./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-more-dec-subseq.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a507d66c-e13c-42ba-b228-06163571f4fd/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a507d66c-e13c-42ba-b228-06163571f4fd/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a507d66c-e13c-42ba-b228-06163571f4fd/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a507d66c-e13c-42ba-b228-06163571f4fd/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-dec-subseq.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a507d66c-e13c-42ba-b228-06163571f4fd/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a507d66c-e13c-42ba-b228-06163571f4fd/bin/uautomizer-verify-BQ2R08f2Ya --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0f0e249de6560bdff430500b6d1ad159bf4a19253ccf183d061fafc41fe4114b --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 04:19:11,389 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 04:19:11,474 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a507d66c-e13c-42ba-b228-06163571f4fd/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-29 04:19:11,479 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 04:19:11,479 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 04:19:11,503 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 04:19:11,503 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 04:19:11,504 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 04:19:11,505 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 04:19:11,505 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 04:19:11,506 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 04:19:11,506 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 04:19:11,507 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 04:19:11,507 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 04:19:11,508 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 04:19:11,509 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 04:19:11,509 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 04:19:11,510 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 04:19:11,510 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 04:19:11,510 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 04:19:11,511 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 04:19:11,511 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 04:19:11,512 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 04:19:11,512 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 04:19:11,512 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-29 04:19:11,513 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 04:19:11,513 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 04:19:11,514 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 04:19:11,514 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 04:19:11,514 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 04:19:11,515 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 04:19:11,515 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 04:19:11,515 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 04:19:11,516 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 04:19:11,516 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 04:19:11,516 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 04:19:11,516 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 04:19:11,516 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 04:19:11,517 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 04:19:11,517 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 04:19:11,517 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 04:19:11,517 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 04:19:11,517 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 04:19:11,518 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 04:19:11,518 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_a507d66c-e13c-42ba-b228-06163571f4fd/bin/uautomizer-verify-BQ2R08f2Ya/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a507d66c-e13c-42ba-b228-06163571f4fd/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0f0e249de6560bdff430500b6d1ad159bf4a19253ccf183d061fafc41fe4114b [2023-11-29 04:19:11,781 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 04:19:11,801 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 04:19:11,803 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 04:19:11,805 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 04:19:11,805 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 04:19:11,806 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a507d66c-e13c-42ba-b228-06163571f4fd/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/weaver/popl20-more-dec-subseq.wvr.c [2023-11-29 04:19:14,534 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 04:19:14,701 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 04:19:14,702 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a507d66c-e13c-42ba-b228-06163571f4fd/sv-benchmarks/c/weaver/popl20-more-dec-subseq.wvr.c [2023-11-29 04:19:14,710 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a507d66c-e13c-42ba-b228-06163571f4fd/bin/uautomizer-verify-BQ2R08f2Ya/data/644bbdd59/9940165327584cf493dc346d4cdff7fe/FLAG0ae1ca338 [2023-11-29 04:19:14,725 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a507d66c-e13c-42ba-b228-06163571f4fd/bin/uautomizer-verify-BQ2R08f2Ya/data/644bbdd59/9940165327584cf493dc346d4cdff7fe [2023-11-29 04:19:14,728 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 04:19:14,729 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 04:19:14,731 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 04:19:14,731 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 04:19:14,736 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 04:19:14,737 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 04:19:14" (1/1) ... [2023-11-29 04:19:14,738 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43e615ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:19:14, skipping insertion in model container [2023-11-29 04:19:14,738 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 04:19:14" (1/1) ... [2023-11-29 04:19:14,764 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 04:19:14,951 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 04:19:14,962 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 04:19:14,990 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 04:19:15,000 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 04:19:15,000 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 04:19:15,008 INFO L206 MainTranslator]: Completed translation [2023-11-29 04:19:15,008 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:19:15 WrapperNode [2023-11-29 04:19:15,008 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 04:19:15,009 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 04:19:15,010 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 04:19:15,010 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 04:19:15,017 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:19:15" (1/1) ... [2023-11-29 04:19:15,026 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:19:15" (1/1) ... [2023-11-29 04:19:15,057 INFO L138 Inliner]: procedures = 24, calls = 46, calls flagged for inlining = 12, calls inlined = 14, statements flattened = 211 [2023-11-29 04:19:15,058 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 04:19:15,058 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 04:19:15,058 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 04:19:15,059 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 04:19:15,070 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:19:15" (1/1) ... [2023-11-29 04:19:15,071 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:19:15" (1/1) ... [2023-11-29 04:19:15,074 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:19:15" (1/1) ... [2023-11-29 04:19:15,092 INFO L175 MemorySlicer]: Split 14 memory accesses to 4 slices as follows [2, 8, 2, 2]. 57 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 4 writes are split as follows [0, 2, 1, 1]. [2023-11-29 04:19:15,092 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:19:15" (1/1) ... [2023-11-29 04:19:15,093 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:19:15" (1/1) ... [2023-11-29 04:19:15,101 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:19:15" (1/1) ... [2023-11-29 04:19:15,106 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:19:15" (1/1) ... [2023-11-29 04:19:15,109 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:19:15" (1/1) ... [2023-11-29 04:19:15,111 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:19:15" (1/1) ... [2023-11-29 04:19:15,114 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 04:19:15,115 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 04:19:15,115 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 04:19:15,116 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 04:19:15,116 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:19:15" (1/1) ... [2023-11-29 04:19:15,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 04:19:15,132 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a507d66c-e13c-42ba-b228-06163571f4fd/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:19:15,142 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a507d66c-e13c-42ba-b228-06163571f4fd/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 04:19:15,143 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a507d66c-e13c-42ba-b228-06163571f4fd/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 04:19:15,169 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 04:19:15,169 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-29 04:19:15,169 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-29 04:19:15,169 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-29 04:19:15,169 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-29 04:19:15,169 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 04:19:15,169 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 04:19:15,170 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 04:19:15,170 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-29 04:19:15,170 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 04:19:15,170 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 04:19:15,170 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-29 04:19:15,170 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-29 04:19:15,171 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-29 04:19:15,171 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-29 04:19:15,171 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-29 04:19:15,171 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-29 04:19:15,171 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 04:19:15,171 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 04:19:15,172 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-29 04:19:15,172 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-29 04:19:15,172 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-29 04:19:15,172 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-29 04:19:15,172 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 04:19:15,174 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-29 04:19:15,295 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 04:19:15,297 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 04:19:15,586 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 04:19:15,845 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 04:19:15,845 INFO L309 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-29 04:19:15,846 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:19:15 BoogieIcfgContainer [2023-11-29 04:19:15,846 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 04:19:15,849 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 04:19:15,849 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 04:19:15,852 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 04:19:15,852 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 04:19:14" (1/3) ... [2023-11-29 04:19:15,853 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e93cd4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 04:19:15, skipping insertion in model container [2023-11-29 04:19:15,853 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:19:15" (2/3) ... [2023-11-29 04:19:15,853 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e93cd4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 04:19:15, skipping insertion in model container [2023-11-29 04:19:15,854 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:19:15" (3/3) ... [2023-11-29 04:19:15,855 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-dec-subseq.wvr.c [2023-11-29 04:19:15,864 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-29 04:19:15,875 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 04:19:15,875 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2023-11-29 04:19:15,876 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 04:19:15,927 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-29 04:19:15,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 46 places, 44 transitions, 102 flow [2023-11-29 04:19:15,993 INFO L124 PetriNetUnfolderBase]: 5/42 cut-off events. [2023-11-29 04:19:15,993 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-29 04:19:15,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51 conditions, 42 events. 5/42 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 104 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 29. Up to 2 conditions per place. [2023-11-29 04:19:15,997 INFO L82 GeneralOperation]: Start removeDead. Operand has 46 places, 44 transitions, 102 flow [2023-11-29 04:19:16,000 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 42 places, 40 transitions, 89 flow [2023-11-29 04:19:16,011 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 04:19:16,019 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;@6fba4109, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 04:19:16,019 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2023-11-29 04:19:16,024 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 04:19:16,024 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2023-11-29 04:19:16,024 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 04:19:16,024 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:19:16,025 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-29 04:19:16,026 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-29 04:19:16,031 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:19:16,031 INFO L85 PathProgramCache]: Analyzing trace with hash 612006, now seen corresponding path program 1 times [2023-11-29 04:19:16,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:19:16,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591811296] [2023-11-29 04:19:16,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:19:16,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:19:16,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:19:16,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:19:16,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:19:16,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591811296] [2023-11-29 04:19:16,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591811296] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:19:16,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:19:16,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 04:19:16,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387691178] [2023-11-29 04:19:16,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:19:16,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:19:16,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:19:16,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:19:16,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:19:16,367 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2023-11-29 04:19:16,369 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 40 transitions, 89 flow. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:16,369 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:19:16,369 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2023-11-29 04:19:16,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:19:16,561 INFO L124 PetriNetUnfolderBase]: 245/439 cut-off events. [2023-11-29 04:19:16,561 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2023-11-29 04:19:16,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 854 conditions, 439 events. 245/439 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 1955 event pairs, 146 based on Foata normal form. 2/295 useless extension candidates. Maximal degree in co-relation 751. Up to 380 conditions per place. [2023-11-29 04:19:16,568 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 30 selfloop transitions, 7 changer transitions 0/44 dead transitions. [2023-11-29 04:19:16,568 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 44 transitions, 171 flow [2023-11-29 04:19:16,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:19:16,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 04:19:16,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 79 transitions. [2023-11-29 04:19:16,578 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44886363636363635 [2023-11-29 04:19:16,579 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 79 transitions. [2023-11-29 04:19:16,580 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 79 transitions. [2023-11-29 04:19:16,581 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:19:16,583 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 79 transitions. [2023-11-29 04:19:16,584 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:16,588 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 44.0) internal successors, (220), 5 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:16,588 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 44.0) internal successors, (220), 5 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:16,590 INFO L175 Difference]: Start difference. First operand has 42 places, 40 transitions, 89 flow. Second operand 4 states and 79 transitions. [2023-11-29 04:19:16,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 44 transitions, 171 flow [2023-11-29 04:19:16,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 44 transitions, 166 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-29 04:19:16,597 INFO L231 Difference]: Finished difference. Result has 43 places, 44 transitions, 140 flow [2023-11-29 04:19:16,599 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=140, PETRI_PLACES=43, PETRI_TRANSITIONS=44} [2023-11-29 04:19:16,603 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 1 predicate places. [2023-11-29 04:19:16,603 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 44 transitions, 140 flow [2023-11-29 04:19:16,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:16,603 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:19:16,604 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-29 04:19:16,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 04:19:16,604 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-29 04:19:16,605 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:19:16,605 INFO L85 PathProgramCache]: Analyzing trace with hash 1052999153, now seen corresponding path program 1 times [2023-11-29 04:19:16,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:19:16,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315964202] [2023-11-29 04:19:16,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:19:16,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:19:16,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:19:16,733 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:19:16,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:19:16,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315964202] [2023-11-29 04:19:16,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315964202] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:19:16,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1155491498] [2023-11-29 04:19:16,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:19:16,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:19:16,735 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a507d66c-e13c-42ba-b228-06163571f4fd/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:19:16,737 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a507d66c-e13c-42ba-b228-06163571f4fd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:19:16,741 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a507d66c-e13c-42ba-b228-06163571f4fd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 04:19:16,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:19:16,833 INFO L262 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 04:19:16,837 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:19:16,879 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:19:16,879 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:19:16,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1155491498] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:19:16,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:19:16,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-11-29 04:19:16,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998716030] [2023-11-29 04:19:16,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:19:16,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 04:19:16,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:19:16,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 04:19:16,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-29 04:19:16,901 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2023-11-29 04:19:16,902 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 44 transitions, 140 flow. Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:16,902 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:19:16,902 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2023-11-29 04:19:16,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:19:17,102 INFO L124 PetriNetUnfolderBase]: 245/437 cut-off events. [2023-11-29 04:19:17,102 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2023-11-29 04:19:17,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 867 conditions, 437 events. 245/437 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 1919 event pairs, 146 based on Foata normal form. 2/296 useless extension candidates. Maximal degree in co-relation 817. Up to 370 conditions per place. [2023-11-29 04:19:17,108 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 23 selfloop transitions, 12 changer transitions 0/42 dead transitions. [2023-11-29 04:19:17,108 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 42 transitions, 202 flow [2023-11-29 04:19:17,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 04:19:17,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 04:19:17,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 91 transitions. [2023-11-29 04:19:17,110 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3446969696969697 [2023-11-29 04:19:17,110 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 91 transitions. [2023-11-29 04:19:17,110 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 91 transitions. [2023-11-29 04:19:17,111 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:19:17,111 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 91 transitions. [2023-11-29 04:19:17,112 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:17,113 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 44.0) internal successors, (308), 7 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:17,113 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 44.0) internal successors, (308), 7 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:17,114 INFO L175 Difference]: Start difference. First operand has 43 places, 44 transitions, 140 flow. Second operand 6 states and 91 transitions. [2023-11-29 04:19:17,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 42 transitions, 202 flow [2023-11-29 04:19:17,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 42 transitions, 202 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 04:19:17,116 INFO L231 Difference]: Finished difference. Result has 46 places, 42 transitions, 156 flow [2023-11-29 04:19:17,117 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=156, PETRI_PLACES=46, PETRI_TRANSITIONS=42} [2023-11-29 04:19:17,117 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 4 predicate places. [2023-11-29 04:19:17,118 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 42 transitions, 156 flow [2023-11-29 04:19:17,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:17,118 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:19:17,118 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2023-11-29 04:19:17,125 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a507d66c-e13c-42ba-b228-06163571f4fd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 04:19:17,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a507d66c-e13c-42ba-b228-06163571f4fd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-11-29 04:19:17,321 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-29 04:19:17,321 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:19:17,321 INFO L85 PathProgramCache]: Analyzing trace with hash -1716764023, now seen corresponding path program 1 times [2023-11-29 04:19:17,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:19:17,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529258829] [2023-11-29 04:19:17,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:19:17,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:19:17,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:19:17,416 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:19:17,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:19:17,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529258829] [2023-11-29 04:19:17,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529258829] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:19:17,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [808469823] [2023-11-29 04:19:17,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:19:17,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:19:17,417 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a507d66c-e13c-42ba-b228-06163571f4fd/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:19:17,419 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a507d66c-e13c-42ba-b228-06163571f4fd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:19:17,421 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a507d66c-e13c-42ba-b228-06163571f4fd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 04:19:17,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:19:17,504 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 04:19:17,506 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:19:17,535 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:19:17,535 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:19:17,578 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:19:17,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [808469823] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:19:17,579 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:19:17,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2023-11-29 04:19:17,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288166420] [2023-11-29 04:19:17,579 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:19:17,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 04:19:17,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:19:17,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 04:19:17,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-11-29 04:19:17,615 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2023-11-29 04:19:17,616 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 42 transitions, 156 flow. Second operand has 12 states, 12 states have (on average 10.083333333333334) internal successors, (121), 12 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:17,616 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:19:17,616 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2023-11-29 04:19:17,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:19:17,853 INFO L124 PetriNetUnfolderBase]: 251/461 cut-off events. [2023-11-29 04:19:17,853 INFO L125 PetriNetUnfolderBase]: For 52/52 co-relation queries the response was YES. [2023-11-29 04:19:17,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 961 conditions, 461 events. 251/461 cut-off events. For 52/52 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 2120 event pairs, 146 based on Foata normal form. 6/323 useless extension candidates. Maximal degree in co-relation 819. Up to 381 conditions per place. [2023-11-29 04:19:17,859 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 28 selfloop transitions, 25 changer transitions 0/60 dead transitions. [2023-11-29 04:19:17,859 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 60 transitions, 376 flow [2023-11-29 04:19:17,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 04:19:17,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 04:19:17,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 149 transitions. [2023-11-29 04:19:17,862 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3386363636363636 [2023-11-29 04:19:17,862 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 149 transitions. [2023-11-29 04:19:17,862 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 149 transitions. [2023-11-29 04:19:17,863 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:19:17,863 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 149 transitions. [2023-11-29 04:19:17,865 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 14.9) internal successors, (149), 10 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:17,867 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 44.0) internal successors, (484), 11 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:17,867 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 44.0) internal successors, (484), 11 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:17,867 INFO L175 Difference]: Start difference. First operand has 46 places, 42 transitions, 156 flow. Second operand 10 states and 149 transitions. [2023-11-29 04:19:17,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 60 transitions, 376 flow [2023-11-29 04:19:17,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 60 transitions, 318 flow, removed 12 selfloop flow, removed 5 redundant places. [2023-11-29 04:19:17,873 INFO L231 Difference]: Finished difference. Result has 53 places, 60 transitions, 296 flow [2023-11-29 04:19:17,873 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=296, PETRI_PLACES=53, PETRI_TRANSITIONS=60} [2023-11-29 04:19:17,874 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 11 predicate places. [2023-11-29 04:19:17,874 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 60 transitions, 296 flow [2023-11-29 04:19:17,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.083333333333334) internal successors, (121), 12 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:17,875 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:19:17,875 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:19:17,881 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a507d66c-e13c-42ba-b228-06163571f4fd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 04:19:18,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a507d66c-e13c-42ba-b228-06163571f4fd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:19:18,076 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-29 04:19:18,076 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:19:18,077 INFO L85 PathProgramCache]: Analyzing trace with hash -982014068, now seen corresponding path program 1 times [2023-11-29 04:19:18,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:19:18,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077113283] [2023-11-29 04:19:18,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:19:18,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:19:18,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:19:18,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:19:18,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:19:18,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077113283] [2023-11-29 04:19:18,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077113283] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:19:18,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:19:18,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 04:19:18,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101386181] [2023-11-29 04:19:18,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:19:18,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:19:18,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:19:18,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:19:18,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:19:18,245 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 44 [2023-11-29 04:19:18,246 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 60 transitions, 296 flow. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:18,246 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:19:18,246 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 44 [2023-11-29 04:19:18,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:19:18,413 INFO L124 PetriNetUnfolderBase]: 310/598 cut-off events. [2023-11-29 04:19:18,414 INFO L125 PetriNetUnfolderBase]: For 113/113 co-relation queries the response was YES. [2023-11-29 04:19:18,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1284 conditions, 598 events. 310/598 cut-off events. For 113/113 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 2909 event pairs, 190 based on Foata normal form. 9/436 useless extension candidates. Maximal degree in co-relation 1188. Up to 396 conditions per place. [2023-11-29 04:19:18,419 INFO L140 encePairwiseOnDemand]: 37/44 looper letters, 73 selfloop transitions, 3 changer transitions 4/89 dead transitions. [2023-11-29 04:19:18,419 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 89 transitions, 591 flow [2023-11-29 04:19:18,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:19:18,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 04:19:18,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 103 transitions. [2023-11-29 04:19:18,421 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5852272727272727 [2023-11-29 04:19:18,421 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 103 transitions. [2023-11-29 04:19:18,421 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 103 transitions. [2023-11-29 04:19:18,421 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:19:18,421 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 103 transitions. [2023-11-29 04:19:18,422 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:18,423 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 44.0) internal successors, (220), 5 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:18,424 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 44.0) internal successors, (220), 5 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:18,424 INFO L175 Difference]: Start difference. First operand has 53 places, 60 transitions, 296 flow. Second operand 4 states and 103 transitions. [2023-11-29 04:19:18,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 89 transitions, 591 flow [2023-11-29 04:19:18,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 89 transitions, 557 flow, removed 9 selfloop flow, removed 2 redundant places. [2023-11-29 04:19:18,431 INFO L231 Difference]: Finished difference. Result has 55 places, 60 transitions, 287 flow [2023-11-29 04:19:18,431 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=272, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=287, PETRI_PLACES=55, PETRI_TRANSITIONS=60} [2023-11-29 04:19:18,432 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 13 predicate places. [2023-11-29 04:19:18,432 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 60 transitions, 287 flow [2023-11-29 04:19:18,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:18,433 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:19:18,433 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:19:18,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 04:19:18,434 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-29 04:19:18,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:19:18,434 INFO L85 PathProgramCache]: Analyzing trace with hash -982014034, now seen corresponding path program 1 times [2023-11-29 04:19:18,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:19:18,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146914001] [2023-11-29 04:19:18,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:19:18,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:19:18,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:19:18,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:19:18,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:19:18,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146914001] [2023-11-29 04:19:18,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146914001] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:19:18,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:19:18,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 04:19:18,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221790357] [2023-11-29 04:19:18,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:19:18,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:19:18,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:19:18,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:19:18,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:19:18,491 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 44 [2023-11-29 04:19:18,491 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 60 transitions, 287 flow. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:18,491 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:19:18,492 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 44 [2023-11-29 04:19:18,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:19:18,664 INFO L124 PetriNetUnfolderBase]: 492/884 cut-off events. [2023-11-29 04:19:18,665 INFO L125 PetriNetUnfolderBase]: For 140/196 co-relation queries the response was YES. [2023-11-29 04:19:18,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2058 conditions, 884 events. 492/884 cut-off events. For 140/196 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 4751 event pairs, 150 based on Foata normal form. 0/624 useless extension candidates. Maximal degree in co-relation 1964. Up to 417 conditions per place. [2023-11-29 04:19:18,670 INFO L140 encePairwiseOnDemand]: 40/44 looper letters, 66 selfloop transitions, 3 changer transitions 0/78 dead transitions. [2023-11-29 04:19:18,671 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 78 transitions, 472 flow [2023-11-29 04:19:18,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:19:18,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 04:19:18,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 85 transitions. [2023-11-29 04:19:18,672 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6439393939393939 [2023-11-29 04:19:18,672 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 85 transitions. [2023-11-29 04:19:18,672 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 85 transitions. [2023-11-29 04:19:18,672 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:19:18,673 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 85 transitions. [2023-11-29 04:19:18,673 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:18,674 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 44.0) internal successors, (176), 4 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:18,674 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 44.0) internal successors, (176), 4 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:18,675 INFO L175 Difference]: Start difference. First operand has 55 places, 60 transitions, 287 flow. Second operand 3 states and 85 transitions. [2023-11-29 04:19:18,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 78 transitions, 472 flow [2023-11-29 04:19:18,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 78 transitions, 468 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-29 04:19:18,680 INFO L231 Difference]: Finished difference. Result has 58 places, 62 transitions, 305 flow [2023-11-29 04:19:18,681 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=283, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=305, PETRI_PLACES=58, PETRI_TRANSITIONS=62} [2023-11-29 04:19:18,681 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 16 predicate places. [2023-11-29 04:19:18,682 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 62 transitions, 305 flow [2023-11-29 04:19:18,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:18,682 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:19:18,682 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:19:18,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 04:19:18,683 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-29 04:19:18,683 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:19:18,683 INFO L85 PathProgramCache]: Analyzing trace with hash -982014035, now seen corresponding path program 1 times [2023-11-29 04:19:18,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:19:18,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383569986] [2023-11-29 04:19:18,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:19:18,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:19:18,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:19:18,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:19:18,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:19:18,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383569986] [2023-11-29 04:19:18,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383569986] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:19:18,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:19:18,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 04:19:18,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496235187] [2023-11-29 04:19:18,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:19:18,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:19:18,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:19:18,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:19:18,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:19:18,736 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 44 [2023-11-29 04:19:18,736 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 62 transitions, 305 flow. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:18,737 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:19:18,737 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 44 [2023-11-29 04:19:18,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:19:18,861 INFO L124 PetriNetUnfolderBase]: 447/853 cut-off events. [2023-11-29 04:19:18,862 INFO L125 PetriNetUnfolderBase]: For 192/248 co-relation queries the response was YES. [2023-11-29 04:19:18,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2025 conditions, 853 events. 447/853 cut-off events. For 192/248 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 4736 event pairs, 295 based on Foata normal form. 36/672 useless extension candidates. Maximal degree in co-relation 1930. Up to 750 conditions per place. [2023-11-29 04:19:18,867 INFO L140 encePairwiseOnDemand]: 42/44 looper letters, 50 selfloop transitions, 1 changer transitions 0/60 dead transitions. [2023-11-29 04:19:18,867 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 60 transitions, 397 flow [2023-11-29 04:19:18,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:19:18,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 04:19:18,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 66 transitions. [2023-11-29 04:19:18,869 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2023-11-29 04:19:18,869 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 66 transitions. [2023-11-29 04:19:18,869 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 66 transitions. [2023-11-29 04:19:18,869 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:19:18,869 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 66 transitions. [2023-11-29 04:19:18,870 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:18,871 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 44.0) internal successors, (176), 4 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:18,871 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 44.0) internal successors, (176), 4 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:18,871 INFO L175 Difference]: Start difference. First operand has 58 places, 62 transitions, 305 flow. Second operand 3 states and 66 transitions. [2023-11-29 04:19:18,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 60 transitions, 397 flow [2023-11-29 04:19:18,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 60 transitions, 385 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-29 04:19:18,874 INFO L231 Difference]: Finished difference. Result has 56 places, 60 transitions, 285 flow [2023-11-29 04:19:18,875 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=283, PETRI_DIFFERENCE_MINUEND_PLACES=54, 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=285, PETRI_PLACES=56, PETRI_TRANSITIONS=60} [2023-11-29 04:19:18,876 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 14 predicate places. [2023-11-29 04:19:18,876 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 60 transitions, 285 flow [2023-11-29 04:19:18,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:18,877 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:19:18,877 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:19:18,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 04:19:18,877 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-29 04:19:18,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:19:18,878 INFO L85 PathProgramCache]: Analyzing trace with hash -1208395999, now seen corresponding path program 1 times [2023-11-29 04:19:18,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:19:18,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270107603] [2023-11-29 04:19:18,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:19:18,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:19:18,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:19:19,049 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:19:19,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:19:19,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270107603] [2023-11-29 04:19:19,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270107603] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:19:19,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [486314838] [2023-11-29 04:19:19,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:19:19,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:19:19,050 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a507d66c-e13c-42ba-b228-06163571f4fd/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:19:19,053 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a507d66c-e13c-42ba-b228-06163571f4fd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:19:19,056 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a507d66c-e13c-42ba-b228-06163571f4fd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 04:19:19,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:19:19,155 INFO L262 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 04:19:19,157 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:19:19,177 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 04:19:19,177 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:19:19,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [486314838] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:19:19,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:19:19,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 7 [2023-11-29 04:19:19,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467131851] [2023-11-29 04:19:19,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:19:19,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:19:19,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:19:19,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:19:19,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-29 04:19:19,184 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 44 [2023-11-29 04:19:19,184 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 60 transitions, 285 flow. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:19,184 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:19:19,184 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 44 [2023-11-29 04:19:19,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:19:19,352 INFO L124 PetriNetUnfolderBase]: 445/851 cut-off events. [2023-11-29 04:19:19,352 INFO L125 PetriNetUnfolderBase]: For 140/196 co-relation queries the response was YES. [2023-11-29 04:19:19,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1996 conditions, 851 events. 445/851 cut-off events. For 140/196 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 4635 event pairs, 295 based on Foata normal form. 2/636 useless extension candidates. Maximal degree in co-relation 1980. Up to 742 conditions per place. [2023-11-29 04:19:19,359 INFO L140 encePairwiseOnDemand]: 41/44 looper letters, 44 selfloop transitions, 6 changer transitions 0/59 dead transitions. [2023-11-29 04:19:19,360 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 59 transitions, 381 flow [2023-11-29 04:19:19,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:19:19,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 04:19:19,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 68 transitions. [2023-11-29 04:19:19,361 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5151515151515151 [2023-11-29 04:19:19,361 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 68 transitions. [2023-11-29 04:19:19,361 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 68 transitions. [2023-11-29 04:19:19,362 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:19:19,362 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 68 transitions. [2023-11-29 04:19:19,362 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:19,363 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 44.0) internal successors, (176), 4 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:19,363 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 44.0) internal successors, (176), 4 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:19,363 INFO L175 Difference]: Start difference. First operand has 56 places, 60 transitions, 285 flow. Second operand 3 states and 68 transitions. [2023-11-29 04:19:19,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 59 transitions, 381 flow [2023-11-29 04:19:19,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 59 transitions, 380 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 04:19:19,367 INFO L231 Difference]: Finished difference. Result has 57 places, 59 transitions, 292 flow [2023-11-29 04:19:19,368 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=280, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=292, PETRI_PLACES=57, PETRI_TRANSITIONS=59} [2023-11-29 04:19:19,368 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 15 predicate places. [2023-11-29 04:19:19,369 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 59 transitions, 292 flow [2023-11-29 04:19:19,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:19,369 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:19:19,369 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:19:19,376 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a507d66c-e13c-42ba-b228-06163571f4fd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 04:19:19,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a507d66c-e13c-42ba-b228-06163571f4fd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:19:19,570 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-29 04:19:19,570 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:19:19,570 INFO L85 PathProgramCache]: Analyzing trace with hash -880048340, now seen corresponding path program 1 times [2023-11-29 04:19:19,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:19:19,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967376836] [2023-11-29 04:19:19,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:19:19,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:19:19,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:19:19,732 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 04:19:19,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:19:19,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967376836] [2023-11-29 04:19:19,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967376836] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:19:19,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [288910098] [2023-11-29 04:19:19,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:19:19,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:19:19,733 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a507d66c-e13c-42ba-b228-06163571f4fd/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:19:19,734 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a507d66c-e13c-42ba-b228-06163571f4fd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:19:19,741 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a507d66c-e13c-42ba-b228-06163571f4fd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 04:19:19,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:19:19,855 INFO L262 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 04:19:19,856 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:19:19,888 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 04:19:19,888 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:19:19,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [288910098] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:19:19,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:19:19,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2023-11-29 04:19:19,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931640668] [2023-11-29 04:19:19,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:19:19,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:19:19,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:19:19,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:19:19,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-29 04:19:19,891 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 44 [2023-11-29 04:19:19,891 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 59 transitions, 292 flow. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:19,891 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:19:19,891 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 44 [2023-11-29 04:19:19,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:19:20,028 INFO L124 PetriNetUnfolderBase]: 329/673 cut-off events. [2023-11-29 04:19:20,028 INFO L125 PetriNetUnfolderBase]: For 139/163 co-relation queries the response was YES. [2023-11-29 04:19:20,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1544 conditions, 673 events. 329/673 cut-off events. For 139/163 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 3483 event pairs, 224 based on Foata normal form. 0/558 useless extension candidates. Maximal degree in co-relation 1528. Up to 578 conditions per place. [2023-11-29 04:19:20,033 INFO L140 encePairwiseOnDemand]: 41/44 looper letters, 45 selfloop transitions, 1 changer transitions 2/57 dead transitions. [2023-11-29 04:19:20,033 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 57 transitions, 380 flow [2023-11-29 04:19:20,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:19:20,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 04:19:20,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 65 transitions. [2023-11-29 04:19:20,035 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49242424242424243 [2023-11-29 04:19:20,035 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 65 transitions. [2023-11-29 04:19:20,035 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 65 transitions. [2023-11-29 04:19:20,035 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:19:20,035 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 65 transitions. [2023-11-29 04:19:20,036 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:20,036 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 44.0) internal successors, (176), 4 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:20,036 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 44.0) internal successors, (176), 4 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:20,037 INFO L175 Difference]: Start difference. First operand has 57 places, 59 transitions, 292 flow. Second operand 3 states and 65 transitions. [2023-11-29 04:19:20,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 57 transitions, 380 flow [2023-11-29 04:19:20,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 57 transitions, 374 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 04:19:20,040 INFO L231 Difference]: Finished difference. Result has 56 places, 55 transitions, 275 flow [2023-11-29 04:19:20,041 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=278, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=275, PETRI_PLACES=56, PETRI_TRANSITIONS=55} [2023-11-29 04:19:20,041 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 14 predicate places. [2023-11-29 04:19:20,042 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 55 transitions, 275 flow [2023-11-29 04:19:20,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:20,042 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:19:20,042 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:19:20,049 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a507d66c-e13c-42ba-b228-06163571f4fd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 04:19:20,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a507d66c-e13c-42ba-b228-06163571f4fd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:19:20,249 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-29 04:19:20,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:19:20,249 INFO L85 PathProgramCache]: Analyzing trace with hash 1205670674, now seen corresponding path program 1 times [2023-11-29 04:19:20,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:19:20,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856646122] [2023-11-29 04:19:20,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:19:20,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:19:20,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:19:20,307 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 04:19:20,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:19:20,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856646122] [2023-11-29 04:19:20,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856646122] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:19:20,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1912860532] [2023-11-29 04:19:20,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:19:20,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:19:20,308 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a507d66c-e13c-42ba-b228-06163571f4fd/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:19:20,309 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a507d66c-e13c-42ba-b228-06163571f4fd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:19:20,312 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a507d66c-e13c-42ba-b228-06163571f4fd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 04:19:20,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:19:20,411 INFO L262 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 04:19:20,413 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:19:20,544 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:19:20,544 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:19:20,647 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:19:20,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1912860532] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:19:20,647 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:19:20,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 7, 7] total 14 [2023-11-29 04:19:20,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417091790] [2023-11-29 04:19:20,648 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:19:20,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-29 04:19:20,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:19:20,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-29 04:19:20,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2023-11-29 04:19:20,742 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2023-11-29 04:19:20,743 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 55 transitions, 275 flow. Second operand has 15 states, 15 states have (on average 11.2) internal successors, (168), 15 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:20,743 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:19:20,743 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2023-11-29 04:19:20,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:19:21,279 INFO L124 PetriNetUnfolderBase]: 598/1106 cut-off events. [2023-11-29 04:19:21,279 INFO L125 PetriNetUnfolderBase]: For 192/220 co-relation queries the response was YES. [2023-11-29 04:19:21,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2566 conditions, 1106 events. 598/1106 cut-off events. For 192/220 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 5834 event pairs, 140 based on Foata normal form. 0/918 useless extension candidates. Maximal degree in co-relation 2549. Up to 242 conditions per place. [2023-11-29 04:19:21,287 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 42 selfloop transitions, 28 changer transitions 42/119 dead transitions. [2023-11-29 04:19:21,287 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 119 transitions, 666 flow [2023-11-29 04:19:21,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 04:19:21,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-29 04:19:21,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 222 transitions. [2023-11-29 04:19:21,290 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36038961038961037 [2023-11-29 04:19:21,290 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 222 transitions. [2023-11-29 04:19:21,290 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 222 transitions. [2023-11-29 04:19:21,290 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:19:21,291 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 222 transitions. [2023-11-29 04:19:21,292 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 15.857142857142858) internal successors, (222), 14 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:21,294 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 44.0) internal successors, (660), 15 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:21,294 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 44.0) internal successors, (660), 15 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:21,295 INFO L175 Difference]: Start difference. First operand has 56 places, 55 transitions, 275 flow. Second operand 14 states and 222 transitions. [2023-11-29 04:19:21,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 119 transitions, 666 flow [2023-11-29 04:19:21,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 119 transitions, 665 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 04:19:21,300 INFO L231 Difference]: Finished difference. Result has 68 places, 55 transitions, 337 flow [2023-11-29 04:19:21,300 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=337, PETRI_PLACES=68, PETRI_TRANSITIONS=55} [2023-11-29 04:19:21,301 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 26 predicate places. [2023-11-29 04:19:21,301 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 55 transitions, 337 flow [2023-11-29 04:19:21,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 11.2) internal successors, (168), 15 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:21,301 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:19:21,302 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2023-11-29 04:19:21,308 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a507d66c-e13c-42ba-b228-06163571f4fd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 04:19:21,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a507d66c-e13c-42ba-b228-06163571f4fd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:19:21,508 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-29 04:19:21,508 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:19:21,509 INFO L85 PathProgramCache]: Analyzing trace with hash -2107264972, now seen corresponding path program 2 times [2023-11-29 04:19:21,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:19:21,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968119765] [2023-11-29 04:19:21,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:19:21,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:19:21,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:19:21,667 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:19:21,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:19:21,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968119765] [2023-11-29 04:19:21,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968119765] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:19:21,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1490092478] [2023-11-29 04:19:21,668 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 04:19:21,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:19:21,668 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a507d66c-e13c-42ba-b228-06163571f4fd/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:19:21,669 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a507d66c-e13c-42ba-b228-06163571f4fd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:19:21,671 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a507d66c-e13c-42ba-b228-06163571f4fd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 04:19:21,742 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 04:19:21,742 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:19:21,743 INFO L262 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 04:19:21,744 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:19:21,796 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-29 04:19:21,796 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:19:21,828 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-29 04:19:21,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1490092478] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:19:21,828 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:19:21,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 12 [2023-11-29 04:19:21,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241043417] [2023-11-29 04:19:21,829 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:19:21,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 04:19:21,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:19:21,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 04:19:21,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2023-11-29 04:19:21,856 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2023-11-29 04:19:21,856 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 55 transitions, 337 flow. Second operand has 14 states, 14 states have (on average 10.142857142857142) internal successors, (142), 14 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:21,856 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:19:21,856 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2023-11-29 04:19:21,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:19:22,222 INFO L124 PetriNetUnfolderBase]: 398/788 cut-off events. [2023-11-29 04:19:22,223 INFO L125 PetriNetUnfolderBase]: For 390/412 co-relation queries the response was YES. [2023-11-29 04:19:22,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2017 conditions, 788 events. 398/788 cut-off events. For 390/412 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 3946 event pairs, 274 based on Foata normal form. 4/692 useless extension candidates. Maximal degree in co-relation 1997. Up to 653 conditions per place. [2023-11-29 04:19:22,228 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 21 selfloop transitions, 32 changer transitions 0/60 dead transitions. [2023-11-29 04:19:22,228 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 60 transitions, 482 flow [2023-11-29 04:19:22,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-29 04:19:22,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-11-29 04:19:22,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 270 transitions. [2023-11-29 04:19:22,231 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2556818181818182 [2023-11-29 04:19:22,231 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 270 transitions. [2023-11-29 04:19:22,231 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 270 transitions. [2023-11-29 04:19:22,231 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:19:22,231 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 270 transitions. [2023-11-29 04:19:22,233 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 11.25) internal successors, (270), 24 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:22,235 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 44.0) internal successors, (1100), 25 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:22,235 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 44.0) internal successors, (1100), 25 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:22,235 INFO L175 Difference]: Start difference. First operand has 68 places, 55 transitions, 337 flow. Second operand 24 states and 270 transitions. [2023-11-29 04:19:22,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 60 transitions, 482 flow [2023-11-29 04:19:22,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 60 transitions, 468 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-11-29 04:19:22,239 INFO L231 Difference]: Finished difference. Result has 84 places, 60 transitions, 439 flow [2023-11-29 04:19:22,239 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=314, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=439, PETRI_PLACES=84, PETRI_TRANSITIONS=60} [2023-11-29 04:19:22,240 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 42 predicate places. [2023-11-29 04:19:22,240 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 60 transitions, 439 flow [2023-11-29 04:19:22,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 10.142857142857142) internal successors, (142), 14 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:22,241 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:19:22,241 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 1, 1, 1] [2023-11-29 04:19:22,246 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a507d66c-e13c-42ba-b228-06163571f4fd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-29 04:19:22,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a507d66c-e13c-42ba-b228-06163571f4fd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-29 04:19:22,441 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-29 04:19:22,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:19:22,442 INFO L85 PathProgramCache]: Analyzing trace with hash -797992788, now seen corresponding path program 1 times [2023-11-29 04:19:22,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:19:22,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258009841] [2023-11-29 04:19:22,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:19:22,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:19:22,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:19:22,669 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:19:22,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:19:22,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258009841] [2023-11-29 04:19:22,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258009841] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:19:22,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [88534227] [2023-11-29 04:19:22,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:19:22,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:19:22,670 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a507d66c-e13c-42ba-b228-06163571f4fd/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:19:22,671 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a507d66c-e13c-42ba-b228-06163571f4fd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:19:22,676 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a507d66c-e13c-42ba-b228-06163571f4fd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 04:19:22,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:19:22,786 INFO L262 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 04:19:22,788 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:19:22,851 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:19:22,851 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:19:23,034 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:19:23,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [88534227] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:19:23,034 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:19:23,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 27 [2023-11-29 04:19:23,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730748295] [2023-11-29 04:19:23,035 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:19:23,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-11-29 04:19:23,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:19:23,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-11-29 04:19:23,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=547, Unknown=0, NotChecked=0, Total=756 [2023-11-29 04:19:23,088 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2023-11-29 04:19:23,088 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 60 transitions, 439 flow. Second operand has 28 states, 28 states have (on average 10.071428571428571) internal successors, (282), 28 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:23,088 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:19:23,089 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2023-11-29 04:19:23,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:19:23,556 INFO L124 PetriNetUnfolderBase]: 419/872 cut-off events. [2023-11-29 04:19:23,557 INFO L125 PetriNetUnfolderBase]: For 893/915 co-relation queries the response was YES. [2023-11-29 04:19:23,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2391 conditions, 872 events. 419/872 cut-off events. For 893/915 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 4377 event pairs, 274 based on Foata normal form. 14/779 useless extension candidates. Maximal degree in co-relation 2370. Up to 670 conditions per place. [2023-11-29 04:19:23,564 INFO L140 encePairwiseOnDemand]: 36/44 looper letters, 24 selfloop transitions, 71 changer transitions 0/102 dead transitions. [2023-11-29 04:19:23,564 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 102 transitions, 1049 flow [2023-11-29 04:19:23,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-29 04:19:23,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-11-29 04:19:23,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 334 transitions. [2023-11-29 04:19:23,567 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.291958041958042 [2023-11-29 04:19:23,567 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 334 transitions. [2023-11-29 04:19:23,567 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 334 transitions. [2023-11-29 04:19:23,568 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:19:23,568 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 334 transitions. [2023-11-29 04:19:23,570 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 12.846153846153847) internal successors, (334), 26 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:23,572 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 44.0) internal successors, (1188), 27 states have internal predecessors, (1188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:23,573 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 44.0) internal successors, (1188), 27 states have internal predecessors, (1188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:23,573 INFO L175 Difference]: Start difference. First operand has 84 places, 60 transitions, 439 flow. Second operand 26 states and 334 transitions. [2023-11-29 04:19:23,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 102 transitions, 1049 flow [2023-11-29 04:19:23,579 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 102 transitions, 873 flow, removed 31 selfloop flow, removed 14 redundant places. [2023-11-29 04:19:23,582 INFO L231 Difference]: Finished difference. Result has 102 places, 102 transitions, 877 flow [2023-11-29 04:19:23,582 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=340, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=877, PETRI_PLACES=102, PETRI_TRANSITIONS=102} [2023-11-29 04:19:23,583 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 60 predicate places. [2023-11-29 04:19:23,583 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 102 transitions, 877 flow [2023-11-29 04:19:23,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 10.071428571428571) internal successors, (282), 28 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:23,583 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:19:23,583 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-11-29 04:19:23,589 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a507d66c-e13c-42ba-b228-06163571f4fd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 04:19:23,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a507d66c-e13c-42ba-b228-06163571f4fd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-29 04:19:23,784 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-29 04:19:23,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:19:23,785 INFO L85 PathProgramCache]: Analyzing trace with hash 29321454, now seen corresponding path program 2 times [2023-11-29 04:19:23,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:19:23,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542886942] [2023-11-29 04:19:23,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:19:23,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:19:23,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:19:23,848 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 04:19:23,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:19:23,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542886942] [2023-11-29 04:19:23,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542886942] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:19:23,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1894001903] [2023-11-29 04:19:23,849 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 04:19:23,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:19:23,849 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a507d66c-e13c-42ba-b228-06163571f4fd/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:19:23,852 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a507d66c-e13c-42ba-b228-06163571f4fd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:19:23,857 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a507d66c-e13c-42ba-b228-06163571f4fd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 04:19:23,954 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 04:19:23,954 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:19:23,955 INFO L262 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 04:19:23,957 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:19:23,989 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-29 04:19:23,989 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:19:24,029 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-29 04:19:24,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1894001903] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:19:24,030 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:19:24,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 2, 2] total 5 [2023-11-29 04:19:24,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189304040] [2023-11-29 04:19:24,030 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:19:24,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 04:19:24,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:19:24,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 04:19:24,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-29 04:19:24,044 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 44 [2023-11-29 04:19:24,045 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 102 transitions, 877 flow. Second operand has 7 states, 7 states have (on average 16.857142857142858) internal successors, (118), 7 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:24,045 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:19:24,045 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 44 [2023-11-29 04:19:24,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:19:24,334 INFO L124 PetriNetUnfolderBase]: 533/1020 cut-off events. [2023-11-29 04:19:24,334 INFO L125 PetriNetUnfolderBase]: For 846/866 co-relation queries the response was YES. [2023-11-29 04:19:24,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2819 conditions, 1020 events. 533/1020 cut-off events. For 846/866 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 5006 event pairs, 88 based on Foata normal form. 0/926 useless extension candidates. Maximal degree in co-relation 2793. Up to 320 conditions per place. [2023-11-29 04:19:24,339 INFO L140 encePairwiseOnDemand]: 40/44 looper letters, 65 selfloop transitions, 1 changer transitions 73/142 dead transitions. [2023-11-29 04:19:24,340 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 142 transitions, 1247 flow [2023-11-29 04:19:24,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 04:19:24,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 04:19:24,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 157 transitions. [2023-11-29 04:19:24,341 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5097402597402597 [2023-11-29 04:19:24,342 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 157 transitions. [2023-11-29 04:19:24,342 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 157 transitions. [2023-11-29 04:19:24,342 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:19:24,342 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 157 transitions. [2023-11-29 04:19:24,343 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 22.428571428571427) internal successors, (157), 7 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:24,344 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 44.0) internal successors, (352), 8 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:24,344 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 44.0) internal successors, (352), 8 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:24,344 INFO L175 Difference]: Start difference. First operand has 102 places, 102 transitions, 877 flow. Second operand 7 states and 157 transitions. [2023-11-29 04:19:24,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 142 transitions, 1247 flow [2023-11-29 04:19:24,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 142 transitions, 1064 flow, removed 54 selfloop flow, removed 12 redundant places. [2023-11-29 04:19:24,356 INFO L231 Difference]: Finished difference. Result has 95 places, 69 transitions, 573 flow [2023-11-29 04:19:24,357 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=688, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=573, PETRI_PLACES=95, PETRI_TRANSITIONS=69} [2023-11-29 04:19:24,357 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 53 predicate places. [2023-11-29 04:19:24,358 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 69 transitions, 573 flow [2023-11-29 04:19:24,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.857142857142858) internal successors, (118), 7 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:24,358 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:19:24,358 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 12, 1, 1, 1] [2023-11-29 04:19:24,364 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a507d66c-e13c-42ba-b228-06163571f4fd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 04:19:24,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a507d66c-e13c-42ba-b228-06163571f4fd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-29 04:19:24,561 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-29 04:19:24,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:19:24,561 INFO L85 PathProgramCache]: Analyzing trace with hash 1188211937, now seen corresponding path program 2 times [2023-11-29 04:19:24,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:19:24,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108550572] [2023-11-29 04:19:24,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:19:24,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:19:24,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:19:25,191 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 0 proven. 234 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:19:25,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:19:25,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108550572] [2023-11-29 04:19:25,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108550572] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:19:25,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [363045978] [2023-11-29 04:19:25,192 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 04:19:25,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:19:25,192 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a507d66c-e13c-42ba-b228-06163571f4fd/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:19:25,193 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a507d66c-e13c-42ba-b228-06163571f4fd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:19:25,196 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a507d66c-e13c-42ba-b228-06163571f4fd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 04:19:25,301 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 04:19:25,301 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:19:25,302 INFO L262 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 04:19:25,304 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:19:25,414 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2023-11-29 04:19:25,414 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:19:25,505 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2023-11-29 04:19:25,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [363045978] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:19:25,506 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:19:25,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 3, 3] total 30 [2023-11-29 04:19:25,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056527274] [2023-11-29 04:19:25,506 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:19:25,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-11-29 04:19:25,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:19:25,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-11-29 04:19:25,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=228, Invalid=702, Unknown=0, NotChecked=0, Total=930 [2023-11-29 04:19:25,583 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2023-11-29 04:19:25,583 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 69 transitions, 573 flow. Second operand has 31 states, 31 states have (on average 10.096774193548388) internal successors, (313), 31 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:25,583 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:19:25,583 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2023-11-29 04:19:25,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:19:26,265 INFO L124 PetriNetUnfolderBase]: 15/141 cut-off events. [2023-11-29 04:19:26,265 INFO L125 PetriNetUnfolderBase]: For 617/617 co-relation queries the response was YES. [2023-11-29 04:19:26,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 569 conditions, 141 events. 15/141 cut-off events. For 617/617 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 250 event pairs, 0 based on Foata normal form. 4/142 useless extension candidates. Maximal degree in co-relation 550. Up to 42 conditions per place. [2023-11-29 04:19:26,266 INFO L140 encePairwiseOnDemand]: 37/44 looper letters, 0 selfloop transitions, 0 changer transitions 73/73 dead transitions. [2023-11-29 04:19:26,266 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 73 transitions, 733 flow [2023-11-29 04:19:26,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-11-29 04:19:26,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2023-11-29 04:19:26,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 343 transitions. [2023-11-29 04:19:26,269 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.25984848484848483 [2023-11-29 04:19:26,269 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 343 transitions. [2023-11-29 04:19:26,269 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 343 transitions. [2023-11-29 04:19:26,270 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:19:26,270 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 343 transitions. [2023-11-29 04:19:26,271 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 11.433333333333334) internal successors, (343), 30 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:26,274 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 44.0) internal successors, (1364), 31 states have internal predecessors, (1364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:26,275 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 44.0) internal successors, (1364), 31 states have internal predecessors, (1364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:26,275 INFO L175 Difference]: Start difference. First operand has 95 places, 69 transitions, 573 flow. Second operand 30 states and 343 transitions. [2023-11-29 04:19:26,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 73 transitions, 733 flow [2023-11-29 04:19:26,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 73 transitions, 676 flow, removed 4 selfloop flow, removed 15 redundant places. [2023-11-29 04:19:26,279 INFO L231 Difference]: Finished difference. Result has 81 places, 0 transitions, 0 flow [2023-11-29 04:19:26,279 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=494, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=0, PETRI_PLACES=81, PETRI_TRANSITIONS=0} [2023-11-29 04:19:26,280 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 39 predicate places. [2023-11-29 04:19:26,280 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 0 transitions, 0 flow [2023-11-29 04:19:26,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 10.096774193548388) internal successors, (313), 31 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:19:26,283 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 18 remaining) [2023-11-29 04:19:26,283 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 18 remaining) [2023-11-29 04:19:26,283 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 18 remaining) [2023-11-29 04:19:26,283 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 18 remaining) [2023-11-29 04:19:26,283 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 18 remaining) [2023-11-29 04:19:26,284 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 18 remaining) [2023-11-29 04:19:26,284 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 18 remaining) [2023-11-29 04:19:26,284 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 18 remaining) [2023-11-29 04:19:26,284 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 18 remaining) [2023-11-29 04:19:26,284 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 18 remaining) [2023-11-29 04:19:26,284 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 18 remaining) [2023-11-29 04:19:26,284 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 18 remaining) [2023-11-29 04:19:26,284 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 18 remaining) [2023-11-29 04:19:26,285 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 18 remaining) [2023-11-29 04:19:26,285 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 18 remaining) [2023-11-29 04:19:26,285 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 18 remaining) [2023-11-29 04:19:26,285 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 18 remaining) [2023-11-29 04:19:26,285 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 18 remaining) [2023-11-29 04:19:26,290 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a507d66c-e13c-42ba-b228-06163571f4fd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-29 04:19:26,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a507d66c-e13c-42ba-b228-06163571f4fd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-29 04:19:26,486 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:19:26,491 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-29 04:19:26,491 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-29 04:19:26,495 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 04:19:26 BasicIcfg [2023-11-29 04:19:26,495 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-29 04:19:26,496 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-29 04:19:26,496 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-29 04:19:26,496 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-29 04:19:26,496 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:19:15" (3/4) ... [2023-11-29 04:19:26,498 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-29 04:19:26,500 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-11-29 04:19:26,500 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-11-29 04:19:26,507 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 140 nodes and edges [2023-11-29 04:19:26,508 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 27 nodes and edges [2023-11-29 04:19:26,508 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2023-11-29 04:19:26,508 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-11-29 04:19:26,593 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a507d66c-e13c-42ba-b228-06163571f4fd/bin/uautomizer-verify-BQ2R08f2Ya/witness.graphml [2023-11-29 04:19:26,594 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a507d66c-e13c-42ba-b228-06163571f4fd/bin/uautomizer-verify-BQ2R08f2Ya/witness.yml [2023-11-29 04:19:26,594 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-29 04:19:26,595 INFO L158 Benchmark]: Toolchain (without parser) took 11865.88ms. Allocated memory was 148.9MB in the beginning and 262.1MB in the end (delta: 113.2MB). Free memory was 110.9MB in the beginning and 104.9MB in the end (delta: 6.1MB). Peak memory consumption was 120.2MB. Max. memory is 16.1GB. [2023-11-29 04:19:26,595 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 104.9MB. Free memory is still 79.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 04:19:26,596 INFO L158 Benchmark]: CACSL2BoogieTranslator took 278.11ms. Allocated memory is still 148.9MB. Free memory was 110.8MB in the beginning and 98.4MB in the end (delta: 12.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-29 04:19:26,596 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.22ms. Allocated memory is still 148.9MB. Free memory was 98.4MB in the beginning and 96.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 04:19:26,597 INFO L158 Benchmark]: Boogie Preprocessor took 56.29ms. Allocated memory is still 148.9MB. Free memory was 96.3MB in the beginning and 93.4MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-29 04:19:26,597 INFO L158 Benchmark]: RCFGBuilder took 730.48ms. Allocated memory is still 148.9MB. Free memory was 93.4MB in the beginning and 58.3MB in the end (delta: 35.0MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2023-11-29 04:19:26,598 INFO L158 Benchmark]: TraceAbstraction took 10646.79ms. Allocated memory was 148.9MB in the beginning and 262.1MB in the end (delta: 113.2MB). Free memory was 58.2MB in the beginning and 111.1MB in the end (delta: -53.0MB). Peak memory consumption was 63.4MB. Max. memory is 16.1GB. [2023-11-29 04:19:26,598 INFO L158 Benchmark]: Witness Printer took 98.64ms. Allocated memory is still 262.1MB. Free memory was 111.1MB in the beginning and 104.9MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-29 04:19:26,600 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 104.9MB. Free memory is still 79.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 278.11ms. Allocated memory is still 148.9MB. Free memory was 110.8MB in the beginning and 98.4MB in the end (delta: 12.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 48.22ms. Allocated memory is still 148.9MB. Free memory was 98.4MB in the beginning and 96.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 56.29ms. Allocated memory is still 148.9MB. Free memory was 96.3MB in the beginning and 93.4MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 730.48ms. Allocated memory is still 148.9MB. Free memory was 93.4MB in the beginning and 58.3MB in the end (delta: 35.0MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * TraceAbstraction took 10646.79ms. Allocated memory was 148.9MB in the beginning and 262.1MB in the end (delta: 113.2MB). Free memory was 58.2MB in the beginning and 111.1MB in the end (delta: -53.0MB). Peak memory consumption was 63.4MB. Max. memory is 16.1GB. * Witness Printer took 98.64ms. Allocated memory is still 262.1MB. Free memory was 111.1MB in the beginning and 104.9MB 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: - PositiveResult [Line: 53]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 53]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 58]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 58]: 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: 117]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 117]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 117]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 117]: 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 5 procedures, 62 locations, 18 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: 10.5s, OverallIterations: 13, TraceHistogramMax: 13, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 4.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1013 SdHoareTripleChecker+Valid, 1.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 947 mSDsluCounter, 452 SdHoareTripleChecker+Invalid, 1.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 430 mSDsCounter, 251 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1737 IncrementalHoareTripleChecker+Invalid, 1988 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 251 mSolverCounterUnsat, 22 mSDtfsCounter, 1737 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 408 GetRequests, 207 SyntacticMatches, 6 SemanticMatches, 195 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1367 ImplicationChecksByTransitivity, 2.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=877occurred in iteration=11, InterpolantAutomatonStates: 137, 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, 0.4s SatisfiabilityAnalysisTime, 2.9s InterpolantComputationTime, 325 NumberOfCodeBlocks, 265 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 415 ConstructedInterpolants, 0 QuantifiedInterpolants, 1343 SizeOfPredicates, 28 NumberOfNonLiveVariables, 1274 ConjunctsInSsa, 57 ConjunctsInUnsatCore, 28 InterpolantComputations, 7 PerfectInterpolantSequences, 502/1000 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 10 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-29 04:19:26,616 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a507d66c-e13c-42ba-b228-06163571f4fd/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE