./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-more-buffer-mult2.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_c94535de-41d7-47ae-8a44-3cb94ccd9871/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c94535de-41d7-47ae-8a44-3cb94ccd9871/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_c94535de-41d7-47ae-8a44-3cb94ccd9871/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c94535de-41d7-47ae-8a44-3cb94ccd9871/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-buffer-mult2.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c94535de-41d7-47ae-8a44-3cb94ccd9871/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_c94535de-41d7-47ae-8a44-3cb94ccd9871/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 dbff9cba9b3794b18d55ca52c1abf6279404a7b220f91d79730a04b586f9ee44 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 03:55:46,356 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 03:55:46,431 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c94535de-41d7-47ae-8a44-3cb94ccd9871/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-29 03:55:46,435 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 03:55:46,436 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 03:55:46,467 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 03:55:46,467 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 03:55:46,468 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 03:55:46,469 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 03:55:46,469 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 03:55:46,470 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 03:55:46,470 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 03:55:46,471 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 03:55:46,471 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 03:55:46,472 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 03:55:46,472 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 03:55:46,473 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 03:55:46,473 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 03:55:46,474 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 03:55:46,474 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 03:55:46,475 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 03:55:46,476 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 03:55:46,476 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 03:55:46,476 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 03:55:46,477 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-29 03:55:46,477 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 03:55:46,478 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 03:55:46,478 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 03:55:46,478 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 03:55:46,479 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 03:55:46,479 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 03:55:46,480 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 03:55:46,480 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 03:55:46,480 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 03:55:46,481 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 03:55:46,481 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 03:55:46,481 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 03:55:46,481 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 03:55:46,481 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 03:55:46,481 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 03:55:46,482 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 03:55:46,482 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 03:55:46,482 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 03:55:46,482 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 03:55:46,483 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_c94535de-41d7-47ae-8a44-3cb94ccd9871/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c94535de-41d7-47ae-8a44-3cb94ccd9871/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dbff9cba9b3794b18d55ca52c1abf6279404a7b220f91d79730a04b586f9ee44 [2023-11-29 03:55:46,736 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 03:55:46,760 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 03:55:46,763 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 03:55:46,764 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 03:55:46,765 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 03:55:46,766 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c94535de-41d7-47ae-8a44-3cb94ccd9871/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/weaver/popl20-more-buffer-mult2.wvr.c [2023-11-29 03:55:49,509 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 03:55:49,712 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 03:55:49,713 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c94535de-41d7-47ae-8a44-3cb94ccd9871/sv-benchmarks/c/weaver/popl20-more-buffer-mult2.wvr.c [2023-11-29 03:55:49,722 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c94535de-41d7-47ae-8a44-3cb94ccd9871/bin/uautomizer-verify-BQ2R08f2Ya/data/b3c78df95/380bd85b223b42c6895d4305c1efed2b/FLAG7d6e69276 [2023-11-29 03:55:49,734 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c94535de-41d7-47ae-8a44-3cb94ccd9871/bin/uautomizer-verify-BQ2R08f2Ya/data/b3c78df95/380bd85b223b42c6895d4305c1efed2b [2023-11-29 03:55:49,736 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 03:55:49,737 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 03:55:49,738 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 03:55:49,738 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 03:55:49,743 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 03:55:49,744 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 03:55:49" (1/1) ... [2023-11-29 03:55:49,745 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@612038d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:55:49, skipping insertion in model container [2023-11-29 03:55:49,746 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 03:55:49" (1/1) ... [2023-11-29 03:55:49,775 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 03:55:49,971 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 03:55:49,980 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 03:55:50,014 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 03:55:50,023 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 03:55:50,024 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 03:55:50,030 INFO L206 MainTranslator]: Completed translation [2023-11-29 03:55:50,030 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:55:50 WrapperNode [2023-11-29 03:55:50,030 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 03:55:50,031 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 03:55:50,031 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 03:55:50,032 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 03:55:50,037 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:55:50" (1/1) ... [2023-11-29 03:55:50,047 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:55:50" (1/1) ... [2023-11-29 03:55:50,082 INFO L138 Inliner]: procedures = 27, calls = 77, calls flagged for inlining = 19, calls inlined = 23, statements flattened = 364 [2023-11-29 03:55:50,082 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 03:55:50,083 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 03:55:50,083 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 03:55:50,083 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 03:55:50,095 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:55:50" (1/1) ... [2023-11-29 03:55:50,095 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:55:50" (1/1) ... [2023-11-29 03:55:50,100 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:55:50" (1/1) ... [2023-11-29 03:55:50,121 INFO L175 MemorySlicer]: Split 16 memory accesses to 6 slices as follows [2, 2, 2, 2, 2, 6]. 38 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0, 0]. The 6 writes are split as follows [0, 1, 1, 1, 1, 2]. [2023-11-29 03:55:50,121 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:55:50" (1/1) ... [2023-11-29 03:55:50,121 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:55:50" (1/1) ... [2023-11-29 03:55:50,135 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:55:50" (1/1) ... [2023-11-29 03:55:50,141 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:55:50" (1/1) ... [2023-11-29 03:55:50,144 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:55:50" (1/1) ... [2023-11-29 03:55:50,147 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:55:50" (1/1) ... [2023-11-29 03:55:50,152 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 03:55:50,153 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 03:55:50,153 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 03:55:50,153 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 03:55:50,154 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:55:50" (1/1) ... [2023-11-29 03:55:50,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 03:55:50,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c94535de-41d7-47ae-8a44-3cb94ccd9871/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:55:50,182 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c94535de-41d7-47ae-8a44-3cb94ccd9871/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 03:55:50,184 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c94535de-41d7-47ae-8a44-3cb94ccd9871/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 03:55:50,221 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 03:55:50,222 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 03:55:50,222 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 03:55:50,222 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-29 03:55:50,222 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-29 03:55:50,222 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-29 03:55:50,222 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-29 03:55:50,224 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-11-29 03:55:50,225 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-29 03:55:50,225 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-29 03:55:50,225 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-29 03:55:50,225 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-29 03:55:50,226 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-29 03:55:50,226 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-11-29 03:55:50,226 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-29 03:55:50,226 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-29 03:55:50,226 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-29 03:55:50,227 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-29 03:55:50,228 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-29 03:55:50,228 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-29 03:55:50,228 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-11-29 03:55:50,228 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-11-29 03:55:50,228 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 03:55:50,229 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 03:55:50,229 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 03:55:50,229 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-29 03:55:50,230 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-29 03:55:50,230 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-29 03:55:50,230 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-29 03:55:50,231 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-29 03:55:50,231 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-29 03:55:50,231 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 03:55:50,231 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 03:55:50,232 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 03:55:50,234 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 03:55:50,395 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 03:55:50,396 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 03:55:50,838 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 03:55:51,447 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 03:55:51,448 INFO L309 CfgBuilder]: Removed 6 assume(true) statements. [2023-11-29 03:55:51,448 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 03:55:51 BoogieIcfgContainer [2023-11-29 03:55:51,448 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 03:55:51,451 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 03:55:51,451 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 03:55:51,454 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 03:55:51,454 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 03:55:49" (1/3) ... [2023-11-29 03:55:51,455 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fcdecd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 03:55:51, skipping insertion in model container [2023-11-29 03:55:51,455 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:55:50" (2/3) ... [2023-11-29 03:55:51,456 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fcdecd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 03:55:51, skipping insertion in model container [2023-11-29 03:55:51,456 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 03:55:51" (3/3) ... [2023-11-29 03:55:51,457 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-buffer-mult2.wvr.c [2023-11-29 03:55:51,467 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-29 03:55:51,478 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 03:55:51,478 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2023-11-29 03:55:51,478 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 03:55:51,662 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-29 03:55:51,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 90 places, 83 transitions, 194 flow [2023-11-29 03:55:51,744 INFO L124 PetriNetUnfolderBase]: 6/79 cut-off events. [2023-11-29 03:55:51,744 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-29 03:55:51,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96 conditions, 79 events. 6/79 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 256 event pairs, 0 based on Foata normal form. 0/43 useless extension candidates. Maximal degree in co-relation 63. Up to 2 conditions per place. [2023-11-29 03:55:51,749 INFO L82 GeneralOperation]: Start removeDead. Operand has 90 places, 83 transitions, 194 flow [2023-11-29 03:55:51,753 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 84 places, 77 transitions, 175 flow [2023-11-29 03:55:51,763 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 03:55:51,770 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;@234128f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 03:55:51,770 INFO L358 AbstractCegarLoop]: Starting to check reachability of 60 error locations. [2023-11-29 03:55:51,774 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 03:55:51,775 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2023-11-29 03:55:51,775 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 03:55:51,775 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:55:51,775 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-29 03:55:51,776 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-29 03:55:51,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:55:51,781 INFO L85 PathProgramCache]: Analyzing trace with hash 1093585, now seen corresponding path program 1 times [2023-11-29 03:55:51,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:55:51,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373586724] [2023-11-29 03:55:51,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:55:51,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:55:51,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:55:52,058 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 03:55:52,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:55:52,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373586724] [2023-11-29 03:55:52,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373586724] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:55:52,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:55:52,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 03:55:52,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690653299] [2023-11-29 03:55:52,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:55:52,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:55:52,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:55:52,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:55:52,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 03:55:52,115 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 83 [2023-11-29 03:55:52,118 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 77 transitions, 175 flow. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:55:52,118 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:55:52,118 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 83 [2023-11-29 03:55:52,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:55:57,423 INFO L124 PetriNetUnfolderBase]: 23704/33226 cut-off events. [2023-11-29 03:55:57,423 INFO L125 PetriNetUnfolderBase]: For 584/584 co-relation queries the response was YES. [2023-11-29 03:55:57,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66160 conditions, 33226 events. 23704/33226 cut-off events. For 584/584 co-relation queries the response was YES. Maximal size of possible extension queue 4516. Compared 271574 event pairs, 23261 based on Foata normal form. 2/13977 useless extension candidates. Maximal degree in co-relation 57340. Up to 31462 conditions per place. [2023-11-29 03:55:57,821 INFO L140 encePairwiseOnDemand]: 64/83 looper letters, 50 selfloop transitions, 7 changer transitions 0/75 dead transitions. [2023-11-29 03:55:57,822 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 75 transitions, 285 flow [2023-11-29 03:55:57,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 03:55:57,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 03:55:57,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 157 transitions. [2023-11-29 03:55:57,835 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47289156626506024 [2023-11-29 03:55:57,836 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 157 transitions. [2023-11-29 03:55:57,837 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 157 transitions. [2023-11-29 03:55:57,838 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:55:57,840 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 157 transitions. [2023-11-29 03:55:57,843 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 39.25) internal successors, (157), 4 states have internal predecessors, (157), 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 03:55:57,847 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 83.0) internal successors, (415), 5 states have internal predecessors, (415), 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 03:55:57,848 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 83.0) internal successors, (415), 5 states have internal predecessors, (415), 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 03:55:57,850 INFO L175 Difference]: Start difference. First operand has 84 places, 77 transitions, 175 flow. Second operand 4 states and 157 transitions. [2023-11-29 03:55:57,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 75 transitions, 285 flow [2023-11-29 03:55:58,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 75 transitions, 272 flow, removed 0 selfloop flow, removed 7 redundant places. [2023-11-29 03:55:58,203 INFO L231 Difference]: Finished difference. Result has 75 places, 75 transitions, 206 flow [2023-11-29 03:55:58,206 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=206, PETRI_PLACES=75, PETRI_TRANSITIONS=75} [2023-11-29 03:55:58,209 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, -9 predicate places. [2023-11-29 03:55:58,210 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 75 transitions, 206 flow [2023-11-29 03:55:58,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:55:58,210 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:55:58,210 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-29 03:55:58,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 03:55:58,211 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-29 03:55:58,211 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:55:58,212 INFO L85 PathProgramCache]: Analyzing trace with hash -1779652126, now seen corresponding path program 1 times [2023-11-29 03:55:58,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:55:58,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440823644] [2023-11-29 03:55:58,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:55:58,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:55:58,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:55:58,341 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 03:55:58,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:55:58,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440823644] [2023-11-29 03:55:58,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440823644] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:55:58,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [845724454] [2023-11-29 03:55:58,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:55:58,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:55:58,343 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c94535de-41d7-47ae-8a44-3cb94ccd9871/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:55:58,348 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c94535de-41d7-47ae-8a44-3cb94ccd9871/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:55:58,349 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c94535de-41d7-47ae-8a44-3cb94ccd9871/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 03:55:58,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:55:58,507 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 03:55:58,510 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:55:58,557 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 03:55:58,557 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:55:58,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [845724454] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:55:58,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 03:55:58,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-11-29 03:55:58,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868570863] [2023-11-29 03:55:58,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:55:58,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 03:55:58,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:55:58,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 03:55:58,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-29 03:55:58,575 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 83 [2023-11-29 03:55:58,576 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 75 transitions, 206 flow. Second operand has 6 states, 6 states have (on average 22.833333333333332) internal successors, (137), 6 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:55:58,576 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:55:58,576 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 83 [2023-11-29 03:55:58,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:56:03,263 INFO L124 PetriNetUnfolderBase]: 23704/33224 cut-off events. [2023-11-29 03:56:03,263 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2023-11-29 03:56:03,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65538 conditions, 33224 events. 23704/33224 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 4516. Compared 271199 event pairs, 23261 based on Foata normal form. 2/13978 useless extension candidates. Maximal degree in co-relation 65488. Up to 31452 conditions per place. [2023-11-29 03:56:03,445 INFO L140 encePairwiseOnDemand]: 74/83 looper letters, 43 selfloop transitions, 12 changer transitions 0/73 dead transitions. [2023-11-29 03:56:03,445 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 73 transitions, 308 flow [2023-11-29 03:56:03,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 03:56:03,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 03:56:03,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 189 transitions. [2023-11-29 03:56:03,448 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3795180722891566 [2023-11-29 03:56:03,448 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 189 transitions. [2023-11-29 03:56:03,448 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 189 transitions. [2023-11-29 03:56:03,449 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:56:03,449 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 189 transitions. [2023-11-29 03:56:03,450 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 31.5) internal successors, (189), 6 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:56:03,452 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 83.0) internal successors, (581), 7 states have internal predecessors, (581), 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 03:56:03,453 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 83.0) internal successors, (581), 7 states have internal predecessors, (581), 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 03:56:03,453 INFO L175 Difference]: Start difference. First operand has 75 places, 75 transitions, 206 flow. Second operand 6 states and 189 transitions. [2023-11-29 03:56:03,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 73 transitions, 308 flow [2023-11-29 03:56:03,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 73 transitions, 308 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 03:56:03,455 INFO L231 Difference]: Finished difference. Result has 78 places, 73 transitions, 222 flow [2023-11-29 03:56:03,456 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=222, PETRI_PLACES=78, PETRI_TRANSITIONS=73} [2023-11-29 03:56:03,456 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, -6 predicate places. [2023-11-29 03:56:03,456 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 73 transitions, 222 flow [2023-11-29 03:56:03,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.833333333333332) internal successors, (137), 6 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:56:03,457 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:56:03,457 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2023-11-29 03:56:03,462 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c94535de-41d7-47ae-8a44-3cb94ccd9871/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 03:56:03,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c94535de-41d7-47ae-8a44-3cb94ccd9871/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-11-29 03:56:03,658 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-29 03:56:03,658 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:56:03,658 INFO L85 PathProgramCache]: Analyzing trace with hash 665360045, now seen corresponding path program 1 times [2023-11-29 03:56:03,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:56:03,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501366043] [2023-11-29 03:56:03,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:56:03,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:56:03,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:56:03,743 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 03:56:03,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:56:03,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501366043] [2023-11-29 03:56:03,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501366043] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:56:03,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1923017435] [2023-11-29 03:56:03,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:56:03,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:56:03,745 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c94535de-41d7-47ae-8a44-3cb94ccd9871/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:56:03,746 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c94535de-41d7-47ae-8a44-3cb94ccd9871/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:56:03,752 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c94535de-41d7-47ae-8a44-3cb94ccd9871/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 03:56:03,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:56:03,875 INFO L262 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 03:56:03,876 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:56:03,901 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 03:56:03,902 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:56:03,941 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 03:56:03,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1923017435] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:56:03,941 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:56:03,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2023-11-29 03:56:03,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154572428] [2023-11-29 03:56:03,942 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:56:03,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 03:56:03,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:56:03,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 03:56:03,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-11-29 03:56:03,975 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 83 [2023-11-29 03:56:03,976 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 73 transitions, 222 flow. Second operand has 12 states, 12 states have (on average 23.083333333333332) internal successors, (277), 12 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:56:03,976 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:56:03,976 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 83 [2023-11-29 03:56:03,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:56:08,769 INFO L124 PetriNetUnfolderBase]: 23710/33248 cut-off events. [2023-11-29 03:56:08,769 INFO L125 PetriNetUnfolderBase]: For 51/51 co-relation queries the response was YES. [2023-11-29 03:56:08,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65632 conditions, 33248 events. 23710/33248 cut-off events. For 51/51 co-relation queries the response was YES. Maximal size of possible extension queue 4516. Compared 271749 event pairs, 23261 based on Foata normal form. 6/14005 useless extension candidates. Maximal degree in co-relation 65490. Up to 31463 conditions per place. [2023-11-29 03:56:08,951 INFO L140 encePairwiseOnDemand]: 74/83 looper letters, 48 selfloop transitions, 25 changer transitions 0/91 dead transitions. [2023-11-29 03:56:08,951 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 91 transitions, 482 flow [2023-11-29 03:56:08,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 03:56:08,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 03:56:08,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 299 transitions. [2023-11-29 03:56:08,954 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3602409638554217 [2023-11-29 03:56:08,954 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 299 transitions. [2023-11-29 03:56:08,954 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 299 transitions. [2023-11-29 03:56:08,955 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:56:08,955 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 299 transitions. [2023-11-29 03:56:08,957 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 29.9) internal successors, (299), 10 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:56:08,960 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 83.0) internal successors, (913), 11 states have internal predecessors, (913), 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 03:56:08,961 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 83.0) internal successors, (913), 11 states have internal predecessors, (913), 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 03:56:08,961 INFO L175 Difference]: Start difference. First operand has 78 places, 73 transitions, 222 flow. Second operand 10 states and 299 transitions. [2023-11-29 03:56:08,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 91 transitions, 482 flow [2023-11-29 03:56:08,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 91 transitions, 424 flow, removed 12 selfloop flow, removed 5 redundant places. [2023-11-29 03:56:08,965 INFO L231 Difference]: Finished difference. Result has 85 places, 91 transitions, 362 flow [2023-11-29 03:56:08,965 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=362, PETRI_PLACES=85, PETRI_TRANSITIONS=91} [2023-11-29 03:56:08,966 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, 1 predicate places. [2023-11-29 03:56:08,966 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 91 transitions, 362 flow [2023-11-29 03:56:08,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 23.083333333333332) internal successors, (277), 12 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:56:08,967 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:56:08,967 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:56:08,971 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c94535de-41d7-47ae-8a44-3cb94ccd9871/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 03:56:09,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c94535de-41d7-47ae-8a44-3cb94ccd9871/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-11-29 03:56:09,168 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-29 03:56:09,168 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:56:09,168 INFO L85 PathProgramCache]: Analyzing trace with hash -564232106, now seen corresponding path program 1 times [2023-11-29 03:56:09,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:56:09,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015760726] [2023-11-29 03:56:09,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:56:09,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:56:09,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:56:09,265 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 03:56:09,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:56:09,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015760726] [2023-11-29 03:56:09,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015760726] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:56:09,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:56:09,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 03:56:09,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669438334] [2023-11-29 03:56:09,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:56:09,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:56:09,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:56:09,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:56:09,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 03:56:09,268 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 83 [2023-11-29 03:56:09,268 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 91 transitions, 362 flow. Second operand has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:56:09,268 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:56:09,268 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 83 [2023-11-29 03:56:09,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:56:14,359 INFO L124 PetriNetUnfolderBase]: 25701/36325 cut-off events. [2023-11-29 03:56:14,359 INFO L125 PetriNetUnfolderBase]: For 112/112 co-relation queries the response was YES. [2023-11-29 03:56:14,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71724 conditions, 36325 events. 25701/36325 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 4622. Compared 302226 event pairs, 25214 based on Foata normal form. 688/16700 useless extension candidates. Maximal degree in co-relation 71628. Up to 31478 conditions per place. [2023-11-29 03:56:14,651 INFO L140 encePairwiseOnDemand]: 68/83 looper letters, 111 selfloop transitions, 5 changer transitions 0/136 dead transitions. [2023-11-29 03:56:14,651 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 136 transitions, 765 flow [2023-11-29 03:56:14,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 03:56:14,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 03:56:14,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 226 transitions. [2023-11-29 03:56:14,654 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5445783132530121 [2023-11-29 03:56:14,654 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 226 transitions. [2023-11-29 03:56:14,654 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 226 transitions. [2023-11-29 03:56:14,655 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:56:14,655 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 226 transitions. [2023-11-29 03:56:14,656 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 45.2) internal successors, (226), 5 states have internal predecessors, (226), 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 03:56:14,658 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 83.0) internal successors, (498), 6 states have internal predecessors, (498), 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 03:56:14,658 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 83.0) internal successors, (498), 6 states have internal predecessors, (498), 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 03:56:14,658 INFO L175 Difference]: Start difference. First operand has 85 places, 91 transitions, 362 flow. Second operand 5 states and 226 transitions. [2023-11-29 03:56:14,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 136 transitions, 765 flow [2023-11-29 03:56:14,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 136 transitions, 731 flow, removed 9 selfloop flow, removed 2 redundant places. [2023-11-29 03:56:14,665 INFO L231 Difference]: Finished difference. Result has 89 places, 93 transitions, 389 flow [2023-11-29 03:56:14,665 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=338, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=389, PETRI_PLACES=89, PETRI_TRANSITIONS=93} [2023-11-29 03:56:14,666 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, 5 predicate places. [2023-11-29 03:56:14,666 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 93 transitions, 389 flow [2023-11-29 03:56:14,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:56:14,667 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:56:14,667 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:56:14,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 03:56:14,667 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-29 03:56:14,667 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:56:14,668 INFO L85 PathProgramCache]: Analyzing trace with hash -1810793622, now seen corresponding path program 1 times [2023-11-29 03:56:14,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:56:14,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521923236] [2023-11-29 03:56:14,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:56:14,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:56:14,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:56:14,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:56:14,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:56:14,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521923236] [2023-11-29 03:56:14,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521923236] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:56:14,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:56:14,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 03:56:14,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337557696] [2023-11-29 03:56:14,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:56:14,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:56:14,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:56:14,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:56:14,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:56:14,726 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 83 [2023-11-29 03:56:14,726 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 93 transitions, 389 flow. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 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 03:56:14,727 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:56:14,727 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 83 [2023-11-29 03:56:14,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:56:18,880 INFO L124 PetriNetUnfolderBase]: 22391/31723 cut-off events. [2023-11-29 03:56:18,881 INFO L125 PetriNetUnfolderBase]: For 1953/1953 co-relation queries the response was YES. [2023-11-29 03:56:18,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72041 conditions, 31723 events. 22391/31723 cut-off events. For 1953/1953 co-relation queries the response was YES. Maximal size of possible extension queue 3976. Compared 261877 event pairs, 21962 based on Foata normal form. 0/14240 useless extension candidates. Maximal degree in co-relation 71946. Up to 30000 conditions per place. [2023-11-29 03:56:19,126 INFO L140 encePairwiseOnDemand]: 81/83 looper letters, 71 selfloop transitions, 1 changer transitions 0/92 dead transitions. [2023-11-29 03:56:19,126 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 92 transitions, 531 flow [2023-11-29 03:56:19,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:56:19,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 03:56:19,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 125 transitions. [2023-11-29 03:56:19,128 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5020080321285141 [2023-11-29 03:56:19,128 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 125 transitions. [2023-11-29 03:56:19,128 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 125 transitions. [2023-11-29 03:56:19,128 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:56:19,128 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 125 transitions. [2023-11-29 03:56:19,128 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:56:19,129 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 83.0) internal successors, (332), 4 states have internal predecessors, (332), 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 03:56:19,129 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 83.0) internal successors, (332), 4 states have internal predecessors, (332), 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 03:56:19,129 INFO L175 Difference]: Start difference. First operand has 89 places, 93 transitions, 389 flow. Second operand 3 states and 125 transitions. [2023-11-29 03:56:19,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 92 transitions, 531 flow [2023-11-29 03:56:19,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 92 transitions, 527 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-29 03:56:19,137 INFO L231 Difference]: Finished difference. Result has 89 places, 92 transitions, 385 flow [2023-11-29 03:56:19,137 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=383, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=385, PETRI_PLACES=89, PETRI_TRANSITIONS=92} [2023-11-29 03:56:19,138 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, 5 predicate places. [2023-11-29 03:56:19,138 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 92 transitions, 385 flow [2023-11-29 03:56:19,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 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 03:56:19,139 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:56:19,139 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:56:19,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 03:56:19,139 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-29 03:56:19,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:56:19,140 INFO L85 PathProgramCache]: Analyzing trace with hash -1810793621, now seen corresponding path program 1 times [2023-11-29 03:56:19,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:56:19,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096760358] [2023-11-29 03:56:19,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:56:19,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:56:19,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:56:19,178 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 03:56:19,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:56:19,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096760358] [2023-11-29 03:56:19,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096760358] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:56:19,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:56:19,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 03:56:19,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017713747] [2023-11-29 03:56:19,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:56:19,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:56:19,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:56:19,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:56:19,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:56:19,181 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 83 [2023-11-29 03:56:19,181 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 92 transitions, 385 flow. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 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 03:56:19,181 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:56:19,181 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 83 [2023-11-29 03:56:19,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:56:22,328 INFO L124 PetriNetUnfolderBase]: 19081/27121 cut-off events. [2023-11-29 03:56:22,328 INFO L125 PetriNetUnfolderBase]: For 1691/1691 co-relation queries the response was YES. [2023-11-29 03:56:22,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61634 conditions, 27121 events. 19081/27121 cut-off events. For 1691/1691 co-relation queries the response was YES. Maximal size of possible extension queue 3301. Compared 221280 event pairs, 18710 based on Foata normal form. 0/12576 useless extension candidates. Maximal degree in co-relation 61618. Up to 25600 conditions per place. [2023-11-29 03:56:22,479 INFO L140 encePairwiseOnDemand]: 81/83 looper letters, 65 selfloop transitions, 6 changer transitions 0/91 dead transitions. [2023-11-29 03:56:22,480 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 91 transitions, 525 flow [2023-11-29 03:56:22,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:56:22,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 03:56:22,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 124 transitions. [2023-11-29 03:56:22,481 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4979919678714859 [2023-11-29 03:56:22,481 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 124 transitions. [2023-11-29 03:56:22,481 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 124 transitions. [2023-11-29 03:56:22,481 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:56:22,481 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 124 transitions. [2023-11-29 03:56:22,481 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 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 03:56:22,482 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 83.0) internal successors, (332), 4 states have internal predecessors, (332), 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 03:56:22,482 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 83.0) internal successors, (332), 4 states have internal predecessors, (332), 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 03:56:22,482 INFO L175 Difference]: Start difference. First operand has 89 places, 92 transitions, 385 flow. Second operand 3 states and 124 transitions. [2023-11-29 03:56:22,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 91 transitions, 525 flow [2023-11-29 03:56:22,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 91 transitions, 514 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 03:56:22,487 INFO L231 Difference]: Finished difference. Result has 88 places, 91 transitions, 384 flow [2023-11-29 03:56:22,488 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=372, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=384, PETRI_PLACES=88, PETRI_TRANSITIONS=91} [2023-11-29 03:56:22,488 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, 4 predicate places. [2023-11-29 03:56:22,488 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 91 transitions, 384 flow [2023-11-29 03:56:22,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 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 03:56:22,489 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:56:22,489 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:56:22,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 03:56:22,489 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-29 03:56:22,489 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:56:22,489 INFO L85 PathProgramCache]: Analyzing trace with hash -1810793619, now seen corresponding path program 1 times [2023-11-29 03:56:22,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:56:22,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290510658] [2023-11-29 03:56:22,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:56:22,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:56:22,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:56:22,589 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 03:56:22,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:56:22,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290510658] [2023-11-29 03:56:22,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290510658] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:56:22,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:56:22,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 03:56:22,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620291933] [2023-11-29 03:56:22,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:56:22,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:56:22,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:56:22,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:56:22,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 03:56:22,591 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 83 [2023-11-29 03:56:22,592 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 91 transitions, 384 flow. Second operand has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 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 03:56:22,592 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:56:22,592 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 83 [2023-11-29 03:56:22,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:56:26,118 INFO L124 PetriNetUnfolderBase]: 20690/29922 cut-off events. [2023-11-29 03:56:26,118 INFO L125 PetriNetUnfolderBase]: For 1856/1856 co-relation queries the response was YES. [2023-11-29 03:56:26,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67984 conditions, 29922 events. 20690/29922 cut-off events. For 1856/1856 co-relation queries the response was YES. Maximal size of possible extension queue 3323. Compared 250216 event pairs, 20308 based on Foata normal form. 492/15053 useless extension candidates. Maximal degree in co-relation 67969. Up to 25628 conditions per place. [2023-11-29 03:56:26,309 INFO L140 encePairwiseOnDemand]: 70/83 looper letters, 88 selfloop transitions, 8 changer transitions 3/119 dead transitions. [2023-11-29 03:56:26,309 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 119 transitions, 666 flow [2023-11-29 03:56:26,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 03:56:26,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 03:56:26,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 190 transitions. [2023-11-29 03:56:26,310 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.572289156626506 [2023-11-29 03:56:26,311 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 190 transitions. [2023-11-29 03:56:26,311 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 190 transitions. [2023-11-29 03:56:26,311 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:56:26,311 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 190 transitions. [2023-11-29 03:56:26,311 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 47.5) internal successors, (190), 4 states have internal predecessors, (190), 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 03:56:26,312 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 83.0) internal successors, (415), 5 states have internal predecessors, (415), 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 03:56:26,312 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 83.0) internal successors, (415), 5 states have internal predecessors, (415), 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 03:56:26,312 INFO L175 Difference]: Start difference. First operand has 88 places, 91 transitions, 384 flow. Second operand 4 states and 190 transitions. [2023-11-29 03:56:26,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 119 transitions, 666 flow [2023-11-29 03:56:26,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 119 transitions, 660 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 03:56:26,319 INFO L231 Difference]: Finished difference. Result has 91 places, 90 transitions, 406 flow [2023-11-29 03:56:26,319 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=378, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=406, PETRI_PLACES=91, PETRI_TRANSITIONS=90} [2023-11-29 03:56:26,320 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, 7 predicate places. [2023-11-29 03:56:26,320 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 90 transitions, 406 flow [2023-11-29 03:56:26,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 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 03:56:26,320 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:56:26,320 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:56:26,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 03:56:26,321 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-29 03:56:26,321 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:56:26,321 INFO L85 PathProgramCache]: Analyzing trace with hash 1911630053, now seen corresponding path program 1 times [2023-11-29 03:56:26,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:56:26,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271819900] [2023-11-29 03:56:26,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:56:26,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:56:26,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:56:26,437 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 03:56:26,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:56:26,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271819900] [2023-11-29 03:56:26,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271819900] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:56:26,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1149386432] [2023-11-29 03:56:26,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:56:26,438 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:56:26,438 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c94535de-41d7-47ae-8a44-3cb94ccd9871/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:56:26,439 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c94535de-41d7-47ae-8a44-3cb94ccd9871/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:56:26,444 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c94535de-41d7-47ae-8a44-3cb94ccd9871/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 03:56:26,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:56:26,573 INFO L262 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 03:56:26,575 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:56:26,598 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 03:56:26,598 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:56:26,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1149386432] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:56:26,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 03:56:26,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2023-11-29 03:56:26,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332783907] [2023-11-29 03:56:26,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:56:26,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:56:26,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:56:26,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:56:26,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-29 03:56:26,600 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 83 [2023-11-29 03:56:26,600 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 90 transitions, 406 flow. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 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 03:56:26,600 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:56:26,601 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 83 [2023-11-29 03:56:26,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:56:29,315 INFO L124 PetriNetUnfolderBase]: 15546/22598 cut-off events. [2023-11-29 03:56:29,315 INFO L125 PetriNetUnfolderBase]: For 2853/2853 co-relation queries the response was YES. [2023-11-29 03:56:29,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57818 conditions, 22598 events. 15546/22598 cut-off events. For 2853/2853 co-relation queries the response was YES. Maximal size of possible extension queue 2422. Compared 185448 event pairs, 15251 based on Foata normal form. 0/11542 useless extension candidates. Maximal degree in co-relation 57802. Up to 21184 conditions per place. [2023-11-29 03:56:29,487 INFO L140 encePairwiseOnDemand]: 80/83 looper letters, 67 selfloop transitions, 1 changer transitions 0/88 dead transitions. [2023-11-29 03:56:29,487 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 88 transitions, 534 flow [2023-11-29 03:56:29,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:56:29,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 03:56:29,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 123 transitions. [2023-11-29 03:56:29,488 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4939759036144578 [2023-11-29 03:56:29,489 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 123 transitions. [2023-11-29 03:56:29,489 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 123 transitions. [2023-11-29 03:56:29,489 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:56:29,489 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 123 transitions. [2023-11-29 03:56:29,489 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:56:29,490 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 83.0) internal successors, (332), 4 states have internal predecessors, (332), 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 03:56:29,490 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 83.0) internal successors, (332), 4 states have internal predecessors, (332), 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 03:56:29,490 INFO L175 Difference]: Start difference. First operand has 91 places, 90 transitions, 406 flow. Second operand 3 states and 123 transitions. [2023-11-29 03:56:29,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 88 transitions, 534 flow [2023-11-29 03:56:29,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 88 transitions, 527 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 03:56:29,498 INFO L231 Difference]: Finished difference. Result has 90 places, 88 transitions, 393 flow [2023-11-29 03:56:29,498 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=391, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=393, PETRI_PLACES=90, PETRI_TRANSITIONS=88} [2023-11-29 03:56:29,499 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, 6 predicate places. [2023-11-29 03:56:29,499 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 88 transitions, 393 flow [2023-11-29 03:56:29,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 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 03:56:29,499 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:56:29,500 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:56:29,505 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c94535de-41d7-47ae-8a44-3cb94ccd9871/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-29 03:56:29,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c94535de-41d7-47ae-8a44-3cb94ccd9871/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-29 03:56:29,700 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-29 03:56:29,701 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:56:29,701 INFO L85 PathProgramCache]: Analyzing trace with hash 1911630055, now seen corresponding path program 1 times [2023-11-29 03:56:29,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:56:29,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995362127] [2023-11-29 03:56:29,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:56:29,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:56:29,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:56:29,774 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 03:56:29,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:56:29,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995362127] [2023-11-29 03:56:29,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995362127] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:56:29,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:56:29,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 03:56:29,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910179369] [2023-11-29 03:56:29,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:56:29,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:56:29,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:56:29,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:56:29,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:56:29,783 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 83 [2023-11-29 03:56:29,784 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 88 transitions, 393 flow. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 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 03:56:29,784 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:56:29,784 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 83 [2023-11-29 03:56:29,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:56:33,373 INFO L124 PetriNetUnfolderBase]: 20843/30769 cut-off events. [2023-11-29 03:56:33,373 INFO L125 PetriNetUnfolderBase]: For 4146/4146 co-relation queries the response was YES. [2023-11-29 03:56:33,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77454 conditions, 30769 events. 20843/30769 cut-off events. For 4146/4146 co-relation queries the response was YES. Maximal size of possible extension queue 2824. Compared 254622 event pairs, 7703 based on Foata normal form. 0/17531 useless extension candidates. Maximal degree in co-relation 77437. Up to 17329 conditions per place. [2023-11-29 03:56:33,625 INFO L140 encePairwiseOnDemand]: 79/83 looper letters, 99 selfloop transitions, 2 changer transitions 0/121 dead transitions. [2023-11-29 03:56:33,625 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 121 transitions, 700 flow [2023-11-29 03:56:33,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:56:33,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 03:56:33,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 156 transitions. [2023-11-29 03:56:33,627 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6265060240963856 [2023-11-29 03:56:33,627 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 156 transitions. [2023-11-29 03:56:33,627 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 156 transitions. [2023-11-29 03:56:33,627 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:56:33,627 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 156 transitions. [2023-11-29 03:56:33,628 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 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 03:56:33,628 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 83.0) internal successors, (332), 4 states have internal predecessors, (332), 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 03:56:33,629 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 83.0) internal successors, (332), 4 states have internal predecessors, (332), 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 03:56:33,629 INFO L175 Difference]: Start difference. First operand has 90 places, 88 transitions, 393 flow. Second operand 3 states and 156 transitions. [2023-11-29 03:56:33,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 121 transitions, 700 flow [2023-11-29 03:56:33,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 121 transitions, 699 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 03:56:33,641 INFO L231 Difference]: Finished difference. Result has 92 places, 89 transitions, 408 flow [2023-11-29 03:56:33,642 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=392, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=408, PETRI_PLACES=92, PETRI_TRANSITIONS=89} [2023-11-29 03:56:33,642 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, 8 predicate places. [2023-11-29 03:56:33,642 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 89 transitions, 408 flow [2023-11-29 03:56:33,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 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 03:56:33,643 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:56:33,643 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:56:33,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 03:56:33,643 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-29 03:56:33,643 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:56:33,643 INFO L85 PathProgramCache]: Analyzing trace with hash 1133039090, now seen corresponding path program 1 times [2023-11-29 03:56:33,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:56:33,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506047223] [2023-11-29 03:56:33,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:56:33,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:56:33,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:56:33,691 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 03:56:33,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:56:33,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506047223] [2023-11-29 03:56:33,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506047223] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:56:33,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:56:33,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 03:56:33,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250218815] [2023-11-29 03:56:33,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:56:33,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:56:33,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:56:33,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:56:33,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:56:33,700 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 83 [2023-11-29 03:56:33,701 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 89 transitions, 408 flow. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 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 03:56:33,701 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:56:33,701 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 83 [2023-11-29 03:56:33,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:56:38,865 INFO L124 PetriNetUnfolderBase]: 29053/42273 cut-off events. [2023-11-29 03:56:38,865 INFO L125 PetriNetUnfolderBase]: For 11096/11096 co-relation queries the response was YES. [2023-11-29 03:56:39,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111914 conditions, 42273 events. 29053/42273 cut-off events. For 11096/11096 co-relation queries the response was YES. Maximal size of possible extension queue 3488. Compared 348639 event pairs, 10333 based on Foata normal form. 0/24543 useless extension candidates. Maximal degree in co-relation 111895. Up to 23869 conditions per place. [2023-11-29 03:56:39,206 INFO L140 encePairwiseOnDemand]: 79/83 looper letters, 99 selfloop transitions, 2 changer transitions 0/121 dead transitions. [2023-11-29 03:56:39,206 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 121 transitions, 723 flow [2023-11-29 03:56:39,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:56:39,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 03:56:39,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 154 transitions. [2023-11-29 03:56:39,208 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6184738955823293 [2023-11-29 03:56:39,208 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 154 transitions. [2023-11-29 03:56:39,208 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 154 transitions. [2023-11-29 03:56:39,208 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:56:39,208 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 154 transitions. [2023-11-29 03:56:39,209 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 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 03:56:39,209 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 83.0) internal successors, (332), 4 states have internal predecessors, (332), 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 03:56:39,209 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 83.0) internal successors, (332), 4 states have internal predecessors, (332), 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 03:56:39,209 INFO L175 Difference]: Start difference. First operand has 92 places, 89 transitions, 408 flow. Second operand 3 states and 154 transitions. [2023-11-29 03:56:39,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 121 transitions, 723 flow [2023-11-29 03:56:39,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 121 transitions, 720 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 03:56:39,218 INFO L231 Difference]: Finished difference. Result has 94 places, 90 transitions, 422 flow [2023-11-29 03:56:39,218 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=406, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=422, PETRI_PLACES=94, PETRI_TRANSITIONS=90} [2023-11-29 03:56:39,219 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, 10 predicate places. [2023-11-29 03:56:39,219 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 90 transitions, 422 flow [2023-11-29 03:56:39,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 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 03:56:39,219 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:56:39,219 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:56:39,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-29 03:56:39,219 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-29 03:56:39,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:56:39,219 INFO L85 PathProgramCache]: Analyzing trace with hash 1133039089, now seen corresponding path program 1 times [2023-11-29 03:56:39,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:56:39,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481984139] [2023-11-29 03:56:39,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:56:39,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:56:39,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:56:39,360 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 03:56:39,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:56:39,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481984139] [2023-11-29 03:56:39,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481984139] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:56:39,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [458578345] [2023-11-29 03:56:39,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:56:39,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:56:39,361 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c94535de-41d7-47ae-8a44-3cb94ccd9871/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:56:39,362 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c94535de-41d7-47ae-8a44-3cb94ccd9871/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:56:39,365 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c94535de-41d7-47ae-8a44-3cb94ccd9871/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 03:56:39,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:56:39,504 INFO L262 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 03:56:39,506 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:56:39,532 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 03:56:39,533 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:56:39,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [458578345] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:56:39,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 03:56:39,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-11-29 03:56:39,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17438284] [2023-11-29 03:56:39,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:56:39,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:56:39,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:56:39,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:56:39,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-29 03:56:39,535 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 83 [2023-11-29 03:56:39,535 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 90 transitions, 422 flow. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 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 03:56:39,535 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:56:39,536 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 83 [2023-11-29 03:56:39,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:56:43,014 INFO L124 PetriNetUnfolderBase]: 20133/28635 cut-off events. [2023-11-29 03:56:43,015 INFO L125 PetriNetUnfolderBase]: For 12724/12724 co-relation queries the response was YES. [2023-11-29 03:56:43,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80102 conditions, 28635 events. 20133/28635 cut-off events. For 12724/12724 co-relation queries the response was YES. Maximal size of possible extension queue 2111. Compared 220822 event pairs, 18045 based on Foata normal form. 1912/19091 useless extension candidates. Maximal degree in co-relation 80081. Up to 26962 conditions per place. [2023-11-29 03:56:43,249 INFO L140 encePairwiseOnDemand]: 80/83 looper letters, 67 selfloop transitions, 1 changer transitions 0/88 dead transitions. [2023-11-29 03:56:43,249 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 88 transitions, 550 flow [2023-11-29 03:56:43,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:56:43,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 03:56:43,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 121 transitions. [2023-11-29 03:56:43,251 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4859437751004016 [2023-11-29 03:56:43,251 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 121 transitions. [2023-11-29 03:56:43,251 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 121 transitions. [2023-11-29 03:56:43,251 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:56:43,251 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 121 transitions. [2023-11-29 03:56:43,251 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:56:43,252 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 83.0) internal successors, (332), 4 states have internal predecessors, (332), 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 03:56:43,252 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 83.0) internal successors, (332), 4 states have internal predecessors, (332), 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 03:56:43,252 INFO L175 Difference]: Start difference. First operand has 94 places, 90 transitions, 422 flow. Second operand 3 states and 121 transitions. [2023-11-29 03:56:43,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 88 transitions, 550 flow [2023-11-29 03:56:43,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 88 transitions, 548 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 03:56:43,261 INFO L231 Difference]: Finished difference. Result has 93 places, 88 transitions, 414 flow [2023-11-29 03:56:43,261 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=412, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=414, PETRI_PLACES=93, PETRI_TRANSITIONS=88} [2023-11-29 03:56:43,262 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, 9 predicate places. [2023-11-29 03:56:43,262 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 88 transitions, 414 flow [2023-11-29 03:56:43,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 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 03:56:43,262 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:56:43,262 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:56:43,267 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c94535de-41d7-47ae-8a44-3cb94ccd9871/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 03:56:43,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c94535de-41d7-47ae-8a44-3cb94ccd9871/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:56:43,463 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-29 03:56:43,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:56:43,463 INFO L85 PathProgramCache]: Analyzing trace with hash -1894235716, now seen corresponding path program 1 times [2023-11-29 03:56:43,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:56:43,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781452573] [2023-11-29 03:56:43,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:56:43,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:56:43,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:56:43,539 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 03:56:43,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:56:43,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781452573] [2023-11-29 03:56:43,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781452573] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:56:43,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1043017613] [2023-11-29 03:56:43,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:56:43,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:56:43,540 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c94535de-41d7-47ae-8a44-3cb94ccd9871/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:56:43,540 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c94535de-41d7-47ae-8a44-3cb94ccd9871/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:56:43,552 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c94535de-41d7-47ae-8a44-3cb94ccd9871/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 03:56:43,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:56:43,692 INFO L262 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 03:56:43,693 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:56:43,717 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 03:56:43,717 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:56:43,745 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 03:56:43,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1043017613] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:56:43,745 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:56:43,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-11-29 03:56:43,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282185206] [2023-11-29 03:56:43,746 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:56:43,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 03:56:43,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:56:43,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 03:56:43,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-29 03:56:43,772 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 83 [2023-11-29 03:56:43,773 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 88 transitions, 414 flow. Second operand has 7 states, 7 states have (on average 29.285714285714285) internal successors, (205), 7 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 03:56:43,773 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:56:43,773 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 83 [2023-11-29 03:56:43,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:56:52,167 INFO L124 PetriNetUnfolderBase]: 42733/63995 cut-off events. [2023-11-29 03:56:52,167 INFO L125 PetriNetUnfolderBase]: For 25948/25948 co-relation queries the response was YES. [2023-11-29 03:56:52,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 171871 conditions, 63995 events. 42733/63995 cut-off events. For 25948/25948 co-relation queries the response was YES. Maximal size of possible extension queue 3827. Compared 552685 event pairs, 7051 based on Foata normal form. 0/41407 useless extension candidates. Maximal degree in co-relation 171849. Up to 17341 conditions per place. [2023-11-29 03:56:52,610 INFO L140 encePairwiseOnDemand]: 79/83 looper letters, 213 selfloop transitions, 9 changer transitions 0/242 dead transitions. [2023-11-29 03:56:52,611 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 242 transitions, 1402 flow [2023-11-29 03:56:52,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 03:56:52,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 03:56:52,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 376 transitions. [2023-11-29 03:56:52,612 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6471600688468159 [2023-11-29 03:56:52,612 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 376 transitions. [2023-11-29 03:56:52,612 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 376 transitions. [2023-11-29 03:56:52,613 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:56:52,613 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 376 transitions. [2023-11-29 03:56:52,614 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 53.714285714285715) internal successors, (376), 7 states have internal predecessors, (376), 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 03:56:52,615 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 83.0) internal successors, (664), 8 states have internal predecessors, (664), 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 03:56:52,615 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 83.0) internal successors, (664), 8 states have internal predecessors, (664), 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 03:56:52,615 INFO L175 Difference]: Start difference. First operand has 93 places, 88 transitions, 414 flow. Second operand 7 states and 376 transitions. [2023-11-29 03:56:52,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 242 transitions, 1402 flow [2023-11-29 03:56:52,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 242 transitions, 1401 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 03:56:52,626 INFO L231 Difference]: Finished difference. Result has 101 places, 94 transitions, 484 flow [2023-11-29 03:56:52,627 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=413, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=484, PETRI_PLACES=101, PETRI_TRANSITIONS=94} [2023-11-29 03:56:52,627 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, 17 predicate places. [2023-11-29 03:56:52,627 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 94 transitions, 484 flow [2023-11-29 03:56:52,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 29.285714285714285) internal successors, (205), 7 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 03:56:52,628 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:56:52,628 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:56:52,632 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c94535de-41d7-47ae-8a44-3cb94ccd9871/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 03:56:52,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c94535de-41d7-47ae-8a44-3cb94ccd9871/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:56:52,828 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-29 03:56:52,829 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:56:52,829 INFO L85 PathProgramCache]: Analyzing trace with hash -1894235717, now seen corresponding path program 1 times [2023-11-29 03:56:52,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:56:52,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630978932] [2023-11-29 03:56:52,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:56:52,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:56:52,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:56:52,886 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 03:56:52,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:56:52,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630978932] [2023-11-29 03:56:52,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630978932] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:56:52,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:56:52,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 03:56:52,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171110538] [2023-11-29 03:56:52,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:56:52,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:56:52,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:56:52,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:56:52,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:56:52,895 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 83 [2023-11-29 03:56:52,896 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 94 transitions, 484 flow. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 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 03:56:52,896 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:56:52,896 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 83 [2023-11-29 03:56:52,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:57:00,274 INFO L124 PetriNetUnfolderBase]: 38493/54587 cut-off events. [2023-11-29 03:57:00,274 INFO L125 PetriNetUnfolderBase]: For 65284/65284 co-relation queries the response was YES. [2023-11-29 03:57:00,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 157335 conditions, 54587 events. 38493/54587 cut-off events. For 65284/65284 co-relation queries the response was YES. Maximal size of possible extension queue 3176. Compared 440248 event pairs, 35291 based on Foata normal form. 1544/36891 useless extension candidates. Maximal degree in co-relation 157309. Up to 51652 conditions per place. [2023-11-29 03:57:00,692 INFO L140 encePairwiseOnDemand]: 81/83 looper letters, 69 selfloop transitions, 1 changer transitions 0/90 dead transitions. [2023-11-29 03:57:00,693 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 90 transitions, 589 flow [2023-11-29 03:57:00,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:57:00,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 03:57:00,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 119 transitions. [2023-11-29 03:57:00,694 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4779116465863454 [2023-11-29 03:57:00,694 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 119 transitions. [2023-11-29 03:57:00,694 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 119 transitions. [2023-11-29 03:57:00,694 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:57:00,694 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 119 transitions. [2023-11-29 03:57:00,694 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 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 03:57:00,695 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 83.0) internal successors, (332), 4 states have internal predecessors, (332), 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 03:57:00,695 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 83.0) internal successors, (332), 4 states have internal predecessors, (332), 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 03:57:00,695 INFO L175 Difference]: Start difference. First operand has 101 places, 94 transitions, 484 flow. Second operand 3 states and 119 transitions. [2023-11-29 03:57:00,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 90 transitions, 589 flow [2023-11-29 03:57:00,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 90 transitions, 581 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-11-29 03:57:00,713 INFO L231 Difference]: Finished difference. Result has 100 places, 90 transitions, 443 flow [2023-11-29 03:57:00,713 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=441, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=443, PETRI_PLACES=100, PETRI_TRANSITIONS=90} [2023-11-29 03:57:00,713 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, 16 predicate places. [2023-11-29 03:57:00,714 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 90 transitions, 443 flow [2023-11-29 03:57:00,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 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 03:57:00,714 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:57:00,714 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:57:00,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-29 03:57:00,714 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-29 03:57:00,714 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:57:00,714 INFO L85 PathProgramCache]: Analyzing trace with hash 1004302138, now seen corresponding path program 1 times [2023-11-29 03:57:00,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:57:00,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357972273] [2023-11-29 03:57:00,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:57:00,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:57:00,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:57:00,776 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 03:57:00,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:57:00,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357972273] [2023-11-29 03:57:00,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357972273] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:57:00,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:57:00,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 03:57:00,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049967439] [2023-11-29 03:57:00,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:57:00,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:57:00,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:57:00,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:57:00,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:57:00,782 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 83 [2023-11-29 03:57:00,783 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 90 transitions, 443 flow. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:57:00,783 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:57:00,783 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 83 [2023-11-29 03:57:00,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:57:08,792 INFO L124 PetriNetUnfolderBase]: 41725/57879 cut-off events. [2023-11-29 03:57:08,792 INFO L125 PetriNetUnfolderBase]: For 35340/35340 co-relation queries the response was YES. [2023-11-29 03:57:09,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 161378 conditions, 57879 events. 41725/57879 cut-off events. For 35340/35340 co-relation queries the response was YES. Maximal size of possible extension queue 3166. Compared 409897 event pairs, 9571 based on Foata normal form. 292/37233 useless extension candidates. Maximal degree in co-relation 161351. Up to 49287 conditions per place. [2023-11-29 03:57:09,259 INFO L140 encePairwiseOnDemand]: 76/83 looper letters, 94 selfloop transitions, 2 changer transitions 0/116 dead transitions. [2023-11-29 03:57:09,259 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 116 transitions, 720 flow [2023-11-29 03:57:09,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:57:09,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 03:57:09,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 149 transitions. [2023-11-29 03:57:09,260 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5983935742971888 [2023-11-29 03:57:09,260 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 149 transitions. [2023-11-29 03:57:09,260 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 149 transitions. [2023-11-29 03:57:09,260 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:57:09,261 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 149 transitions. [2023-11-29 03:57:09,261 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 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 03:57:09,261 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 83.0) internal successors, (332), 4 states have internal predecessors, (332), 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 03:57:09,262 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 83.0) internal successors, (332), 4 states have internal predecessors, (332), 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 03:57:09,262 INFO L175 Difference]: Start difference. First operand has 100 places, 90 transitions, 443 flow. Second operand 3 states and 149 transitions. [2023-11-29 03:57:09,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 116 transitions, 720 flow [2023-11-29 03:57:09,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 116 transitions, 719 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 03:57:09,350 INFO L231 Difference]: Finished difference. Result has 102 places, 90 transitions, 458 flow [2023-11-29 03:57:09,351 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=442, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=458, PETRI_PLACES=102, PETRI_TRANSITIONS=90} [2023-11-29 03:57:09,351 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, 18 predicate places. [2023-11-29 03:57:09,351 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 90 transitions, 458 flow [2023-11-29 03:57:09,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:57:09,351 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:57:09,352 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:57:09,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-29 03:57:09,352 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-29 03:57:09,352 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:57:09,352 INFO L85 PathProgramCache]: Analyzing trace with hash 220733309, now seen corresponding path program 1 times [2023-11-29 03:57:09,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:57:09,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751467790] [2023-11-29 03:57:09,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:57:09,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:57:09,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:57:09,394 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 03:57:09,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:57:09,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751467790] [2023-11-29 03:57:09,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751467790] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:57:09,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:57:09,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 03:57:09,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221726011] [2023-11-29 03:57:09,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:57:09,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:57:09,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:57:09,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:57:09,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:57:09,403 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 83 [2023-11-29 03:57:09,403 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 90 transitions, 458 flow. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:57:09,403 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:57:09,403 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 83 [2023-11-29 03:57:09,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:57:15,222 INFO L124 PetriNetUnfolderBase]: 28518/40810 cut-off events. [2023-11-29 03:57:15,222 INFO L125 PetriNetUnfolderBase]: For 38602/38602 co-relation queries the response was YES. [2023-11-29 03:57:15,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121083 conditions, 40810 events. 28518/40810 cut-off events. For 38602/38602 co-relation queries the response was YES. Maximal size of possible extension queue 2516. Compared 324191 event pairs, 25816 based on Foata normal form. 0/27869 useless extension candidates. Maximal degree in co-relation 121054. Up to 38523 conditions per place. [2023-11-29 03:57:15,544 INFO L140 encePairwiseOnDemand]: 81/83 looper letters, 68 selfloop transitions, 1 changer transitions 0/89 dead transitions. [2023-11-29 03:57:15,544 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 89 transitions, 590 flow [2023-11-29 03:57:15,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:57:15,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 03:57:15,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 118 transitions. [2023-11-29 03:57:15,546 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4738955823293173 [2023-11-29 03:57:15,546 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 118 transitions. [2023-11-29 03:57:15,546 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 118 transitions. [2023-11-29 03:57:15,546 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:57:15,546 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 118 transitions. [2023-11-29 03:57:15,546 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:57:15,547 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 83.0) internal successors, (332), 4 states have internal predecessors, (332), 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 03:57:15,547 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 83.0) internal successors, (332), 4 states have internal predecessors, (332), 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 03:57:15,547 INFO L175 Difference]: Start difference. First operand has 102 places, 90 transitions, 458 flow. Second operand 3 states and 118 transitions. [2023-11-29 03:57:15,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 89 transitions, 590 flow [2023-11-29 03:57:15,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 89 transitions, 586 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 03:57:15,567 INFO L231 Difference]: Finished difference. Result has 101 places, 89 transitions, 450 flow [2023-11-29 03:57:15,567 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=448, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=450, PETRI_PLACES=101, PETRI_TRANSITIONS=89} [2023-11-29 03:57:15,567 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, 17 predicate places. [2023-11-29 03:57:15,568 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 89 transitions, 450 flow [2023-11-29 03:57:15,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:57:15,568 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:57:15,568 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:57:15,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-29 03:57:15,568 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-29 03:57:15,568 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:57:15,568 INFO L85 PathProgramCache]: Analyzing trace with hash 220733310, now seen corresponding path program 1 times [2023-11-29 03:57:15,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:57:15,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694199218] [2023-11-29 03:57:15,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:57:15,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:57:15,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:57:15,635 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 03:57:15,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:57:15,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694199218] [2023-11-29 03:57:15,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694199218] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:57:15,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2116019889] [2023-11-29 03:57:15,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:57:15,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:57:15,636 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c94535de-41d7-47ae-8a44-3cb94ccd9871/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:57:15,637 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c94535de-41d7-47ae-8a44-3cb94ccd9871/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:57:15,640 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c94535de-41d7-47ae-8a44-3cb94ccd9871/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 03:57:15,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:57:15,787 INFO L262 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 03:57:15,789 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:57:15,868 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:57:15,868 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:57:15,985 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 03:57:15,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2116019889] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:57:15,986 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:57:15,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 6, 6] total 12 [2023-11-29 03:57:15,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956828115] [2023-11-29 03:57:15,987 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:57:15,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-29 03:57:15,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:57:15,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-29 03:57:15,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2023-11-29 03:57:16,084 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 83 [2023-11-29 03:57:16,084 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 89 transitions, 450 flow. Second operand has 13 states, 13 states have (on average 24.0) internal successors, (312), 13 states have internal predecessors, (312), 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 03:57:16,085 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:57:16,085 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 83 [2023-11-29 03:57:16,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:57:30,105 INFO L124 PetriNetUnfolderBase]: 63338/96435 cut-off events. [2023-11-29 03:57:30,105 INFO L125 PetriNetUnfolderBase]: For 84812/84812 co-relation queries the response was YES. [2023-11-29 03:57:30,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 268122 conditions, 96435 events. 63338/96435 cut-off events. For 84812/84812 co-relation queries the response was YES. Maximal size of possible extension queue 5339. Compared 877525 event pairs, 15045 based on Foata normal form. 2846/71074 useless extension candidates. Maximal degree in co-relation 268093. Up to 25131 conditions per place. [2023-11-29 03:57:30,903 INFO L140 encePairwiseOnDemand]: 69/83 looper letters, 218 selfloop transitions, 36 changer transitions 2/274 dead transitions. [2023-11-29 03:57:30,903 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 274 transitions, 1787 flow [2023-11-29 03:57:30,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 03:57:30,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-29 03:57:30,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 477 transitions. [2023-11-29 03:57:30,905 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4789156626506024 [2023-11-29 03:57:30,905 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 477 transitions. [2023-11-29 03:57:30,905 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 477 transitions. [2023-11-29 03:57:30,906 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:57:30,906 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 477 transitions. [2023-11-29 03:57:30,907 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 39.75) internal successors, (477), 12 states have internal predecessors, (477), 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 03:57:30,909 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 83.0) internal successors, (1079), 13 states have internal predecessors, (1079), 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 03:57:30,909 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 83.0) internal successors, (1079), 13 states have internal predecessors, (1079), 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 03:57:30,909 INFO L175 Difference]: Start difference. First operand has 101 places, 89 transitions, 450 flow. Second operand 12 states and 477 transitions. [2023-11-29 03:57:30,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 274 transitions, 1787 flow [2023-11-29 03:57:30,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 274 transitions, 1786 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 03:57:30,939 INFO L231 Difference]: Finished difference. Result has 114 places, 96 transitions, 581 flow [2023-11-29 03:57:30,939 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=449, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=581, PETRI_PLACES=114, PETRI_TRANSITIONS=96} [2023-11-29 03:57:30,939 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, 30 predicate places. [2023-11-29 03:57:30,939 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 96 transitions, 581 flow [2023-11-29 03:57:30,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 24.0) internal successors, (312), 13 states have internal predecessors, (312), 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 03:57:30,940 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:57:30,940 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2023-11-29 03:57:30,944 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c94535de-41d7-47ae-8a44-3cb94ccd9871/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 03:57:31,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c94535de-41d7-47ae-8a44-3cb94ccd9871/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-29 03:57:31,140 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-29 03:57:31,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:57:31,141 INFO L85 PathProgramCache]: Analyzing trace with hash -1890764322, now seen corresponding path program 2 times [2023-11-29 03:57:31,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:57:31,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069816756] [2023-11-29 03:57:31,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:57:31,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:57:31,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:57:31,286 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 03:57:31,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:57:31,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069816756] [2023-11-29 03:57:31,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069816756] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:57:31,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [458879387] [2023-11-29 03:57:31,287 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 03:57:31,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:57:31,287 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c94535de-41d7-47ae-8a44-3cb94ccd9871/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:57:31,288 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c94535de-41d7-47ae-8a44-3cb94ccd9871/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:57:31,288 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c94535de-41d7-47ae-8a44-3cb94ccd9871/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 03:57:31,403 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 03:57:31,403 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:57:31,404 INFO L262 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 03:57:31,404 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:57:31,441 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 03:57:31,441 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:57:31,468 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 03:57:31,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [458879387] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:57:31,468 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:57:31,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 12 [2023-11-29 03:57:31,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515677022] [2023-11-29 03:57:31,469 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:57:31,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 03:57:31,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:57:31,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 03:57:31,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2023-11-29 03:57:31,504 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 83 [2023-11-29 03:57:31,504 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 96 transitions, 581 flow. Second operand has 14 states, 14 states have (on average 23.142857142857142) internal successors, (324), 14 states have internal predecessors, (324), 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 03:57:31,505 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:57:31,505 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 83 [2023-11-29 03:57:31,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:57:44,566 INFO L124 PetriNetUnfolderBase]: 60973/86946 cut-off events. [2023-11-29 03:57:44,566 INFO L125 PetriNetUnfolderBase]: For 112444/112444 co-relation queries the response was YES. [2023-11-29 03:57:45,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 283877 conditions, 86946 events. 60973/86946 cut-off events. For 112444/112444 co-relation queries the response was YES. Maximal size of possible extension queue 4770. Compared 735361 event pairs, 54778 based on Foata normal form. 4/58645 useless extension candidates. Maximal degree in co-relation 283844. Up to 82384 conditions per place. [2023-11-29 03:57:45,382 INFO L140 encePairwiseOnDemand]: 74/83 looper letters, 48 selfloop transitions, 35 changer transitions 0/101 dead transitions. [2023-11-29 03:57:45,382 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 101 transitions, 787 flow [2023-11-29 03:57:45,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-29 03:57:45,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-11-29 03:57:45,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 601 transitions. [2023-11-29 03:57:45,385 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3017068273092369 [2023-11-29 03:57:45,385 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 601 transitions. [2023-11-29 03:57:45,385 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 601 transitions. [2023-11-29 03:57:45,385 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:57:45,385 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 601 transitions. [2023-11-29 03:57:45,387 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 25.041666666666668) internal successors, (601), 24 states have internal predecessors, (601), 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 03:57:45,389 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 83.0) internal successors, (2075), 25 states have internal predecessors, (2075), 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 03:57:45,389 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 83.0) internal successors, (2075), 25 states have internal predecessors, (2075), 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 03:57:45,389 INFO L175 Difference]: Start difference. First operand has 114 places, 96 transitions, 581 flow. Second operand 24 states and 601 transitions. [2023-11-29 03:57:45,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 101 transitions, 787 flow [2023-11-29 03:57:45,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 101 transitions, 759 flow, removed 7 selfloop flow, removed 3 redundant places. [2023-11-29 03:57:45,477 INFO L231 Difference]: Finished difference. Result has 135 places, 101 transitions, 676 flow [2023-11-29 03:57:45,477 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=544, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=676, PETRI_PLACES=135, PETRI_TRANSITIONS=101} [2023-11-29 03:57:45,478 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, 51 predicate places. [2023-11-29 03:57:45,478 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 101 transitions, 676 flow [2023-11-29 03:57:45,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 23.142857142857142) internal successors, (324), 14 states have internal predecessors, (324), 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 03:57:45,478 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:57:45,478 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 03:57:45,482 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c94535de-41d7-47ae-8a44-3cb94ccd9871/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 03:57:45,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c94535de-41d7-47ae-8a44-3cb94ccd9871/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-29 03:57:45,679 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread4Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-29 03:57:45,679 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:57:45,679 INFO L85 PathProgramCache]: Analyzing trace with hash 1926244873, now seen corresponding path program 1 times [2023-11-29 03:57:45,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:57:45,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547798650] [2023-11-29 03:57:45,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:57:45,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:57:45,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:57:45,903 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 03:57:45,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:57:45,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547798650] [2023-11-29 03:57:45,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547798650] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:57:45,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:57:45,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 03:57:45,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975822143] [2023-11-29 03:57:45,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:57:45,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:57:45,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:57:45,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:57:45,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:57:45,909 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 83 [2023-11-29 03:57:45,909 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 101 transitions, 676 flow. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:57:45,910 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:57:45,910 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 83 [2023-11-29 03:57:45,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:57:57,065 INFO L124 PetriNetUnfolderBase]: 53445/78288 cut-off events. [2023-11-29 03:57:57,065 INFO L125 PetriNetUnfolderBase]: For 79769/79769 co-relation queries the response was YES. [2023-11-29 03:57:57,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 243622 conditions, 78288 events. 53445/78288 cut-off events. For 79769/79769 co-relation queries the response was YES. Maximal size of possible extension queue 3878. Compared 621747 event pairs, 13985 based on Foata normal form. 564/54565 useless extension candidates. Maximal degree in co-relation 243587. Up to 58280 conditions per place. [2023-11-29 03:57:57,815 INFO L140 encePairwiseOnDemand]: 76/83 looper letters, 98 selfloop transitions, 3 changer transitions 2/122 dead transitions. [2023-11-29 03:57:57,815 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 122 transitions, 975 flow [2023-11-29 03:57:57,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:57:57,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 03:57:57,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 145 transitions. [2023-11-29 03:57:57,816 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5823293172690763 [2023-11-29 03:57:57,816 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 145 transitions. [2023-11-29 03:57:57,816 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 145 transitions. [2023-11-29 03:57:57,817 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:57:57,817 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 145 transitions. [2023-11-29 03:57:57,817 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 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 03:57:57,818 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 83.0) internal successors, (332), 4 states have internal predecessors, (332), 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 03:57:57,818 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 83.0) internal successors, (332), 4 states have internal predecessors, (332), 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 03:57:57,818 INFO L175 Difference]: Start difference. First operand has 135 places, 101 transitions, 676 flow. Second operand 3 states and 145 transitions. [2023-11-29 03:57:57,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 122 transitions, 975 flow [2023-11-29 03:57:57,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 122 transitions, 864 flow, removed 11 selfloop flow, removed 14 redundant places. [2023-11-29 03:57:57,874 INFO L231 Difference]: Finished difference. Result has 123 places, 96 transitions, 559 flow [2023-11-29 03:57:57,875 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=540, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=559, PETRI_PLACES=123, PETRI_TRANSITIONS=96} [2023-11-29 03:57:57,875 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, 39 predicate places. [2023-11-29 03:57:57,875 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 96 transitions, 559 flow [2023-11-29 03:57:57,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:57:57,875 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:57:57,875 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:57:57,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-29 03:57:57,875 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-29 03:57:57,875 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:57:57,876 INFO L85 PathProgramCache]: Analyzing trace with hash -1897723579, now seen corresponding path program 1 times [2023-11-29 03:57:57,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:57:57,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59744493] [2023-11-29 03:57:57,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:57:57,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:57:57,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:57:58,009 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 03:57:58,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:57:58,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59744493] [2023-11-29 03:57:58,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59744493] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:57:58,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:57:58,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 03:57:58,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235205256] [2023-11-29 03:57:58,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:57:58,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:57:58,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:57:58,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:57:58,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:57:58,011 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 83 [2023-11-29 03:57:58,011 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 96 transitions, 559 flow. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 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 03:57:58,012 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:57:58,012 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 83 [2023-11-29 03:57:58,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:58:13,893 INFO L124 PetriNetUnfolderBase]: 75280/105528 cut-off events. [2023-11-29 03:58:13,893 INFO L125 PetriNetUnfolderBase]: For 117903/117903 co-relation queries the response was YES. [2023-11-29 03:58:14,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 355145 conditions, 105528 events. 75280/105528 cut-off events. For 117903/117903 co-relation queries the response was YES. Maximal size of possible extension queue 4386. Compared 803236 event pairs, 18587 based on Foata normal form. 0/71665 useless extension candidates. Maximal degree in co-relation 355111. Up to 72599 conditions per place. [2023-11-29 03:58:15,124 INFO L140 encePairwiseOnDemand]: 76/83 looper letters, 104 selfloop transitions, 3 changer transitions 0/126 dead transitions. [2023-11-29 03:58:15,125 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 126 transitions, 943 flow [2023-11-29 03:58:15,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:58:15,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 03:58:15,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 144 transitions. [2023-11-29 03:58:15,126 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5783132530120482 [2023-11-29 03:58:15,126 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 144 transitions. [2023-11-29 03:58:15,126 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 144 transitions. [2023-11-29 03:58:15,126 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:58:15,126 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 144 transitions. [2023-11-29 03:58:15,127 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 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 03:58:15,127 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 83.0) internal successors, (332), 4 states have internal predecessors, (332), 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 03:58:15,128 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 83.0) internal successors, (332), 4 states have internal predecessors, (332), 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 03:58:15,128 INFO L175 Difference]: Start difference. First operand has 123 places, 96 transitions, 559 flow. Second operand 3 states and 144 transitions. [2023-11-29 03:58:15,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 126 transitions, 943 flow [2023-11-29 03:58:15,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 126 transitions, 914 flow, removed 8 selfloop flow, removed 3 redundant places. [2023-11-29 03:58:15,231 INFO L231 Difference]: Finished difference. Result has 123 places, 98 transitions, 574 flow [2023-11-29 03:58:15,231 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=541, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=574, PETRI_PLACES=123, PETRI_TRANSITIONS=98} [2023-11-29 03:58:15,231 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, 39 predicate places. [2023-11-29 03:58:15,231 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 98 transitions, 574 flow [2023-11-29 03:58:15,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 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 03:58:15,232 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:58:15,232 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:58:15,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-29 03:58:15,232 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-29 03:58:15,232 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:58:15,232 INFO L85 PathProgramCache]: Analyzing trace with hash -1897723583, now seen corresponding path program 1 times [2023-11-29 03:58:15,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:58:15,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285529360] [2023-11-29 03:58:15,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:58:15,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:58:15,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:58:15,738 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 03:58:15,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:58:15,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285529360] [2023-11-29 03:58:15,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285529360] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:58:15,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [884945896] [2023-11-29 03:58:15,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:58:15,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:58:15,739 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c94535de-41d7-47ae-8a44-3cb94ccd9871/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:58:15,740 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c94535de-41d7-47ae-8a44-3cb94ccd9871/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:58:15,742 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c94535de-41d7-47ae-8a44-3cb94ccd9871/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 03:58:15,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:58:15,906 INFO L262 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-29 03:58:15,908 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:58:15,964 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 23 treesize of output 1 [2023-11-29 03:58:16,292 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 03:58:16,292 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:58:16,520 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 20 treesize of output 18 [2023-11-29 03:58:16,526 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 26 treesize of output 20 [2023-11-29 03:58:16,564 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 03:58:16,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [884945896] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:58:16,564 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:58:16,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15 [2023-11-29 03:58:16,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913348755] [2023-11-29 03:58:16,565 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:58:16,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-29 03:58:16,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:58:16,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-29 03:58:16,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2023-11-29 03:58:16,879 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 83 [2023-11-29 03:58:16,880 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 98 transitions, 574 flow. Second operand has 17 states, 17 states have (on average 24.11764705882353) internal successors, (410), 17 states have internal predecessors, (410), 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 03:58:16,880 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:58:16,880 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 83 [2023-11-29 03:58:16,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:58:48,389 INFO L124 PetriNetUnfolderBase]: 135298/191077 cut-off events. [2023-11-29 03:58:48,389 INFO L125 PetriNetUnfolderBase]: For 280330/280330 co-relation queries the response was YES. [2023-11-29 03:58:49,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 648254 conditions, 191077 events. 135298/191077 cut-off events. For 280330/280330 co-relation queries the response was YES. Maximal size of possible extension queue 8309. Compared 1569845 event pairs, 30795 based on Foata normal form. 0/151523 useless extension candidates. Maximal degree in co-relation 648220. Up to 62672 conditions per place. [2023-11-29 03:58:50,334 INFO L140 encePairwiseOnDemand]: 70/83 looper letters, 193 selfloop transitions, 67 changer transitions 0/278 dead transitions. [2023-11-29 03:58:50,334 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 278 transitions, 2150 flow [2023-11-29 03:58:50,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-29 03:58:50,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-11-29 03:58:50,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 600 transitions. [2023-11-29 03:58:50,337 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3804692454026633 [2023-11-29 03:58:50,337 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 600 transitions. [2023-11-29 03:58:50,337 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 600 transitions. [2023-11-29 03:58:50,337 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:58:50,337 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 600 transitions. [2023-11-29 03:58:50,338 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 31.57894736842105) internal successors, (600), 19 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 03:58:50,340 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 83.0) internal successors, (1660), 20 states have internal predecessors, (1660), 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 03:58:50,341 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 83.0) internal successors, (1660), 20 states have internal predecessors, (1660), 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 03:58:50,341 INFO L175 Difference]: Start difference. First operand has 123 places, 98 transitions, 574 flow. Second operand 19 states and 600 transitions. [2023-11-29 03:58:50,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 278 transitions, 2150 flow [2023-11-29 03:58:51,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 278 transitions, 2141 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 03:58:51,342 INFO L231 Difference]: Finished difference. Result has 147 places, 139 transitions, 1143 flow [2023-11-29 03:58:51,342 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=571, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1143, PETRI_PLACES=147, PETRI_TRANSITIONS=139} [2023-11-29 03:58:51,342 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, 63 predicate places. [2023-11-29 03:58:51,342 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 139 transitions, 1143 flow [2023-11-29 03:58:51,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 24.11764705882353) internal successors, (410), 17 states have internal predecessors, (410), 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 03:58:51,343 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:58:51,343 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:58:51,348 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c94535de-41d7-47ae-8a44-3cb94ccd9871/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 03:58:51,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c94535de-41d7-47ae-8a44-3cb94ccd9871/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:58:51,543 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-29 03:58:51,544 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:58:51,544 INFO L85 PathProgramCache]: Analyzing trace with hash 231451156, now seen corresponding path program 1 times [2023-11-29 03:58:51,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:58:51,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000817383] [2023-11-29 03:58:51,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:58:51,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:58:51,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:58:52,046 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 03:58:52,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:58:52,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000817383] [2023-11-29 03:58:52,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000817383] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:58:52,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1943820103] [2023-11-29 03:58:52,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:58:52,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:58:52,047 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c94535de-41d7-47ae-8a44-3cb94ccd9871/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:58:52,048 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c94535de-41d7-47ae-8a44-3cb94ccd9871/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:58:52,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c94535de-41d7-47ae-8a44-3cb94ccd9871/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 03:58:52,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:58:52,172 INFO L262 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-29 03:58:52,174 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:58:52,202 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 23 treesize of output 1 [2023-11-29 03:58:52,478 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 03:58:52,479 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:58:52,806 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 18 treesize of output 16 [2023-11-29 03:58:52,811 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 22 treesize of output 16 [2023-11-29 03:58:52,854 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 03:58:52,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1943820103] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:58:52,854 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:58:52,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15 [2023-11-29 03:58:52,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830436356] [2023-11-29 03:58:52,855 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:58:52,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-29 03:58:52,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:58:52,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-29 03:58:52,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2023-11-29 03:58:53,050 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 83 [2023-11-29 03:58:53,051 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 139 transitions, 1143 flow. Second operand has 17 states, 17 states have (on average 24.11764705882353) internal successors, (410), 17 states have internal predecessors, (410), 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 03:58:53,051 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:58:53,051 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 83 [2023-11-29 03:58:53,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand