./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-commit-1.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version cf1a7837 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_80eead13-560a-4492-8daa-d49f26ed0b17/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80eead13-560a-4492-8daa-d49f26ed0b17/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80eead13-560a-4492-8daa-d49f26ed0b17/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80eead13-560a-4492-8daa-d49f26ed0b17/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-commit-1.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80eead13-560a-4492-8daa-d49f26ed0b17/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80eead13-560a-4492-8daa-d49f26ed0b17/bin/uautomizer-verify-uTZkv6EMXl --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 73c55a951ef2b92a665c2c32d76e33a5a03bdbde67ee3c8e6748faf493088c7e --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:13:08,431 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:13:08,559 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80eead13-560a-4492-8daa-d49f26ed0b17/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-12 02:13:08,567 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:13:08,568 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:13:08,610 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:13:08,611 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:13:08,611 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:13:08,613 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:13:08,618 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:13:08,619 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:13:08,620 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:13:08,620 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:13:08,622 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:13:08,623 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 02:13:08,623 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:13:08,624 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:13:08,624 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:13:08,624 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:13:08,625 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 02:13:08,626 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:13:08,626 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 02:13:08,627 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-12 02:13:08,627 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 02:13:08,628 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:13:08,628 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:13:08,629 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:13:08,630 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:13:08,630 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:13:08,631 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:13:08,632 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:13:08,633 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:13:08,633 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:13:08,633 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 02:13:08,633 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:13:08,634 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:13:08,634 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:13:08,634 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 02:13:08,634 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:13:08,635 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:13:08,635 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:13:08,635 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_80eead13-560a-4492-8daa-d49f26ed0b17/bin/uautomizer-verify-uTZkv6EMXl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80eead13-560a-4492-8daa-d49f26ed0b17/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 73c55a951ef2b92a665c2c32d76e33a5a03bdbde67ee3c8e6748faf493088c7e [2023-11-12 02:13:08,998 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:13:09,029 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:13:09,032 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:13:09,043 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:13:09,044 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:13:09,045 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80eead13-560a-4492-8daa-d49f26ed0b17/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/weaver/popl20-commit-1.wvr.c [2023-11-12 02:13:12,177 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:13:12,429 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:13:12,430 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80eead13-560a-4492-8daa-d49f26ed0b17/sv-benchmarks/c/weaver/popl20-commit-1.wvr.c [2023-11-12 02:13:12,440 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80eead13-560a-4492-8daa-d49f26ed0b17/bin/uautomizer-verify-uTZkv6EMXl/data/36158221b/64084491bb894b08be825bf81ac3ff15/FLAG5765543f3 [2023-11-12 02:13:12,464 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80eead13-560a-4492-8daa-d49f26ed0b17/bin/uautomizer-verify-uTZkv6EMXl/data/36158221b/64084491bb894b08be825bf81ac3ff15 [2023-11-12 02:13:12,471 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:13:12,473 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:13:12,478 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:13:12,478 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:13:12,484 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:13:12,485 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:13:12" (1/1) ... [2023-11-12 02:13:12,487 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4894c20b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:13:12, skipping insertion in model container [2023-11-12 02:13:12,487 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:13:12" (1/1) ... [2023-11-12 02:13:12,535 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:13:12,742 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:13:12,754 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:13:12,791 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:13:12,799 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:13:12,799 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:13:12,807 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:13:12,808 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:13:12 WrapperNode [2023-11-12 02:13:12,808 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:13:12,809 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:13:12,809 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:13:12,809 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:13:12,817 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:13:12" (1/1) ... [2023-11-12 02:13:12,829 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:13:12" (1/1) ... [2023-11-12 02:13:12,870 INFO L138 Inliner]: procedures = 25, calls = 69, calls flagged for inlining = 21, calls inlined = 25, statements flattened = 376 [2023-11-12 02:13:12,871 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:13:12,881 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:13:12,881 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:13:12,882 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:13:12,892 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:13:12" (1/1) ... [2023-11-12 02:13:12,892 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:13:12" (1/1) ... [2023-11-12 02:13:12,899 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:13:12" (1/1) ... [2023-11-12 02:13:12,912 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:13:12" (1/1) ... [2023-11-12 02:13:12,940 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:13:12" (1/1) ... [2023-11-12 02:13:12,956 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:13:12" (1/1) ... [2023-11-12 02:13:12,959 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:13:12" (1/1) ... [2023-11-12 02:13:12,962 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:13:12" (1/1) ... [2023-11-12 02:13:12,966 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:13:12,969 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:13:12,970 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:13:12,970 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:13:12,971 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:13:12" (1/1) ... [2023-11-12 02:13:12,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:13:13,013 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80eead13-560a-4492-8daa-d49f26ed0b17/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:13:13,042 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80eead13-560a-4492-8daa-d49f26ed0b17/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:13:13,084 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80eead13-560a-4492-8daa-d49f26ed0b17/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:13:13,097 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:13:13,098 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 02:13:13,098 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 02:13:13,098 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 02:13:13,098 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-12 02:13:13,098 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-12 02:13:13,098 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-12 02:13:13,099 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-12 02:13:13,099 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-12 02:13:13,099 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-12 02:13:13,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:13:13,099 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-12 02:13:13,101 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-12 02:13:13,102 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-12 02:13:13,102 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:13:13,102 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:13:13,102 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 02:13:13,104 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-12 02:13:13,256 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:13:13,258 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:13:13,888 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:13:14,316 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:13:14,317 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-11-12 02:13:14,321 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:13:14 BoogieIcfgContainer [2023-11-12 02:13:14,322 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:13:14,325 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:13:14,325 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:13:14,328 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:13:14,329 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:13:12" (1/3) ... [2023-11-12 02:13:14,330 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63a52446 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:13:14, skipping insertion in model container [2023-11-12 02:13:14,331 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:13:12" (2/3) ... [2023-11-12 02:13:14,331 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63a52446 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:13:14, skipping insertion in model container [2023-11-12 02:13:14,332 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:13:14" (3/3) ... [2023-11-12 02:13:14,333 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-commit-1.wvr.c [2023-11-12 02:13:14,343 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-12 02:13:14,355 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:13:14,355 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2023-11-12 02:13:14,355 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-12 02:13:14,512 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-12 02:13:14,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 291 places, 300 transitions, 621 flow [2023-11-12 02:13:14,707 INFO L124 PetriNetUnfolderBase]: 19/297 cut-off events. [2023-11-12 02:13:14,707 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-12 02:13:14,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 310 conditions, 297 events. 19/297 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 238 event pairs, 0 based on Foata normal form. 0/256 useless extension candidates. Maximal degree in co-relation 252. Up to 2 conditions per place. [2023-11-12 02:13:14,716 INFO L82 GeneralOperation]: Start removeDead. Operand has 291 places, 300 transitions, 621 flow [2023-11-12 02:13:14,724 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 265 places, 273 transitions, 561 flow [2023-11-12 02:13:14,728 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-12 02:13:14,739 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 265 places, 273 transitions, 561 flow [2023-11-12 02:13:14,745 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 265 places, 273 transitions, 561 flow [2023-11-12 02:13:14,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 265 places, 273 transitions, 561 flow [2023-11-12 02:13:14,851 INFO L124 PetriNetUnfolderBase]: 18/273 cut-off events. [2023-11-12 02:13:14,851 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-12 02:13:14,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 285 conditions, 273 events. 18/273 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 233 event pairs, 0 based on Foata normal form. 0/233 useless extension candidates. Maximal degree in co-relation 252. Up to 2 conditions per place. [2023-11-12 02:13:14,859 INFO L119 LiptonReduction]: Number of co-enabled transitions 2970 [2023-11-12 02:13:28,132 INFO L134 LiptonReduction]: Checked pairs total: 8439 [2023-11-12 02:13:28,132 INFO L136 LiptonReduction]: Total number of compositions: 289 [2023-11-12 02:13:28,148 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:13:28,155 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;@6601e0c3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:13:28,155 INFO L358 AbstractCegarLoop]: Starting to check reachability of 41 error locations. [2023-11-12 02:13:28,157 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-12 02:13:28,158 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-11-12 02:13:28,158 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:13:28,158 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:13:28,158 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-12 02:13:28,159 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2023-11-12 02:13:28,163 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:13:28,164 INFO L85 PathProgramCache]: Analyzing trace with hash 47141, now seen corresponding path program 1 times [2023-11-12 02:13:28,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:13:28,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552138104] [2023-11-12 02:13:28,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:13:28,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:13:28,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:13:28,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:13:28,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:13:28,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552138104] [2023-11-12 02:13:28,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552138104] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:13:28,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:13:28,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:13:28,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407128203] [2023-11-12 02:13:28,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:13:28,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:13:28,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:13:28,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:13:28,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:13:28,632 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 589 [2023-11-12 02:13:28,636 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 53 transitions, 121 flow. Second operand has 3 states, 3 states have (on average 241.66666666666666) internal successors, (725), 3 states have internal predecessors, (725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:13:28,637 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:13:28,637 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 589 [2023-11-12 02:13:28,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:13:29,531 INFO L124 PetriNetUnfolderBase]: 2775/3732 cut-off events. [2023-11-12 02:13:29,531 INFO L125 PetriNetUnfolderBase]: For 108/108 co-relation queries the response was YES. [2023-11-12 02:13:29,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7616 conditions, 3732 events. 2775/3732 cut-off events. For 108/108 co-relation queries the response was YES. Maximal size of possible extension queue 290. Compared 17225 event pairs, 1727 based on Foata normal form. 0/1783 useless extension candidates. Maximal degree in co-relation 6943. Up to 3691 conditions per place. [2023-11-12 02:13:29,575 INFO L140 encePairwiseOnDemand]: 568/589 looper letters, 41 selfloop transitions, 7 changer transitions 0/51 dead transitions. [2023-11-12 02:13:29,575 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 51 transitions, 213 flow [2023-11-12 02:13:29,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:13:29,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:13:29,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 785 transitions. [2023-11-12 02:13:29,600 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4442558007923033 [2023-11-12 02:13:29,601 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 785 transitions. [2023-11-12 02:13:29,602 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 785 transitions. [2023-11-12 02:13:29,607 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:13:29,610 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 785 transitions. [2023-11-12 02:13:29,617 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 261.6666666666667) internal successors, (785), 3 states have internal predecessors, (785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:13:29,630 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 589.0) internal successors, (2356), 4 states have internal predecessors, (2356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:13:29,632 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 589.0) internal successors, (2356), 4 states have internal predecessors, (2356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:13:29,634 INFO L175 Difference]: Start difference. First operand has 57 places, 53 transitions, 121 flow. Second operand 3 states and 785 transitions. [2023-11-12 02:13:29,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 51 transitions, 213 flow [2023-11-12 02:13:29,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 51 transitions, 204 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-12 02:13:29,657 INFO L231 Difference]: Finished difference. Result has 48 places, 51 transitions, 160 flow [2023-11-12 02:13:29,660 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=589, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=160, PETRI_PLACES=48, PETRI_TRANSITIONS=51} [2023-11-12 02:13:29,667 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, -9 predicate places. [2023-11-12 02:13:29,667 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 51 transitions, 160 flow [2023-11-12 02:13:29,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 241.66666666666666) internal successors, (725), 3 states have internal predecessors, (725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:13:29,668 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:13:29,669 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-12 02:13:29,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 02:13:29,670 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2023-11-12 02:13:29,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:13:29,672 INFO L85 PathProgramCache]: Analyzing trace with hash 1464182, now seen corresponding path program 1 times [2023-11-12 02:13:29,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:13:29,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302655307] [2023-11-12 02:13:29,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:13:29,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:13:29,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:13:29,824 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:13:29,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:13:29,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302655307] [2023-11-12 02:13:29,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302655307] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:13:29,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:13:29,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:13:29,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031618053] [2023-11-12 02:13:29,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:13:29,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:13:29,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:13:29,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:13:29,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:13:29,888 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 589 [2023-11-12 02:13:29,889 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 51 transitions, 160 flow. Second operand has 3 states, 3 states have (on average 242.0) internal successors, (726), 3 states have internal predecessors, (726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:13:29,890 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:13:29,890 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 589 [2023-11-12 02:13:29,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:13:30,672 INFO L124 PetriNetUnfolderBase]: 2775/3729 cut-off events. [2023-11-12 02:13:30,673 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2023-11-12 02:13:30,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7579 conditions, 3729 events. 2775/3729 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 290. Compared 17202 event pairs, 1727 based on Foata normal form. 0/1787 useless extension candidates. Maximal degree in co-relation 7520. Up to 3679 conditions per place. [2023-11-12 02:13:30,705 INFO L140 encePairwiseOnDemand]: 584/589 looper letters, 42 selfloop transitions, 3 changer transitions 0/48 dead transitions. [2023-11-12 02:13:30,706 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 48 transitions, 238 flow [2023-11-12 02:13:30,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:13:30,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:13:30,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 765 transitions. [2023-11-12 02:13:30,710 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.432937181663837 [2023-11-12 02:13:30,710 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 765 transitions. [2023-11-12 02:13:30,710 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 765 transitions. [2023-11-12 02:13:30,711 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:13:30,711 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 765 transitions. [2023-11-12 02:13:30,714 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 255.0) internal successors, (765), 3 states have internal predecessors, (765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:13:30,719 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 589.0) internal successors, (2356), 4 states have internal predecessors, (2356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:13:30,721 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 589.0) internal successors, (2356), 4 states have internal predecessors, (2356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:13:30,721 INFO L175 Difference]: Start difference. First operand has 48 places, 51 transitions, 160 flow. Second operand 3 states and 765 transitions. [2023-11-12 02:13:30,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 48 transitions, 238 flow [2023-11-12 02:13:30,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 48 transitions, 224 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:13:30,724 INFO L231 Difference]: Finished difference. Result has 45 places, 48 transitions, 140 flow [2023-11-12 02:13:30,724 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=589, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=140, PETRI_PLACES=45, PETRI_TRANSITIONS=48} [2023-11-12 02:13:30,725 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, -12 predicate places. [2023-11-12 02:13:30,725 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 48 transitions, 140 flow [2023-11-12 02:13:30,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 242.0) internal successors, (726), 3 states have internal predecessors, (726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:13:30,726 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:13:30,726 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-12 02:13:30,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 02:13:30,727 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2023-11-12 02:13:30,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:13:30,728 INFO L85 PathProgramCache]: Analyzing trace with hash 1464181, now seen corresponding path program 1 times [2023-11-12 02:13:30,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:13:30,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2760241] [2023-11-12 02:13:30,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:13:30,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:13:30,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:13:30,801 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:13:30,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:13:30,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2760241] [2023-11-12 02:13:30,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2760241] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:13:30,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [806785155] [2023-11-12 02:13:30,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:13:30,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:13:30,802 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80eead13-560a-4492-8daa-d49f26ed0b17/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:13:30,808 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80eead13-560a-4492-8daa-d49f26ed0b17/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:13:30,855 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80eead13-560a-4492-8daa-d49f26ed0b17/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 02:13:30,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:13:31,007 INFO L262 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 02:13:31,011 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:13:31,049 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:13:31,049 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:13:31,080 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:13:31,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [806785155] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:13:31,086 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:13:31,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-11-12 02:13:31,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30126616] [2023-11-12 02:13:31,087 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:13:31,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:13:31,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:13:31,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:13:31,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:13:31,199 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 589 [2023-11-12 02:13:31,202 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 48 transitions, 140 flow. Second operand has 7 states, 7 states have (on average 242.14285714285714) internal successors, (1695), 7 states have internal predecessors, (1695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:13:31,203 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:13:31,203 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 589 [2023-11-12 02:13:31,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:13:31,983 INFO L124 PetriNetUnfolderBase]: 2784/3747 cut-off events. [2023-11-12 02:13:31,983 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2023-11-12 02:13:31,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7632 conditions, 3747 events. 2784/3747 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 290. Compared 17286 event pairs, 1727 based on Foata normal form. 0/1797 useless extension candidates. Maximal degree in co-relation 7520. Up to 3691 conditions per place. [2023-11-12 02:13:32,053 INFO L140 encePairwiseOnDemand]: 579/589 looper letters, 38 selfloop transitions, 25 changer transitions 0/66 dead transitions. [2023-11-12 02:13:32,053 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 66 transitions, 344 flow [2023-11-12 02:13:32,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:13:32,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-12 02:13:32,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1518 transitions. [2023-11-12 02:13:32,060 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4295415959252971 [2023-11-12 02:13:32,060 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1518 transitions. [2023-11-12 02:13:32,060 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1518 transitions. [2023-11-12 02:13:32,062 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:13:32,062 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1518 transitions. [2023-11-12 02:13:32,067 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 253.0) internal successors, (1518), 6 states have internal predecessors, (1518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:13:32,076 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 589.0) internal successors, (4123), 7 states have internal predecessors, (4123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:13:32,079 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 589.0) internal successors, (4123), 7 states have internal predecessors, (4123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:13:32,080 INFO L175 Difference]: Start difference. First operand has 45 places, 48 transitions, 140 flow. Second operand 6 states and 1518 transitions. [2023-11-12 02:13:32,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 66 transitions, 344 flow [2023-11-12 02:13:32,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 66 transitions, 332 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:13:32,084 INFO L231 Difference]: Finished difference. Result has 51 places, 66 transitions, 309 flow [2023-11-12 02:13:32,085 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=589, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=309, PETRI_PLACES=51, PETRI_TRANSITIONS=66} [2023-11-12 02:13:32,087 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, -6 predicate places. [2023-11-12 02:13:32,087 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 66 transitions, 309 flow [2023-11-12 02:13:32,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 242.14285714285714) internal successors, (1695), 7 states have internal predecessors, (1695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:13:32,089 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:13:32,089 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-11-12 02:13:32,100 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80eead13-560a-4492-8daa-d49f26ed0b17/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-12 02:13:32,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80eead13-560a-4492-8daa-d49f26ed0b17/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:13:32,296 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2023-11-12 02:13:32,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:13:32,297 INFO L85 PathProgramCache]: Analyzing trace with hash 672564324, now seen corresponding path program 2 times [2023-11-12 02:13:32,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:13:32,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779420464] [2023-11-12 02:13:32,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:13:32,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:13:32,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:13:32,512 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:13:32,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:13:32,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779420464] [2023-11-12 02:13:32,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779420464] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:13:32,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [131224782] [2023-11-12 02:13:32,515 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-12 02:13:32,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:13:32,516 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80eead13-560a-4492-8daa-d49f26ed0b17/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:13:32,517 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80eead13-560a-4492-8daa-d49f26ed0b17/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:13:32,532 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80eead13-560a-4492-8daa-d49f26ed0b17/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-12 02:13:32,644 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-12 02:13:32,644 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-12 02:13:32,646 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-12 02:13:32,647 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:13:32,669 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-12 02:13:32,669 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:13:32,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [131224782] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:13:32,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 02:13:32,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-11-12 02:13:32,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895097691] [2023-11-12 02:13:32,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:13:32,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:13:32,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:13:32,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:13:32,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:13:32,712 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 589 [2023-11-12 02:13:32,713 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 66 transitions, 309 flow. Second operand has 3 states, 3 states have (on average 248.0) internal successors, (744), 3 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:13:32,714 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:13:32,714 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 589 [2023-11-12 02:13:32,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:13:33,496 INFO L124 PetriNetUnfolderBase]: 2784/3744 cut-off events. [2023-11-12 02:13:33,496 INFO L125 PetriNetUnfolderBase]: For 17/17 co-relation queries the response was YES. [2023-11-12 02:13:33,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7667 conditions, 3744 events. 2784/3744 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 17245 event pairs, 1727 based on Foata normal form. 3/1804 useless extension candidates. Maximal degree in co-relation 7591. Up to 3682 conditions per place. [2023-11-12 02:13:33,534 INFO L140 encePairwiseOnDemand]: 584/589 looper letters, 54 selfloop transitions, 6 changer transitions 0/63 dead transitions. [2023-11-12 02:13:33,534 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 63 transitions, 399 flow [2023-11-12 02:13:33,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:13:33,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:13:33,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 780 transitions. [2023-11-12 02:13:33,538 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44142614601018676 [2023-11-12 02:13:33,538 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 780 transitions. [2023-11-12 02:13:33,539 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 780 transitions. [2023-11-12 02:13:33,539 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:13:33,540 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 780 transitions. [2023-11-12 02:13:33,543 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 260.0) internal successors, (780), 3 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:13:33,548 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 589.0) internal successors, (2356), 4 states have internal predecessors, (2356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:13:33,550 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 589.0) internal successors, (2356), 4 states have internal predecessors, (2356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:13:33,550 INFO L175 Difference]: Start difference. First operand has 51 places, 66 transitions, 309 flow. Second operand 3 states and 780 transitions. [2023-11-12 02:13:33,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 63 transitions, 399 flow [2023-11-12 02:13:33,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 63 transitions, 314 flow, removed 16 selfloop flow, removed 5 redundant places. [2023-11-12 02:13:33,555 INFO L231 Difference]: Finished difference. Result has 45 places, 63 transitions, 206 flow [2023-11-12 02:13:33,555 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=589, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=206, PETRI_PLACES=45, PETRI_TRANSITIONS=63} [2023-11-12 02:13:33,556 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, -12 predicate places. [2023-11-12 02:13:33,556 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 63 transitions, 206 flow [2023-11-12 02:13:33,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 248.0) internal successors, (744), 3 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:13:33,557 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:13:33,558 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:13:33,569 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80eead13-560a-4492-8daa-d49f26ed0b17/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-12 02:13:33,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80eead13-560a-4492-8daa-d49f26ed0b17/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:13:33,764 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2023-11-12 02:13:33,764 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:13:33,764 INFO L85 PathProgramCache]: Analyzing trace with hash -124114405, now seen corresponding path program 1 times [2023-11-12 02:13:33,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:13:33,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034374238] [2023-11-12 02:13:33,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:13:33,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:13:33,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:13:33,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:13:33,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:13:33,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034374238] [2023-11-12 02:13:33,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034374238] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:13:33,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:13:33,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:13:33,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591256232] [2023-11-12 02:13:33,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:13:33,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:13:33,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:13:33,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:13:33,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:13:33,847 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 252 out of 589 [2023-11-12 02:13:33,849 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 63 transitions, 206 flow. Second operand has 3 states, 3 states have (on average 254.0) internal successors, (762), 3 states have internal predecessors, (762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:13:33,849 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:13:33,849 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 252 of 589 [2023-11-12 02:13:33,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:13:34,553 INFO L124 PetriNetUnfolderBase]: 2940/3969 cut-off events. [2023-11-12 02:13:34,554 INFO L125 PetriNetUnfolderBase]: For 38/38 co-relation queries the response was YES. [2023-11-12 02:13:34,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8091 conditions, 3969 events. 2940/3969 cut-off events. For 38/38 co-relation queries the response was YES. Maximal size of possible extension queue 283. Compared 18341 event pairs, 661 based on Foata normal form. 0/1965 useless extension candidates. Maximal degree in co-relation 7988. Up to 3643 conditions per place. [2023-11-12 02:13:34,584 INFO L140 encePairwiseOnDemand]: 584/589 looper letters, 73 selfloop transitions, 3 changer transitions 0/79 dead transitions. [2023-11-12 02:13:34,584 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 79 transitions, 394 flow [2023-11-12 02:13:34,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:13:34,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:13:34,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 810 transitions. [2023-11-12 02:13:34,588 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45840407470288624 [2023-11-12 02:13:34,588 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 810 transitions. [2023-11-12 02:13:34,589 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 810 transitions. [2023-11-12 02:13:34,589 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:13:34,589 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 810 transitions. [2023-11-12 02:13:34,592 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 270.0) internal successors, (810), 3 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:13:34,597 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 589.0) internal successors, (2356), 4 states have internal predecessors, (2356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:13:34,599 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 589.0) internal successors, (2356), 4 states have internal predecessors, (2356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:13:34,600 INFO L175 Difference]: Start difference. First operand has 45 places, 63 transitions, 206 flow. Second operand 3 states and 810 transitions. [2023-11-12 02:13:34,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 79 transitions, 394 flow [2023-11-12 02:13:34,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 79 transitions, 382 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:13:34,604 INFO L231 Difference]: Finished difference. Result has 46 places, 65 transitions, 215 flow [2023-11-12 02:13:34,604 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=589, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=215, PETRI_PLACES=46, PETRI_TRANSITIONS=65} [2023-11-12 02:13:34,605 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, -11 predicate places. [2023-11-12 02:13:34,605 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 65 transitions, 215 flow [2023-11-12 02:13:34,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 254.0) internal successors, (762), 3 states have internal predecessors, (762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:13:34,606 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:13:34,606 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:13:34,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 02:13:34,607 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2023-11-12 02:13:34,607 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:13:34,607 INFO L85 PathProgramCache]: Analyzing trace with hash 993045827, now seen corresponding path program 1 times [2023-11-12 02:13:34,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:13:34,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817755732] [2023-11-12 02:13:34,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:13:34,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:13:34,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:13:34,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:13:34,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:13:34,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817755732] [2023-11-12 02:13:34,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817755732] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:13:34,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:13:34,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:13:34,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908352033] [2023-11-12 02:13:34,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:13:34,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:13:34,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:13:34,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:13:34,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:13:34,691 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 252 out of 589 [2023-11-12 02:13:34,692 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 65 transitions, 215 flow. Second operand has 3 states, 3 states have (on average 254.66666666666666) internal successors, (764), 3 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:13:34,692 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:13:34,692 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 252 of 589 [2023-11-12 02:13:34,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:13:35,358 INFO L124 PetriNetUnfolderBase]: 2006/2823 cut-off events. [2023-11-12 02:13:35,358 INFO L125 PetriNetUnfolderBase]: For 218/218 co-relation queries the response was YES. [2023-11-12 02:13:35,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6123 conditions, 2823 events. 2006/2823 cut-off events. For 218/218 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 12435 event pairs, 625 based on Foata normal form. 0/1818 useless extension candidates. Maximal degree in co-relation 6024. Up to 2311 conditions per place. [2023-11-12 02:13:35,395 INFO L140 encePairwiseOnDemand]: 585/589 looper letters, 75 selfloop transitions, 2 changer transitions 0/80 dead transitions. [2023-11-12 02:13:35,395 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 80 transitions, 404 flow [2023-11-12 02:13:35,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:13:35,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:13:35,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 810 transitions. [2023-11-12 02:13:35,400 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45840407470288624 [2023-11-12 02:13:35,401 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 810 transitions. [2023-11-12 02:13:35,401 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 810 transitions. [2023-11-12 02:13:35,402 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:13:35,402 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 810 transitions. [2023-11-12 02:13:35,406 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 270.0) internal successors, (810), 3 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:13:35,411 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 589.0) internal successors, (2356), 4 states have internal predecessors, (2356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:13:35,413 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 589.0) internal successors, (2356), 4 states have internal predecessors, (2356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:13:35,413 INFO L175 Difference]: Start difference. First operand has 46 places, 65 transitions, 215 flow. Second operand 3 states and 810 transitions. [2023-11-12 02:13:35,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 80 transitions, 404 flow [2023-11-12 02:13:35,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 80 transitions, 402 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:13:35,423 INFO L231 Difference]: Finished difference. Result has 48 places, 65 transitions, 222 flow [2023-11-12 02:13:35,424 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=589, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=222, PETRI_PLACES=48, PETRI_TRANSITIONS=65} [2023-11-12 02:13:35,427 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, -9 predicate places. [2023-11-12 02:13:35,427 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 65 transitions, 222 flow [2023-11-12 02:13:35,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 254.66666666666666) internal successors, (764), 3 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:13:35,428 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:13:35,428 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:13:35,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-12 02:13:35,428 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2023-11-12 02:13:35,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:13:35,429 INFO L85 PathProgramCache]: Analyzing trace with hash 841260602, now seen corresponding path program 1 times [2023-11-12 02:13:35,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:13:35,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461706134] [2023-11-12 02:13:35,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:13:35,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:13:35,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:13:35,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:13:35,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:13:35,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461706134] [2023-11-12 02:13:35,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461706134] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:13:35,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:13:35,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:13:35,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741685839] [2023-11-12 02:13:35,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:13:35,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:13:35,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:13:35,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:13:35,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:13:35,759 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 236 out of 589 [2023-11-12 02:13:35,760 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 65 transitions, 222 flow. Second operand has 4 states, 4 states have (on average 238.5) internal successors, (954), 4 states have internal predecessors, (954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:13:35,760 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:13:35,760 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 236 of 589 [2023-11-12 02:13:35,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:13:36,345 INFO L124 PetriNetUnfolderBase]: 2052/2927 cut-off events. [2023-11-12 02:13:36,345 INFO L125 PetriNetUnfolderBase]: For 350/350 co-relation queries the response was YES. [2023-11-12 02:13:36,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6843 conditions, 2927 events. 2052/2927 cut-off events. For 350/350 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 13197 event pairs, 1520 based on Foata normal form. 14/2206 useless extension candidates. Maximal degree in co-relation 6510. Up to 2815 conditions per place. [2023-11-12 02:13:36,366 INFO L140 encePairwiseOnDemand]: 580/589 looper letters, 59 selfloop transitions, 2 changer transitions 34/98 dead transitions. [2023-11-12 02:13:36,367 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 98 transitions, 524 flow [2023-11-12 02:13:36,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:13:36,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-12 02:13:36,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1241 transitions. [2023-11-12 02:13:36,372 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4213921901528014 [2023-11-12 02:13:36,372 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1241 transitions. [2023-11-12 02:13:36,372 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1241 transitions. [2023-11-12 02:13:36,373 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:13:36,373 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1241 transitions. [2023-11-12 02:13:36,377 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 248.2) internal successors, (1241), 5 states have internal predecessors, (1241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:13:36,383 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 589.0) internal successors, (3534), 6 states have internal predecessors, (3534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:13:36,385 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 589.0) internal successors, (3534), 6 states have internal predecessors, (3534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:13:36,385 INFO L175 Difference]: Start difference. First operand has 48 places, 65 transitions, 222 flow. Second operand 5 states and 1241 transitions. [2023-11-12 02:13:36,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 98 transitions, 524 flow [2023-11-12 02:13:36,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 98 transitions, 522 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:13:36,389 INFO L231 Difference]: Finished difference. Result has 53 places, 64 transitions, 238 flow [2023-11-12 02:13:36,389 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=589, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=238, PETRI_PLACES=53, PETRI_TRANSITIONS=64} [2023-11-12 02:13:36,390 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, -4 predicate places. [2023-11-12 02:13:36,390 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 64 transitions, 238 flow [2023-11-12 02:13:36,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 238.5) internal successors, (954), 4 states have internal predecessors, (954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:13:36,390 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:13:36,391 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:13:36,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-12 02:13:36,391 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2023-11-12 02:13:36,391 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:13:36,391 INFO L85 PathProgramCache]: Analyzing trace with hash 1647225353, now seen corresponding path program 1 times [2023-11-12 02:13:36,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:13:36,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788927381] [2023-11-12 02:13:36,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:13:36,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:13:36,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:13:36,520 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:13:36,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:13:36,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788927381] [2023-11-12 02:13:36,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788927381] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:13:36,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [867148420] [2023-11-12 02:13:36,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:13:36,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:13:36,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80eead13-560a-4492-8daa-d49f26ed0b17/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:13:36,522 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80eead13-560a-4492-8daa-d49f26ed0b17/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:13:36,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80eead13-560a-4492-8daa-d49f26ed0b17/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-12 02:13:36,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:13:36,688 INFO L262 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 02:13:36,690 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:13:36,711 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-12 02:13:36,711 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:13:36,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [867148420] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:13:36,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 02:13:36,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2023-11-12 02:13:36,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238855182] [2023-11-12 02:13:36,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:13:36,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:13:36,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:13:36,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:13:36,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:13:36,718 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 589 [2023-11-12 02:13:36,719 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 64 transitions, 238 flow. Second operand has 3 states, 3 states have (on average 257.6666666666667) internal successors, (773), 3 states have internal predecessors, (773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:13:36,719 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:13:36,719 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 589 [2023-11-12 02:13:36,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:13:37,015 INFO L124 PetriNetUnfolderBase]: 1141/1620 cut-off events. [2023-11-12 02:13:37,016 INFO L125 PetriNetUnfolderBase]: For 356/356 co-relation queries the response was YES. [2023-11-12 02:13:37,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3857 conditions, 1620 events. 1141/1620 cut-off events. For 356/356 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 6687 event pairs, 791 based on Foata normal form. 182/1521 useless extension candidates. Maximal degree in co-relation 3839. Up to 1613 conditions per place. [2023-11-12 02:13:37,047 INFO L140 encePairwiseOnDemand]: 584/589 looper letters, 56 selfloop transitions, 1 changer transitions 0/60 dead transitions. [2023-11-12 02:13:37,047 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 60 transitions, 340 flow [2023-11-12 02:13:37,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:13:37,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:13:37,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 798 transitions. [2023-11-12 02:13:37,050 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45161290322580644 [2023-11-12 02:13:37,050 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 798 transitions. [2023-11-12 02:13:37,051 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 798 transitions. [2023-11-12 02:13:37,051 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:13:37,051 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 798 transitions. [2023-11-12 02:13:37,054 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 266.0) internal successors, (798), 3 states have internal predecessors, (798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:13:37,058 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 589.0) internal successors, (2356), 4 states have internal predecessors, (2356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:13:37,059 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 589.0) internal successors, (2356), 4 states have internal predecessors, (2356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:13:37,059 INFO L175 Difference]: Start difference. First operand has 53 places, 64 transitions, 238 flow. Second operand 3 states and 798 transitions. [2023-11-12 02:13:37,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 60 transitions, 340 flow [2023-11-12 02:13:37,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 60 transitions, 320 flow, removed 9 selfloop flow, removed 3 redundant places. [2023-11-12 02:13:37,062 INFO L231 Difference]: Finished difference. Result has 46 places, 60 transitions, 208 flow [2023-11-12 02:13:37,062 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=589, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=208, PETRI_PLACES=46, PETRI_TRANSITIONS=60} [2023-11-12 02:13:37,063 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, -11 predicate places. [2023-11-12 02:13:37,063 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 60 transitions, 208 flow [2023-11-12 02:13:37,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 257.6666666666667) internal successors, (773), 3 states have internal predecessors, (773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:13:37,064 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:13:37,064 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:13:37,075 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80eead13-560a-4492-8daa-d49f26ed0b17/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-12 02:13:37,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80eead13-560a-4492-8daa-d49f26ed0b17/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-12 02:13:37,271 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2023-11-12 02:13:37,271 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:13:37,271 INFO L85 PathProgramCache]: Analyzing trace with hash -475620491, now seen corresponding path program 1 times [2023-11-12 02:13:37,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:13:37,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228530598] [2023-11-12 02:13:37,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:13:37,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:13:37,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:13:37,369 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-12 02:13:37,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:13:37,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228530598] [2023-11-12 02:13:37,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228530598] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:13:37,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:13:37,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:13:37,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810177945] [2023-11-12 02:13:37,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:13:37,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:13:37,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:13:37,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:13:37,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:13:37,377 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 252 out of 589 [2023-11-12 02:13:37,379 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 60 transitions, 208 flow. Second operand has 3 states, 3 states have (on average 256.0) internal successors, (768), 3 states have internal predecessors, (768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:13:37,379 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:13:37,379 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 252 of 589 [2023-11-12 02:13:37,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:13:37,690 INFO L124 PetriNetUnfolderBase]: 1056/1499 cut-off events. [2023-11-12 02:13:37,690 INFO L125 PetriNetUnfolderBase]: For 301/301 co-relation queries the response was YES. [2023-11-12 02:13:37,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3575 conditions, 1499 events. 1056/1499 cut-off events. For 301/301 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 5907 event pairs, 314 based on Foata normal form. 52/1265 useless extension candidates. Maximal degree in co-relation 3562. Up to 1255 conditions per place. [2023-11-12 02:13:37,700 INFO L140 encePairwiseOnDemand]: 585/589 looper letters, 65 selfloop transitions, 2 changer transitions 6/76 dead transitions. [2023-11-12 02:13:37,700 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 76 transitions, 396 flow [2023-11-12 02:13:37,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:13:37,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:13:37,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 808 transitions. [2023-11-12 02:13:37,705 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4572722127900396 [2023-11-12 02:13:37,705 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 808 transitions. [2023-11-12 02:13:37,705 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 808 transitions. [2023-11-12 02:13:37,706 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:13:37,706 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 808 transitions. [2023-11-12 02:13:37,708 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 269.3333333333333) internal successors, (808), 3 states have internal predecessors, (808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:13:37,712 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 589.0) internal successors, (2356), 4 states have internal predecessors, (2356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:13:37,714 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 589.0) internal successors, (2356), 4 states have internal predecessors, (2356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:13:37,714 INFO L175 Difference]: Start difference. First operand has 46 places, 60 transitions, 208 flow. Second operand 3 states and 808 transitions. [2023-11-12 02:13:37,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 76 transitions, 396 flow [2023-11-12 02:13:37,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 76 transitions, 395 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:13:37,717 INFO L231 Difference]: Finished difference. Result has 48 places, 61 transitions, 221 flow [2023-11-12 02:13:37,718 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=589, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=221, PETRI_PLACES=48, PETRI_TRANSITIONS=61} [2023-11-12 02:13:37,719 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, -9 predicate places. [2023-11-12 02:13:37,719 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 61 transitions, 221 flow [2023-11-12 02:13:37,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 256.0) internal successors, (768), 3 states have internal predecessors, (768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:13:37,720 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:13:37,720 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:13:37,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-12 02:13:37,720 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2023-11-12 02:13:37,720 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:13:37,721 INFO L85 PathProgramCache]: Analyzing trace with hash -1804762942, now seen corresponding path program 1 times [2023-11-12 02:13:37,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:13:37,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995958973] [2023-11-12 02:13:37,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:13:37,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:13:37,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:13:37,875 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-12 02:13:37,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:13:37,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995958973] [2023-11-12 02:13:37,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995958973] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:13:37,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:13:37,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:13:37,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017886213] [2023-11-12 02:13:37,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:13:37,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:13:37,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:13:37,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:13:37,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:13:37,954 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 236 out of 589 [2023-11-12 02:13:37,955 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 61 transitions, 221 flow. Second operand has 4 states, 4 states have (on average 239.25) internal successors, (957), 4 states have internal predecessors, (957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:13:37,956 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:13:37,956 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 236 of 589 [2023-11-12 02:13:37,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:13:38,325 INFO L124 PetriNetUnfolderBase]: 1116/1625 cut-off events. [2023-11-12 02:13:38,325 INFO L125 PetriNetUnfolderBase]: For 392/392 co-relation queries the response was YES. [2023-11-12 02:13:38,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4075 conditions, 1625 events. 1116/1625 cut-off events. For 392/392 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 7020 event pairs, 771 based on Foata normal form. 8/1397 useless extension candidates. Maximal degree in co-relation 4060. Up to 1472 conditions per place. [2023-11-12 02:13:38,336 INFO L140 encePairwiseOnDemand]: 580/589 looper letters, 44 selfloop transitions, 13 changer transitions 16/76 dead transitions. [2023-11-12 02:13:38,336 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 76 transitions, 407 flow [2023-11-12 02:13:38,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:13:38,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-12 02:13:38,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1234 transitions. [2023-11-12 02:13:38,342 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41901528013582345 [2023-11-12 02:13:38,342 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1234 transitions. [2023-11-12 02:13:38,342 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1234 transitions. [2023-11-12 02:13:38,343 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:13:38,344 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1234 transitions. [2023-11-12 02:13:38,347 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 246.8) internal successors, (1234), 5 states have internal predecessors, (1234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:13:38,353 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 589.0) internal successors, (3534), 6 states have internal predecessors, (3534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:13:38,355 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 589.0) internal successors, (3534), 6 states have internal predecessors, (3534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:13:38,355 INFO L175 Difference]: Start difference. First operand has 48 places, 61 transitions, 221 flow. Second operand 5 states and 1234 transitions. [2023-11-12 02:13:38,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 76 transitions, 407 flow [2023-11-12 02:13:38,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 76 transitions, 405 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:13:38,358 INFO L231 Difference]: Finished difference. Result has 52 places, 60 transitions, 255 flow [2023-11-12 02:13:38,358 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=589, PETRI_DIFFERENCE_MINUEND_FLOW=219, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=255, PETRI_PLACES=52, PETRI_TRANSITIONS=60} [2023-11-12 02:13:38,359 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, -5 predicate places. [2023-11-12 02:13:38,359 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 60 transitions, 255 flow [2023-11-12 02:13:38,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 239.25) internal successors, (957), 4 states have internal predecessors, (957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:13:38,360 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:13:38,360 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:13:38,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-12 02:13:38,360 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2023-11-12 02:13:38,360 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:13:38,360 INFO L85 PathProgramCache]: Analyzing trace with hash -526514043, now seen corresponding path program 1 times [2023-11-12 02:13:38,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:13:38,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297361616] [2023-11-12 02:13:38,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:13:38,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:13:38,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:13:38,510 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-12 02:13:38,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:13:38,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297361616] [2023-11-12 02:13:38,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297361616] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:13:38,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [193148642] [2023-11-12 02:13:38,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:13:38,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:13:38,512 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80eead13-560a-4492-8daa-d49f26ed0b17/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:13:38,513 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80eead13-560a-4492-8daa-d49f26ed0b17/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:13:38,536 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80eead13-560a-4492-8daa-d49f26ed0b17/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-12 02:13:38,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:13:38,684 INFO L262 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 02:13:38,686 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:13:38,713 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-12 02:13:38,713 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:13:38,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [193148642] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:13:38,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 02:13:38,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-12 02:13:38,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002776107] [2023-11-12 02:13:38,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:13:38,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:13:38,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:13:38,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:13:38,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:13:38,720 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 589 [2023-11-12 02:13:38,721 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 60 transitions, 255 flow. Second operand has 3 states, 3 states have (on average 258.6666666666667) internal successors, (776), 3 states have internal predecessors, (776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:13:38,722 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:13:38,722 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 589 [2023-11-12 02:13:38,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:13:38,970 INFO L124 PetriNetUnfolderBase]: 728/1065 cut-off events. [2023-11-12 02:13:38,970 INFO L125 PetriNetUnfolderBase]: For 341/341 co-relation queries the response was YES. [2023-11-12 02:13:38,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2686 conditions, 1065 events. 728/1065 cut-off events. For 341/341 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 4167 event pairs, 501 based on Foata normal form. 36/1039 useless extension candidates. Maximal degree in co-relation 2669. Up to 1058 conditions per place. [2023-11-12 02:13:38,978 INFO L140 encePairwiseOnDemand]: 586/589 looper letters, 54 selfloop transitions, 1 changer transitions 0/58 dead transitions. [2023-11-12 02:13:38,978 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 58 transitions, 357 flow [2023-11-12 02:13:38,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:13:38,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:13:38,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 794 transitions. [2023-11-12 02:13:38,982 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4493491794001132 [2023-11-12 02:13:38,983 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 794 transitions. [2023-11-12 02:13:38,983 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 794 transitions. [2023-11-12 02:13:38,984 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:13:38,984 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 794 transitions. [2023-11-12 02:13:38,987 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 264.6666666666667) internal successors, (794), 3 states have internal predecessors, (794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:13:39,001 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 589.0) internal successors, (2356), 4 states have internal predecessors, (2356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:13:39,011 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 589.0) internal successors, (2356), 4 states have internal predecessors, (2356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:13:39,011 INFO L175 Difference]: Start difference. First operand has 52 places, 60 transitions, 255 flow. Second operand 3 states and 794 transitions. [2023-11-12 02:13:39,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 58 transitions, 357 flow [2023-11-12 02:13:39,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 58 transitions, 327 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-11-12 02:13:39,015 INFO L231 Difference]: Finished difference. Result has 49 places, 58 transitions, 219 flow [2023-11-12 02:13:39,015 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=589, PETRI_DIFFERENCE_MINUEND_FLOW=217, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=219, PETRI_PLACES=49, PETRI_TRANSITIONS=58} [2023-11-12 02:13:39,016 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, -8 predicate places. [2023-11-12 02:13:39,016 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 58 transitions, 219 flow [2023-11-12 02:13:39,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 258.6666666666667) internal successors, (776), 3 states have internal predecessors, (776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:13:39,017 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:13:39,017 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:13:39,028 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80eead13-560a-4492-8daa-d49f26ed0b17/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-12 02:13:39,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80eead13-560a-4492-8daa-d49f26ed0b17/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-12 02:13:39,218 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2023-11-12 02:13:39,218 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:13:39,218 INFO L85 PathProgramCache]: Analyzing trace with hash -1593579760, now seen corresponding path program 1 times [2023-11-12 02:13:39,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:13:39,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975700794] [2023-11-12 02:13:39,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:13:39,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:13:39,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:13:39,431 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-12 02:13:39,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:13:39,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975700794] [2023-11-12 02:13:39,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975700794] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:13:39,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:13:39,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:13:39,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224979653] [2023-11-12 02:13:39,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:13:39,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:13:39,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:13:39,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:13:39,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:13:39,525 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 236 out of 589 [2023-11-12 02:13:39,527 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 58 transitions, 219 flow. Second operand has 4 states, 4 states have (on average 240.0) internal successors, (960), 4 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:13:39,527 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:13:39,527 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 236 of 589 [2023-11-12 02:13:39,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:13:39,832 INFO L124 PetriNetUnfolderBase]: 816/1240 cut-off events. [2023-11-12 02:13:39,832 INFO L125 PetriNetUnfolderBase]: For 333/333 co-relation queries the response was YES. [2023-11-12 02:13:39,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3058 conditions, 1240 events. 816/1240 cut-off events. For 333/333 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 5122 event pairs, 578 based on Foata normal form. 16/1189 useless extension candidates. Maximal degree in co-relation 3042. Up to 1048 conditions per place. [2023-11-12 02:13:39,839 INFO L140 encePairwiseOnDemand]: 583/589 looper letters, 48 selfloop transitions, 6 changer transitions 29/86 dead transitions. [2023-11-12 02:13:39,839 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 86 transitions, 473 flow [2023-11-12 02:13:39,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:13:39,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-12 02:13:39,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 999 transitions. [2023-11-12 02:13:39,845 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42402376910016976 [2023-11-12 02:13:39,846 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 999 transitions. [2023-11-12 02:13:39,846 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 999 transitions. [2023-11-12 02:13:39,847 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:13:39,847 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 999 transitions. [2023-11-12 02:13:39,849 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 249.75) internal successors, (999), 4 states have internal predecessors, (999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:13:39,854 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 589.0) internal successors, (2945), 5 states have internal predecessors, (2945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:13:39,855 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 589.0) internal successors, (2945), 5 states have internal predecessors, (2945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:13:39,855 INFO L175 Difference]: Start difference. First operand has 49 places, 58 transitions, 219 flow. Second operand 4 states and 999 transitions. [2023-11-12 02:13:39,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 86 transitions, 473 flow [2023-11-12 02:13:39,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 86 transitions, 472 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:13:39,858 INFO L231 Difference]: Finished difference. Result has 52 places, 57 transitions, 235 flow [2023-11-12 02:13:39,858 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=589, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=235, PETRI_PLACES=52, PETRI_TRANSITIONS=57} [2023-11-12 02:13:39,858 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, -5 predicate places. [2023-11-12 02:13:39,859 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 57 transitions, 235 flow [2023-11-12 02:13:39,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 240.0) internal successors, (960), 4 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:13:39,859 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:13:39,859 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:13:39,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-12 02:13:39,860 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2023-11-12 02:13:39,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:13:39,860 INFO L85 PathProgramCache]: Analyzing trace with hash -1417912273, now seen corresponding path program 1 times [2023-11-12 02:13:39,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:13:39,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903994636] [2023-11-12 02:13:39,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:13:39,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:13:39,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:13:40,083 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-12 02:13:40,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:13:40,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903994636] [2023-11-12 02:13:40,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903994636] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:13:40,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1388190140] [2023-11-12 02:13:40,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:13:40,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:13:40,084 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80eead13-560a-4492-8daa-d49f26ed0b17/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:13:40,085 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80eead13-560a-4492-8daa-d49f26ed0b17/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:13:40,104 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80eead13-560a-4492-8daa-d49f26ed0b17/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-12 02:13:40,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:13:40,265 INFO L262 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 02:13:40,267 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:13:40,315 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-12 02:13:40,315 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:13:40,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1388190140] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:13:40,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 02:13:40,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2023-11-12 02:13:40,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093790528] [2023-11-12 02:13:40,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:13:40,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:13:40,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:13:40,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:13:40,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:13:40,324 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 252 out of 589 [2023-11-12 02:13:40,326 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 57 transitions, 235 flow. Second operand has 4 states, 4 states have (on average 256.25) internal successors, (1025), 4 states have internal predecessors, (1025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:13:40,326 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:13:40,326 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 252 of 589 [2023-11-12 02:13:40,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:13:40,762 INFO L124 PetriNetUnfolderBase]: 1352/2015 cut-off events. [2023-11-12 02:13:40,762 INFO L125 PetriNetUnfolderBase]: For 644/644 co-relation queries the response was YES. [2023-11-12 02:13:40,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5194 conditions, 2015 events. 1352/2015 cut-off events. For 644/644 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 8142 event pairs, 556 based on Foata normal form. 54/1933 useless extension candidates. Maximal degree in co-relation 5176. Up to 744 conditions per place. [2023-11-12 02:13:40,775 INFO L140 encePairwiseOnDemand]: 584/589 looper letters, 82 selfloop transitions, 8 changer transitions 0/93 dead transitions. [2023-11-12 02:13:40,776 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 93 transitions, 533 flow [2023-11-12 02:13:40,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:13:40,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-12 02:13:40,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1074 transitions. [2023-11-12 02:13:40,781 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45585738539898135 [2023-11-12 02:13:40,781 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1074 transitions. [2023-11-12 02:13:40,781 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1074 transitions. [2023-11-12 02:13:40,782 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:13:40,782 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1074 transitions. [2023-11-12 02:13:40,786 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 268.5) internal successors, (1074), 4 states have internal predecessors, (1074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:13:40,792 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 589.0) internal successors, (2945), 5 states have internal predecessors, (2945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:13:40,793 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 589.0) internal successors, (2945), 5 states have internal predecessors, (2945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:13:40,793 INFO L175 Difference]: Start difference. First operand has 52 places, 57 transitions, 235 flow. Second operand 4 states and 1074 transitions. [2023-11-12 02:13:40,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 93 transitions, 533 flow [2023-11-12 02:13:40,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 93 transitions, 500 flow, removed 7 selfloop flow, removed 4 redundant places. [2023-11-12 02:13:40,798 INFO L231 Difference]: Finished difference. Result has 53 places, 63 transitions, 273 flow [2023-11-12 02:13:40,798 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=589, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=273, PETRI_PLACES=53, PETRI_TRANSITIONS=63} [2023-11-12 02:13:40,800 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, -4 predicate places. [2023-11-12 02:13:40,800 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 63 transitions, 273 flow [2023-11-12 02:13:40,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 256.25) internal successors, (1025), 4 states have internal predecessors, (1025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:13:40,801 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:13:40,801 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:13:40,807 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80eead13-560a-4492-8daa-d49f26ed0b17/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-12 02:13:41,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80eead13-560a-4492-8daa-d49f26ed0b17/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-12 02:13:41,007 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2023-11-12 02:13:41,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:13:41,008 INFO L85 PathProgramCache]: Analyzing trace with hash 390609407, now seen corresponding path program 1 times [2023-11-12 02:13:41,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:13:41,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069777088] [2023-11-12 02:13:41,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:13:41,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:13:41,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:13:41,272 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-12 02:13:41,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:13:41,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069777088] [2023-11-12 02:13:41,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069777088] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:13:41,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1579617508] [2023-11-12 02:13:41,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:13:41,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:13:41,274 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80eead13-560a-4492-8daa-d49f26ed0b17/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:13:41,275 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80eead13-560a-4492-8daa-d49f26ed0b17/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:13:41,300 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80eead13-560a-4492-8daa-d49f26ed0b17/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-12 02:13:41,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:13:41,478 INFO L262 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-12 02:13:41,480 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:13:41,604 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-12 02:13:41,604 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:13:41,734 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-12 02:13:41,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1579617508] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:13:41,734 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:13:41,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-11-12 02:13:41,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97950952] [2023-11-12 02:13:41,735 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:13:41,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-12 02:13:41,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:13:41,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-12 02:13:41,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2023-11-12 02:13:42,051 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 589 [2023-11-12 02:13:42,055 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 63 transitions, 273 flow. Second operand has 12 states, 12 states have (on average 230.91666666666666) internal successors, (2771), 12 states have internal predecessors, (2771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:13:42,055 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:13:42,055 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 589 [2023-11-12 02:13:42,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:13:42,656 INFO L124 PetriNetUnfolderBase]: 1425/2170 cut-off events. [2023-11-12 02:13:42,657 INFO L125 PetriNetUnfolderBase]: For 1817/1817 co-relation queries the response was YES. [2023-11-12 02:13:42,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6249 conditions, 2170 events. 1425/2170 cut-off events. For 1817/1817 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 9017 event pairs, 1051 based on Foata normal form. 2/2032 useless extension candidates. Maximal degree in co-relation 6231. Up to 2006 conditions per place. [2023-11-12 02:13:42,669 INFO L140 encePairwiseOnDemand]: 583/589 looper letters, 56 selfloop transitions, 3 changer transitions 43/105 dead transitions. [2023-11-12 02:13:42,669 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 105 transitions, 622 flow [2023-11-12 02:13:42,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 02:13:42,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-12 02:13:42,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1658 transitions. [2023-11-12 02:13:42,677 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4021343681785108 [2023-11-12 02:13:42,677 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1658 transitions. [2023-11-12 02:13:42,677 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1658 transitions. [2023-11-12 02:13:42,679 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:13:42,679 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1658 transitions. [2023-11-12 02:13:42,683 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 236.85714285714286) internal successors, (1658), 7 states have internal predecessors, (1658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:13:42,692 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 589.0) internal successors, (4712), 8 states have internal predecessors, (4712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:13:42,693 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 589.0) internal successors, (4712), 8 states have internal predecessors, (4712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:13:42,693 INFO L175 Difference]: Start difference. First operand has 53 places, 63 transitions, 273 flow. Second operand 7 states and 1658 transitions. [2023-11-12 02:13:42,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 105 transitions, 622 flow [2023-11-12 02:13:42,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 105 transitions, 614 flow, removed 4 selfloop flow, removed 0 redundant places. [2023-11-12 02:13:42,698 INFO L231 Difference]: Finished difference. Result has 62 places, 62 transitions, 280 flow [2023-11-12 02:13:42,698 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=589, PETRI_DIFFERENCE_MINUEND_FLOW=267, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=280, PETRI_PLACES=62, PETRI_TRANSITIONS=62} [2023-11-12 02:13:42,699 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 5 predicate places. [2023-11-12 02:13:42,699 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 62 transitions, 280 flow [2023-11-12 02:13:42,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 230.91666666666666) internal successors, (2771), 12 states have internal predecessors, (2771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:13:42,700 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:13:42,700 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:13:42,711 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80eead13-560a-4492-8daa-d49f26ed0b17/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-12 02:13:42,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80eead13-560a-4492-8daa-d49f26ed0b17/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-12 02:13:42,906 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2023-11-12 02:13:42,906 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:13:42,907 INFO L85 PathProgramCache]: Analyzing trace with hash 534409576, now seen corresponding path program 2 times [2023-11-12 02:13:42,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:13:42,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754567527] [2023-11-12 02:13:42,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:13:42,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:13:42,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:13:43,156 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-12 02:13:43,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:13:43,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754567527] [2023-11-12 02:13:43,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754567527] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:13:43,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1303182996] [2023-11-12 02:13:43,157 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-12 02:13:43,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:13:43,157 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80eead13-560a-4492-8daa-d49f26ed0b17/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:13:43,161 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80eead13-560a-4492-8daa-d49f26ed0b17/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:13:43,170 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80eead13-560a-4492-8daa-d49f26ed0b17/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-12 02:13:43,352 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-12 02:13:43,352 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-12 02:13:43,354 INFO L262 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 02:13:43,356 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:13:43,386 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-12 02:13:43,387 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:13:43,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1303182996] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:13:43,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 02:13:43,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-12 02:13:43,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087774860] [2023-11-12 02:13:43,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:13:43,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:13:43,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:13:43,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:13:43,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:13:43,395 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 589 [2023-11-12 02:13:43,396 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 62 transitions, 280 flow. Second operand has 3 states, 3 states have (on average 260.3333333333333) internal successors, (781), 3 states have internal predecessors, (781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:13:43,396 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:13:43,396 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 589 [2023-11-12 02:13:43,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:13:43,651 INFO L124 PetriNetUnfolderBase]: 889/1348 cut-off events. [2023-11-12 02:13:43,651 INFO L125 PetriNetUnfolderBase]: For 1245/1245 co-relation queries the response was YES. [2023-11-12 02:13:43,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3952 conditions, 1348 events. 889/1348 cut-off events. For 1245/1245 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 5133 event pairs, 632 based on Foata normal form. 72/1420 useless extension candidates. Maximal degree in co-relation 3929. Up to 1341 conditions per place. [2023-11-12 02:13:43,657 INFO L140 encePairwiseOnDemand]: 586/589 looper letters, 0 selfloop transitions, 0 changer transitions 60/60 dead transitions. [2023-11-12 02:13:43,657 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 60 transitions, 388 flow [2023-11-12 02:13:43,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:13:43,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:13:43,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 792 transitions. [2023-11-12 02:13:43,661 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44821731748726656 [2023-11-12 02:13:43,662 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 792 transitions. [2023-11-12 02:13:43,662 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 792 transitions. [2023-11-12 02:13:43,663 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:13:43,663 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 792 transitions. [2023-11-12 02:13:43,665 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 264.0) internal successors, (792), 3 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:13:43,669 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 589.0) internal successors, (2356), 4 states have internal predecessors, (2356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:13:43,670 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 589.0) internal successors, (2356), 4 states have internal predecessors, (2356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:13:43,670 INFO L175 Difference]: Start difference. First operand has 62 places, 62 transitions, 280 flow. Second operand 3 states and 792 transitions. [2023-11-12 02:13:43,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 60 transitions, 388 flow [2023-11-12 02:13:43,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 60 transitions, 370 flow, removed 7 selfloop flow, removed 5 redundant places. [2023-11-12 02:13:43,674 INFO L231 Difference]: Finished difference. Result has 54 places, 0 transitions, 0 flow [2023-11-12 02:13:43,674 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=589, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=54, PETRI_TRANSITIONS=0} [2023-11-12 02:13:43,675 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, -3 predicate places. [2023-11-12 02:13:43,676 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 0 transitions, 0 flow [2023-11-12 02:13:43,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 260.3333333333333) internal successors, (781), 3 states have internal predecessors, (781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:13:43,678 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (40 of 41 remaining) [2023-11-12 02:13:43,679 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (39 of 41 remaining) [2023-11-12 02:13:43,680 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (38 of 41 remaining) [2023-11-12 02:13:43,680 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (37 of 41 remaining) [2023-11-12 02:13:43,680 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (36 of 41 remaining) [2023-11-12 02:13:43,680 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (35 of 41 remaining) [2023-11-12 02:13:43,680 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (34 of 41 remaining) [2023-11-12 02:13:43,680 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 41 remaining) [2023-11-12 02:13:43,681 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 41 remaining) [2023-11-12 02:13:43,681 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 41 remaining) [2023-11-12 02:13:43,681 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 41 remaining) [2023-11-12 02:13:43,681 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 41 remaining) [2023-11-12 02:13:43,681 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 41 remaining) [2023-11-12 02:13:43,682 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 41 remaining) [2023-11-12 02:13:43,682 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 41 remaining) [2023-11-12 02:13:43,682 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 41 remaining) [2023-11-12 02:13:43,682 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 41 remaining) [2023-11-12 02:13:43,682 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 41 remaining) [2023-11-12 02:13:43,682 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 41 remaining) [2023-11-12 02:13:43,683 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 41 remaining) [2023-11-12 02:13:43,683 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 41 remaining) [2023-11-12 02:13:43,683 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 41 remaining) [2023-11-12 02:13:43,683 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 41 remaining) [2023-11-12 02:13:43,683 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 41 remaining) [2023-11-12 02:13:43,683 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 41 remaining) [2023-11-12 02:13:43,684 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 41 remaining) [2023-11-12 02:13:43,684 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 41 remaining) [2023-11-12 02:13:43,685 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 41 remaining) [2023-11-12 02:13:43,685 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 41 remaining) [2023-11-12 02:13:43,685 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 41 remaining) [2023-11-12 02:13:43,685 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 41 remaining) [2023-11-12 02:13:43,685 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 41 remaining) [2023-11-12 02:13:43,686 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 41 remaining) [2023-11-12 02:13:43,686 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 41 remaining) [2023-11-12 02:13:43,686 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 41 remaining) [2023-11-12 02:13:43,686 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 41 remaining) [2023-11-12 02:13:43,686 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 41 remaining) [2023-11-12 02:13:43,686 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 41 remaining) [2023-11-12 02:13:43,687 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 41 remaining) [2023-11-12 02:13:43,687 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 41 remaining) [2023-11-12 02:13:43,687 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 41 remaining) [2023-11-12 02:13:43,698 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80eead13-560a-4492-8daa-d49f26ed0b17/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-12 02:13:43,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80eead13-560a-4492-8daa-d49f26ed0b17/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-12 02:13:43,894 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:13:43,901 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-12 02:13:43,901 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-11-12 02:13:43,904 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 02:13:43 BasicIcfg [2023-11-12 02:13:43,905 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-12 02:13:43,905 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-12 02:13:43,905 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-12 02:13:43,906 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-12 02:13:43,906 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:13:14" (3/4) ... [2023-11-12 02:13:43,908 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-12 02:13:43,912 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-11-12 02:13:43,912 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-11-12 02:13:43,912 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2023-11-12 02:13:43,929 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 27 nodes and edges [2023-11-12 02:13:43,930 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-12 02:13:43,930 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-12 02:13:43,931 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-12 02:13:44,047 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80eead13-560a-4492-8daa-d49f26ed0b17/bin/uautomizer-verify-uTZkv6EMXl/witness.graphml [2023-11-12 02:13:44,048 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80eead13-560a-4492-8daa-d49f26ed0b17/bin/uautomizer-verify-uTZkv6EMXl/witness.yml [2023-11-12 02:13:44,048 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-12 02:13:44,049 INFO L158 Benchmark]: Toolchain (without parser) took 31576.13ms. Allocated memory was 136.3MB in the beginning and 612.4MB in the end (delta: 476.1MB). Free memory was 91.7MB in the beginning and 319.8MB in the end (delta: -228.1MB). Peak memory consumption was 251.1MB. Max. memory is 16.1GB. [2023-11-12 02:13:44,049 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 111.1MB. Free memory is still 87.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 02:13:44,050 INFO L158 Benchmark]: CACSL2BoogieTranslator took 330.55ms. Allocated memory is still 136.3MB. Free memory was 91.3MB in the beginning and 78.7MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-12 02:13:44,050 INFO L158 Benchmark]: Boogie Procedure Inliner took 71.52ms. Allocated memory is still 136.3MB. Free memory was 78.7MB in the beginning and 76.0MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-12 02:13:44,050 INFO L158 Benchmark]: Boogie Preprocessor took 87.33ms. Allocated memory is still 136.3MB. Free memory was 76.0MB in the beginning and 73.5MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-12 02:13:44,051 INFO L158 Benchmark]: RCFGBuilder took 1352.44ms. Allocated memory is still 136.3MB. Free memory was 73.5MB in the beginning and 83.1MB in the end (delta: -9.6MB). Peak memory consumption was 22.4MB. Max. memory is 16.1GB. [2023-11-12 02:13:44,051 INFO L158 Benchmark]: TraceAbstraction took 29579.94ms. Allocated memory was 136.3MB in the beginning and 612.4MB in the end (delta: 476.1MB). Free memory was 82.2MB in the beginning and 326.1MB in the end (delta: -243.9MB). Peak memory consumption was 232.9MB. Max. memory is 16.1GB. [2023-11-12 02:13:44,052 INFO L158 Benchmark]: Witness Printer took 143.00ms. Allocated memory is still 612.4MB. Free memory was 326.1MB in the beginning and 319.8MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-12 02:13:44,055 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 111.1MB. Free memory is still 87.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 330.55ms. Allocated memory is still 136.3MB. Free memory was 91.3MB in the beginning and 78.7MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 71.52ms. Allocated memory is still 136.3MB. Free memory was 78.7MB in the beginning and 76.0MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 87.33ms. Allocated memory is still 136.3MB. Free memory was 76.0MB in the beginning and 73.5MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1352.44ms. Allocated memory is still 136.3MB. Free memory was 73.5MB in the beginning and 83.1MB in the end (delta: -9.6MB). Peak memory consumption was 22.4MB. Max. memory is 16.1GB. * TraceAbstraction took 29579.94ms. Allocated memory was 136.3MB in the beginning and 612.4MB in the end (delta: 476.1MB). Free memory was 82.2MB in the beginning and 326.1MB in the end (delta: -243.9MB). Peak memory consumption was 232.9MB. Max. memory is 16.1GB. * Witness Printer took 143.00ms. Allocated memory is still 612.4MB. Free memory was 326.1MB in the beginning and 319.8MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 13.4s, 265 PlacesBefore, 57 PlacesAfterwards, 273 TransitionsBefore, 53 TransitionsAfterwards, 2970 CoEnabledTransitionPairs, 7 FixpointIterations, 191 TrivialSequentialCompositions, 40 ConcurrentSequentialCompositions, 35 TrivialYvCompositions, 11 ConcurrentYvCompositions, 12 ChoiceCompositions, 289 TotalNumberOfCompositions, 8439 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4200, independent: 3984, independent conditional: 0, independent unconditional: 3984, dependent: 216, dependent conditional: 0, dependent unconditional: 216, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1496, independent: 1449, independent conditional: 0, independent unconditional: 1449, dependent: 47, dependent conditional: 0, dependent unconditional: 47, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 4200, independent: 2535, independent conditional: 0, independent unconditional: 2535, dependent: 169, dependent conditional: 0, dependent unconditional: 169, unknown: 1496, unknown conditional: 0, unknown unconditional: 1496] , Statistics on independence cache: Total cache size (in pairs): 208, Positive cache size: 189, Positive conditional cache size: 0, Positive unconditional cache size: 189, Negative cache size: 19, Negative conditional cache size: 0, Negative unconditional cache size: 19, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 55]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 55]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 61]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 61]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 67]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 67]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 73]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 73]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 85]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 85]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 91]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 91]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 103]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 103]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 109]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 109]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 158]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 158]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 158]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 158]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 158]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 158]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 333 locations, 41 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 29.3s, OverallIterations: 15, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 9.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 13.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 970 SdHoareTripleChecker+Valid, 2.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 614 mSDsluCounter, 181 SdHoareTripleChecker+Invalid, 1.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 103 mSDsCounter, 144 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2097 IncrementalHoareTripleChecker+Invalid, 2241 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 144 mSolverCounterUnsat, 78 mSDtfsCounter, 2097 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 164 GetRequests, 110 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=309occurred in iteration=3, InterpolantAutomatonStates: 58, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 2.5s InterpolantComputationTime, 280 NumberOfCodeBlocks, 272 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 281 ConstructedInterpolants, 0 QuantifiedInterpolants, 909 SizeOfPredicates, 4 NumberOfNonLiveVariables, 1667 ConjunctsInSsa, 34 ConjunctsInUnsatCore, 24 InterpolantComputations, 13 PerfectInterpolantSequences, 39/59 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 22 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-12 02:13:44,093 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80eead13-560a-4492-8daa-d49f26ed0b17/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE