./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-name-comparator-trans.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_20fa3149-1759-4248-b8ed-b547f5f91907/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20fa3149-1759-4248-b8ed-b547f5f91907/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_20fa3149-1759-4248-b8ed-b547f5f91907/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20fa3149-1759-4248-b8ed-b547f5f91907/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-name-comparator-trans.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20fa3149-1759-4248-b8ed-b547f5f91907/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_20fa3149-1759-4248-b8ed-b547f5f91907/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 362ca5c35cce683744d8d619a442f154ce469608d45ae43ff282ddf886694959 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 04:20:19,267 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 04:20:19,337 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20fa3149-1759-4248-b8ed-b547f5f91907/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-29 04:20:19,343 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 04:20:19,343 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 04:20:19,369 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 04:20:19,370 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 04:20:19,371 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 04:20:19,371 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 04:20:19,372 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 04:20:19,372 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 04:20:19,373 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 04:20:19,374 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 04:20:19,374 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 04:20:19,375 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 04:20:19,375 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 04:20:19,376 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 04:20:19,376 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 04:20:19,377 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 04:20:19,377 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 04:20:19,378 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 04:20:19,379 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 04:20:19,379 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 04:20:19,380 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 04:20:19,380 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-29 04:20:19,380 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 04:20:19,381 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 04:20:19,381 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 04:20:19,382 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 04:20:19,382 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 04:20:19,383 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 04:20:19,383 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 04:20:19,383 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 04:20:19,383 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 04:20:19,384 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 04:20:19,384 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 04:20:19,384 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 04:20:19,384 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 04:20:19,385 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 04:20:19,385 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 04:20:19,385 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 04:20:19,385 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 04:20:19,386 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 04:20:19,386 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 04:20:19,386 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_20fa3149-1759-4248-b8ed-b547f5f91907/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20fa3149-1759-4248-b8ed-b547f5f91907/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 362ca5c35cce683744d8d619a442f154ce469608d45ae43ff282ddf886694959 [2023-11-29 04:20:19,606 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 04:20:19,627 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 04:20:19,630 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 04:20:19,631 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 04:20:19,632 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 04:20:19,633 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20fa3149-1759-4248-b8ed-b547f5f91907/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/weaver/chl-name-comparator-trans.wvr.c [2023-11-29 04:20:22,349 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 04:20:22,562 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 04:20:22,563 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20fa3149-1759-4248-b8ed-b547f5f91907/sv-benchmarks/c/weaver/chl-name-comparator-trans.wvr.c [2023-11-29 04:20:22,572 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20fa3149-1759-4248-b8ed-b547f5f91907/bin/uautomizer-verify-BQ2R08f2Ya/data/533909bd4/cbb06571a7c54d3886d1010d71111252/FLAG996615cfd [2023-11-29 04:20:22,583 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20fa3149-1759-4248-b8ed-b547f5f91907/bin/uautomizer-verify-BQ2R08f2Ya/data/533909bd4/cbb06571a7c54d3886d1010d71111252 [2023-11-29 04:20:22,585 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 04:20:22,586 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 04:20:22,588 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 04:20:22,588 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 04:20:22,593 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 04:20:22,594 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 04:20:22" (1/1) ... [2023-11-29 04:20:22,595 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79b5c1cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:20:22, skipping insertion in model container [2023-11-29 04:20:22,595 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 04:20:22" (1/1) ... [2023-11-29 04:20:22,624 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 04:20:22,793 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 04:20:22,804 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 04:20:22,844 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 04:20:22,861 INFO L206 MainTranslator]: Completed translation [2023-11-29 04:20:22,861 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:20:22 WrapperNode [2023-11-29 04:20:22,861 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 04:20:22,863 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 04:20:22,863 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 04:20:22,863 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 04:20:22,870 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:20:22" (1/1) ... [2023-11-29 04:20:22,881 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:20:22" (1/1) ... [2023-11-29 04:20:22,915 INFO L138 Inliner]: procedures = 26, calls = 45, calls flagged for inlining = 18, calls inlined = 22, statements flattened = 371 [2023-11-29 04:20:22,916 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 04:20:22,917 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 04:20:22,917 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 04:20:22,917 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 04:20:22,929 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:20:22" (1/1) ... [2023-11-29 04:20:22,930 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:20:22" (1/1) ... [2023-11-29 04:20:22,935 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:20:22" (1/1) ... [2023-11-29 04:20:22,954 INFO L175 MemorySlicer]: Split 12 memory accesses to 5 slices as follows [2, 4, 2, 2, 2]. 33 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 4 writes are split as follows [0, 1, 1, 1, 1]. [2023-11-29 04:20:22,955 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:20:22" (1/1) ... [2023-11-29 04:20:22,955 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:20:22" (1/1) ... [2023-11-29 04:20:22,968 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:20:22" (1/1) ... [2023-11-29 04:20:22,973 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:20:22" (1/1) ... [2023-11-29 04:20:22,976 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:20:22" (1/1) ... [2023-11-29 04:20:22,979 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:20:22" (1/1) ... [2023-11-29 04:20:22,984 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 04:20:22,985 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 04:20:22,985 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 04:20:22,986 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 04:20:22,986 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:20:22" (1/1) ... [2023-11-29 04:20:22,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 04:20:23,004 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20fa3149-1759-4248-b8ed-b547f5f91907/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:20:23,017 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20fa3149-1759-4248-b8ed-b547f5f91907/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 04:20:23,022 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20fa3149-1759-4248-b8ed-b547f5f91907/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 04:20:23,053 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 04:20:23,053 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 04:20:23,053 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 04:20:23,054 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-29 04:20:23,054 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-29 04:20:23,054 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-29 04:20:23,054 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-29 04:20:23,054 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-29 04:20:23,054 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-29 04:20:23,054 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-29 04:20:23,055 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-29 04:20:23,055 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-29 04:20:23,055 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-29 04:20:23,055 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-29 04:20:23,055 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-29 04:20:23,055 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-29 04:20:23,055 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-29 04:20:23,055 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-29 04:20:23,056 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 04:20:23,056 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 04:20:23,056 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 04:20:23,056 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-29 04:20:23,056 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-29 04:20:23,056 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-29 04:20:23,057 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 04:20:23,057 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 04:20:23,057 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 04:20:23,059 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 04:20:23,198 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 04:20:23,201 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 04:20:23,688 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 04:20:24,193 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 04:20:24,194 INFO L309 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-29 04:20:24,194 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:20:24 BoogieIcfgContainer [2023-11-29 04:20:24,194 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 04:20:24,196 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 04:20:24,196 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 04:20:24,200 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 04:20:24,200 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 04:20:22" (1/3) ... [2023-11-29 04:20:24,201 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@395cf137 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 04:20:24, skipping insertion in model container [2023-11-29 04:20:24,201 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:20:22" (2/3) ... [2023-11-29 04:20:24,201 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@395cf137 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 04:20:24, skipping insertion in model container [2023-11-29 04:20:24,201 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:20:24" (3/3) ... [2023-11-29 04:20:24,202 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-name-comparator-trans.wvr.c [2023-11-29 04:20:24,212 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-29 04:20:24,222 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 04:20:24,223 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 26 error locations. [2023-11-29 04:20:24,223 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 04:20:24,302 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-29 04:20:24,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 109 places, 115 transitions, 251 flow [2023-11-29 04:20:24,384 INFO L124 PetriNetUnfolderBase]: 16/112 cut-off events. [2023-11-29 04:20:24,384 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-29 04:20:24,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125 conditions, 112 events. 16/112 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 436 event pairs, 0 based on Foata normal form. 0/70 useless extension candidates. Maximal degree in co-relation 102. Up to 2 conditions per place. [2023-11-29 04:20:24,390 INFO L82 GeneralOperation]: Start removeDead. Operand has 109 places, 115 transitions, 251 flow [2023-11-29 04:20:24,396 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 104 places, 110 transitions, 235 flow [2023-11-29 04:20:24,405 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 04:20:24,412 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;@13792a33, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 04:20:24,412 INFO L358 AbstractCegarLoop]: Starting to check reachability of 53 error locations. [2023-11-29 04:20:24,416 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 04:20:24,416 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2023-11-29 04:20:24,417 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 04:20:24,417 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:20:24,417 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-29 04:20:24,418 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-11-29 04:20:24,423 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:20:24,423 INFO L85 PathProgramCache]: Analyzing trace with hash 1023587, now seen corresponding path program 1 times [2023-11-29 04:20:24,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:20:24,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428536404] [2023-11-29 04:20:24,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:20:24,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:20:24,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:20:24,719 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 04:20:24,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:20:24,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428536404] [2023-11-29 04:20:24,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428536404] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:20:24,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:20:24,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 04:20:24,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697935825] [2023-11-29 04:20:24,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:20:24,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:20:24,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:20:24,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:20:24,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:20:24,773 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 115 [2023-11-29 04:20:24,776 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 110 transitions, 235 flow. Second operand has 4 states, 4 states have (on average 55.75) internal successors, (223), 4 states have internal predecessors, (223), 0 states have call successors, (0), 0 states 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 04:20:24,776 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:20:24,776 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 115 [2023-11-29 04:20:24,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:20:26,956 INFO L124 PetriNetUnfolderBase]: 10397/18956 cut-off events. [2023-11-29 04:20:26,956 INFO L125 PetriNetUnfolderBase]: For 430/430 co-relation queries the response was YES. [2023-11-29 04:20:27,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33035 conditions, 18956 events. 10397/18956 cut-off events. For 430/430 co-relation queries the response was YES. Maximal size of possible extension queue 937. Compared 163235 event pairs, 6969 based on Foata normal form. 799/15680 useless extension candidates. Maximal degree in co-relation 30822. Up to 13703 conditions per place. [2023-11-29 04:20:27,141 INFO L140 encePairwiseOnDemand]: 106/115 looper letters, 54 selfloop transitions, 4 changer transitions 0/110 dead transitions. [2023-11-29 04:20:27,141 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 110 transitions, 351 flow [2023-11-29 04:20:27,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:20:27,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 04:20:27,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 283 transitions. [2023-11-29 04:20:27,156 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6152173913043478 [2023-11-29 04:20:27,157 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 283 transitions. [2023-11-29 04:20:27,157 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 283 transitions. [2023-11-29 04:20:27,159 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:20:27,161 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 283 transitions. [2023-11-29 04:20:27,164 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 70.75) internal successors, (283), 4 states have internal predecessors, (283), 0 states have call successors, (0), 0 states 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 04:20:27,169 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 115.0) internal successors, (575), 5 states have internal predecessors, (575), 0 states have call successors, (0), 0 states 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 04:20:27,169 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 115.0) internal successors, (575), 5 states have internal predecessors, (575), 0 states have call successors, (0), 0 states 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 04:20:27,171 INFO L175 Difference]: Start difference. First operand has 104 places, 110 transitions, 235 flow. Second operand 4 states and 283 transitions. [2023-11-29 04:20:27,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 110 transitions, 351 flow [2023-11-29 04:20:27,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 110 transitions, 342 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-29 04:20:27,185 INFO L231 Difference]: Finished difference. Result has 104 places, 110 transitions, 249 flow [2023-11-29 04:20:27,187 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=249, PETRI_PLACES=104, PETRI_TRANSITIONS=110} [2023-11-29 04:20:27,190 INFO L281 CegarLoopForPetriNet]: 104 programPoint places, 0 predicate places. [2023-11-29 04:20:27,191 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 110 transitions, 249 flow [2023-11-29 04:20:27,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 55.75) internal successors, (223), 4 states have internal predecessors, (223), 0 states have call successors, (0), 0 states 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 04:20:27,191 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:20:27,192 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-29 04:20:27,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 04:20:27,192 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-11-29 04:20:27,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:20:27,193 INFO L85 PathProgramCache]: Analyzing trace with hash 429965506, now seen corresponding path program 1 times [2023-11-29 04:20:27,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:20:27,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712681011] [2023-11-29 04:20:27,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:20:27,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:20:27,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:20:27,311 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 04:20:27,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:20:27,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712681011] [2023-11-29 04:20:27,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712681011] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:20:27,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [183042613] [2023-11-29 04:20:27,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:20:27,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:20:27,313 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20fa3149-1759-4248-b8ed-b547f5f91907/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:20:27,314 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20fa3149-1759-4248-b8ed-b547f5f91907/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:20:27,322 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20fa3149-1759-4248-b8ed-b547f5f91907/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 04:20:27,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:20:27,425 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 04:20:27,429 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:20:27,477 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 04:20:27,477 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:20:27,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [183042613] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:20:27,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:20:27,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-11-29 04:20:27,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466715347] [2023-11-29 04:20:27,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:20:27,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 04:20:27,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:20:27,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 04:20:27,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-29 04:20:27,488 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 115 [2023-11-29 04:20:27,489 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 110 transitions, 249 flow. Second operand has 6 states, 6 states have (on average 55.833333333333336) internal successors, (335), 6 states have internal predecessors, (335), 0 states have call successors, (0), 0 states 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 04:20:27,490 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:20:27,490 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 115 [2023-11-29 04:20:27,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:20:29,301 INFO L124 PetriNetUnfolderBase]: 10397/18955 cut-off events. [2023-11-29 04:20:29,301 INFO L125 PetriNetUnfolderBase]: For 98/98 co-relation queries the response was YES. [2023-11-29 04:20:29,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32909 conditions, 18955 events. 10397/18955 cut-off events. For 98/98 co-relation queries the response was YES. Maximal size of possible extension queue 937. Compared 163210 event pairs, 6969 based on Foata normal form. 1/14882 useless extension candidates. Maximal degree in co-relation 32882. Up to 13698 conditions per place. [2023-11-29 04:20:29,455 INFO L140 encePairwiseOnDemand]: 110/115 looper letters, 50 selfloop transitions, 7 changer transitions 0/109 dead transitions. [2023-11-29 04:20:29,456 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 109 transitions, 359 flow [2023-11-29 04:20:29,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 04:20:29,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 04:20:29,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 388 transitions. [2023-11-29 04:20:29,460 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5623188405797102 [2023-11-29 04:20:29,460 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 388 transitions. [2023-11-29 04:20:29,460 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 388 transitions. [2023-11-29 04:20:29,461 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:20:29,461 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 388 transitions. [2023-11-29 04:20:29,464 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 64.66666666666667) internal successors, (388), 6 states have internal predecessors, (388), 0 states have call successors, (0), 0 states 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 04:20:29,467 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 115.0) internal successors, (805), 7 states have internal predecessors, (805), 0 states have call successors, (0), 0 states 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 04:20:29,468 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 115.0) internal successors, (805), 7 states have internal predecessors, (805), 0 states have call successors, (0), 0 states 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 04:20:29,468 INFO L175 Difference]: Start difference. First operand has 104 places, 110 transitions, 249 flow. Second operand 6 states and 388 transitions. [2023-11-29 04:20:29,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 109 transitions, 359 flow [2023-11-29 04:20:29,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 109 transitions, 356 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 04:20:29,472 INFO L231 Difference]: Finished difference. Result has 107 places, 109 transitions, 256 flow [2023-11-29 04:20:29,473 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=256, PETRI_PLACES=107, PETRI_TRANSITIONS=109} [2023-11-29 04:20:29,474 INFO L281 CegarLoopForPetriNet]: 104 programPoint places, 3 predicate places. [2023-11-29 04:20:29,474 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 109 transitions, 256 flow [2023-11-29 04:20:29,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 55.833333333333336) internal successors, (335), 6 states have internal predecessors, (335), 0 states have call successors, (0), 0 states 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 04:20:29,475 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:20:29,475 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:20:29,483 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20fa3149-1759-4248-b8ed-b547f5f91907/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 04:20:29,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20fa3149-1759-4248-b8ed-b547f5f91907/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:20:29,676 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-11-29 04:20:29,676 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:20:29,677 INFO L85 PathProgramCache]: Analyzing trace with hash 594419976, now seen corresponding path program 1 times [2023-11-29 04:20:29,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:20:29,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245362778] [2023-11-29 04:20:29,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:20:29,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:20:29,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:20:29,774 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 04:20:29,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:20:29,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245362778] [2023-11-29 04:20:29,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245362778] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:20:29,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:20:29,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:20:29,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520761265] [2023-11-29 04:20:29,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:20:29,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:20:29,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:20:29,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:20:29,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:20:29,785 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 115 [2023-11-29 04:20:29,786 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 109 transitions, 256 flow. Second operand has 4 states, 4 states have (on average 56.5) internal successors, (226), 4 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:20:29,786 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:20:29,786 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 115 [2023-11-29 04:20:29,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:20:32,729 INFO L124 PetriNetUnfolderBase]: 22151/39815 cut-off events. [2023-11-29 04:20:32,729 INFO L125 PetriNetUnfolderBase]: For 140/140 co-relation queries the response was YES. [2023-11-29 04:20:32,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69596 conditions, 39815 events. 22151/39815 cut-off events. For 140/140 co-relation queries the response was YES. Maximal size of possible extension queue 1816. Compared 373340 event pairs, 9965 based on Foata normal form. 314/31911 useless extension candidates. Maximal degree in co-relation 69566. Up to 16313 conditions per place. [2023-11-29 04:20:32,952 INFO L140 encePairwiseOnDemand]: 110/115 looper letters, 133 selfloop transitions, 3 changer transitions 0/187 dead transitions. [2023-11-29 04:20:32,952 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 187 transitions, 692 flow [2023-11-29 04:20:32,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:20:32,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 04:20:32,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 355 transitions. [2023-11-29 04:20:32,955 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7717391304347826 [2023-11-29 04:20:32,955 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 355 transitions. [2023-11-29 04:20:32,955 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 355 transitions. [2023-11-29 04:20:32,955 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:20:32,955 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 355 transitions. [2023-11-29 04:20:32,957 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 88.75) internal successors, (355), 4 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:20:32,959 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 115.0) internal successors, (575), 5 states have internal predecessors, (575), 0 states have call successors, (0), 0 states 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 04:20:32,959 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 115.0) internal successors, (575), 5 states have internal predecessors, (575), 0 states have call successors, (0), 0 states 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 04:20:32,959 INFO L175 Difference]: Start difference. First operand has 107 places, 109 transitions, 256 flow. Second operand 4 states and 355 transitions. [2023-11-29 04:20:32,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 187 transitions, 692 flow [2023-11-29 04:20:32,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 187 transitions, 670 flow, removed 2 selfloop flow, removed 5 redundant places. [2023-11-29 04:20:32,966 INFO L231 Difference]: Finished difference. Result has 107 places, 111 transitions, 256 flow [2023-11-29 04:20:32,967 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=256, PETRI_PLACES=107, PETRI_TRANSITIONS=111} [2023-11-29 04:20:32,967 INFO L281 CegarLoopForPetriNet]: 104 programPoint places, 3 predicate places. [2023-11-29 04:20:32,968 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 111 transitions, 256 flow [2023-11-29 04:20:32,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.5) internal successors, (226), 4 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:20:32,968 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:20:32,968 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2023-11-29 04:20:32,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 04:20:32,969 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-11-29 04:20:32,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:20:32,969 INFO L85 PathProgramCache]: Analyzing trace with hash 444029860, now seen corresponding path program 1 times [2023-11-29 04:20:32,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:20:32,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490190749] [2023-11-29 04:20:32,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:20:32,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:20:32,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:20:33,050 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 04:20:33,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:20:33,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490190749] [2023-11-29 04:20:33,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490190749] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:20:33,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [14128504] [2023-11-29 04:20:33,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:20:33,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:20:33,052 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20fa3149-1759-4248-b8ed-b547f5f91907/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:20:33,053 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20fa3149-1759-4248-b8ed-b547f5f91907/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:20:33,069 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20fa3149-1759-4248-b8ed-b547f5f91907/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 04:20:33,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:20:33,164 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 04:20:33,166 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:20:33,192 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 04:20:33,192 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:20:33,238 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 04:20:33,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [14128504] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:20:33,239 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:20:33,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2023-11-29 04:20:33,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025053571] [2023-11-29 04:20:33,239 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:20:33,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 04:20:33,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:20:33,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 04:20:33,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-11-29 04:20:33,255 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 115 [2023-11-29 04:20:33,257 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 111 transitions, 256 flow. Second operand has 12 states, 12 states have (on average 56.083333333333336) internal successors, (673), 12 states have internal predecessors, (673), 0 states have call successors, (0), 0 states 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 04:20:33,257 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:20:33,257 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 115 [2023-11-29 04:20:33,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:20:36,050 INFO L124 PetriNetUnfolderBase]: 20058/36461 cut-off events. [2023-11-29 04:20:36,050 INFO L125 PetriNetUnfolderBase]: For 2421/2908 co-relation queries the response was YES. [2023-11-29 04:20:36,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65074 conditions, 36461 events. 20058/36461 cut-off events. For 2421/2908 co-relation queries the response was YES. Maximal size of possible extension queue 1660. Compared 341653 event pairs, 13627 based on Foata normal form. 3/29101 useless extension candidates. Maximal degree in co-relation 65022. Up to 26417 conditions per place. [2023-11-29 04:20:36,368 INFO L140 encePairwiseOnDemand]: 110/115 looper letters, 55 selfloop transitions, 13 changer transitions 0/120 dead transitions. [2023-11-29 04:20:36,368 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 120 transitions, 422 flow [2023-11-29 04:20:36,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 04:20:36,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 04:20:36,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 619 transitions. [2023-11-29 04:20:36,372 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5382608695652173 [2023-11-29 04:20:36,372 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 619 transitions. [2023-11-29 04:20:36,372 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 619 transitions. [2023-11-29 04:20:36,373 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:20:36,373 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 619 transitions. [2023-11-29 04:20:36,374 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 61.9) internal successors, (619), 10 states have internal predecessors, (619), 0 states have call successors, (0), 0 states 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 04:20:36,377 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 115.0) internal successors, (1265), 11 states have internal predecessors, (1265), 0 states have call successors, (0), 0 states 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 04:20:36,378 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 115.0) internal successors, (1265), 11 states have internal predecessors, (1265), 0 states have call successors, (0), 0 states 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 04:20:36,378 INFO L175 Difference]: Start difference. First operand has 107 places, 111 transitions, 256 flow. Second operand 10 states and 619 transitions. [2023-11-29 04:20:36,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 120 transitions, 422 flow [2023-11-29 04:20:36,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 120 transitions, 420 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 04:20:36,383 INFO L231 Difference]: Finished difference. Result has 118 places, 120 transitions, 328 flow [2023-11-29 04:20:36,383 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=328, PETRI_PLACES=118, PETRI_TRANSITIONS=120} [2023-11-29 04:20:36,384 INFO L281 CegarLoopForPetriNet]: 104 programPoint places, 14 predicate places. [2023-11-29 04:20:36,384 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 120 transitions, 328 flow [2023-11-29 04:20:36,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 56.083333333333336) internal successors, (673), 12 states have internal predecessors, (673), 0 states have call successors, (0), 0 states 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 04:20:36,385 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:20:36,385 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:20:36,391 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20fa3149-1759-4248-b8ed-b547f5f91907/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 04:20:36,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20fa3149-1759-4248-b8ed-b547f5f91907/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:20:36,589 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-11-29 04:20:36,589 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:20:36,589 INFO L85 PathProgramCache]: Analyzing trace with hash -1507686080, now seen corresponding path program 1 times [2023-11-29 04:20:36,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:20:36,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267638097] [2023-11-29 04:20:36,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:20:36,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:20:36,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:20:36,644 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 04:20:36,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:20:36,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267638097] [2023-11-29 04:20:36,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267638097] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:20:36,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:20:36,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:20:36,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406092695] [2023-11-29 04:20:36,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:20:36,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:20:36,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:20:36,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:20:36,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:20:36,650 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 115 [2023-11-29 04:20:36,651 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 120 transitions, 328 flow. Second operand has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 0 states have call successors, (0), 0 states 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 04:20:36,651 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:20:36,651 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 115 [2023-11-29 04:20:36,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:20:42,490 INFO L124 PetriNetUnfolderBase]: 41260/76409 cut-off events. [2023-11-29 04:20:42,490 INFO L125 PetriNetUnfolderBase]: For 4120/5152 co-relation queries the response was YES. [2023-11-29 04:20:42,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134896 conditions, 76409 events. 41260/76409 cut-off events. For 4120/5152 co-relation queries the response was YES. Maximal size of possible extension queue 3289. Compared 800537 event pairs, 18569 based on Foata normal form. 646/61577 useless extension candidates. Maximal degree in co-relation 134860. Up to 30054 conditions per place. [2023-11-29 04:20:42,928 INFO L140 encePairwiseOnDemand]: 110/115 looper letters, 146 selfloop transitions, 3 changer transitions 0/200 dead transitions. [2023-11-29 04:20:42,928 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 200 transitions, 817 flow [2023-11-29 04:20:42,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:20:42,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 04:20:42,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 353 transitions. [2023-11-29 04:20:42,930 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7673913043478261 [2023-11-29 04:20:42,930 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 353 transitions. [2023-11-29 04:20:42,930 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 353 transitions. [2023-11-29 04:20:42,931 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:20:42,931 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 353 transitions. [2023-11-29 04:20:42,932 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 88.25) internal successors, (353), 4 states have internal predecessors, (353), 0 states have call successors, (0), 0 states 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 04:20:42,934 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 115.0) internal successors, (575), 5 states have internal predecessors, (575), 0 states have call successors, (0), 0 states 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 04:20:42,934 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 115.0) internal successors, (575), 5 states have internal predecessors, (575), 0 states have call successors, (0), 0 states 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 04:20:42,934 INFO L175 Difference]: Start difference. First operand has 118 places, 120 transitions, 328 flow. Second operand 4 states and 353 transitions. [2023-11-29 04:20:42,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 200 transitions, 817 flow [2023-11-29 04:20:42,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 200 transitions, 806 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-11-29 04:20:42,942 INFO L231 Difference]: Finished difference. Result has 121 places, 122 transitions, 339 flow [2023-11-29 04:20:42,942 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=317, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=339, PETRI_PLACES=121, PETRI_TRANSITIONS=122} [2023-11-29 04:20:42,943 INFO L281 CegarLoopForPetriNet]: 104 programPoint places, 17 predicate places. [2023-11-29 04:20:42,943 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 122 transitions, 339 flow [2023-11-29 04:20:42,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 0 states have call successors, (0), 0 states 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 04:20:42,944 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:20:42,944 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:20:42,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 04:20:42,944 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-11-29 04:20:42,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:20:42,945 INFO L85 PathProgramCache]: Analyzing trace with hash 215480772, now seen corresponding path program 1 times [2023-11-29 04:20:42,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:20:42,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036069697] [2023-11-29 04:20:42,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:20:42,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:20:42,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:20:43,001 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 04:20:43,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:20:43,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036069697] [2023-11-29 04:20:43,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036069697] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:20:43,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:20:43,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 04:20:43,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097511999] [2023-11-29 04:20:43,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:20:43,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:20:43,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:20:43,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:20:43,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:20:43,004 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 115 [2023-11-29 04:20:43,005 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 122 transitions, 339 flow. Second operand has 4 states, 4 states have (on average 58.75) internal successors, (235), 4 states have internal predecessors, (235), 0 states have call successors, (0), 0 states 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 04:20:43,005 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:20:43,005 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 115 [2023-11-29 04:20:43,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:20:47,769 INFO L124 PetriNetUnfolderBase]: 36128/59541 cut-off events. [2023-11-29 04:20:47,770 INFO L125 PetriNetUnfolderBase]: For 8605/10555 co-relation queries the response was YES. [2023-11-29 04:20:48,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115739 conditions, 59541 events. 36128/59541 cut-off events. For 8605/10555 co-relation queries the response was YES. Maximal size of possible extension queue 2212. Compared 526645 event pairs, 13843 based on Foata normal form. 0/51253 useless extension candidates. Maximal degree in co-relation 115701. Up to 25584 conditions per place. [2023-11-29 04:20:48,271 INFO L140 encePairwiseOnDemand]: 110/115 looper letters, 177 selfloop transitions, 4 changer transitions 0/234 dead transitions. [2023-11-29 04:20:48,271 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 234 transitions, 980 flow [2023-11-29 04:20:48,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 04:20:48,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 04:20:48,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 447 transitions. [2023-11-29 04:20:48,273 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7773913043478261 [2023-11-29 04:20:48,273 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 447 transitions. [2023-11-29 04:20:48,273 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 447 transitions. [2023-11-29 04:20:48,274 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:20:48,274 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 447 transitions. [2023-11-29 04:20:48,275 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 89.4) internal successors, (447), 5 states have internal predecessors, (447), 0 states have call successors, (0), 0 states 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 04:20:48,277 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 115.0) internal successors, (690), 6 states have internal predecessors, (690), 0 states have call successors, (0), 0 states 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 04:20:48,277 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 115.0) internal successors, (690), 6 states have internal predecessors, (690), 0 states have call successors, (0), 0 states 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 04:20:48,277 INFO L175 Difference]: Start difference. First operand has 121 places, 122 transitions, 339 flow. Second operand 5 states and 447 transitions. [2023-11-29 04:20:48,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 234 transitions, 980 flow [2023-11-29 04:20:48,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 234 transitions, 972 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 04:20:48,334 INFO L231 Difference]: Finished difference. Result has 127 places, 124 transitions, 362 flow [2023-11-29 04:20:48,334 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=337, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=362, PETRI_PLACES=127, PETRI_TRANSITIONS=124} [2023-11-29 04:20:48,335 INFO L281 CegarLoopForPetriNet]: 104 programPoint places, 23 predicate places. [2023-11-29 04:20:48,335 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 124 transitions, 362 flow [2023-11-29 04:20:48,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.75) internal successors, (235), 4 states have internal predecessors, (235), 0 states have call successors, (0), 0 states 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 04:20:48,335 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:20:48,335 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:20:48,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 04:20:48,336 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-11-29 04:20:48,336 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:20:48,336 INFO L85 PathProgramCache]: Analyzing trace with hash -990493526, now seen corresponding path program 1 times [2023-11-29 04:20:48,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:20:48,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551421007] [2023-11-29 04:20:48,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:20:48,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:20:48,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:20:48,397 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 04:20:48,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:20:48,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551421007] [2023-11-29 04:20:48,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551421007] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:20:48,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:20:48,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:20:48,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162719251] [2023-11-29 04:20:48,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:20:48,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:20:48,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:20:48,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:20:48,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:20:48,403 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 115 [2023-11-29 04:20:48,403 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 124 transitions, 362 flow. Second operand has 4 states, 4 states have (on average 57.5) internal successors, (230), 4 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:20:48,403 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:20:48,404 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 115 [2023-11-29 04:20:48,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:20:58,524 INFO L124 PetriNetUnfolderBase]: 68608/125725 cut-off events. [2023-11-29 04:20:58,524 INFO L125 PetriNetUnfolderBase]: For 31331/35199 co-relation queries the response was YES. [2023-11-29 04:20:58,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 240677 conditions, 125725 events. 68608/125725 cut-off events. For 31331/35199 co-relation queries the response was YES. Maximal size of possible extension queue 4608. Compared 1360773 event pairs, 29225 based on Foata normal form. 1070/106338 useless extension candidates. Maximal degree in co-relation 240637. Up to 50834 conditions per place. [2023-11-29 04:20:59,496 INFO L140 encePairwiseOnDemand]: 110/115 looper letters, 156 selfloop transitions, 3 changer transitions 0/210 dead transitions. [2023-11-29 04:20:59,496 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 210 transitions, 946 flow [2023-11-29 04:20:59,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:20:59,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 04:20:59,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 351 transitions. [2023-11-29 04:20:59,498 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7630434782608696 [2023-11-29 04:20:59,498 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 351 transitions. [2023-11-29 04:20:59,498 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 351 transitions. [2023-11-29 04:20:59,498 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:20:59,498 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 351 transitions. [2023-11-29 04:20:59,499 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 87.75) internal successors, (351), 4 states have internal predecessors, (351), 0 states have call successors, (0), 0 states 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 04:20:59,500 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 115.0) internal successors, (575), 5 states have internal predecessors, (575), 0 states have call successors, (0), 0 states 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 04:20:59,501 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 115.0) internal successors, (575), 5 states have internal predecessors, (575), 0 states have call successors, (0), 0 states 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 04:20:59,501 INFO L175 Difference]: Start difference. First operand has 127 places, 124 transitions, 362 flow. Second operand 4 states and 351 transitions. [2023-11-29 04:20:59,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 210 transitions, 946 flow [2023-11-29 04:20:59,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 210 transitions, 946 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 04:20:59,522 INFO L231 Difference]: Finished difference. Result has 132 places, 126 transitions, 384 flow [2023-11-29 04:20:59,523 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=362, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=384, PETRI_PLACES=132, PETRI_TRANSITIONS=126} [2023-11-29 04:20:59,523 INFO L281 CegarLoopForPetriNet]: 104 programPoint places, 28 predicate places. [2023-11-29 04:20:59,524 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 126 transitions, 384 flow [2023-11-29 04:20:59,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.5) internal successors, (230), 4 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:20:59,524 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:20:59,524 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:20:59,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 04:20:59,524 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-11-29 04:20:59,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:20:59,525 INFO L85 PathProgramCache]: Analyzing trace with hash -1879506655, now seen corresponding path program 1 times [2023-11-29 04:20:59,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:20:59,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076425106] [2023-11-29 04:20:59,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:20:59,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:20:59,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:20:59,585 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 04:20:59,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:20:59,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076425106] [2023-11-29 04:20:59,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076425106] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:20:59,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:20:59,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 04:20:59,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92119129] [2023-11-29 04:20:59,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:20:59,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:20:59,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:20:59,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:20:59,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:20:59,587 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 115 [2023-11-29 04:20:59,587 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 126 transitions, 384 flow. Second operand has 3 states, 3 states have (on average 59.0) internal successors, (177), 3 states have internal predecessors, (177), 0 states have call successors, (0), 0 states 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 04:20:59,587 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:20:59,587 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 115 [2023-11-29 04:20:59,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:21:09,663 INFO L124 PetriNetUnfolderBase]: 63503/113640 cut-off events. [2023-11-29 04:21:09,664 INFO L125 PetriNetUnfolderBase]: For 34991/39873 co-relation queries the response was YES. [2023-11-29 04:21:10,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 226159 conditions, 113640 events. 63503/113640 cut-off events. For 34991/39873 co-relation queries the response was YES. Maximal size of possible extension queue 4260. Compared 1195637 event pairs, 46729 based on Foata normal form. 1/96026 useless extension candidates. Maximal degree in co-relation 226123. Up to 84759 conditions per place. [2023-11-29 04:21:10,500 INFO L140 encePairwiseOnDemand]: 112/115 looper letters, 70 selfloop transitions, 2 changer transitions 0/125 dead transitions. [2023-11-29 04:21:10,500 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 125 transitions, 525 flow [2023-11-29 04:21:10,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:21:10,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 04:21:10,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 227 transitions. [2023-11-29 04:21:10,501 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6579710144927536 [2023-11-29 04:21:10,501 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 227 transitions. [2023-11-29 04:21:10,501 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 227 transitions. [2023-11-29 04:21:10,501 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:21:10,501 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 227 transitions. [2023-11-29 04:21:10,502 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 0 states have call successors, (0), 0 states 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 04:21:10,503 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 115.0) internal successors, (460), 4 states have internal predecessors, (460), 0 states have call successors, (0), 0 states 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 04:21:10,503 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 115.0) internal successors, (460), 4 states have internal predecessors, (460), 0 states have call successors, (0), 0 states 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 04:21:10,503 INFO L175 Difference]: Start difference. First operand has 132 places, 126 transitions, 384 flow. Second operand 3 states and 227 transitions. [2023-11-29 04:21:10,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 125 transitions, 525 flow [2023-11-29 04:21:10,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 125 transitions, 523 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 04:21:10,554 INFO L231 Difference]: Finished difference. Result has 133 places, 125 transitions, 383 flow [2023-11-29 04:21:10,555 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=379, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=383, PETRI_PLACES=133, PETRI_TRANSITIONS=125} [2023-11-29 04:21:10,555 INFO L281 CegarLoopForPetriNet]: 104 programPoint places, 29 predicate places. [2023-11-29 04:21:10,556 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 125 transitions, 383 flow [2023-11-29 04:21:10,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.0) internal successors, (177), 3 states have internal predecessors, (177), 0 states have call successors, (0), 0 states 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 04:21:10,556 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:21:10,556 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:21:10,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 04:21:10,556 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-11-29 04:21:10,557 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:21:10,557 INFO L85 PathProgramCache]: Analyzing trace with hash -1532144512, now seen corresponding path program 1 times [2023-11-29 04:21:10,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:21:10,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440400534] [2023-11-29 04:21:10,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:21:10,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:21:10,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:21:10,657 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 04:21:10,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:21:10,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440400534] [2023-11-29 04:21:10,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440400534] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:21:10,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [919584160] [2023-11-29 04:21:10,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:21:10,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:21:10,659 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20fa3149-1759-4248-b8ed-b547f5f91907/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:21:10,661 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20fa3149-1759-4248-b8ed-b547f5f91907/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:21:10,673 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20fa3149-1759-4248-b8ed-b547f5f91907/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 04:21:10,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:21:10,776 INFO L262 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 04:21:10,778 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:21:10,824 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 04:21:10,824 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:21:10,854 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 04:21:10,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [919584160] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:21:10,854 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:21:10,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2023-11-29 04:21:10,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312507214] [2023-11-29 04:21:10,855 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:21:10,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 04:21:10,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:21:10,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 04:21:10,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-29 04:21:10,868 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 115 [2023-11-29 04:21:10,869 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 125 transitions, 383 flow. Second operand has 10 states, 10 states have (on average 56.6) internal successors, (566), 10 states have internal predecessors, (566), 0 states have call successors, (0), 0 states 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 04:21:10,870 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:21:10,870 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 115 [2023-11-29 04:21:10,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:21:21,232 INFO L124 PetriNetUnfolderBase]: 63501/113638 cut-off events. [2023-11-29 04:21:21,232 INFO L125 PetriNetUnfolderBase]: For 33250/38132 co-relation queries the response was YES. [2023-11-29 04:21:21,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 225258 conditions, 113638 events. 63501/113638 cut-off events. For 33250/38132 co-relation queries the response was YES. Maximal size of possible extension queue 4260. Compared 1195455 event pairs, 46729 based on Foata normal form. 2/96025 useless extension candidates. Maximal degree in co-relation 225229. Up to 84751 conditions per place. [2023-11-29 04:21:22,060 INFO L140 encePairwiseOnDemand]: 111/115 looper letters, 61 selfloop transitions, 10 changer transitions 0/123 dead transitions. [2023-11-29 04:21:22,060 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 123 transitions, 517 flow [2023-11-29 04:21:22,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 04:21:22,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 04:21:22,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 446 transitions. [2023-11-29 04:21:22,062 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5540372670807453 [2023-11-29 04:21:22,062 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 446 transitions. [2023-11-29 04:21:22,062 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 446 transitions. [2023-11-29 04:21:22,062 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:21:22,063 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 446 transitions. [2023-11-29 04:21:22,064 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 63.714285714285715) internal successors, (446), 7 states have internal predecessors, (446), 0 states have call successors, (0), 0 states 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 04:21:22,065 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 115.0) internal successors, (920), 8 states have internal predecessors, (920), 0 states have call successors, (0), 0 states 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 04:21:22,066 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 115.0) internal successors, (920), 8 states have internal predecessors, (920), 0 states have call successors, (0), 0 states 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 04:21:22,066 INFO L175 Difference]: Start difference. First operand has 133 places, 125 transitions, 383 flow. Second operand 7 states and 446 transitions. [2023-11-29 04:21:22,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 123 transitions, 517 flow [2023-11-29 04:21:22,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 123 transitions, 513 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 04:21:22,111 INFO L231 Difference]: Finished difference. Result has 137 places, 123 transitions, 391 flow [2023-11-29 04:21:22,111 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=371, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=391, PETRI_PLACES=137, PETRI_TRANSITIONS=123} [2023-11-29 04:21:22,112 INFO L281 CegarLoopForPetriNet]: 104 programPoint places, 33 predicate places. [2023-11-29 04:21:22,112 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 123 transitions, 391 flow [2023-11-29 04:21:22,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 56.6) internal successors, (566), 10 states have internal predecessors, (566), 0 states have call successors, (0), 0 states 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 04:21:22,113 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:21:22,113 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2023-11-29 04:21:22,117 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20fa3149-1759-4248-b8ed-b547f5f91907/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 04:21:22,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20fa3149-1759-4248-b8ed-b547f5f91907/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:21:22,314 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-11-29 04:21:22,314 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:21:22,314 INFO L85 PathProgramCache]: Analyzing trace with hash 1185116899, now seen corresponding path program 2 times [2023-11-29 04:21:22,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:21:22,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995339379] [2023-11-29 04:21:22,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:21:22,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:21:22,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:21:22,479 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 21 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 04:21:22,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:21:22,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995339379] [2023-11-29 04:21:22,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995339379] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:21:22,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [904878585] [2023-11-29 04:21:22,480 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 04:21:22,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:21:22,480 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20fa3149-1759-4248-b8ed-b547f5f91907/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:21:22,481 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20fa3149-1759-4248-b8ed-b547f5f91907/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:21:22,486 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20fa3149-1759-4248-b8ed-b547f5f91907/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 04:21:22,579 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 04:21:22,579 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:21:22,580 INFO L262 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 04:21:22,582 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:21:22,618 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 04:21:22,618 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:21:22,656 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 04:21:22,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [904878585] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:21:22,656 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:21:22,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 2, 2] total 12 [2023-11-29 04:21:22,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168234135] [2023-11-29 04:21:22,657 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:21:22,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-29 04:21:22,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:21:22,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-29 04:21:22,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2023-11-29 04:21:22,678 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 115 [2023-11-29 04:21:22,680 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 123 transitions, 391 flow. Second operand has 13 states, 13 states have (on average 56.61538461538461) internal successors, (736), 13 states have internal predecessors, (736), 0 states have call successors, (0), 0 states 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 04:21:22,680 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:21:22,680 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 115 [2023-11-29 04:21:22,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:21:32,896 INFO L124 PetriNetUnfolderBase]: 63499/113630 cut-off events. [2023-11-29 04:21:32,897 INFO L125 PetriNetUnfolderBase]: For 33237/38119 co-relation queries the response was YES. [2023-11-29 04:21:33,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 225235 conditions, 113630 events. 63499/113630 cut-off events. For 33237/38119 co-relation queries the response was YES. Maximal size of possible extension queue 4260. Compared 1195650 event pairs, 46729 based on Foata normal form. 1/96017 useless extension candidates. Maximal degree in co-relation 225218. Up to 84747 conditions per place. [2023-11-29 04:21:33,695 INFO L140 encePairwiseOnDemand]: 111/115 looper letters, 57 selfloop transitions, 8 changer transitions 0/117 dead transitions. [2023-11-29 04:21:33,696 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 117 transitions, 475 flow [2023-11-29 04:21:33,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 04:21:33,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-29 04:21:33,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 553 transitions. [2023-11-29 04:21:33,698 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5342995169082125 [2023-11-29 04:21:33,699 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 553 transitions. [2023-11-29 04:21:33,699 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 553 transitions. [2023-11-29 04:21:33,699 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:21:33,699 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 553 transitions. [2023-11-29 04:21:33,701 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 61.44444444444444) internal successors, (553), 9 states have internal predecessors, (553), 0 states have call successors, (0), 0 states 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 04:21:33,703 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 115.0) internal successors, (1150), 10 states have internal predecessors, (1150), 0 states have call successors, (0), 0 states 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 04:21:33,703 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 115.0) internal successors, (1150), 10 states have internal predecessors, (1150), 0 states have call successors, (0), 0 states 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 04:21:33,703 INFO L175 Difference]: Start difference. First operand has 137 places, 123 transitions, 391 flow. Second operand 9 states and 553 transitions. [2023-11-29 04:21:33,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 117 transitions, 475 flow [2023-11-29 04:21:33,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 117 transitions, 445 flow, removed 0 selfloop flow, removed 12 redundant places. [2023-11-29 04:21:33,748 INFO L231 Difference]: Finished difference. Result has 131 places, 117 transitions, 331 flow [2023-11-29 04:21:33,748 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=315, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=331, PETRI_PLACES=131, PETRI_TRANSITIONS=117} [2023-11-29 04:21:33,749 INFO L281 CegarLoopForPetriNet]: 104 programPoint places, 27 predicate places. [2023-11-29 04:21:33,749 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 117 transitions, 331 flow [2023-11-29 04:21:33,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 56.61538461538461) internal successors, (736), 13 states have internal predecessors, (736), 0 states have call successors, (0), 0 states 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 04:21:33,749 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:21:33,750 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:21:33,754 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20fa3149-1759-4248-b8ed-b547f5f91907/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-29 04:21:33,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20fa3149-1759-4248-b8ed-b547f5f91907/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-29 04:21:33,950 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-11-29 04:21:33,950 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:21:33,950 INFO L85 PathProgramCache]: Analyzing trace with hash 230252768, now seen corresponding path program 2 times [2023-11-29 04:21:33,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:21:33,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254288285] [2023-11-29 04:21:33,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:21:33,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:21:33,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:21:34,057 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-29 04:21:34,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:21:34,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254288285] [2023-11-29 04:21:34,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254288285] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:21:34,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2013685430] [2023-11-29 04:21:34,058 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 04:21:34,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:21:34,059 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20fa3149-1759-4248-b8ed-b547f5f91907/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:21:34,060 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20fa3149-1759-4248-b8ed-b547f5f91907/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:21:34,064 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20fa3149-1759-4248-b8ed-b547f5f91907/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 04:21:34,185 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 04:21:34,185 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:21:34,187 INFO L262 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 04:21:34,188 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:21:34,221 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-29 04:21:34,221 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:21:34,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2013685430] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:21:34,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:21:34,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2023-11-29 04:21:34,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97400885] [2023-11-29 04:21:34,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:21:34,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 04:21:34,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:21:34,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 04:21:34,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-29 04:21:34,231 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 115 [2023-11-29 04:21:34,232 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 117 transitions, 331 flow. Second operand has 5 states, 5 states have (on average 56.2) internal successors, (281), 5 states have internal predecessors, (281), 0 states have call successors, (0), 0 states 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 04:21:34,232 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:21:34,232 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 115 [2023-11-29 04:21:34,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:21:45,161 INFO L124 PetriNetUnfolderBase]: 74768/125289 cut-off events. [2023-11-29 04:21:45,161 INFO L125 PetriNetUnfolderBase]: For 33005/36879 co-relation queries the response was YES. [2023-11-29 04:21:45,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 256037 conditions, 125289 events. 74768/125289 cut-off events. For 33005/36879 co-relation queries the response was YES. Maximal size of possible extension queue 4591. Compared 1233137 event pairs, 43415 based on Foata normal form. 1106/108493 useless extension candidates. Maximal degree in co-relation 256024. Up to 78287 conditions per place. [2023-11-29 04:21:45,945 INFO L140 encePairwiseOnDemand]: 111/115 looper letters, 97 selfloop transitions, 5 changer transitions 0/151 dead transitions. [2023-11-29 04:21:45,945 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 151 transitions, 628 flow [2023-11-29 04:21:45,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:21:45,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 04:21:45,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 303 transitions. [2023-11-29 04:21:45,947 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.658695652173913 [2023-11-29 04:21:45,947 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 303 transitions. [2023-11-29 04:21:45,947 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 303 transitions. [2023-11-29 04:21:45,947 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:21:45,947 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 303 transitions. [2023-11-29 04:21:45,948 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 75.75) internal successors, (303), 4 states have internal predecessors, (303), 0 states have call successors, (0), 0 states 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 04:21:45,949 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 115.0) internal successors, (575), 5 states have internal predecessors, (575), 0 states have call successors, (0), 0 states 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 04:21:45,949 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 115.0) internal successors, (575), 5 states have internal predecessors, (575), 0 states have call successors, (0), 0 states 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 04:21:45,949 INFO L175 Difference]: Start difference. First operand has 131 places, 117 transitions, 331 flow. Second operand 4 states and 303 transitions. [2023-11-29 04:21:45,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 151 transitions, 628 flow [2023-11-29 04:21:46,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 151 transitions, 612 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-11-29 04:21:46,695 INFO L231 Difference]: Finished difference. Result has 125 places, 116 transitions, 321 flow [2023-11-29 04:21:46,695 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=311, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=321, PETRI_PLACES=125, PETRI_TRANSITIONS=116} [2023-11-29 04:21:46,696 INFO L281 CegarLoopForPetriNet]: 104 programPoint places, 21 predicate places. [2023-11-29 04:21:46,696 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 116 transitions, 321 flow [2023-11-29 04:21:46,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 56.2) internal successors, (281), 5 states have internal predecessors, (281), 0 states have call successors, (0), 0 states 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 04:21:46,696 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:21:46,697 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:21:46,701 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20fa3149-1759-4248-b8ed-b547f5f91907/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 04:21:46,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20fa3149-1759-4248-b8ed-b547f5f91907/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-29 04:21:46,897 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-11-29 04:21:46,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:21:46,898 INFO L85 PathProgramCache]: Analyzing trace with hash -2024794388, now seen corresponding path program 1 times [2023-11-29 04:21:46,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:21:46,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941679789] [2023-11-29 04:21:46,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:21:46,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:21:46,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:21:46,972 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-29 04:21:46,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:21:46,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941679789] [2023-11-29 04:21:46,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941679789] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:21:46,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:21:46,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 04:21:46,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574276220] [2023-11-29 04:21:46,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:21:46,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:21:46,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:21:46,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:21:46,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:21:46,975 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 115 [2023-11-29 04:21:46,975 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 116 transitions, 321 flow. Second operand has 4 states, 4 states have (on average 59.75) internal successors, (239), 4 states have internal predecessors, (239), 0 states have call successors, (0), 0 states 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 04:21:46,975 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:21:46,975 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 115 [2023-11-29 04:21:46,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:21:54,693 INFO L124 PetriNetUnfolderBase]: 56037/94362 cut-off events. [2023-11-29 04:21:54,693 INFO L125 PetriNetUnfolderBase]: For 43125/47208 co-relation queries the response was YES. [2023-11-29 04:21:54,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 199925 conditions, 94362 events. 56037/94362 cut-off events. For 43125/47208 co-relation queries the response was YES. Maximal size of possible extension queue 3120. Compared 898674 event pairs, 23811 based on Foata normal form. 0/84040 useless extension candidates. Maximal degree in co-relation 199912. Up to 42520 conditions per place. [2023-11-29 04:21:55,262 INFO L140 encePairwiseOnDemand]: 110/115 looper letters, 181 selfloop transitions, 4 changer transitions 0/236 dead transitions. [2023-11-29 04:21:55,262 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 236 transitions, 1101 flow [2023-11-29 04:21:55,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 04:21:55,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 04:21:55,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 443 transitions. [2023-11-29 04:21:55,264 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7704347826086957 [2023-11-29 04:21:55,264 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 443 transitions. [2023-11-29 04:21:55,264 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 443 transitions. [2023-11-29 04:21:55,264 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:21:55,264 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 443 transitions. [2023-11-29 04:21:55,265 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 88.6) internal successors, (443), 5 states have internal predecessors, (443), 0 states have call successors, (0), 0 states 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 04:21:55,266 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 115.0) internal successors, (690), 6 states have internal predecessors, (690), 0 states have call successors, (0), 0 states 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 04:21:55,266 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 115.0) internal successors, (690), 6 states have internal predecessors, (690), 0 states have call successors, (0), 0 states 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 04:21:55,266 INFO L175 Difference]: Start difference. First operand has 125 places, 116 transitions, 321 flow. Second operand 5 states and 443 transitions. [2023-11-29 04:21:55,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 236 transitions, 1101 flow [2023-11-29 04:21:55,503 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 236 transitions, 1067 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-29 04:21:55,506 INFO L231 Difference]: Finished difference. Result has 129 places, 118 transitions, 336 flow [2023-11-29 04:21:55,506 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=311, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=336, PETRI_PLACES=129, PETRI_TRANSITIONS=118} [2023-11-29 04:21:55,507 INFO L281 CegarLoopForPetriNet]: 104 programPoint places, 25 predicate places. [2023-11-29 04:21:55,507 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 118 transitions, 336 flow [2023-11-29 04:21:55,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 59.75) internal successors, (239), 4 states have internal predecessors, (239), 0 states have call successors, (0), 0 states 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 04:21:55,507 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:21:55,507 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-11-29 04:21:55,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-29 04:21:55,507 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-11-29 04:21:55,508 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:21:55,508 INFO L85 PathProgramCache]: Analyzing trace with hash -1452097654, now seen corresponding path program 1 times [2023-11-29 04:21:55,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:21:55,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722261346] [2023-11-29 04:21:55,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:21:55,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:21:55,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:21:55,566 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-29 04:21:55,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:21:55,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722261346] [2023-11-29 04:21:55,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722261346] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:21:55,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:21:55,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 04:21:55,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999127538] [2023-11-29 04:21:55,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:21:55,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:21:55,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:21:55,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:21:55,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:21:55,572 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 115 [2023-11-29 04:21:55,572 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 118 transitions, 336 flow. Second operand has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 0 states have call successors, (0), 0 states 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 04:21:55,572 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:21:55,572 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 115 [2023-11-29 04:21:55,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:22:03,797 INFO L124 PetriNetUnfolderBase]: 54277/95760 cut-off events. [2023-11-29 04:22:03,797 INFO L125 PetriNetUnfolderBase]: For 47873/51045 co-relation queries the response was YES. [2023-11-29 04:22:04,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 205968 conditions, 95760 events. 54277/95760 cut-off events. For 47873/51045 co-relation queries the response was YES. Maximal size of possible extension queue 3232. Compared 959562 event pairs, 37951 based on Foata normal form. 0/84471 useless extension candidates. Maximal degree in co-relation 205953. Up to 66616 conditions per place. [2023-11-29 04:22:04,553 INFO L140 encePairwiseOnDemand]: 112/115 looper letters, 100 selfloop transitions, 4 changer transitions 0/154 dead transitions. [2023-11-29 04:22:04,553 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 154 transitions, 662 flow [2023-11-29 04:22:04,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:22:04,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 04:22:04,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 250 transitions. [2023-11-29 04:22:04,555 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7246376811594203 [2023-11-29 04:22:04,555 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 250 transitions. [2023-11-29 04:22:04,555 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 250 transitions. [2023-11-29 04:22:04,555 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:22:04,555 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 250 transitions. [2023-11-29 04:22:04,555 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 83.33333333333333) internal successors, (250), 3 states have internal predecessors, (250), 0 states have call successors, (0), 0 states 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 04:22:04,556 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 115.0) internal successors, (460), 4 states have internal predecessors, (460), 0 states have call successors, (0), 0 states 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 04:22:04,556 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 115.0) internal successors, (460), 4 states have internal predecessors, (460), 0 states have call successors, (0), 0 states 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 04:22:04,556 INFO L175 Difference]: Start difference. First operand has 129 places, 118 transitions, 336 flow. Second operand 3 states and 250 transitions. [2023-11-29 04:22:04,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 154 transitions, 662 flow [2023-11-29 04:22:05,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 154 transitions, 662 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 04:22:05,117 INFO L231 Difference]: Finished difference. Result has 130 places, 117 transitions, 340 flow [2023-11-29 04:22:05,117 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=332, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=340, PETRI_PLACES=130, PETRI_TRANSITIONS=117} [2023-11-29 04:22:05,117 INFO L281 CegarLoopForPetriNet]: 104 programPoint places, 26 predicate places. [2023-11-29 04:22:05,117 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 117 transitions, 340 flow [2023-11-29 04:22:05,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 0 states have call successors, (0), 0 states 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 04:22:05,118 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:22:05,118 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:22:05,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-29 04:22:05,118 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-11-29 04:22:05,118 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:22:05,118 INFO L85 PathProgramCache]: Analyzing trace with hash 1686407448, now seen corresponding path program 1 times [2023-11-29 04:22:05,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:22:05,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019845681] [2023-11-29 04:22:05,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:22:05,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:22:05,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:22:05,218 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-29 04:22:05,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:22:05,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019845681] [2023-11-29 04:22:05,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019845681] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:22:05,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [157228927] [2023-11-29 04:22:05,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:22:05,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:22:05,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20fa3149-1759-4248-b8ed-b547f5f91907/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:22:05,221 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20fa3149-1759-4248-b8ed-b547f5f91907/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:22:05,225 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20fa3149-1759-4248-b8ed-b547f5f91907/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 04:22:05,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:22:05,352 INFO L262 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 04:22:05,353 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:22:05,381 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-29 04:22:05,381 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:22:05,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [157228927] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:22:05,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:22:05,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2023-11-29 04:22:05,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443002060] [2023-11-29 04:22:05,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:22:05,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 04:22:05,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:22:05,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 04:22:05,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-29 04:22:05,390 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 115 [2023-11-29 04:22:05,391 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 117 transitions, 340 flow. Second operand has 6 states, 6 states have (on average 57.0) internal successors, (342), 6 states have internal predecessors, (342), 0 states have call successors, (0), 0 states 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 04:22:05,391 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:22:05,391 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 115 [2023-11-29 04:22:05,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand