./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-bad-dot-product.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_c0e2d9b7-1a58-4f05-921e-7fb4fb5ad9f0/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e2d9b7-1a58-4f05-921e-7fb4fb5ad9f0/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_c0e2d9b7-1a58-4f05-921e-7fb4fb5ad9f0/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e2d9b7-1a58-4f05-921e-7fb4fb5ad9f0/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-bad-dot-product.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e2d9b7-1a58-4f05-921e-7fb4fb5ad9f0/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_c0e2d9b7-1a58-4f05-921e-7fb4fb5ad9f0/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 39e90898aa78f5642c5c7d6f9df6b2e15e069a046a9465d5d61576c4b07f46b8 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 03:11:41,297 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 03:11:41,382 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e2d9b7-1a58-4f05-921e-7fb4fb5ad9f0/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-29 03:11:41,387 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 03:11:41,387 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 03:11:41,412 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 03:11:41,413 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 03:11:41,414 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 03:11:41,414 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 03:11:41,415 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 03:11:41,415 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 03:11:41,416 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 03:11:41,417 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 03:11:41,417 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 03:11:41,418 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 03:11:41,418 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 03:11:41,419 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 03:11:41,419 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 03:11:41,420 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 03:11:41,420 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 03:11:41,420 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 03:11:41,424 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 03:11:41,425 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 03:11:41,425 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 03:11:41,425 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-29 03:11:41,426 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 03:11:41,426 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 03:11:41,426 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 03:11:41,427 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 03:11:41,427 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 03:11:41,427 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 03:11:41,428 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 03:11:41,428 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 03:11:41,428 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 03:11:41,429 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 03:11:41,429 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 03:11:41,429 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 03:11:41,429 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 03:11:41,429 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 03:11:41,430 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 03:11:41,430 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 03:11:41,430 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 03:11:41,430 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 03:11:41,431 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 03:11:41,431 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_c0e2d9b7-1a58-4f05-921e-7fb4fb5ad9f0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e2d9b7-1a58-4f05-921e-7fb4fb5ad9f0/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 39e90898aa78f5642c5c7d6f9df6b2e15e069a046a9465d5d61576c4b07f46b8 [2023-11-29 03:11:41,642 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 03:11:41,662 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 03:11:41,665 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 03:11:41,666 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 03:11:41,666 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 03:11:41,668 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e2d9b7-1a58-4f05-921e-7fb4fb5ad9f0/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/weaver/popl20-bad-dot-product.wvr.c [2023-11-29 03:11:44,449 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 03:11:44,637 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 03:11:44,637 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e2d9b7-1a58-4f05-921e-7fb4fb5ad9f0/sv-benchmarks/c/weaver/popl20-bad-dot-product.wvr.c [2023-11-29 03:11:44,645 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e2d9b7-1a58-4f05-921e-7fb4fb5ad9f0/bin/uautomizer-verify-BQ2R08f2Ya/data/7a91f53e7/ca0786748542416fb359540e63136d2d/FLAGbc98268ab [2023-11-29 03:11:44,658 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e2d9b7-1a58-4f05-921e-7fb4fb5ad9f0/bin/uautomizer-verify-BQ2R08f2Ya/data/7a91f53e7/ca0786748542416fb359540e63136d2d [2023-11-29 03:11:44,660 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 03:11:44,661 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 03:11:44,662 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 03:11:44,663 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 03:11:44,667 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 03:11:44,668 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 03:11:44" (1/1) ... [2023-11-29 03:11:44,669 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@327c0a46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:11:44, skipping insertion in model container [2023-11-29 03:11:44,669 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 03:11:44" (1/1) ... [2023-11-29 03:11:44,692 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 03:11:44,855 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 03:11:44,864 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 03:11:44,891 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 03:11:44,899 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 03:11:44,899 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 03:11:44,905 INFO L206 MainTranslator]: Completed translation [2023-11-29 03:11:44,906 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:11:44 WrapperNode [2023-11-29 03:11:44,906 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 03:11:44,907 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 03:11:44,907 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 03:11:44,907 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 03:11:44,913 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:11:44" (1/1) ... [2023-11-29 03:11:44,922 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:11:44" (1/1) ... [2023-11-29 03:11:44,958 INFO L138 Inliner]: procedures = 26, calls = 56, calls flagged for inlining = 17, calls inlined = 23, statements flattened = 350 [2023-11-29 03:11:44,958 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 03:11:44,959 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 03:11:44,959 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 03:11:44,959 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 03:11:44,972 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:11:44" (1/1) ... [2023-11-29 03:11:44,972 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:11:44" (1/1) ... [2023-11-29 03:11:44,977 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:11:44" (1/1) ... [2023-11-29 03:11:44,997 INFO L175 MemorySlicer]: Split 19 memory accesses to 5 slices as follows [2, 2, 2, 2, 11]. 58 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 5 writes are split as follows [0, 1, 1, 1, 2]. [2023-11-29 03:11:44,997 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:11:44" (1/1) ... [2023-11-29 03:11:44,997 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:11:44" (1/1) ... [2023-11-29 03:11:45,010 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:11:44" (1/1) ... [2023-11-29 03:11:45,016 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:11:44" (1/1) ... [2023-11-29 03:11:45,019 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:11:44" (1/1) ... [2023-11-29 03:11:45,022 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:11:44" (1/1) ... [2023-11-29 03:11:45,027 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 03:11:45,028 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 03:11:45,028 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 03:11:45,028 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 03:11:45,029 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:11:44" (1/1) ... [2023-11-29 03:11:45,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 03:11:45,046 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e2d9b7-1a58-4f05-921e-7fb4fb5ad9f0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:11:45,058 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e2d9b7-1a58-4f05-921e-7fb4fb5ad9f0/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 03:11:45,061 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e2d9b7-1a58-4f05-921e-7fb4fb5ad9f0/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 03:11:45,087 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 03:11:45,087 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 03:11:45,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 03:11:45,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-29 03:11:45,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-29 03:11:45,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-29 03:11:45,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-29 03:11:45,088 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-29 03:11:45,088 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-29 03:11:45,088 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-29 03:11:45,088 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-29 03:11:45,088 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-29 03:11:45,088 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-29 03:11:45,089 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-29 03:11:45,089 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-29 03:11:45,089 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-29 03:11:45,089 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-29 03:11:45,089 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-29 03:11:45,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 03:11:45,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 03:11:45,090 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 03:11:45,090 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-29 03:11:45,090 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-29 03:11:45,090 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-29 03:11:45,090 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-29 03:11:45,090 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-29 03:11:45,090 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 03:11:45,090 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 03:11:45,091 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 03:11:45,092 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-29 03:11:45,217 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 03:11:45,219 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 03:11:45,688 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 03:11:46,189 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 03:11:46,189 INFO L309 CfgBuilder]: Removed 8 assume(true) statements. [2023-11-29 03:11:46,190 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 03:11:46 BoogieIcfgContainer [2023-11-29 03:11:46,190 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 03:11:46,192 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 03:11:46,192 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 03:11:46,194 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 03:11:46,195 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 03:11:44" (1/3) ... [2023-11-29 03:11:46,195 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f902a3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 03:11:46, skipping insertion in model container [2023-11-29 03:11:46,195 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:11:44" (2/3) ... [2023-11-29 03:11:46,196 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f902a3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 03:11:46, skipping insertion in model container [2023-11-29 03:11:46,196 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 03:11:46" (3/3) ... [2023-11-29 03:11:46,197 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-dot-product.wvr.c [2023-11-29 03:11:46,204 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-29 03:11:46,213 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 03:11:46,213 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 34 error locations. [2023-11-29 03:11:46,213 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 03:11:46,335 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-29 03:11:46,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 99 places, 100 transitions, 221 flow [2023-11-29 03:11:46,405 INFO L124 PetriNetUnfolderBase]: 11/97 cut-off events. [2023-11-29 03:11:46,405 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-29 03:11:46,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110 conditions, 97 events. 11/97 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 381 event pairs, 0 based on Foata normal form. 0/52 useless extension candidates. Maximal degree in co-relation 81. Up to 2 conditions per place. [2023-11-29 03:11:46,411 INFO L82 GeneralOperation]: Start removeDead. Operand has 99 places, 100 transitions, 221 flow [2023-11-29 03:11:46,416 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 94 places, 95 transitions, 205 flow [2023-11-29 03:11:46,426 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 03:11:46,432 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;@1927be43, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 03:11:46,432 INFO L358 AbstractCegarLoop]: Starting to check reachability of 67 error locations. [2023-11-29 03:11:46,435 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 03:11:46,435 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2023-11-29 03:11:46,436 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 03:11:46,436 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:11:46,436 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-29 03:11:46,437 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2023-11-29 03:11:46,441 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:11:46,441 INFO L85 PathProgramCache]: Analyzing trace with hash 1113319, now seen corresponding path program 1 times [2023-11-29 03:11:46,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:11:46,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718368536] [2023-11-29 03:11:46,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:11:46,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:11:46,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:11:46,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:11:46,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:11:46,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718368536] [2023-11-29 03:11:46,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718368536] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:11:46,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:11:46,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 03:11:46,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269782648] [2023-11-29 03:11:46,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:11:46,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:11:46,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:11:46,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:11:46,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 03:11:46,791 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 100 [2023-11-29 03:11:46,794 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 95 transitions, 205 flow. Second operand has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 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) [2023-11-29 03:11:46,794 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:11:46,795 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 100 [2023-11-29 03:11:46,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:11:49,592 INFO L124 PetriNetUnfolderBase]: 10809/18697 cut-off events. [2023-11-29 03:11:49,593 INFO L125 PetriNetUnfolderBase]: For 593/593 co-relation queries the response was YES. [2023-11-29 03:11:49,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34074 conditions, 18697 events. 10809/18697 cut-off events. For 593/593 co-relation queries the response was YES. Maximal size of possible extension queue 1199. Compared 154230 event pairs, 8877 based on Foata normal form. 966/12546 useless extension candidates. Maximal degree in co-relation 31779. Up to 14898 conditions per place. [2023-11-29 03:11:49,770 INFO L140 encePairwiseOnDemand]: 80/100 looper letters, 59 selfloop transitions, 7 changer transitions 0/92 dead transitions. [2023-11-29 03:11:49,770 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 92 transitions, 331 flow [2023-11-29 03:11:49,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 03:11:49,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 03:11:49,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 195 transitions. [2023-11-29 03:11:49,784 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4875 [2023-11-29 03:11:49,785 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 195 transitions. [2023-11-29 03:11:49,785 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 195 transitions. [2023-11-29 03:11:49,786 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:11:49,789 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 195 transitions. [2023-11-29 03:11:49,792 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 48.75) internal successors, (195), 4 states have internal predecessors, (195), 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) [2023-11-29 03:11:49,797 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:11:49,797 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:11:49,799 INFO L175 Difference]: Start difference. First operand has 94 places, 95 transitions, 205 flow. Second operand 4 states and 195 transitions. [2023-11-29 03:11:49,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 92 transitions, 331 flow [2023-11-29 03:11:49,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 92 transitions, 322 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-29 03:11:49,814 INFO L231 Difference]: Finished difference. Result has 89 places, 92 transitions, 238 flow [2023-11-29 03:11:49,816 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=238, PETRI_PLACES=89, PETRI_TRANSITIONS=92} [2023-11-29 03:11:49,820 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, -5 predicate places. [2023-11-29 03:11:49,820 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 92 transitions, 238 flow [2023-11-29 03:11:49,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 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) [2023-11-29 03:11:49,821 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:11:49,821 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-29 03:11:49,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 03:11:49,821 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2023-11-29 03:11:49,822 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:11:49,822 INFO L85 PathProgramCache]: Analyzing trace with hash -1191768511, now seen corresponding path program 1 times [2023-11-29 03:11:49,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:11:49,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141003431] [2023-11-29 03:11:49,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:11:49,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:11:49,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:11:49,949 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:11:49,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:11:49,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141003431] [2023-11-29 03:11:49,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141003431] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:11:49,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [158202678] [2023-11-29 03:11:49,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:11:49,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:11:49,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e2d9b7-1a58-4f05-921e-7fb4fb5ad9f0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:11:49,951 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e2d9b7-1a58-4f05-921e-7fb4fb5ad9f0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:11:49,961 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e2d9b7-1a58-4f05-921e-7fb4fb5ad9f0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 03:11:50,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:11:50,091 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 03:11:50,095 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:11:50,142 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:11:50,142 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:11:50,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [158202678] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:11:50,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 03:11:50,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-11-29 03:11:50,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600307827] [2023-11-29 03:11:50,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:11:50,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 03:11:50,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:11:50,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 03:11:50,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-29 03:11:50,161 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 100 [2023-11-29 03:11:50,162 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 92 transitions, 238 flow. Second operand has 6 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) [2023-11-29 03:11:50,162 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:11:50,162 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 100 [2023-11-29 03:11:50,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:11:52,556 INFO L124 PetriNetUnfolderBase]: 10809/18695 cut-off events. [2023-11-29 03:11:52,557 INFO L125 PetriNetUnfolderBase]: For 153/153 co-relation queries the response was YES. [2023-11-29 03:11:52,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33923 conditions, 18695 events. 10809/18695 cut-off events. For 153/153 co-relation queries the response was YES. Maximal size of possible extension queue 1199. Compared 154334 event pairs, 8877 based on Foata normal form. 2/11583 useless extension candidates. Maximal degree in co-relation 33873. Up to 14888 conditions per place. [2023-11-29 03:11:52,653 INFO L140 encePairwiseOnDemand]: 91/100 looper letters, 52 selfloop transitions, 12 changer transitions 0/90 dead transitions. [2023-11-29 03:11:52,653 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 90 transitions, 358 flow [2023-11-29 03:11:52,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 03:11:52,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 03:11:52,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 240 transitions. [2023-11-29 03:11:52,657 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2023-11-29 03:11:52,657 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 240 transitions. [2023-11-29 03:11:52,657 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 240 transitions. [2023-11-29 03:11:52,658 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:11:52,658 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 240 transitions. [2023-11-29 03:11:52,660 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 40.0) internal successors, (240), 6 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) [2023-11-29 03:11:52,663 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 100.0) internal successors, (700), 7 states have internal predecessors, (700), 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) [2023-11-29 03:11:52,663 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 100.0) internal successors, (700), 7 states have internal predecessors, (700), 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) [2023-11-29 03:11:52,664 INFO L175 Difference]: Start difference. First operand has 89 places, 92 transitions, 238 flow. Second operand 6 states and 240 transitions. [2023-11-29 03:11:52,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 90 transitions, 358 flow [2023-11-29 03:11:52,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 90 transitions, 358 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 03:11:52,668 INFO L231 Difference]: Finished difference. Result has 92 places, 90 transitions, 254 flow [2023-11-29 03:11:52,668 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=254, PETRI_PLACES=92, PETRI_TRANSITIONS=90} [2023-11-29 03:11:52,669 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, -2 predicate places. [2023-11-29 03:11:52,669 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 90 transitions, 254 flow [2023-11-29 03:11:52,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 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) [2023-11-29 03:11:52,670 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:11:52,670 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2023-11-29 03:11:52,676 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e2d9b7-1a58-4f05-921e-7fb4fb5ad9f0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 03:11:52,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e2d9b7-1a58-4f05-921e-7fb4fb5ad9f0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:11:52,871 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2023-11-29 03:11:52,871 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:11:52,872 INFO L85 PathProgramCache]: Analyzing trace with hash 1709882913, now seen corresponding path program 1 times [2023-11-29 03:11:52,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:11:52,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251960278] [2023-11-29 03:11:52,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:11:52,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:11:52,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:11:52,957 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:11:52,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:11:52,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251960278] [2023-11-29 03:11:52,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251960278] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:11:52,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1033242368] [2023-11-29 03:11:52,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:11:52,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:11:52,958 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e2d9b7-1a58-4f05-921e-7fb4fb5ad9f0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:11:52,959 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e2d9b7-1a58-4f05-921e-7fb4fb5ad9f0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:11:52,964 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e2d9b7-1a58-4f05-921e-7fb4fb5ad9f0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 03:11:53,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:11:53,079 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 03:11:53,080 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:11:53,105 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:11:53,105 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:11:53,143 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:11:53,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1033242368] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:11:53,144 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:11:53,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2023-11-29 03:11:53,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103381467] [2023-11-29 03:11:53,144 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:11:53,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 03:11:53,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:11:53,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 03:11:53,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-11-29 03:11:53,182 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 100 [2023-11-29 03:11:53,183 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 90 transitions, 254 flow. Second operand has 12 states, 12 states have (on average 30.083333333333332) internal successors, (361), 12 states have internal predecessors, (361), 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) [2023-11-29 03:11:53,183 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:11:53,183 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 100 [2023-11-29 03:11:53,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:11:55,391 INFO L124 PetriNetUnfolderBase]: 10815/18719 cut-off events. [2023-11-29 03:11:55,391 INFO L125 PetriNetUnfolderBase]: For 195/195 co-relation queries the response was YES. [2023-11-29 03:11:55,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34017 conditions, 18719 events. 10815/18719 cut-off events. For 195/195 co-relation queries the response was YES. Maximal size of possible extension queue 1199. Compared 154615 event pairs, 8877 based on Foata normal form. 6/11610 useless extension candidates. Maximal degree in co-relation 33875. Up to 14899 conditions per place. [2023-11-29 03:11:55,497 INFO L140 encePairwiseOnDemand]: 91/100 looper letters, 57 selfloop transitions, 25 changer transitions 0/108 dead transitions. [2023-11-29 03:11:55,497 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 108 transitions, 532 flow [2023-11-29 03:11:55,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 03:11:55,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 03:11:55,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 378 transitions. [2023-11-29 03:11:55,500 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.378 [2023-11-29 03:11:55,501 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 378 transitions. [2023-11-29 03:11:55,501 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 378 transitions. [2023-11-29 03:11:55,501 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:11:55,502 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 378 transitions. [2023-11-29 03:11:55,504 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 37.8) internal successors, (378), 10 states have internal predecessors, (378), 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) [2023-11-29 03:11:55,508 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 100.0) internal successors, (1100), 11 states have internal predecessors, (1100), 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) [2023-11-29 03:11:55,509 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 100.0) internal successors, (1100), 11 states have internal predecessors, (1100), 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) [2023-11-29 03:11:55,509 INFO L175 Difference]: Start difference. First operand has 92 places, 90 transitions, 254 flow. Second operand 10 states and 378 transitions. [2023-11-29 03:11:55,509 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 108 transitions, 532 flow [2023-11-29 03:11:55,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 108 transitions, 474 flow, removed 12 selfloop flow, removed 5 redundant places. [2023-11-29 03:11:55,516 INFO L231 Difference]: Finished difference. Result has 99 places, 108 transitions, 394 flow [2023-11-29 03:11:55,516 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=394, PETRI_PLACES=99, PETRI_TRANSITIONS=108} [2023-11-29 03:11:55,517 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, 5 predicate places. [2023-11-29 03:11:55,517 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 108 transitions, 394 flow [2023-11-29 03:11:55,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 30.083333333333332) internal successors, (361), 12 states have internal predecessors, (361), 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) [2023-11-29 03:11:55,518 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:11:55,518 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:11:55,524 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e2d9b7-1a58-4f05-921e-7fb4fb5ad9f0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 03:11:55,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e2d9b7-1a58-4f05-921e-7fb4fb5ad9f0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:11:55,719 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2023-11-29 03:11:55,720 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:11:55,720 INFO L85 PathProgramCache]: Analyzing trace with hash -374854402, now seen corresponding path program 1 times [2023-11-29 03:11:55,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:11:55,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157434025] [2023-11-29 03:11:55,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:11:55,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:11:55,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:11:55,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:11:55,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:11:55,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157434025] [2023-11-29 03:11:55,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157434025] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:11:55,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:11:55,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 03:11:55,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230161559] [2023-11-29 03:11:55,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:11:55,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:11:55,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:11:55,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:11:55,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 03:11:55,835 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 100 [2023-11-29 03:11:55,835 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 108 transitions, 394 flow. Second operand has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:11:55,835 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:11:55,836 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 100 [2023-11-29 03:11:55,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:11:57,649 INFO L124 PetriNetUnfolderBase]: 10815/18735 cut-off events. [2023-11-29 03:11:57,649 INFO L125 PetriNetUnfolderBase]: For 256/256 co-relation queries the response was YES. [2023-11-29 03:11:57,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34086 conditions, 18735 events. 10815/18735 cut-off events. For 256/256 co-relation queries the response was YES. Maximal size of possible extension queue 1199. Compared 154713 event pairs, 8877 based on Foata normal form. 4/11626 useless extension candidates. Maximal degree in co-relation 33993. Up to 14914 conditions per place. [2023-11-29 03:11:57,730 INFO L140 encePairwiseOnDemand]: 95/100 looper letters, 86 selfloop transitions, 4 changer transitions 0/118 dead transitions. [2023-11-29 03:11:57,730 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 118 transitions, 651 flow [2023-11-29 03:11:57,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 03:11:57,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 03:11:57,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 230 transitions. [2023-11-29 03:11:57,732 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46 [2023-11-29 03:11:57,732 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 230 transitions. [2023-11-29 03:11:57,733 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 230 transitions. [2023-11-29 03:11:57,733 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:11:57,733 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 230 transitions. [2023-11-29 03:11:57,734 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 46.0) internal successors, (230), 5 states have internal predecessors, (230), 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) [2023-11-29 03:11:57,736 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 100.0) internal successors, (600), 6 states have internal predecessors, (600), 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) [2023-11-29 03:11:57,736 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 100.0) internal successors, (600), 6 states have internal predecessors, (600), 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) [2023-11-29 03:11:57,736 INFO L175 Difference]: Start difference. First operand has 99 places, 108 transitions, 394 flow. Second operand 5 states and 230 transitions. [2023-11-29 03:11:57,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 118 transitions, 651 flow [2023-11-29 03:11:57,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 118 transitions, 618 flow, removed 9 selfloop flow, removed 2 redundant places. [2023-11-29 03:11:57,742 INFO L231 Difference]: Finished difference. Result has 103 places, 109 transitions, 400 flow [2023-11-29 03:11:57,742 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=370, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=400, PETRI_PLACES=103, PETRI_TRANSITIONS=109} [2023-11-29 03:11:57,743 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, 9 predicate places. [2023-11-29 03:11:57,743 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 109 transitions, 400 flow [2023-11-29 03:11:57,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:11:57,744 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:11:57,744 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:11:57,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 03:11:57,744 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2023-11-29 03:11:57,744 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:11:57,744 INFO L85 PathProgramCache]: Analyzing trace with hash -1058123048, now seen corresponding path program 1 times [2023-11-29 03:11:57,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:11:57,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417543465] [2023-11-29 03:11:57,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:11:57,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:11:57,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:11:57,883 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 03:11:57,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:11:57,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417543465] [2023-11-29 03:11:57,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417543465] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:11:57,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:11:57,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 03:11:57,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717872408] [2023-11-29 03:11:57,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:11:57,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 03:11:57,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:11:57,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 03:11:57,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 03:11:57,903 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 100 [2023-11-29 03:11:57,904 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 109 transitions, 400 flow. Second operand has 6 states, 6 states have (on average 33.833333333333336) internal successors, (203), 6 states have internal predecessors, (203), 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) [2023-11-29 03:11:57,904 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:11:57,904 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 100 [2023-11-29 03:11:57,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:12:00,750 INFO L124 PetriNetUnfolderBase]: 18025/30343 cut-off events. [2023-11-29 03:12:00,750 INFO L125 PetriNetUnfolderBase]: For 374/374 co-relation queries the response was YES. [2023-11-29 03:12:00,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55927 conditions, 30343 events. 18025/30343 cut-off events. For 374/374 co-relation queries the response was YES. Maximal size of possible extension queue 1517. Compared 252838 event pairs, 12714 based on Foata normal form. 0/19735 useless extension candidates. Maximal degree in co-relation 55842. Up to 16053 conditions per place. [2023-11-29 03:12:00,934 INFO L140 encePairwiseOnDemand]: 92/100 looper letters, 175 selfloop transitions, 12 changer transitions 0/214 dead transitions. [2023-11-29 03:12:00,934 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 214 transitions, 996 flow [2023-11-29 03:12:00,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 03:12:00,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 03:12:00,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 358 transitions. [2023-11-29 03:12:00,937 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5966666666666667 [2023-11-29 03:12:00,937 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 358 transitions. [2023-11-29 03:12:00,937 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 358 transitions. [2023-11-29 03:12:00,937 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:12:00,937 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 358 transitions. [2023-11-29 03:12:00,939 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 59.666666666666664) internal successors, (358), 6 states have internal predecessors, (358), 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) [2023-11-29 03:12:00,941 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 100.0) internal successors, (700), 7 states have internal predecessors, (700), 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) [2023-11-29 03:12:00,942 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 100.0) internal successors, (700), 7 states have internal predecessors, (700), 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) [2023-11-29 03:12:00,942 INFO L175 Difference]: Start difference. First operand has 103 places, 109 transitions, 400 flow. Second operand 6 states and 358 transitions. [2023-11-29 03:12:00,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 214 transitions, 996 flow [2023-11-29 03:12:00,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 214 transitions, 992 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-29 03:12:00,950 INFO L231 Difference]: Finished difference. Result has 110 places, 113 transitions, 447 flow [2023-11-29 03:12:00,950 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=396, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=447, PETRI_PLACES=110, PETRI_TRANSITIONS=113} [2023-11-29 03:12:00,951 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, 16 predicate places. [2023-11-29 03:12:00,951 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 113 transitions, 447 flow [2023-11-29 03:12:00,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 33.833333333333336) internal successors, (203), 6 states have internal predecessors, (203), 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) [2023-11-29 03:12:00,952 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:12:00,952 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:12:00,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 03:12:00,952 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2023-11-29 03:12:00,953 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:12:00,953 INFO L85 PathProgramCache]: Analyzing trace with hash 1557923868, now seen corresponding path program 1 times [2023-11-29 03:12:00,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:12:00,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164705659] [2023-11-29 03:12:00,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:12:00,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:12:00,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:12:01,023 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 03:12:01,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:12:01,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164705659] [2023-11-29 03:12:01,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164705659] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:12:01,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:12:01,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 03:12:01,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849292968] [2023-11-29 03:12:01,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:12:01,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:12:01,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:12:01,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:12:01,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 03:12:01,034 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 100 [2023-11-29 03:12:01,034 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 113 transitions, 447 flow. Second operand has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 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) [2023-11-29 03:12:01,034 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:12:01,034 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 100 [2023-11-29 03:12:01,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:12:06,192 INFO L124 PetriNetUnfolderBase]: 32087/52607 cut-off events. [2023-11-29 03:12:06,192 INFO L125 PetriNetUnfolderBase]: For 6047/6463 co-relation queries the response was YES. [2023-11-29 03:12:06,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104746 conditions, 52607 events. 32087/52607 cut-off events. For 6047/6463 co-relation queries the response was YES. Maximal size of possible extension queue 2010. Compared 441877 event pairs, 17458 based on Foata normal form. 1044/36301 useless extension candidates. Maximal degree in co-relation 104649. Up to 27858 conditions per place. [2023-11-29 03:12:06,657 INFO L140 encePairwiseOnDemand]: 94/100 looper letters, 158 selfloop transitions, 5 changer transitions 0/190 dead transitions. [2023-11-29 03:12:06,657 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 190 transitions, 953 flow [2023-11-29 03:12:06,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 03:12:06,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 03:12:06,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 258 transitions. [2023-11-29 03:12:06,659 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.645 [2023-11-29 03:12:06,659 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 258 transitions. [2023-11-29 03:12:06,659 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 258 transitions. [2023-11-29 03:12:06,660 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:12:06,660 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 258 transitions. [2023-11-29 03:12:06,660 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 64.5) internal successors, (258), 4 states have internal predecessors, (258), 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) [2023-11-29 03:12:06,661 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:12:06,661 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:12:06,661 INFO L175 Difference]: Start difference. First operand has 110 places, 113 transitions, 447 flow. Second operand 4 states and 258 transitions. [2023-11-29 03:12:06,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 190 transitions, 953 flow [2023-11-29 03:12:06,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 190 transitions, 937 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 03:12:06,698 INFO L231 Difference]: Finished difference. Result has 113 places, 117 transitions, 474 flow [2023-11-29 03:12:06,699 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=431, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=474, PETRI_PLACES=113, PETRI_TRANSITIONS=117} [2023-11-29 03:12:06,699 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, 19 predicate places. [2023-11-29 03:12:06,699 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 117 transitions, 474 flow [2023-11-29 03:12:06,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 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) [2023-11-29 03:12:06,700 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:12:06,700 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:12:06,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 03:12:06,700 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2023-11-29 03:12:06,701 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:12:06,701 INFO L85 PathProgramCache]: Analyzing trace with hash 13189867, now seen corresponding path program 1 times [2023-11-29 03:12:06,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:12:06,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934651028] [2023-11-29 03:12:06,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:12:06,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:12:06,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:12:06,835 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:12:06,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:12:06,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934651028] [2023-11-29 03:12:06,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934651028] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:12:06,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [91489898] [2023-11-29 03:12:06,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:12:06,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:12:06,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e2d9b7-1a58-4f05-921e-7fb4fb5ad9f0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:12:06,837 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e2d9b7-1a58-4f05-921e-7fb4fb5ad9f0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:12:06,840 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e2d9b7-1a58-4f05-921e-7fb4fb5ad9f0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 03:12:06,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:12:06,957 INFO L262 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 03:12:06,959 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:12:07,048 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:12:07,048 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:12:07,142 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:12:07,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [91489898] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:12:07,143 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:12:07,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2023-11-29 03:12:07,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007317466] [2023-11-29 03:12:07,143 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:12:07,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-29 03:12:07,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:12:07,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-29 03:12:07,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2023-11-29 03:12:07,201 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 100 [2023-11-29 03:12:07,202 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 117 transitions, 474 flow. Second operand has 17 states, 17 states have (on average 30.647058823529413) internal successors, (521), 17 states have internal predecessors, (521), 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) [2023-11-29 03:12:07,202 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:12:07,202 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 100 [2023-11-29 03:12:07,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:12:13,755 INFO L124 PetriNetUnfolderBase]: 35004/60812 cut-off events. [2023-11-29 03:12:13,755 INFO L125 PetriNetUnfolderBase]: For 20796/21536 co-relation queries the response was YES. [2023-11-29 03:12:13,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128021 conditions, 60812 events. 35004/60812 cut-off events. For 20796/21536 co-relation queries the response was YES. Maximal size of possible extension queue 2340. Compared 563804 event pairs, 26788 based on Foata normal form. 740/42610 useless extension candidates. Maximal degree in co-relation 127890. Up to 39488 conditions per place. [2023-11-29 03:12:14,146 INFO L140 encePairwiseOnDemand]: 90/100 looper letters, 151 selfloop transitions, 41 changer transitions 0/219 dead transitions. [2023-11-29 03:12:14,147 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 219 transitions, 1271 flow [2023-11-29 03:12:14,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 03:12:14,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-29 03:12:14,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 521 transitions. [2023-11-29 03:12:14,150 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40076923076923077 [2023-11-29 03:12:14,150 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 521 transitions. [2023-11-29 03:12:14,150 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 521 transitions. [2023-11-29 03:12:14,150 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:12:14,150 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 521 transitions. [2023-11-29 03:12:14,152 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 40.07692307692308) internal successors, (521), 13 states have internal predecessors, (521), 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) [2023-11-29 03:12:14,154 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 100.0) internal successors, (1400), 14 states have internal predecessors, (1400), 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) [2023-11-29 03:12:14,155 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 100.0) internal successors, (1400), 14 states have internal predecessors, (1400), 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) [2023-11-29 03:12:14,155 INFO L175 Difference]: Start difference. First operand has 113 places, 117 transitions, 474 flow. Second operand 13 states and 521 transitions. [2023-11-29 03:12:14,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 219 transitions, 1271 flow [2023-11-29 03:12:14,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 219 transitions, 1262 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 03:12:14,184 INFO L231 Difference]: Finished difference. Result has 128 places, 137 transitions, 737 flow [2023-11-29 03:12:14,184 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=471, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=737, PETRI_PLACES=128, PETRI_TRANSITIONS=137} [2023-11-29 03:12:14,185 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, 34 predicate places. [2023-11-29 03:12:14,185 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 137 transitions, 737 flow [2023-11-29 03:12:14,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 30.647058823529413) internal successors, (521), 17 states have internal predecessors, (521), 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) [2023-11-29 03:12:14,186 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:12:14,186 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:12:14,190 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e2d9b7-1a58-4f05-921e-7fb4fb5ad9f0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 03:12:14,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e2d9b7-1a58-4f05-921e-7fb4fb5ad9f0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:12:14,387 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2023-11-29 03:12:14,387 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:12:14,387 INFO L85 PathProgramCache]: Analyzing trace with hash -889472509, now seen corresponding path program 1 times [2023-11-29 03:12:14,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:12:14,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975789690] [2023-11-29 03:12:14,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:12:14,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:12:14,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:12:14,570 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 03:12:14,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:12:14,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975789690] [2023-11-29 03:12:14,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975789690] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:12:14,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1228436516] [2023-11-29 03:12:14,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:12:14,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:12:14,571 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e2d9b7-1a58-4f05-921e-7fb4fb5ad9f0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:12:14,572 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e2d9b7-1a58-4f05-921e-7fb4fb5ad9f0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:12:14,574 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e2d9b7-1a58-4f05-921e-7fb4fb5ad9f0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 03:12:14,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:12:14,688 INFO L262 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 03:12:14,689 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:12:14,786 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2023-11-29 03:12:14,801 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 03:12:14,801 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:12:14,835 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 9 [2023-11-29 03:12:14,915 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 03:12:14,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1228436516] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:12:14,915 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:12:14,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2023-11-29 03:12:14,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284401888] [2023-11-29 03:12:14,916 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:12:14,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-29 03:12:14,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:12:14,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-29 03:12:14,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2023-11-29 03:12:15,025 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 100 [2023-11-29 03:12:15,026 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 137 transitions, 737 flow. Second operand has 18 states, 18 states have (on average 29.5) internal successors, (531), 18 states have internal predecessors, (531), 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) [2023-11-29 03:12:15,026 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:12:15,026 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 100 [2023-11-29 03:12:15,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:12:24,382 INFO L124 PetriNetUnfolderBase]: 52104/86218 cut-off events. [2023-11-29 03:12:24,382 INFO L125 PetriNetUnfolderBase]: For 28964/30450 co-relation queries the response was YES. [2023-11-29 03:12:24,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 193211 conditions, 86218 events. 52104/86218 cut-off events. For 28964/30450 co-relation queries the response was YES. Maximal size of possible extension queue 2629. Compared 767060 event pairs, 32634 based on Foata normal form. 0/60884 useless extension candidates. Maximal degree in co-relation 193049. Up to 35731 conditions per place. [2023-11-29 03:12:25,076 INFO L140 encePairwiseOnDemand]: 89/100 looper letters, 176 selfloop transitions, 50 changer transitions 0/251 dead transitions. [2023-11-29 03:12:25,076 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 251 transitions, 1497 flow [2023-11-29 03:12:25,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 03:12:25,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-29 03:12:25,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 423 transitions. [2023-11-29 03:12:25,079 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47 [2023-11-29 03:12:25,079 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 423 transitions. [2023-11-29 03:12:25,079 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 423 transitions. [2023-11-29 03:12:25,080 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:12:25,080 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 423 transitions. [2023-11-29 03:12:25,081 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 47.0) internal successors, (423), 9 states have internal predecessors, (423), 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) [2023-11-29 03:12:25,082 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 100.0) internal successors, (1000), 10 states have internal predecessors, (1000), 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) [2023-11-29 03:12:25,083 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 100.0) internal successors, (1000), 10 states have internal predecessors, (1000), 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) [2023-11-29 03:12:25,083 INFO L175 Difference]: Start difference. First operand has 128 places, 137 transitions, 737 flow. Second operand 9 states and 423 transitions. [2023-11-29 03:12:25,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 251 transitions, 1497 flow [2023-11-29 03:12:25,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 251 transitions, 1486 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-11-29 03:12:25,479 INFO L231 Difference]: Finished difference. Result has 137 places, 142 transitions, 888 flow [2023-11-29 03:12:25,479 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=726, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=888, PETRI_PLACES=137, PETRI_TRANSITIONS=142} [2023-11-29 03:12:25,480 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, 43 predicate places. [2023-11-29 03:12:25,480 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 142 transitions, 888 flow [2023-11-29 03:12:25,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 29.5) internal successors, (531), 18 states have internal predecessors, (531), 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) [2023-11-29 03:12:25,481 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:12:25,481 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2023-11-29 03:12:25,486 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e2d9b7-1a58-4f05-921e-7fb4fb5ad9f0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 03:12:25,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e2d9b7-1a58-4f05-921e-7fb4fb5ad9f0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:12:25,681 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2023-11-29 03:12:25,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:12:25,682 INFO L85 PathProgramCache]: Analyzing trace with hash 461295803, now seen corresponding path program 2 times [2023-11-29 03:12:25,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:12:25,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84220208] [2023-11-29 03:12:25,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:12:25,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:12:25,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:12:25,814 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:12:25,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:12:25,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84220208] [2023-11-29 03:12:25,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84220208] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:12:25,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [983610641] [2023-11-29 03:12:25,815 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 03:12:25,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:12:25,815 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e2d9b7-1a58-4f05-921e-7fb4fb5ad9f0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:12:25,816 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e2d9b7-1a58-4f05-921e-7fb4fb5ad9f0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:12:25,817 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e2d9b7-1a58-4f05-921e-7fb4fb5ad9f0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 03:12:25,917 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 03:12:25,918 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:12:25,919 INFO L262 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 03:12:25,920 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:12:25,963 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-29 03:12:25,963 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:12:26,000 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-29 03:12:26,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [983610641] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:12:26,001 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:12:26,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 12 [2023-11-29 03:12:26,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777816661] [2023-11-29 03:12:26,001 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:12:26,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 03:12:26,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:12:26,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 03:12:26,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2023-11-29 03:12:26,037 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 100 [2023-11-29 03:12:26,038 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 142 transitions, 888 flow. Second operand has 14 states, 14 states have (on average 30.142857142857142) internal successors, (422), 14 states have internal predecessors, (422), 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) [2023-11-29 03:12:26,038 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:12:26,038 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 100 [2023-11-29 03:12:26,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:12:34,510 INFO L124 PetriNetUnfolderBase]: 46143/80606 cut-off events. [2023-11-29 03:12:34,510 INFO L125 PetriNetUnfolderBase]: For 72577/74740 co-relation queries the response was YES. [2023-11-29 03:12:34,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 190646 conditions, 80606 events. 46143/80606 cut-off events. For 72577/74740 co-relation queries the response was YES. Maximal size of possible extension queue 2921. Compared 769935 event pairs, 37926 based on Foata normal form. 2168/59332 useless extension candidates. Maximal degree in co-relation 190393. Up to 63927 conditions per place. [2023-11-29 03:12:35,325 INFO L140 encePairwiseOnDemand]: 91/100 looper letters, 69 selfloop transitions, 53 changer transitions 0/150 dead transitions. [2023-11-29 03:12:35,325 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 150 transitions, 1220 flow [2023-11-29 03:12:35,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-29 03:12:35,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-11-29 03:12:35,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 786 transitions. [2023-11-29 03:12:35,329 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3275 [2023-11-29 03:12:35,329 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 786 transitions. [2023-11-29 03:12:35,329 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 786 transitions. [2023-11-29 03:12:35,330 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:12:35,330 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 786 transitions. [2023-11-29 03:12:35,332 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 32.75) internal successors, (786), 24 states have internal predecessors, (786), 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) [2023-11-29 03:12:35,335 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 100.0) internal successors, (2500), 25 states have internal predecessors, (2500), 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) [2023-11-29 03:12:35,336 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 100.0) internal successors, (2500), 25 states have internal predecessors, (2500), 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) [2023-11-29 03:12:35,336 INFO L175 Difference]: Start difference. First operand has 137 places, 142 transitions, 888 flow. Second operand 24 states and 786 transitions. [2023-11-29 03:12:35,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 150 transitions, 1220 flow [2023-11-29 03:12:35,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 150 transitions, 1177 flow, removed 6 selfloop flow, removed 3 redundant places. [2023-11-29 03:12:35,514 INFO L231 Difference]: Finished difference. Result has 158 places, 150 transitions, 1063 flow [2023-11-29 03:12:35,514 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=837, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1063, PETRI_PLACES=158, PETRI_TRANSITIONS=150} [2023-11-29 03:12:35,515 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, 64 predicate places. [2023-11-29 03:12:35,515 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 150 transitions, 1063 flow [2023-11-29 03:12:35,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 30.142857142857142) internal successors, (422), 14 states have internal predecessors, (422), 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) [2023-11-29 03:12:35,515 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:12:35,515 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:12:35,521 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e2d9b7-1a58-4f05-921e-7fb4fb5ad9f0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 03:12:35,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e2d9b7-1a58-4f05-921e-7fb4fb5ad9f0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-11-29 03:12:35,716 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2023-11-29 03:12:35,716 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:12:35,716 INFO L85 PathProgramCache]: Analyzing trace with hash -1980933179, now seen corresponding path program 1 times [2023-11-29 03:12:35,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:12:35,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945138268] [2023-11-29 03:12:35,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:12:35,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:12:35,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:12:35,853 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 03:12:35,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:12:35,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945138268] [2023-11-29 03:12:35,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945138268] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:12:35,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:12:35,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 03:12:35,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663967416] [2023-11-29 03:12:35,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:12:35,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 03:12:35,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:12:35,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 03:12:35,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 03:12:35,870 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 100 [2023-11-29 03:12:35,871 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 150 transitions, 1063 flow. Second operand has 6 states, 6 states have (on average 34.5) internal successors, (207), 6 states have internal predecessors, (207), 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) [2023-11-29 03:12:35,871 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:12:35,871 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 100 [2023-11-29 03:12:35,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:12:43,939 INFO L124 PetriNetUnfolderBase]: 44237/77134 cut-off events. [2023-11-29 03:12:43,939 INFO L125 PetriNetUnfolderBase]: For 59153/61031 co-relation queries the response was YES. [2023-11-29 03:12:44,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 176044 conditions, 77134 events. 44237/77134 cut-off events. For 59153/61031 co-relation queries the response was YES. Maximal size of possible extension queue 2675. Compared 726046 event pairs, 34338 based on Foata normal form. 1758/56909 useless extension candidates. Maximal degree in co-relation 175877. Up to 52149 conditions per place. [2023-11-29 03:12:44,582 INFO L140 encePairwiseOnDemand]: 92/100 looper letters, 202 selfloop transitions, 15 changer transitions 0/245 dead transitions. [2023-11-29 03:12:44,582 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 245 transitions, 1845 flow [2023-11-29 03:12:44,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 03:12:44,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 03:12:44,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 337 transitions. [2023-11-29 03:12:44,585 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5616666666666666 [2023-11-29 03:12:44,585 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 337 transitions. [2023-11-29 03:12:44,585 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 337 transitions. [2023-11-29 03:12:44,586 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:12:44,586 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 337 transitions. [2023-11-29 03:12:44,587 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 56.166666666666664) internal successors, (337), 6 states have internal predecessors, (337), 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) [2023-11-29 03:12:44,588 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 100.0) internal successors, (700), 7 states have internal predecessors, (700), 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) [2023-11-29 03:12:44,588 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 100.0) internal successors, (700), 7 states have internal predecessors, (700), 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) [2023-11-29 03:12:44,588 INFO L175 Difference]: Start difference. First operand has 158 places, 150 transitions, 1063 flow. Second operand 6 states and 337 transitions. [2023-11-29 03:12:44,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 245 transitions, 1845 flow [2023-11-29 03:12:44,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 245 transitions, 1702 flow, removed 14 selfloop flow, removed 14 redundant places. [2023-11-29 03:12:44,689 INFO L231 Difference]: Finished difference. Result has 152 places, 154 transitions, 978 flow [2023-11-29 03:12:44,689 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=920, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=978, PETRI_PLACES=152, PETRI_TRANSITIONS=154} [2023-11-29 03:12:44,690 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, 58 predicate places. [2023-11-29 03:12:44,690 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 154 transitions, 978 flow [2023-11-29 03:12:44,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 34.5) internal successors, (207), 6 states have internal predecessors, (207), 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) [2023-11-29 03:12:44,690 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:12:44,691 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:12:44,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-29 03:12:44,691 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2023-11-29 03:12:44,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:12:44,691 INFO L85 PathProgramCache]: Analyzing trace with hash 1553118549, now seen corresponding path program 1 times [2023-11-29 03:12:44,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:12:44,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958326556] [2023-11-29 03:12:44,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:12:44,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:12:44,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:12:44,810 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 03:12:44,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:12:44,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958326556] [2023-11-29 03:12:44,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958326556] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:12:44,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:12:44,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 03:12:44,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019486526] [2023-11-29 03:12:44,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:12:44,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:12:44,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:12:44,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:12:44,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:12:44,813 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 100 [2023-11-29 03:12:44,813 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 154 transitions, 978 flow. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 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) [2023-11-29 03:12:44,814 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:12:44,814 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 100 [2023-11-29 03:12:44,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:12:56,908 INFO L124 PetriNetUnfolderBase]: 64349/109424 cut-off events. [2023-11-29 03:12:56,908 INFO L125 PetriNetUnfolderBase]: For 90396/94775 co-relation queries the response was YES. [2023-11-29 03:12:57,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 262108 conditions, 109424 events. 64349/109424 cut-off events. For 90396/94775 co-relation queries the response was YES. Maximal size of possible extension queue 3480. Compared 1036431 event pairs, 21998 based on Foata normal form. 2779/83533 useless extension candidates. Maximal degree in co-relation 261950. Up to 54147 conditions per place. [2023-11-29 03:12:57,920 INFO L140 encePairwiseOnDemand]: 93/100 looper letters, 177 selfloop transitions, 3 changer transitions 0/210 dead transitions. [2023-11-29 03:12:57,920 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 210 transitions, 1582 flow [2023-11-29 03:12:57,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:12:57,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 03:12:57,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 199 transitions. [2023-11-29 03:12:57,921 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6633333333333333 [2023-11-29 03:12:57,922 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 199 transitions. [2023-11-29 03:12:57,922 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 199 transitions. [2023-11-29 03:12:57,922 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:12:57,922 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 199 transitions. [2023-11-29 03:12:57,923 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 66.33333333333333) internal successors, (199), 3 states have internal predecessors, (199), 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) [2023-11-29 03:12:57,924 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 100.0) internal successors, (400), 4 states have internal predecessors, (400), 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) [2023-11-29 03:12:57,924 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 100.0) internal successors, (400), 4 states have internal predecessors, (400), 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) [2023-11-29 03:12:57,924 INFO L175 Difference]: Start difference. First operand has 152 places, 154 transitions, 978 flow. Second operand 3 states and 199 transitions. [2023-11-29 03:12:57,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 210 transitions, 1582 flow [2023-11-29 03:12:58,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 210 transitions, 1562 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 03:12:58,455 INFO L231 Difference]: Finished difference. Result has 153 places, 156 transitions, 983 flow [2023-11-29 03:12:58,455 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=958, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=983, PETRI_PLACES=153, PETRI_TRANSITIONS=156} [2023-11-29 03:12:58,456 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, 59 predicate places. [2023-11-29 03:12:58,456 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 156 transitions, 983 flow [2023-11-29 03:12:58,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 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) [2023-11-29 03:12:58,456 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:12:58,456 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:12:58,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-29 03:12:58,456 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2023-11-29 03:12:58,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:12:58,457 INFO L85 PathProgramCache]: Analyzing trace with hash 1553118545, now seen corresponding path program 2 times [2023-11-29 03:12:58,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:12:58,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015748689] [2023-11-29 03:12:58,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:12:58,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:12:58,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:12:58,589 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 03:12:58,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:12:58,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015748689] [2023-11-29 03:12:58,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015748689] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:12:58,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:12:58,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 03:12:58,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631589714] [2023-11-29 03:12:58,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:12:58,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 03:12:58,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:12:58,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 03:12:58,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 03:12:58,610 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 100 [2023-11-29 03:12:58,610 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 156 transitions, 983 flow. Second operand has 6 states, 6 states have (on average 34.166666666666664) internal successors, (205), 6 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) [2023-11-29 03:12:58,610 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:12:58,610 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 100 [2023-11-29 03:12:58,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:13:11,373 INFO L124 PetriNetUnfolderBase]: 63223/107246 cut-off events. [2023-11-29 03:13:11,373 INFO L125 PetriNetUnfolderBase]: For 79380/81608 co-relation queries the response was YES. [2023-11-29 03:13:12,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 262771 conditions, 107246 events. 63223/107246 cut-off events. For 79380/81608 co-relation queries the response was YES. Maximal size of possible extension queue 3287. Compared 1004479 event pairs, 50558 based on Foata normal form. 1936/84291 useless extension candidates. Maximal degree in co-relation 262612. Up to 82201 conditions per place. [2023-11-29 03:13:12,525 INFO L140 encePairwiseOnDemand]: 92/100 looper letters, 179 selfloop transitions, 15 changer transitions 0/223 dead transitions. [2023-11-29 03:13:12,525 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 223 transitions, 1661 flow [2023-11-29 03:13:12,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 03:13:12,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 03:13:12,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 316 transitions. [2023-11-29 03:13:12,527 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5266666666666666 [2023-11-29 03:13:12,527 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 316 transitions. [2023-11-29 03:13:12,527 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 316 transitions. [2023-11-29 03:13:12,527 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:13:12,527 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 316 transitions. [2023-11-29 03:13:12,528 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 52.666666666666664) internal successors, (316), 6 states have internal predecessors, (316), 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) [2023-11-29 03:13:12,529 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 100.0) internal successors, (700), 7 states have internal predecessors, (700), 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) [2023-11-29 03:13:12,529 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 100.0) internal successors, (700), 7 states have internal predecessors, (700), 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) [2023-11-29 03:13:12,530 INFO L175 Difference]: Start difference. First operand has 153 places, 156 transitions, 983 flow. Second operand 6 states and 316 transitions. [2023-11-29 03:13:12,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 223 transitions, 1661 flow [2023-11-29 03:13:12,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 223 transitions, 1658 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 03:13:12,845 INFO L231 Difference]: Finished difference. Result has 160 places, 160 transitions, 1040 flow [2023-11-29 03:13:12,845 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=980, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1040, PETRI_PLACES=160, PETRI_TRANSITIONS=160} [2023-11-29 03:13:12,845 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, 66 predicate places. [2023-11-29 03:13:12,846 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 160 transitions, 1040 flow [2023-11-29 03:13:12,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 34.166666666666664) internal successors, (205), 6 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) [2023-11-29 03:13:12,846 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:13:12,846 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:13:12,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-29 03:13:12,846 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread3Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2023-11-29 03:13:12,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:13:12,846 INFO L85 PathProgramCache]: Analyzing trace with hash -1279386369, now seen corresponding path program 1 times [2023-11-29 03:13:12,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:13:12,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254754973] [2023-11-29 03:13:12,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:13:12,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:13:12,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:13:12,911 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 03:13:12,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:13:12,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254754973] [2023-11-29 03:13:12,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254754973] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:13:12,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:13:12,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 03:13:12,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638676468] [2023-11-29 03:13:12,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:13:12,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 03:13:12,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:13:12,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 03:13:12,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 03:13:12,921 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 100 [2023-11-29 03:13:12,922 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 160 transitions, 1040 flow. Second operand has 5 states, 5 states have (on average 34.0) internal successors, (170), 5 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) [2023-11-29 03:13:12,922 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:13:12,922 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 100 [2023-11-29 03:13:12,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:13:25,111 INFO L124 PetriNetUnfolderBase]: 63995/100482 cut-off events. [2023-11-29 03:13:25,111 INFO L125 PetriNetUnfolderBase]: For 86112/90041 co-relation queries the response was YES. [2023-11-29 03:13:25,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 264055 conditions, 100482 events. 63995/100482 cut-off events. For 86112/90041 co-relation queries the response was YES. Maximal size of possible extension queue 2877. Compared 843849 event pairs, 11038 based on Foata normal form. 3957/82571 useless extension candidates. Maximal degree in co-relation 263893. Up to 56442 conditions per place. [2023-11-29 03:13:26,134 INFO L140 encePairwiseOnDemand]: 94/100 looper letters, 209 selfloop transitions, 17 changer transitions 0/255 dead transitions. [2023-11-29 03:13:26,134 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 255 transitions, 1962 flow [2023-11-29 03:13:26,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 03:13:26,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 03:13:26,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 275 transitions. [2023-11-29 03:13:26,136 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.55 [2023-11-29 03:13:26,136 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 275 transitions. [2023-11-29 03:13:26,136 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 275 transitions. [2023-11-29 03:13:26,137 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:13:26,137 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 275 transitions. [2023-11-29 03:13:26,138 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 55.0) internal successors, (275), 5 states have internal predecessors, (275), 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) [2023-11-29 03:13:26,139 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 100.0) internal successors, (600), 6 states have internal predecessors, (600), 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) [2023-11-29 03:13:26,140 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 100.0) internal successors, (600), 6 states have internal predecessors, (600), 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) [2023-11-29 03:13:26,140 INFO L175 Difference]: Start difference. First operand has 160 places, 160 transitions, 1040 flow. Second operand 5 states and 275 transitions. [2023-11-29 03:13:26,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 255 transitions, 1962 flow [2023-11-29 03:13:26,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 255 transitions, 1942 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 03:13:26,961 INFO L231 Difference]: Finished difference. Result has 161 places, 159 transitions, 1052 flow [2023-11-29 03:13:26,961 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=1018, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1052, PETRI_PLACES=161, PETRI_TRANSITIONS=159} [2023-11-29 03:13:26,962 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, 67 predicate places. [2023-11-29 03:13:26,962 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 159 transitions, 1052 flow [2023-11-29 03:13:26,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 34.0) internal successors, (170), 5 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) [2023-11-29 03:13:26,962 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:13:26,962 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:13:26,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-29 03:13:26,962 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2023-11-29 03:13:26,962 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:13:26,962 INFO L85 PathProgramCache]: Analyzing trace with hash 902034651, now seen corresponding path program 1 times [2023-11-29 03:13:26,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:13:26,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762158766] [2023-11-29 03:13:26,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:13:26,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:13:26,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:13:27,018 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 03:13:27,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:13:27,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762158766] [2023-11-29 03:13:27,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762158766] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:13:27,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:13:27,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 03:13:27,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462513625] [2023-11-29 03:13:27,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:13:27,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:13:27,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:13:27,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:13:27,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 03:13:27,029 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 100 [2023-11-29 03:13:27,029 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 159 transitions, 1052 flow. Second operand has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:13:27,029 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:13:27,029 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 100 [2023-11-29 03:13:27,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:13:47,302 INFO L124 PetriNetUnfolderBase]: 107713/166493 cut-off events. [2023-11-29 03:13:47,303 INFO L125 PetriNetUnfolderBase]: For 145876/151907 co-relation queries the response was YES. [2023-11-29 03:13:48,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 448210 conditions, 166493 events. 107713/166493 cut-off events. For 145876/151907 co-relation queries the response was YES. Maximal size of possible extension queue 4089. Compared 1425140 event pairs, 51762 based on Foata normal form. 4853/135962 useless extension candidates. Maximal degree in co-relation 448046. Up to 89646 conditions per place. [2023-11-29 03:13:49,176 INFO L140 encePairwiseOnDemand]: 94/100 looper letters, 232 selfloop transitions, 7 changer transitions 0/267 dead transitions. [2023-11-29 03:13:49,176 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 267 transitions, 2050 flow [2023-11-29 03:13:49,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 03:13:49,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 03:13:49,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 258 transitions. [2023-11-29 03:13:49,178 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.645 [2023-11-29 03:13:49,178 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 258 transitions. [2023-11-29 03:13:49,178 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 258 transitions. [2023-11-29 03:13:49,178 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:13:49,178 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 258 transitions. [2023-11-29 03:13:49,179 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 64.5) internal successors, (258), 4 states have internal predecessors, (258), 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) [2023-11-29 03:13:49,180 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:13:49,181 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:13:49,181 INFO L175 Difference]: Start difference. First operand has 161 places, 159 transitions, 1052 flow. Second operand 4 states and 258 transitions. [2023-11-29 03:13:49,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 267 transitions, 2050 flow [2023-11-29 03:13:51,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 267 transitions, 1996 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-29 03:13:51,332 INFO L231 Difference]: Finished difference. Result has 162 places, 163 transitions, 1069 flow [2023-11-29 03:13:51,332 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=1018, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1069, PETRI_PLACES=162, PETRI_TRANSITIONS=163} [2023-11-29 03:13:51,333 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, 68 predicate places. [2023-11-29 03:13:51,333 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 163 transitions, 1069 flow [2023-11-29 03:13:51,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:13:51,333 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:13:51,333 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:13:51,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-29 03:13:51,334 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2023-11-29 03:13:51,334 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:13:51,334 INFO L85 PathProgramCache]: Analyzing trace with hash -1733001480, now seen corresponding path program 2 times [2023-11-29 03:13:51,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:13:51,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618410633] [2023-11-29 03:13:51,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:13:51,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:13:51,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:13:51,728 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 03:13:51,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:13:51,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618410633] [2023-11-29 03:13:51,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618410633] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:13:51,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1249689788] [2023-11-29 03:13:51,729 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 03:13:51,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:13:51,729 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e2d9b7-1a58-4f05-921e-7fb4fb5ad9f0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:13:51,732 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e2d9b7-1a58-4f05-921e-7fb4fb5ad9f0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:13:51,737 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e2d9b7-1a58-4f05-921e-7fb4fb5ad9f0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 03:13:51,888 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 03:13:51,888 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:13:51,890 INFO L262 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-29 03:13:51,892 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:13:51,913 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-29 03:13:51,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:13:51,966 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2023-11-29 03:13:52,015 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 03:13:52,015 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:13:52,175 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 21 [2023-11-29 03:13:52,181 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 114 treesize of output 110 [2023-11-29 03:13:52,215 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 03:13:52,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1249689788] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:13:52,215 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:13:52,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2023-11-29 03:13:52,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625396885] [2023-11-29 03:13:52,216 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:13:52,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 03:13:52,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:13:52,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 03:13:52,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2023-11-29 03:13:52,400 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 100 [2023-11-29 03:13:52,401 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 163 transitions, 1069 flow. Second operand has 16 states, 16 states have (on average 30.75) internal successors, (492), 16 states have internal predecessors, (492), 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) [2023-11-29 03:13:52,401 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:13:52,401 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 100 [2023-11-29 03:13:52,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:14:21,500 INFO L124 PetriNetUnfolderBase]: 138157/223168 cut-off events. [2023-11-29 03:14:21,500 INFO L125 PetriNetUnfolderBase]: For 188591/195169 co-relation queries the response was YES. [2023-11-29 03:14:23,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 593101 conditions, 223168 events. 138157/223168 cut-off events. For 188591/195169 co-relation queries the response was YES. Maximal size of possible extension queue 5292. Compared 2125292 event pairs, 51850 based on Foata normal form. 922/172271 useless extension candidates. Maximal degree in co-relation 592934. Up to 86058 conditions per place. [2023-11-29 03:14:24,001 INFO L140 encePairwiseOnDemand]: 85/100 looper letters, 174 selfloop transitions, 70 changer transitions 0/273 dead transitions. [2023-11-29 03:14:24,002 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 273 transitions, 1996 flow [2023-11-29 03:14:24,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 03:14:24,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-29 03:14:24,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 423 transitions. [2023-11-29 03:14:24,004 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47 [2023-11-29 03:14:24,005 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 423 transitions. [2023-11-29 03:14:24,005 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 423 transitions. [2023-11-29 03:14:24,005 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:14:24,005 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 423 transitions. [2023-11-29 03:14:24,006 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 47.0) internal successors, (423), 9 states have internal predecessors, (423), 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) [2023-11-29 03:14:24,008 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 100.0) internal successors, (1000), 10 states have internal predecessors, (1000), 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) [2023-11-29 03:14:24,008 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 100.0) internal successors, (1000), 10 states have internal predecessors, (1000), 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) [2023-11-29 03:14:24,008 INFO L175 Difference]: Start difference. First operand has 162 places, 163 transitions, 1069 flow. Second operand 9 states and 423 transitions. [2023-11-29 03:14:24,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 273 transitions, 1996 flow [2023-11-29 03:14:30,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 273 transitions, 1976 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 03:14:30,834 INFO L231 Difference]: Finished difference. Result has 171 places, 170 transitions, 1271 flow [2023-11-29 03:14:30,834 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=1064, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1271, PETRI_PLACES=171, PETRI_TRANSITIONS=170} [2023-11-29 03:14:30,834 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, 77 predicate places. [2023-11-29 03:14:30,834 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 170 transitions, 1271 flow [2023-11-29 03:14:30,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 30.75) internal successors, (492), 16 states have internal predecessors, (492), 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) [2023-11-29 03:14:30,835 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:14:30,835 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:14:30,839 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e2d9b7-1a58-4f05-921e-7fb4fb5ad9f0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 03:14:31,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e2d9b7-1a58-4f05-921e-7fb4fb5ad9f0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-29 03:14:31,035 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2023-11-29 03:14:31,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:14:31,036 INFO L85 PathProgramCache]: Analyzing trace with hash -1733001479, now seen corresponding path program 1 times [2023-11-29 03:14:31,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:14:31,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236756710] [2023-11-29 03:14:31,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:14:31,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:14:31,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:14:31,311 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 03:14:31,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:14:31,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236756710] [2023-11-29 03:14:31,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236756710] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:14:31,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2139190165] [2023-11-29 03:14:31,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:14:31,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:14:31,312 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e2d9b7-1a58-4f05-921e-7fb4fb5ad9f0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:14:31,313 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e2d9b7-1a58-4f05-921e-7fb4fb5ad9f0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:14:31,313 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e2d9b7-1a58-4f05-921e-7fb4fb5ad9f0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 03:14:31,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:14:31,430 INFO L262 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-29 03:14:31,432 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:14:31,443 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-29 03:14:31,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:14:31,487 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2023-11-29 03:14:31,525 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 03:14:31,525 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:14:31,652 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 19 [2023-11-29 03:14:31,656 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 42 [2023-11-29 03:14:31,686 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 03:14:31,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2139190165] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:14:31,686 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:14:31,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2023-11-29 03:14:31,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972814101] [2023-11-29 03:14:31,686 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:14:31,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 03:14:31,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:14:31,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 03:14:31,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2023-11-29 03:14:31,902 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 100 [2023-11-29 03:14:31,903 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 170 transitions, 1271 flow. Second operand has 16 states, 16 states have (on average 30.75) internal successors, (492), 16 states have internal predecessors, (492), 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) [2023-11-29 03:14:31,903 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:14:31,903 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 100 [2023-11-29 03:14:31,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand