 100 programPoint places, -11 predicate places. [2023-11-28 23:58:51,819 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 131 transitions, 464 flow [2023-11-28 23:58:51,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:58:51,819 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:58:51,819 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:58:51,824 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1299b2ea-1dfa-4d9b-850f-cccaf9675e8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-28 23:58:52,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1299b2ea-1dfa-4d9b-850f-cccaf9675e8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:58:52,020 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread4Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-28 23:58:52,020 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:58:52,020 INFO L85 PathProgramCache]: Analyzing trace with hash -2046616426, now seen corresponding path program 1 times [2023-11-28 23:58:52,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:58:52,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783303951] [2023-11-28 23:58:52,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:58:52,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:58:52,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:58:52,092 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-28 23:58:52,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:58:52,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783303951] [2023-11-28 23:58:52,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783303951] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:58:52,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:58:52,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-28 23:58:52,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498444336] [2023-11-28 23:58:52,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:58:52,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 23:58:52,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:58:52,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 23:58:52,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 23:58:52,094 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 105 [2023-11-28 23:58:52,095 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 131 transitions, 464 flow. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 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) [2023-11-28 23:58:52,095 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:58:52,095 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 105 [2023-11-28 23:58:52,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:58:56,014 INFO L124 PetriNetUnfolderBase]: 32792/42791 cut-off events. [2023-11-28 23:58:56,014 INFO L125 PetriNetUnfolderBase]: For 6104/6104 co-relation queries the response was YES. [2023-11-28 23:58:56,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95516 conditions, 42791 events. 32792/42791 cut-off events. For 6104/6104 co-relation queries the response was YES. Maximal size of possible extension queue 1992. Compared 242851 event pairs, 9539 based on Foata normal form. 738/31647 useless extension candidates. Maximal degree in co-relation 95501. Up to 36675 conditions per place. [2023-11-28 23:58:56,242 INFO L140 encePairwiseOnDemand]: 101/105 looper letters, 139 selfloop transitions, 2 changer transitions 10/163 dead transitions. [2023-11-28 23:58:56,242 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 163 transitions, 847 flow [2023-11-28 23:58:56,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 23:58:56,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-28 23:58:56,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 166 transitions. [2023-11-28 23:58:56,244 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.526984126984127 [2023-11-28 23:58:56,244 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 166 transitions. [2023-11-28 23:58:56,244 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 166 transitions. [2023-11-28 23:58:56,244 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:58:56,244 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 166 transitions. [2023-11-28 23:58:56,245 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 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) [2023-11-28 23:58:56,246 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 105.0) internal successors, (420), 4 states have internal predecessors, (420), 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) [2023-11-28 23:58:56,246 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 105.0) internal successors, (420), 4 states have internal predecessors, (420), 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) [2023-11-28 23:58:56,246 INFO L175 Difference]: Start difference. First operand has 89 places, 131 transitions, 464 flow. Second operand 3 states and 166 transitions. [2023-11-28 23:58:56,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 163 transitions, 847 flow [2023-11-28 23:58:56,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 163 transitions, 846 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-28 23:58:56,250 INFO L231 Difference]: Finished difference. Result has 91 places, 132 transitions, 477 flow [2023-11-28 23:58:56,251 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=463, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=477, PETRI_PLACES=91, PETRI_TRANSITIONS=132} [2023-11-28 23:58:56,252 INFO L281 CegarLoopForPetriNet]: 100 programPoint places, -9 predicate places. [2023-11-28 23:58:56,252 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 132 transitions, 477 flow [2023-11-28 23:58:56,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 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) [2023-11-28 23:58:56,252 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:58:56,252 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:58:56,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-28 23:58:56,252 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-28 23:58:56,253 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:58:56,253 INFO L85 PathProgramCache]: Analyzing trace with hash 471185501, now seen corresponding path program 1 times [2023-11-28 23:58:56,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:58:56,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575057660] [2023-11-28 23:58:56,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:58:56,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:58:56,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:58:56,511 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-28 23:58:56,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:58:56,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575057660] [2023-11-28 23:58:56,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575057660] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:58:56,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:58:56,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 23:58:56,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232449446] [2023-11-28 23:58:56,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:58:56,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 23:58:56,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:58:56,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 23:58:56,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-28 23:58:56,514 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 105 [2023-11-28 23:58:56,515 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 132 transitions, 477 flow. Second operand has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 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) [2023-11-28 23:58:56,515 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:58:56,515 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 105 [2023-11-28 23:58:56,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:59:01,679 INFO L124 PetriNetUnfolderBase]: 35274/47382 cut-off events. [2023-11-28 23:59:01,679 INFO L125 PetriNetUnfolderBase]: For 7778/7778 co-relation queries the response was YES. [2023-11-28 23:59:01,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107381 conditions, 47382 events. 35274/47382 cut-off events. For 7778/7778 co-relation queries the response was YES. Maximal size of possible extension queue 2091. Compared 294683 event pairs, 28720 based on Foata normal form. 64/35290 useless extension candidates. Maximal degree in co-relation 107364. Up to 42130 conditions per place. [2023-11-28 23:59:01,939 INFO L140 encePairwiseOnDemand]: 99/105 looper letters, 111 selfloop transitions, 8 changer transitions 47/178 dead transitions. [2023-11-28 23:59:01,939 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 178 transitions, 945 flow [2023-11-28 23:59:01,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-28 23:59:01,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-28 23:59:01,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 189 transitions. [2023-11-28 23:59:01,941 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45 [2023-11-28 23:59:01,941 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 189 transitions. [2023-11-28 23:59:01,941 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 189 transitions. [2023-11-28 23:59:01,941 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:59:01,941 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 189 transitions. [2023-11-28 23:59:01,942 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 47.25) internal successors, (189), 4 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:59:01,943 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 105.0) internal successors, (525), 5 states have internal predecessors, (525), 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) [2023-11-28 23:59:01,943 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 105.0) internal successors, (525), 5 states have internal predecessors, (525), 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) [2023-11-28 23:59:01,943 INFO L175 Difference]: Start difference. First operand has 91 places, 132 transitions, 477 flow. Second operand 4 states and 189 transitions. [2023-11-28 23:59:01,943 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 178 transitions, 945 flow [2023-11-28 23:59:01,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 178 transitions, 943 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-28 23:59:01,953 INFO L231 Difference]: Finished difference. Result has 94 places, 131 transitions, 498 flow [2023-11-28 23:59:01,953 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=475, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=498, PETRI_PLACES=94, PETRI_TRANSITIONS=131} [2023-11-28 23:59:01,954 INFO L281 CegarLoopForPetriNet]: 100 programPoint places, -6 predicate places. [2023-11-28 23:59:01,954 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 131 transitions, 498 flow [2023-11-28 23:59:01,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 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) [2023-11-28 23:59:01,954 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:59:01,954 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:59:01,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-28 23:59:01,954 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-28 23:59:01,955 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:59:01,955 INFO L85 PathProgramCache]: Analyzing trace with hash 1535429429, now seen corresponding path program 1 times [2023-11-28 23:59:01,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:59:01,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010766551] [2023-11-28 23:59:01,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:59:01,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:59:01,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:59:02,158 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-28 23:59:02,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:59:02,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010766551] [2023-11-28 23:59:02,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010766551] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:59:02,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [771593405] [2023-11-28 23:59:02,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:59:02,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:59:02,159 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1299b2ea-1dfa-4d9b-850f-cccaf9675e8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:59:02,160 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1299b2ea-1dfa-4d9b-850f-cccaf9675e8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:59:02,163 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1299b2ea-1dfa-4d9b-850f-cccaf9675e8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-28 23:59:02,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:59:02,355 INFO L262 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-28 23:59:02,358 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:59:02,392 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-28 23:59:02,393 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:59:02,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [771593405] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:59:02,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-28 23:59:02,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2023-11-28 23:59:02,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373957060] [2023-11-28 23:59:02,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:59:02,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 23:59:02,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:59:02,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 23:59:02,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-28 23:59:02,395 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 105 [2023-11-28 23:59:02,395 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 131 transitions, 498 flow. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 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) [2023-11-28 23:59:02,396 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:59:02,396 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 105 [2023-11-28 23:59:02,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:59:06,033 INFO L124 PetriNetUnfolderBase]: 26687/35562 cut-off events. [2023-11-28 23:59:06,033 INFO L125 PetriNetUnfolderBase]: For 6979/6979 co-relation queries the response was YES. [2023-11-28 23:59:06,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80600 conditions, 35562 events. 26687/35562 cut-off events. For 6979/6979 co-relation queries the response was YES. Maximal size of possible extension queue 1647. Compared 213434 event pairs, 21129 based on Foata normal form. 536/27583 useless extension candidates. Maximal degree in co-relation 80581. Up to 34362 conditions per place. [2023-11-28 23:59:06,228 INFO L140 encePairwiseOnDemand]: 102/105 looper letters, 116 selfloop transitions, 1 changer transitions 0/129 dead transitions. [2023-11-28 23:59:06,228 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 129 transitions, 724 flow [2023-11-28 23:59:06,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 23:59:06,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-28 23:59:06,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 129 transitions. [2023-11-28 23:59:06,230 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4095238095238095 [2023-11-28 23:59:06,230 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 129 transitions. [2023-11-28 23:59:06,230 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 129 transitions. [2023-11-28 23:59:06,230 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:59:06,230 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 129 transitions. [2023-11-28 23:59:06,230 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 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) [2023-11-28 23:59:06,231 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 105.0) internal successors, (420), 4 states have internal predecessors, (420), 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) [2023-11-28 23:59:06,232 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 105.0) internal successors, (420), 4 states have internal predecessors, (420), 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) [2023-11-28 23:59:06,232 INFO L175 Difference]: Start difference. First operand has 94 places, 131 transitions, 498 flow. Second operand 3 states and 129 transitions. [2023-11-28 23:59:06,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 129 transitions, 724 flow [2023-11-28 23:59:06,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 129 transitions, 706 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-11-28 23:59:06,237 INFO L231 Difference]: Finished difference. Result has 91 places, 129 transitions, 474 flow [2023-11-28 23:59:06,237 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=472, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=474, PETRI_PLACES=91, PETRI_TRANSITIONS=129} [2023-11-28 23:59:06,238 INFO L281 CegarLoopForPetriNet]: 100 programPoint places, -9 predicate places. [2023-11-28 23:59:06,238 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 129 transitions, 474 flow [2023-11-28 23:59:06,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 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) [2023-11-28 23:59:06,238 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:59:06,238 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:59:06,243 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1299b2ea-1dfa-4d9b-850f-cccaf9675e8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-28 23:59:06,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1299b2ea-1dfa-4d9b-850f-cccaf9675e8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:59:06,439 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-28 23:59:06,439 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:59:06,439 INFO L85 PathProgramCache]: Analyzing trace with hash 353673614, now seen corresponding path program 1 times [2023-11-28 23:59:06,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:59:06,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631934862] [2023-11-28 23:59:06,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:59:06,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:59:06,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:59:06,614 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-28 23:59:06,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:59:06,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631934862] [2023-11-28 23:59:06,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631934862] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:59:06,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:59:06,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 23:59:06,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556807346] [2023-11-28 23:59:06,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:59:06,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 23:59:06,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:59:06,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 23:59:06,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-28 23:59:06,618 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 105 [2023-11-28 23:59:06,618 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 129 transitions, 474 flow. Second operand has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 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) [2023-11-28 23:59:06,618 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:59:06,618 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 105 [2023-11-28 23:59:06,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:59:10,537 INFO L124 PetriNetUnfolderBase]: 29263/39373 cut-off events. [2023-11-28 23:59:10,537 INFO L125 PetriNetUnfolderBase]: For 6665/6665 co-relation queries the response was YES. [2023-11-28 23:59:10,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88445 conditions, 39373 events. 29263/39373 cut-off events. For 6665/6665 co-relation queries the response was YES. Maximal size of possible extension queue 1644. Compared 240011 event pairs, 23690 based on Foata normal form. 96/29966 useless extension candidates. Maximal degree in co-relation 88427. Up to 34308 conditions per place. [2023-11-28 23:59:10,740 INFO L140 encePairwiseOnDemand]: 99/105 looper letters, 109 selfloop transitions, 7 changer transitions 32/160 dead transitions. [2023-11-28 23:59:10,740 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 160 transitions, 850 flow [2023-11-28 23:59:10,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-28 23:59:10,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-28 23:59:10,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 187 transitions. [2023-11-28 23:59:10,742 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4452380952380952 [2023-11-28 23:59:10,742 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 187 transitions. [2023-11-28 23:59:10,742 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 187 transitions. [2023-11-28 23:59:10,742 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:59:10,742 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 187 transitions. [2023-11-28 23:59:10,743 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 46.75) internal successors, (187), 4 states have internal predecessors, (187), 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) [2023-11-28 23:59:10,744 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 105.0) internal successors, (525), 5 states have internal predecessors, (525), 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) [2023-11-28 23:59:10,745 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 105.0) internal successors, (525), 5 states have internal predecessors, (525), 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) [2023-11-28 23:59:10,745 INFO L175 Difference]: Start difference. First operand has 91 places, 129 transitions, 474 flow. Second operand 4 states and 187 transitions. [2023-11-28 23:59:10,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 160 transitions, 850 flow [2023-11-28 23:59:10,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 160 transitions, 849 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-28 23:59:10,751 INFO L231 Difference]: Finished difference. Result has 94 places, 128 transitions, 493 flow [2023-11-28 23:59:10,751 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=473, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=493, PETRI_PLACES=94, PETRI_TRANSITIONS=128} [2023-11-28 23:59:10,752 INFO L281 CegarLoopForPetriNet]: 100 programPoint places, -6 predicate places. [2023-11-28 23:59:10,752 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 128 transitions, 493 flow [2023-11-28 23:59:10,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 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) [2023-11-28 23:59:10,752 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:59:10,752 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:59:10,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-28 23:59:10,752 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-28 23:59:10,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:59:10,753 INFO L85 PathProgramCache]: Analyzing trace with hash 237732625, now seen corresponding path program 1 times [2023-11-28 23:59:10,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:59:10,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689665638] [2023-11-28 23:59:10,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:59:10,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:59:10,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:59:10,977 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-28 23:59:10,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:59:10,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689665638] [2023-11-28 23:59:10,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689665638] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:59:10,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1673827311] [2023-11-28 23:59:10,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:59:10,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:59:10,979 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1299b2ea-1dfa-4d9b-850f-cccaf9675e8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:59:10,980 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1299b2ea-1dfa-4d9b-850f-cccaf9675e8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:59:10,985 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1299b2ea-1dfa-4d9b-850f-cccaf9675e8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-28 23:59:11,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:59:11,186 INFO L262 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-28 23:59:11,189 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:59:11,231 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-28 23:59:11,231 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:59:11,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1673827311] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:59:11,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-28 23:59:11,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2023-11-28 23:59:11,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692354512] [2023-11-28 23:59:11,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:59:11,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 23:59:11,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:59:11,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 23:59:11,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-28 23:59:11,234 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 105 [2023-11-28 23:59:11,234 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 128 transitions, 493 flow. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:59:11,234 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:59:11,234 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 105 [2023-11-28 23:59:11,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:59:14,319 INFO L124 PetriNetUnfolderBase]: 21630/29019 cut-off events. [2023-11-28 23:59:14,319 INFO L125 PetriNetUnfolderBase]: For 5418/5418 co-relation queries the response was YES. [2023-11-28 23:59:14,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65131 conditions, 29019 events. 21630/29019 cut-off events. For 5418/5418 co-relation queries the response was YES. Maximal size of possible extension queue 1338. Compared 172208 event pairs, 16971 based on Foata normal form. 480/23036 useless extension candidates. Maximal degree in co-relation 65111. Up to 27901 conditions per place. [2023-11-28 23:59:14,471 INFO L140 encePairwiseOnDemand]: 102/105 looper letters, 113 selfloop transitions, 1 changer transitions 0/126 dead transitions. [2023-11-28 23:59:14,472 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 126 transitions, 713 flow [2023-11-28 23:59:14,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 23:59:14,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-28 23:59:14,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 127 transitions. [2023-11-28 23:59:14,473 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4031746031746032 [2023-11-28 23:59:14,473 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 127 transitions. [2023-11-28 23:59:14,474 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 127 transitions. [2023-11-28 23:59:14,474 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:59:14,474 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 127 transitions. [2023-11-28 23:59:14,475 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 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) [2023-11-28 23:59:14,476 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 105.0) internal successors, (420), 4 states have internal predecessors, (420), 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) [2023-11-28 23:59:14,476 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 105.0) internal successors, (420), 4 states have internal predecessors, (420), 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) [2023-11-28 23:59:14,476 INFO L175 Difference]: Start difference. First operand has 94 places, 128 transitions, 493 flow. Second operand 3 states and 127 transitions. [2023-11-28 23:59:14,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 126 transitions, 713 flow [2023-11-28 23:59:14,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 126 transitions, 697 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-11-28 23:59:14,484 INFO L231 Difference]: Finished difference. Result has 91 places, 126 transitions, 471 flow [2023-11-28 23:59:14,484 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=469, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=471, PETRI_PLACES=91, PETRI_TRANSITIONS=126} [2023-11-28 23:59:14,485 INFO L281 CegarLoopForPetriNet]: 100 programPoint places, -9 predicate places. [2023-11-28 23:59:14,485 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 126 transitions, 471 flow [2023-11-28 23:59:14,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:59:14,485 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:59:14,485 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:59:14,491 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1299b2ea-1dfa-4d9b-850f-cccaf9675e8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-28 23:59:14,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1299b2ea-1dfa-4d9b-850f-cccaf9675e8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:59:14,686 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-28 23:59:14,686 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:59:14,687 INFO L85 PathProgramCache]: Analyzing trace with hash -106876648, now seen corresponding path program 1 times [2023-11-28 23:59:14,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:59:14,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227692570] [2023-11-28 23:59:14,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:59:14,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:59:14,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:59:14,865 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-28 23:59:14,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:59:14,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227692570] [2023-11-28 23:59:14,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227692570] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:59:14,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:59:14,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 23:59:14,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663704343] [2023-11-28 23:59:14,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:59:14,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 23:59:14,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:59:14,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 23:59:14,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-28 23:59:14,867 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 105 [2023-11-28 23:59:14,867 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 126 transitions, 471 flow. Second operand has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 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) [2023-11-28 23:59:14,867 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:59:14,868 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 105 [2023-11-28 23:59:14,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:59:18,227 INFO L124 PetriNetUnfolderBase]: 24804/33740 cut-off events. [2023-11-28 23:59:18,227 INFO L125 PetriNetUnfolderBase]: For 5652/5652 co-relation queries the response was YES. [2023-11-28 23:59:18,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74940 conditions, 33740 events. 24804/33740 cut-off events. For 5652/5652 co-relation queries the response was YES. Maximal size of possible extension queue 1316. Compared 204836 event pairs, 19976 based on Foata normal form. 144/26279 useless extension candidates. Maximal degree in co-relation 74921. Up to 27882 conditions per place. [2023-11-28 23:59:18,394 INFO L140 encePairwiseOnDemand]: 99/105 looper letters, 106 selfloop transitions, 7 changer transitions 71/196 dead transitions. [2023-11-28 23:59:18,394 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 196 transitions, 1080 flow [2023-11-28 23:59:18,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-28 23:59:18,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-28 23:59:18,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 196 transitions. [2023-11-28 23:59:18,396 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2023-11-28 23:59:18,396 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 196 transitions. [2023-11-28 23:59:18,396 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 196 transitions. [2023-11-28 23:59:18,396 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:59:18,396 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 196 transitions. [2023-11-28 23:59:18,397 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 49.0) internal successors, (196), 4 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:59:18,398 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 105.0) internal successors, (525), 5 states have internal predecessors, (525), 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) [2023-11-28 23:59:18,398 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 105.0) internal successors, (525), 5 states have internal predecessors, (525), 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) [2023-11-28 23:59:18,398 INFO L175 Difference]: Start difference. First operand has 91 places, 126 transitions, 471 flow. Second operand 4 states and 196 transitions. [2023-11-28 23:59:18,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 196 transitions, 1080 flow [2023-11-28 23:59:18,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 196 transitions, 1079 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-28 23:59:18,403 INFO L231 Difference]: Finished difference. Result has 94 places, 125 transitions, 489 flow [2023-11-28 23:59:18,403 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=470, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=489, PETRI_PLACES=94, PETRI_TRANSITIONS=125} [2023-11-28 23:59:18,404 INFO L281 CegarLoopForPetriNet]: 100 programPoint places, -6 predicate places. [2023-11-28 23:59:18,404 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 125 transitions, 489 flow [2023-11-28 23:59:18,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 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) [2023-11-28 23:59:18,405 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:59:18,405 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:59:18,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-28 23:59:18,405 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-28 23:59:18,406 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:59:18,406 INFO L85 PathProgramCache]: Analyzing trace with hash 883820112, now seen corresponding path program 1 times [2023-11-28 23:59:18,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:59:18,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997040370] [2023-11-28 23:59:18,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:59:18,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:59:18,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:59:18,585 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-28 23:59:18,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:59:18,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997040370] [2023-11-28 23:59:18,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997040370] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:59:18,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1965037276] [2023-11-28 23:59:18,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:59:18,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:59:18,586 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1299b2ea-1dfa-4d9b-850f-cccaf9675e8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:59:18,587 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1299b2ea-1dfa-4d9b-850f-cccaf9675e8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:59:18,592 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1299b2ea-1dfa-4d9b-850f-cccaf9675e8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-28 23:59:18,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:59:18,815 INFO L262 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-28 23:59:18,818 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:59:18,879 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-28 23:59:18,879 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:59:18,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1965037276] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:59:18,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-28 23:59:18,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 8 [2023-11-28 23:59:18,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041694722] [2023-11-28 23:59:18,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:59:18,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 23:59:18,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:59:18,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 23:59:18,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-28 23:59:18,880 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 105 [2023-11-28 23:59:18,881 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 125 transitions, 489 flow. Second operand has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 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) [2023-11-28 23:59:18,881 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:59:18,881 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 105 [2023-11-28 23:59:18,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:59:26,927 INFO L124 PetriNetUnfolderBase]: 56017/74662 cut-off events. [2023-11-28 23:59:26,927 INFO L125 PetriNetUnfolderBase]: For 16004/16004 co-relation queries the response was YES. [2023-11-28 23:59:27,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 171205 conditions, 74662 events. 56017/74662 cut-off events. For 16004/16004 co-relation queries the response was YES. Maximal size of possible extension queue 2605. Compared 470536 event pairs, 20704 based on Foata normal form. 1378/59735 useless extension candidates. Maximal degree in co-relation 171184. Up to 25827 conditions per place. [2023-11-28 23:59:27,387 INFO L140 encePairwiseOnDemand]: 98/105 looper letters, 169 selfloop transitions, 11 changer transitions 0/192 dead transitions. [2023-11-28 23:59:27,387 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 192 transitions, 1047 flow [2023-11-28 23:59:27,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-28 23:59:27,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-28 23:59:27,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 215 transitions. [2023-11-28 23:59:27,389 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5119047619047619 [2023-11-28 23:59:27,389 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 215 transitions. [2023-11-28 23:59:27,390 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 215 transitions. [2023-11-28 23:59:27,390 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:59:27,390 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 215 transitions. [2023-11-28 23:59:27,390 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 53.75) internal successors, (215), 4 states have internal predecessors, (215), 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) [2023-11-28 23:59:27,391 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 105.0) internal successors, (525), 5 states have internal predecessors, (525), 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) [2023-11-28 23:59:27,392 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 105.0) internal successors, (525), 5 states have internal predecessors, (525), 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) [2023-11-28 23:59:27,392 INFO L175 Difference]: Start difference. First operand has 94 places, 125 transitions, 489 flow. Second operand 4 states and 215 transitions. [2023-11-28 23:59:27,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 192 transitions, 1047 flow [2023-11-28 23:59:27,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 192 transitions, 1001 flow, removed 6 selfloop flow, removed 4 redundant places. [2023-11-28 23:59:27,411 INFO L231 Difference]: Finished difference. Result has 95 places, 134 transitions, 541 flow [2023-11-28 23:59:27,412 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=451, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=541, PETRI_PLACES=95, PETRI_TRANSITIONS=134} [2023-11-28 23:59:27,412 INFO L281 CegarLoopForPetriNet]: 100 programPoint places, -5 predicate places. [2023-11-28 23:59:27,412 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 134 transitions, 541 flow [2023-11-28 23:59:27,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 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) [2023-11-28 23:59:27,413 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:59:27,413 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:59:27,419 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1299b2ea-1dfa-4d9b-850f-cccaf9675e8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-28 23:59:27,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1299b2ea-1dfa-4d9b-850f-cccaf9675e8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-28 23:59:27,614 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-28 23:59:27,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:59:27,614 INFO L85 PathProgramCache]: Analyzing trace with hash -1376132347, now seen corresponding path program 1 times [2023-11-28 23:59:27,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:59:27,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685370771] [2023-11-28 23:59:27,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:59:27,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:59:27,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:59:27,887 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-28 23:59:27,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:59:27,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685370771] [2023-11-28 23:59:27,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685370771] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:59:27,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1078509342] [2023-11-28 23:59:27,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:59:27,888 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:59:27,888 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1299b2ea-1dfa-4d9b-850f-cccaf9675e8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:59:27,890 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1299b2ea-1dfa-4d9b-850f-cccaf9675e8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:59:27,896 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1299b2ea-1dfa-4d9b-850f-cccaf9675e8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-28 23:59:28,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:59:28,129 INFO L262 TraceCheckSpWp]: Trace formula consists of 458 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-28 23:59:28,132 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:59:28,259 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-28 23:59:28,259 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:59:28,425 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-28 23:59:28,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1078509342] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:59:28,426 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 23:59:28,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 15 [2023-11-28 23:59:28,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631281107] [2023-11-28 23:59:28,426 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 23:59:28,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-28 23:59:28,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:59:28,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-28 23:59:28,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2023-11-28 23:59:28,515 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 105 [2023-11-28 23:59:28,516 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 134 transitions, 541 flow. Second operand has 15 states, 15 states have (on average 21.133333333333333) internal successors, (317), 15 states have internal predecessors, (317), 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) [2023-11-28 23:59:28,516 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:59:28,516 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 105 [2023-11-28 23:59:28,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:59:39,638 INFO L124 PetriNetUnfolderBase]: 71246/96436 cut-off events. [2023-11-28 23:59:39,638 INFO L125 PetriNetUnfolderBase]: For 49384/49384 co-relation queries the response was YES. [2023-11-28 23:59:39,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 239847 conditions, 96436 events. 71246/96436 cut-off events. For 49384/49384 co-relation queries the response was YES. Maximal size of possible extension queue 2732. Compared 632811 event pairs, 52114 based on Foata normal form. 2618/77808 useless extension candidates. Maximal degree in co-relation 239826. Up to 72127 conditions per place. [2023-11-28 23:59:40,162 INFO L140 encePairwiseOnDemand]: 88/105 looper letters, 68 selfloop transitions, 52 changer transitions 264/396 dead transitions. [2023-11-28 23:59:40,162 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 396 transitions, 2233 flow [2023-11-28 23:59:40,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-28 23:59:40,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-11-28 23:59:40,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 533 transitions. [2023-11-28 23:59:40,166 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2671679197994987 [2023-11-28 23:59:40,166 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 533 transitions. [2023-11-28 23:59:40,166 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 533 transitions. [2023-11-28 23:59:40,167 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:59:40,167 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 533 transitions. [2023-11-28 23:59:40,169 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 28.05263157894737) internal successors, (533), 19 states have internal predecessors, (533), 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) [2023-11-28 23:59:40,173 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 105.0) internal successors, (2100), 20 states have internal predecessors, (2100), 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) [2023-11-28 23:59:40,174 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 105.0) internal successors, (2100), 20 states have internal predecessors, (2100), 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) [2023-11-28 23:59:40,174 INFO L175 Difference]: Start difference. First operand has 95 places, 134 transitions, 541 flow. Second operand 19 states and 533 transitions. [2023-11-28 23:59:40,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 396 transitions, 2233 flow [2023-11-28 23:59:40,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 396 transitions, 2215 flow, removed 9 selfloop flow, removed 0 redundant places. [2023-11-28 23:59:40,194 INFO L231 Difference]: Finished difference. Result has 118 places, 132 transitions, 658 flow [2023-11-28 23:59:40,194 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=533, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=658, PETRI_PLACES=118, PETRI_TRANSITIONS=132} [2023-11-28 23:59:40,194 INFO L281 CegarLoopForPetriNet]: 100 programPoint places, 18 predicate places. [2023-11-28 23:59:40,195 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 132 transitions, 658 flow [2023-11-28 23:59:40,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 21.133333333333333) internal successors, (317), 15 states have internal predecessors, (317), 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) [2023-11-28 23:59:40,195 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:59:40,195 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:59:40,200 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1299b2ea-1dfa-4d9b-850f-cccaf9675e8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-28 23:59:40,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1299b2ea-1dfa-4d9b-850f-cccaf9675e8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-28 23:59:40,396 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-28 23:59:40,396 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:59:40,396 INFO L85 PathProgramCache]: Analyzing trace with hash 1694579074, now seen corresponding path program 2 times [2023-11-28 23:59:40,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:59:40,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188609072] [2023-11-28 23:59:40,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:59:40,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:59:40,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:59:40,728 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-28 23:59:40,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:59:40,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188609072] [2023-11-28 23:59:40,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188609072] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:59:40,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1151378291] [2023-11-28 23:59:40,728 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-28 23:59:40,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:59:40,729 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1299b2ea-1dfa-4d9b-850f-cccaf9675e8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:59:40,730 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1299b2ea-1dfa-4d9b-850f-cccaf9675e8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:59:40,732 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1299b2ea-1dfa-4d9b-850f-cccaf9675e8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-28 23:59:40,932 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-28 23:59:40,932 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-28 23:59:40,934 INFO L262 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-28 23:59:40,937 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:59:41,003 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-28 23:59:41,003 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:59:41,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1151378291] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:59:41,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-28 23:59:41,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2023-11-28 23:59:41,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057552992] [2023-11-28 23:59:41,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:59:41,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 23:59:41,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:59:41,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 23:59:41,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-11-28 23:59:41,005 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 105 [2023-11-28 23:59:41,005 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 132 transitions, 658 flow. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 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) [2023-11-28 23:59:41,005 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:59:41,006 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 105 [2023-11-28 23:59:41,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:59:47,746 INFO L124 PetriNetUnfolderBase]: 42941/57388 cut-off events. [2023-11-28 23:59:47,746 INFO L125 PetriNetUnfolderBase]: For 43325/43325 co-relation queries the response was YES. [2023-11-28 23:59:47,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 147442 conditions, 57388 events. 42941/57388 cut-off events. For 43325/43325 co-relation queries the response was YES. Maximal size of possible extension queue 2087. Compared 355643 event pairs, 30817 based on Foata normal form. 1260/47382 useless extension candidates. Maximal degree in co-relation 147414. Up to 55476 conditions per place. [2023-11-28 23:59:47,993 INFO L140 encePairwiseOnDemand]: 102/105 looper letters, 0 selfloop transitions, 0 changer transitions 130/130 dead transitions. [2023-11-28 23:59:47,993 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 130 transitions, 884 flow [2023-11-28 23:59:47,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 23:59:47,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-28 23:59:47,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 125 transitions. [2023-11-28 23:59:47,995 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3968253968253968 [2023-11-28 23:59:47,995 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 125 transitions. [2023-11-28 23:59:47,995 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 125 transitions. [2023-11-28 23:59:47,995 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:59:47,995 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 125 transitions. [2023-11-28 23:59:47,995 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 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) [2023-11-28 23:59:47,996 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 105.0) internal successors, (420), 4 states have internal predecessors, (420), 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) [2023-11-28 23:59:47,996 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 105.0) internal successors, (420), 4 states have internal predecessors, (420), 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) [2023-11-28 23:59:47,996 INFO L175 Difference]: Start difference. First operand has 118 places, 132 transitions, 658 flow. Second operand 3 states and 125 transitions. [2023-11-28 23:59:47,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 130 transitions, 884 flow [2023-11-28 23:59:48,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 130 transitions, 850 flow, removed 7 selfloop flow, removed 7 redundant places. [2023-11-28 23:59:48,261 INFO L231 Difference]: Finished difference. Result has 104 places, 0 transitions, 0 flow [2023-11-28 23:59:48,261 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=614, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=104, PETRI_TRANSITIONS=0} [2023-11-28 23:59:48,261 INFO L281 CegarLoopForPetriNet]: 100 programPoint places, 4 predicate places. [2023-11-28 23:59:48,261 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 0 transitions, 0 flow [2023-11-28 23:59:48,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 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) [2023-11-28 23:59:48,264 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (59 of 60 remaining) [2023-11-28 23:59:48,264 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (58 of 60 remaining) [2023-11-28 23:59:48,264 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (57 of 60 remaining) [2023-11-28 23:59:48,264 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (56 of 60 remaining) [2023-11-28 23:59:48,264 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (55 of 60 remaining) [2023-11-28 23:59:48,264 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (54 of 60 remaining) [2023-11-28 23:59:48,264 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (53 of 60 remaining) [2023-11-28 23:59:48,265 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (52 of 60 remaining) [2023-11-28 23:59:48,265 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (51 of 60 remaining) [2023-11-28 23:59:48,265 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (50 of 60 remaining) [2023-11-28 23:59:48,265 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW (49 of 60 remaining) [2023-11-28 23:59:48,265 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (48 of 60 remaining) [2023-11-28 23:59:48,265 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (47 of 60 remaining) [2023-11-28 23:59:48,265 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (46 of 60 remaining) [2023-11-28 23:59:48,265 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (45 of 60 remaining) [2023-11-28 23:59:48,265 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (44 of 60 remaining) [2023-11-28 23:59:48,266 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (43 of 60 remaining) [2023-11-28 23:59:48,266 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (42 of 60 remaining) [2023-11-28 23:59:48,266 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (41 of 60 remaining) [2023-11-28 23:59:48,266 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (40 of 60 remaining) [2023-11-28 23:59:48,266 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (39 of 60 remaining) [2023-11-28 23:59:48,266 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (38 of 60 remaining) [2023-11-28 23:59:48,266 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (37 of 60 remaining) [2023-11-28 23:59:48,266 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (36 of 60 remaining) [2023-11-28 23:59:48,266 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (35 of 60 remaining) [2023-11-28 23:59:48,267 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (34 of 60 remaining) [2023-11-28 23:59:48,267 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 60 remaining) [2023-11-28 23:59:48,267 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 60 remaining) [2023-11-28 23:59:48,267 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (31 of 60 remaining) [2023-11-28 23:59:48,267 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (30 of 60 remaining) [2023-11-28 23:59:48,267 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (29 of 60 remaining) [2023-11-28 23:59:48,268 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (28 of 60 remaining) [2023-11-28 23:59:48,268 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread4Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 60 remaining) [2023-11-28 23:59:48,268 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread4Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 60 remaining) [2023-11-28 23:59:48,268 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread4Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 60 remaining) [2023-11-28 23:59:48,268 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread4Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 60 remaining) [2023-11-28 23:59:48,268 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 60 remaining) [2023-11-28 23:59:48,269 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 60 remaining) [2023-11-28 23:59:48,269 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 60 remaining) [2023-11-28 23:59:48,269 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 60 remaining) [2023-11-28 23:59:48,269 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 60 remaining) [2023-11-28 23:59:48,269 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 60 remaining) [2023-11-28 23:59:48,269 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 60 remaining) [2023-11-28 23:59:48,270 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 60 remaining) [2023-11-28 23:59:48,270 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 60 remaining) [2023-11-28 23:59:48,270 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 60 remaining) [2023-11-28 23:59:48,270 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 60 remaining) [2023-11-28 23:59:48,270 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 60 remaining) [2023-11-28 23:59:48,270 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 60 remaining) [2023-11-28 23:59:48,270 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 60 remaining) [2023-11-28 23:59:48,271 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 60 remaining) [2023-11-28 23:59:48,271 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 60 remaining) [2023-11-28 23:59:48,271 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 60 remaining) [2023-11-28 23:59:48,271 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 60 remaining) [2023-11-28 23:59:48,271 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 60 remaining) [2023-11-28 23:59:48,271 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 60 remaining) [2023-11-28 23:59:48,272 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread4Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 60 remaining) [2023-11-28 23:59:48,272 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread4Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 60 remaining) [2023-11-28 23:59:48,272 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread4Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 60 remaining) [2023-11-28 23:59:48,272 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread4Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 60 remaining) [2023-11-28 23:59:48,277 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1299b2ea-1dfa-4d9b-850f-cccaf9675e8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-28 23:59:48,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1299b2ea-1dfa-4d9b-850f-cccaf9675e8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-28 23:59:48,473 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:59:48,479 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-28 23:59:48,479 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-28 23:59:48,484 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 11:59:48 BasicIcfg [2023-11-28 23:59:48,484 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-28 23:59:48,485 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-28 23:59:48,485 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-28 23:59:48,485 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-28 23:59:48,486 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:57:18" (3/4) ... [2023-11-28 23:59:48,487 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-28 23:59:48,489 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-11-28 23:59:48,489 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-11-28 23:59:48,489 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2023-11-28 23:59:48,489 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread4 [2023-11-28 23:59:48,501 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 245 nodes and edges [2023-11-28 23:59:48,502 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 45 nodes and edges [2023-11-28 23:59:48,503 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2023-11-28 23:59:48,504 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-28 23:59:48,629 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1299b2ea-1dfa-4d9b-850f-cccaf9675e8d/bin/uautomizer-verify-BQ2R08f2Ya/witness.graphml [2023-11-28 23:59:48,630 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1299b2ea-1dfa-4d9b-850f-cccaf9675e8d/bin/uautomizer-verify-BQ2R08f2Ya/witness.yml [2023-11-28 23:59:48,630 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-28 23:59:48,631 INFO L158 Benchmark]: Toolchain (without parser) took 152325.28ms. Allocated memory was 157.3MB in the beginning and 13.4GB in the end (delta: 13.3GB). Free memory was 123.5MB in the beginning and 5.3GB in the end (delta: -5.2GB). Peak memory consumption was 8.1GB. Max. memory is 16.1GB. [2023-11-28 23:59:48,631 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 121.6MB. Free memory is still 91.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-28 23:59:48,632 INFO L158 Benchmark]: CACSL2BoogieTranslator took 348.37ms. Allocated memory is still 157.3MB. Free memory was 123.5MB in the beginning and 122.3MB in the end (delta: 1.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-28 23:59:48,632 INFO L158 Benchmark]: Boogie Procedure Inliner took 57.94ms. Allocated memory is still 157.3MB. Free memory was 122.3MB in the beginning and 119.1MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-28 23:59:48,633 INFO L158 Benchmark]: Boogie Preprocessor took 80.30ms. Allocated memory is still 157.3MB. Free memory was 119.1MB in the beginning and 114.9MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-28 23:59:48,633 INFO L158 Benchmark]: RCFGBuilder took 1502.53ms. Allocated memory was 157.3MB in the beginning and 190.8MB in the end (delta: 33.6MB). Free memory was 114.9MB in the beginning and 126.5MB in the end (delta: -11.6MB). Peak memory consumption was 76.2MB. Max. memory is 16.1GB. [2023-11-28 23:59:48,633 INFO L158 Benchmark]: TraceAbstraction took 150183.57ms. Allocated memory was 190.8MB in the beginning and 13.4GB in the end (delta: 13.3GB). Free memory was 126.5MB in the beginning and 5.3GB in the end (delta: -5.2GB). Peak memory consumption was 9.0GB. Max. memory is 16.1GB. [2023-11-28 23:59:48,634 INFO L158 Benchmark]: Witness Printer took 145.08ms. Allocated memory is still 13.4GB. Free memory was 5.3GB in the beginning and 5.3GB in the end (delta: 7.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-28 23:59:48,636 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 121.6MB. Free memory is still 91.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 348.37ms. Allocated memory is still 157.3MB. Free memory was 123.5MB in the beginning and 122.3MB in the end (delta: 1.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 57.94ms. Allocated memory is still 157.3MB. Free memory was 122.3MB in the beginning and 119.1MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 80.30ms. Allocated memory is still 157.3MB. Free memory was 119.1MB in the beginning and 114.9MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1502.53ms. Allocated memory was 157.3MB in the beginning and 190.8MB in the end (delta: 33.6MB). Free memory was 114.9MB in the beginning and 126.5MB in the end (delta: -11.6MB). Peak memory consumption was 76.2MB. Max. memory is 16.1GB. * TraceAbstraction took 150183.57ms. Allocated memory was 190.8MB in the beginning and 13.4GB in the end (delta: 13.3GB). Free memory was 126.5MB in the beginning and 5.3GB in the end (delta: -5.2GB). Peak memory consumption was 9.0GB. Max. memory is 16.1GB. * Witness Printer took 145.08ms. Allocated memory is still 13.4GB. Free memory was 5.3GB in the beginning and 5.3GB in the end (delta: 7.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 56]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 56]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 62]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 62]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 68]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 68]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 74]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 74]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 80]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 80]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 86]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 86]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 98]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 98]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 104]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 104]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 116]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 116]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 122]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 122]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 196]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 196]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 196]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 196]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 196]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 196]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 196]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 196]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 134]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 134]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 140]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 140]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 154 locations, 60 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 150.0s, OverallIterations: 18, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 142.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1042 SdHoareTripleChecker+Valid, 3.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 992 mSDsluCounter, 280 SdHoareTripleChecker+Invalid, 3.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 272 mSDsCounter, 316 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3725 IncrementalHoareTripleChecker+Invalid, 4041 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 316 mSolverCounterUnsat, 8 mSDtfsCounter, 3725 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 398 GetRequests, 283 SyntacticMatches, 2 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=729occurred in iteration=7, InterpolantAutomatonStates: 98, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 3.4s InterpolantComputationTime, 643 NumberOfCodeBlocks, 598 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 682 ConstructedInterpolants, 0 QuantifiedInterpolants, 2074 SizeOfPredicates, 12 NumberOfNonLiveVariables, 2696 ConjunctsInSsa, 45 ConjunctsInUnsatCore, 30 InterpolantComputations, 15 PerfectInterpolantSequences, 117/186 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 32 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-28 23:59:48,657 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1299b2ea-1dfa-4d9b-850f-cccaf9675e8d/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE