./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-nzb-file-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd76199-93bd-47f9-a8f0-d5045da5ec12/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd76199-93bd-47f9-a8f0-d5045da5ec12/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_4dd76199-93bd-47f9-a8f0-d5045da5ec12/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd76199-93bd-47f9-a8f0-d5045da5ec12/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-nzb-file-trans.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd76199-93bd-47f9-a8f0-d5045da5ec12/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_4dd76199-93bd-47f9-a8f0-d5045da5ec12/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 0d0975dc4466296431d96c26938a2e71864de63aba998f18ecd8a32ca341796b --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 00:41:29,902 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 00:41:29,967 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd76199-93bd-47f9-a8f0-d5045da5ec12/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-29 00:41:29,971 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 00:41:29,972 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 00:41:29,994 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 00:41:29,994 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 00:41:29,995 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 00:41:29,996 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 00:41:29,996 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 00:41:29,997 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 00:41:29,997 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 00:41:29,998 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 00:41:29,998 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 00:41:29,999 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 00:41:29,999 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 00:41:30,000 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 00:41:30,000 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 00:41:30,001 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 00:41:30,001 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 00:41:30,002 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 00:41:30,002 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 00:41:30,003 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 00:41:30,003 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 00:41:30,004 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-29 00:41:30,004 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 00:41:30,004 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 00:41:30,005 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 00:41:30,005 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 00:41:30,005 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 00:41:30,006 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 00:41:30,006 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 00:41:30,006 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 00:41:30,007 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 00:41:30,007 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 00:41:30,007 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 00:41:30,007 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 00:41:30,007 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 00:41:30,008 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 00:41:30,008 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 00:41:30,008 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 00:41:30,008 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 00:41:30,009 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 00:41:30,009 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 00:41:30,009 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_4dd76199-93bd-47f9-a8f0-d5045da5ec12/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd76199-93bd-47f9-a8f0-d5045da5ec12/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0d0975dc4466296431d96c26938a2e71864de63aba998f18ecd8a32ca341796b [2023-11-29 00:41:30,238 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 00:41:30,258 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 00:41:30,261 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 00:41:30,262 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 00:41:30,263 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 00:41:30,264 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd76199-93bd-47f9-a8f0-d5045da5ec12/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/weaver/chl-nzb-file-trans.wvr.c [2023-11-29 00:41:33,016 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 00:41:33,220 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 00:41:33,220 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd76199-93bd-47f9-a8f0-d5045da5ec12/sv-benchmarks/c/weaver/chl-nzb-file-trans.wvr.c [2023-11-29 00:41:33,231 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd76199-93bd-47f9-a8f0-d5045da5ec12/bin/uautomizer-verify-BQ2R08f2Ya/data/959751c57/8844607dda3f421fa0534bc37a12d892/FLAG064bd30ba [2023-11-29 00:41:33,246 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd76199-93bd-47f9-a8f0-d5045da5ec12/bin/uautomizer-verify-BQ2R08f2Ya/data/959751c57/8844607dda3f421fa0534bc37a12d892 [2023-11-29 00:41:33,249 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 00:41:33,251 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 00:41:33,252 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 00:41:33,253 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 00:41:33,258 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 00:41:33,259 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:41:33" (1/1) ... [2023-11-29 00:41:33,261 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f2f44d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:41:33, skipping insertion in model container [2023-11-29 00:41:33,261 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:41:33" (1/1) ... [2023-11-29 00:41:33,300 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 00:41:33,540 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 00:41:33,553 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 00:41:33,609 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 00:41:33,627 INFO L206 MainTranslator]: Completed translation [2023-11-29 00:41:33,627 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:41:33 WrapperNode [2023-11-29 00:41:33,628 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 00:41:33,629 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 00:41:33,629 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 00:41:33,629 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 00:41:33,636 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:41:33" (1/1) ... [2023-11-29 00:41:33,653 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:41:33" (1/1) ... [2023-11-29 00:41:33,716 INFO L138 Inliner]: procedures = 26, calls = 77, calls flagged for inlining = 29, calls inlined = 43, statements flattened = 740 [2023-11-29 00:41:33,717 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 00:41:33,718 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 00:41:33,718 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 00:41:33,718 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 00:41:33,731 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:41:33" (1/1) ... [2023-11-29 00:41:33,731 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:41:33" (1/1) ... [2023-11-29 00:41:33,740 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:41:33" (1/1) ... [2023-11-29 00:41:33,769 INFO L175 MemorySlicer]: Split 35 memory accesses to 5 slices as follows [2, 2, 27, 2, 2]. 77 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 6 writes are split as follows [0, 1, 3, 1, 1]. [2023-11-29 00:41:33,769 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:41:33" (1/1) ... [2023-11-29 00:41:33,769 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:41:33" (1/1) ... [2023-11-29 00:41:33,795 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:41:33" (1/1) ... [2023-11-29 00:41:33,805 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:41:33" (1/1) ... [2023-11-29 00:41:33,810 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:41:33" (1/1) ... [2023-11-29 00:41:33,815 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:41:33" (1/1) ... [2023-11-29 00:41:33,825 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 00:41:33,826 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 00:41:33,826 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 00:41:33,826 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 00:41:33,827 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:41:33" (1/1) ... [2023-11-29 00:41:33,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 00:41:33,851 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd76199-93bd-47f9-a8f0-d5045da5ec12/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:41:33,865 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd76199-93bd-47f9-a8f0-d5045da5ec12/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 00:41:33,876 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd76199-93bd-47f9-a8f0-d5045da5ec12/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 00:41:33,912 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 00:41:33,912 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 00:41:33,913 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 00:41:33,913 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-29 00:41:33,913 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-29 00:41:33,913 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-29 00:41:33,913 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-29 00:41:33,913 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-29 00:41:33,914 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-29 00:41:33,914 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-29 00:41:33,914 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-29 00:41:33,914 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-29 00:41:33,914 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-29 00:41:33,915 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-29 00:41:33,915 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-29 00:41:33,915 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-29 00:41:33,915 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-29 00:41:33,915 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-29 00:41:33,916 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 00:41:33,916 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 00:41:33,916 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 00:41:33,916 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-29 00:41:33,916 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-29 00:41:33,917 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-29 00:41:33,917 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 00:41:33,917 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 00:41:33,917 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 00:41:33,919 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 00:41:34,086 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 00:41:34,089 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 00:41:35,148 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 00:41:35,983 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 00:41:35,983 INFO L309 CfgBuilder]: Removed 6 assume(true) statements. [2023-11-29 00:41:35,984 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:41:35 BoogieIcfgContainer [2023-11-29 00:41:35,984 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 00:41:35,988 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 00:41:35,988 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 00:41:35,992 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 00:41:35,992 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 12:41:33" (1/3) ... [2023-11-29 00:41:35,993 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@622455cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 12:41:35, skipping insertion in model container [2023-11-29 00:41:35,993 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:41:33" (2/3) ... [2023-11-29 00:41:35,994 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@622455cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 12:41:35, skipping insertion in model container [2023-11-29 00:41:35,994 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:41:35" (3/3) ... [2023-11-29 00:41:35,996 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-nzb-file-trans.wvr.c [2023-11-29 00:41:36,008 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-29 00:41:36,023 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 00:41:36,023 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 60 error locations. [2023-11-29 00:41:36,023 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 00:41:36,241 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-29 00:41:36,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 221 places, 250 transitions, 521 flow [2023-11-29 00:41:36,397 INFO L124 PetriNetUnfolderBase]: 39/247 cut-off events. [2023-11-29 00:41:36,398 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-29 00:41:36,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 260 conditions, 247 events. 39/247 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1437 event pairs, 0 based on Foata normal form. 0/148 useless extension candidates. Maximal degree in co-relation 225. Up to 2 conditions per place. [2023-11-29 00:41:36,412 INFO L82 GeneralOperation]: Start removeDead. Operand has 221 places, 250 transitions, 521 flow [2023-11-29 00:41:36,427 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 216 places, 245 transitions, 505 flow [2023-11-29 00:41:36,439 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 00:41:36,447 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;@74b434c4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 00:41:36,448 INFO L358 AbstractCegarLoop]: Starting to check reachability of 117 error locations. [2023-11-29 00:41:36,468 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 00:41:36,469 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2023-11-29 00:41:36,469 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 00:41:36,469 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:41:36,470 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-29 00:41:36,471 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2023-11-29 00:41:36,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:41:36,477 INFO L85 PathProgramCache]: Analyzing trace with hash 2289972, now seen corresponding path program 1 times [2023-11-29 00:41:36,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:41:36,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806648863] [2023-11-29 00:41:36,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:41:36,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:41:36,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:41:36,823 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 00:41:36,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:41:36,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806648863] [2023-11-29 00:41:36,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806648863] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:41:36,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:41:36,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:41:36,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468796749] [2023-11-29 00:41:36,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:41:36,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:41:36,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:41:36,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:41:36,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:41:36,911 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 250 [2023-11-29 00:41:36,917 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 245 transitions, 505 flow. Second operand has 4 states, 4 states have (on average 126.75) internal successors, (507), 4 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:41:36,917 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:41:36,917 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 250 [2023-11-29 00:41:36,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:41:54,695 INFO L124 PetriNetUnfolderBase]: 113811/204994 cut-off events. [2023-11-29 00:41:54,695 INFO L125 PetriNetUnfolderBase]: For 2275/2275 co-relation queries the response was YES. [2023-11-29 00:41:55,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 352429 conditions, 204994 events. 113811/204994 cut-off events. For 2275/2275 co-relation queries the response was YES. Maximal size of possible extension queue 10481. Compared 2380908 event pairs, 74253 based on Foata normal form. 3681/167335 useless extension candidates. Maximal degree in co-relation 341590. Up to 145635 conditions per place. [2023-11-29 00:41:56,716 INFO L140 encePairwiseOnDemand]: 231/250 looper letters, 118 selfloop transitions, 10 changer transitions 0/251 dead transitions. [2023-11-29 00:41:56,717 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 251 transitions, 773 flow [2023-11-29 00:41:56,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:41:56,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 00:41:56,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 641 transitions. [2023-11-29 00:41:56,733 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.641 [2023-11-29 00:41:56,733 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 641 transitions. [2023-11-29 00:41:56,734 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 641 transitions. [2023-11-29 00:41:56,736 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:41:56,739 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 641 transitions. [2023-11-29 00:41:56,743 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 160.25) internal successors, (641), 4 states have internal predecessors, (641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:41:56,749 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 250.0) internal successors, (1250), 5 states have internal predecessors, (1250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:41:56,750 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 250.0) internal successors, (1250), 5 states have internal predecessors, (1250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:41:56,753 INFO L175 Difference]: Start difference. First operand has 216 places, 245 transitions, 505 flow. Second operand 4 states and 641 transitions. [2023-11-29 00:41:56,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 251 transitions, 773 flow [2023-11-29 00:41:56,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 251 transitions, 764 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-29 00:41:56,867 INFO L231 Difference]: Finished difference. Result has 217 places, 251 transitions, 578 flow [2023-11-29 00:41:56,870 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=250, PETRI_DIFFERENCE_MINUEND_FLOW=490, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=578, PETRI_PLACES=217, PETRI_TRANSITIONS=251} [2023-11-29 00:41:56,874 INFO L281 CegarLoopForPetriNet]: 216 programPoint places, 1 predicate places. [2023-11-29 00:41:56,875 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 251 transitions, 578 flow [2023-11-29 00:41:56,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 126.75) internal successors, (507), 4 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:41:56,876 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:41:56,876 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-29 00:41:56,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 00:41:56,877 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2023-11-29 00:41:56,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:41:56,878 INFO L85 PathProgramCache]: Analyzing trace with hash -496749115, now seen corresponding path program 1 times [2023-11-29 00:41:56,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:41:56,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308358251] [2023-11-29 00:41:56,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:41:56,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:41:56,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:41:57,025 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 00:41:57,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:41:57,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308358251] [2023-11-29 00:41:57,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308358251] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:41:57,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1599305134] [2023-11-29 00:41:57,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:41:57,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:41:57,027 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd76199-93bd-47f9-a8f0-d5045da5ec12/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:41:57,028 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd76199-93bd-47f9-a8f0-d5045da5ec12/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:41:57,030 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd76199-93bd-47f9-a8f0-d5045da5ec12/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 00:41:57,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:41:57,191 INFO L262 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 00:41:57,197 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:41:57,254 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 00:41:57,255 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:41:57,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1599305134] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:41:57,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 00:41:57,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-11-29 00:41:57,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035748730] [2023-11-29 00:41:57,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:41:57,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 00:41:57,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:41:57,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 00:41:57,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-29 00:41:57,288 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 250 [2023-11-29 00:41:57,290 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 251 transitions, 578 flow. Second operand has 6 states, 6 states have (on average 126.83333333333333) internal successors, (761), 6 states have internal predecessors, (761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:41:57,290 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:41:57,290 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 250 [2023-11-29 00:41:57,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:42:13,430 INFO L124 PetriNetUnfolderBase]: 113811/204991 cut-off events. [2023-11-29 00:42:13,430 INFO L125 PetriNetUnfolderBase]: For 561/561 co-relation queries the response was YES. [2023-11-29 00:42:13,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 351834 conditions, 204991 events. 113811/204991 cut-off events. For 561/561 co-relation queries the response was YES. Maximal size of possible extension queue 10482. Compared 2380936 event pairs, 74253 based on Foata normal form. 3/163659 useless extension candidates. Maximal degree in co-relation 351761. Up to 145620 conditions per place. [2023-11-29 00:42:14,827 INFO L140 encePairwiseOnDemand]: 237/250 looper letters, 108 selfloop transitions, 17 changer transitions 0/248 dead transitions. [2023-11-29 00:42:14,827 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 248 transitions, 816 flow [2023-11-29 00:42:14,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 00:42:14,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 00:42:14,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 884 transitions. [2023-11-29 00:42:14,831 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5893333333333334 [2023-11-29 00:42:14,831 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 884 transitions. [2023-11-29 00:42:14,832 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 884 transitions. [2023-11-29 00:42:14,832 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:42:14,833 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 884 transitions. [2023-11-29 00:42:14,836 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 147.33333333333334) internal successors, (884), 6 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:42:14,841 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 250.0) internal successors, (1750), 7 states have internal predecessors, (1750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:42:14,842 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 250.0) internal successors, (1750), 7 states have internal predecessors, (1750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:42:14,842 INFO L175 Difference]: Start difference. First operand has 217 places, 251 transitions, 578 flow. Second operand 6 states and 884 transitions. [2023-11-29 00:42:14,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 248 transitions, 816 flow [2023-11-29 00:42:14,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 248 transitions, 816 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 00:42:14,851 INFO L231 Difference]: Finished difference. Result has 219 places, 248 transitions, 600 flow [2023-11-29 00:42:14,851 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=250, PETRI_DIFFERENCE_MINUEND_FLOW=566, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=600, PETRI_PLACES=219, PETRI_TRANSITIONS=248} [2023-11-29 00:42:14,852 INFO L281 CegarLoopForPetriNet]: 216 programPoint places, 3 predicate places. [2023-11-29 00:42:14,853 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 248 transitions, 600 flow [2023-11-29 00:42:14,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 126.83333333333333) internal successors, (761), 6 states have internal predecessors, (761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:42:14,854 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:42:14,854 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2023-11-29 00:42:14,861 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd76199-93bd-47f9-a8f0-d5045da5ec12/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-29 00:42:15,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd76199-93bd-47f9-a8f0-d5045da5ec12/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:42:15,055 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2023-11-29 00:42:15,055 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:42:15,055 INFO L85 PathProgramCache]: Analyzing trace with hash 1780648804, now seen corresponding path program 1 times [2023-11-29 00:42:15,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:42:15,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790872690] [2023-11-29 00:42:15,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:42:15,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:42:15,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:42:15,151 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 00:42:15,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:42:15,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790872690] [2023-11-29 00:42:15,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790872690] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:42:15,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2035211566] [2023-11-29 00:42:15,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:42:15,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:42:15,153 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd76199-93bd-47f9-a8f0-d5045da5ec12/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:42:15,154 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd76199-93bd-47f9-a8f0-d5045da5ec12/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:42:15,158 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd76199-93bd-47f9-a8f0-d5045da5ec12/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 00:42:15,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:42:15,290 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 00:42:15,291 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:42:15,313 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 00:42:15,314 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:42:15,354 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 00:42:15,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2035211566] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:42:15,354 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:42:15,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2023-11-29 00:42:15,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276307521] [2023-11-29 00:42:15,355 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:42:15,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 00:42:15,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:42:15,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 00:42:15,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-11-29 00:42:15,387 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 250 [2023-11-29 00:42:15,390 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 248 transitions, 600 flow. Second operand has 12 states, 12 states have (on average 127.08333333333333) internal successors, (1525), 12 states have internal predecessors, (1525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:42:15,390 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:42:15,390 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 250 [2023-11-29 00:42:15,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:42:32,325 INFO L124 PetriNetUnfolderBase]: 113820/205027 cut-off events. [2023-11-29 00:42:32,325 INFO L125 PetriNetUnfolderBase]: For 626/626 co-relation queries the response was YES. [2023-11-29 00:42:32,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 351975 conditions, 205027 events. 113820/205027 cut-off events. For 626/626 co-relation queries the response was YES. Maximal size of possible extension queue 10482. Compared 2381591 event pairs, 74253 based on Foata normal form. 9/163701 useless extension candidates. Maximal degree in co-relation 351763. Up to 145635 conditions per place. [2023-11-29 00:42:33,814 INFO L140 encePairwiseOnDemand]: 237/250 looper letters, 115 selfloop transitions, 37 changer transitions 0/275 dead transitions. [2023-11-29 00:42:33,815 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 275 transitions, 1078 flow [2023-11-29 00:42:33,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 00:42:33,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 00:42:33,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1421 transitions. [2023-11-29 00:42:33,820 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5684 [2023-11-29 00:42:33,820 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1421 transitions. [2023-11-29 00:42:33,820 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1421 transitions. [2023-11-29 00:42:33,821 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:42:33,821 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1421 transitions. [2023-11-29 00:42:33,827 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 142.1) internal successors, (1421), 10 states have internal predecessors, (1421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:42:33,834 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 250.0) internal successors, (2750), 11 states have internal predecessors, (2750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:42:33,837 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 250.0) internal successors, (2750), 11 states have internal predecessors, (2750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:42:33,837 INFO L175 Difference]: Start difference. First operand has 219 places, 248 transitions, 600 flow. Second operand 10 states and 1421 transitions. [2023-11-29 00:42:33,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 275 transitions, 1078 flow [2023-11-29 00:42:33,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 275 transitions, 995 flow, removed 16 selfloop flow, removed 5 redundant places. [2023-11-29 00:42:33,850 INFO L231 Difference]: Finished difference. Result has 226 places, 275 transitions, 815 flow [2023-11-29 00:42:33,850 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=250, PETRI_DIFFERENCE_MINUEND_FLOW=562, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=815, PETRI_PLACES=226, PETRI_TRANSITIONS=275} [2023-11-29 00:42:33,851 INFO L281 CegarLoopForPetriNet]: 216 programPoint places, 10 predicate places. [2023-11-29 00:42:33,852 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 275 transitions, 815 flow [2023-11-29 00:42:33,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 127.08333333333333) internal successors, (1525), 12 states have internal predecessors, (1525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:42:33,854 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:42:33,854 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:42:33,860 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd76199-93bd-47f9-a8f0-d5045da5ec12/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 00:42:34,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd76199-93bd-47f9-a8f0-d5045da5ec12/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:42:34,055 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2023-11-29 00:42:34,055 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:42:34,055 INFO L85 PathProgramCache]: Analyzing trace with hash 1716141362, now seen corresponding path program 1 times [2023-11-29 00:42:34,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:42:34,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533403929] [2023-11-29 00:42:34,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:42:34,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:42:34,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:42:34,141 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 00:42:34,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:42:34,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533403929] [2023-11-29 00:42:34,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533403929] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:42:34,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:42:34,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:42:34,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827644586] [2023-11-29 00:42:34,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:42:34,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:42:34,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:42:34,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:42:34,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:42:34,144 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 250 [2023-11-29 00:42:34,145 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 275 transitions, 815 flow. Second operand has 3 states, 3 states have (on average 134.66666666666666) internal successors, (404), 3 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:42:34,146 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:42:34,146 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 250 [2023-11-29 00:42:34,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:42:51,232 INFO L124 PetriNetUnfolderBase]: 113817/205024 cut-off events. [2023-11-29 00:42:51,232 INFO L125 PetriNetUnfolderBase]: For 655/655 co-relation queries the response was YES. [2023-11-29 00:42:51,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 351985 conditions, 205024 events. 113817/205024 cut-off events. For 655/655 co-relation queries the response was YES. Maximal size of possible extension queue 10482. Compared 2381481 event pairs, 74253 based on Foata normal form. 3/163693 useless extension candidates. Maximal degree in co-relation 351887. Up to 145649 conditions per place. [2023-11-29 00:42:52,626 INFO L140 encePairwiseOnDemand]: 243/250 looper letters, 134 selfloop transitions, 12 changer transitions 0/272 dead transitions. [2023-11-29 00:42:52,627 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 272 transitions, 1093 flow [2023-11-29 00:42:52,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:42:52,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 00:42:52,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 518 transitions. [2023-11-29 00:42:52,630 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6906666666666667 [2023-11-29 00:42:52,630 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 518 transitions. [2023-11-29 00:42:52,630 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 518 transitions. [2023-11-29 00:42:52,631 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:42:52,631 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 518 transitions. [2023-11-29 00:42:52,633 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 172.66666666666666) internal successors, (518), 3 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:42:52,634 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 250.0) internal successors, (1000), 4 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:42:52,635 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 250.0) internal successors, (1000), 4 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:42:52,635 INFO L175 Difference]: Start difference. First operand has 226 places, 275 transitions, 815 flow. Second operand 3 states and 518 transitions. [2023-11-29 00:42:52,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 272 transitions, 1093 flow [2023-11-29 00:42:52,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 272 transitions, 1045 flow, removed 9 selfloop flow, removed 3 redundant places. [2023-11-29 00:42:52,642 INFO L231 Difference]: Finished difference. Result has 225 places, 272 transitions, 777 flow [2023-11-29 00:42:52,643 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=250, PETRI_DIFFERENCE_MINUEND_FLOW=753, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=777, PETRI_PLACES=225, PETRI_TRANSITIONS=272} [2023-11-29 00:42:52,643 INFO L281 CegarLoopForPetriNet]: 216 programPoint places, 9 predicate places. [2023-11-29 00:42:52,643 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 272 transitions, 777 flow [2023-11-29 00:42:52,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 134.66666666666666) internal successors, (404), 3 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:42:52,644 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:42:52,644 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2023-11-29 00:42:52,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 00:42:52,644 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2023-11-29 00:42:52,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:42:52,645 INFO L85 PathProgramCache]: Analyzing trace with hash -852014827, now seen corresponding path program 2 times [2023-11-29 00:42:52,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:42:52,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927115306] [2023-11-29 00:42:52,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:42:52,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:42:52,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:42:52,814 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:42:52,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:42:52,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927115306] [2023-11-29 00:42:52,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927115306] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:42:52,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1598592607] [2023-11-29 00:42:52,815 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 00:42:52,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:42:52,815 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd76199-93bd-47f9-a8f0-d5045da5ec12/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:42:52,816 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd76199-93bd-47f9-a8f0-d5045da5ec12/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:42:52,822 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd76199-93bd-47f9-a8f0-d5045da5ec12/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 00:42:52,959 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 00:42:52,959 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:42:52,960 INFO L262 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 00:42:52,962 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:42:53,001 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 00:42:53,001 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:42:53,058 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 00:42:53,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1598592607] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:42:53,059 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:42:53,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 13 [2023-11-29 00:42:53,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985062333] [2023-11-29 00:42:53,060 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:42:53,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-29 00:42:53,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:42:53,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-29 00:42:53,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2023-11-29 00:42:53,118 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 250 [2023-11-29 00:42:53,120 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 272 transitions, 777 flow. Second operand has 15 states, 15 states have (on average 127.33333333333333) internal successors, (1910), 15 states have internal predecessors, (1910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:42:53,120 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:42:53,120 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 250 [2023-11-29 00:42:53,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:43:11,165 INFO L124 PetriNetUnfolderBase]: 113820/205027 cut-off events. [2023-11-29 00:43:11,165 INFO L125 PetriNetUnfolderBase]: For 631/631 co-relation queries the response was YES. [2023-11-29 00:43:11,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 351976 conditions, 205027 events. 113820/205027 cut-off events. For 631/631 co-relation queries the response was YES. Maximal size of possible extension queue 10482. Compared 2381247 event pairs, 74253 based on Foata normal form. 3/163697 useless extension candidates. Maximal degree in co-relation 351874. Up to 145623 conditions per place. [2023-11-29 00:43:12,591 INFO L140 encePairwiseOnDemand]: 237/250 looper letters, 103 selfloop transitions, 49 changer transitions 0/275 dead transitions. [2023-11-29 00:43:12,591 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 275 transitions, 1088 flow [2023-11-29 00:43:12,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 00:43:12,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-29 00:43:12,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1793 transitions. [2023-11-29 00:43:12,598 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5516923076923077 [2023-11-29 00:43:12,598 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1793 transitions. [2023-11-29 00:43:12,598 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1793 transitions. [2023-11-29 00:43:12,599 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:43:12,599 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1793 transitions. [2023-11-29 00:43:12,604 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 137.92307692307693) internal successors, (1793), 13 states have internal predecessors, (1793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:12,609 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 250.0) internal successors, (3500), 14 states have internal predecessors, (3500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:12,611 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 250.0) internal successors, (3500), 14 states have internal predecessors, (3500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:12,611 INFO L175 Difference]: Start difference. First operand has 225 places, 272 transitions, 777 flow. Second operand 13 states and 1793 transitions. [2023-11-29 00:43:12,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 275 transitions, 1088 flow [2023-11-29 00:43:12,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 275 transitions, 1030 flow, removed 3 selfloop flow, removed 6 redundant places. [2023-11-29 00:43:12,617 INFO L231 Difference]: Finished difference. Result has 228 places, 275 transitions, 824 flow [2023-11-29 00:43:12,618 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=250, PETRI_DIFFERENCE_MINUEND_FLOW=693, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=824, PETRI_PLACES=228, PETRI_TRANSITIONS=275} [2023-11-29 00:43:12,619 INFO L281 CegarLoopForPetriNet]: 216 programPoint places, 12 predicate places. [2023-11-29 00:43:12,619 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 275 transitions, 824 flow [2023-11-29 00:43:12,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 127.33333333333333) internal successors, (1910), 15 states have internal predecessors, (1910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:12,621 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:43:12,621 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:43:12,626 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd76199-93bd-47f9-a8f0-d5045da5ec12/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 00:43:12,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dd76199-93bd-47f9-a8f0-d5045da5ec12/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:43:12,822 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2023-11-29 00:43:12,822 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:43:12,822 INFO L85 PathProgramCache]: Analyzing trace with hash -239745642, now seen corresponding path program 1 times [2023-11-29 00:43:12,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:43:12,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638183212] [2023-11-29 00:43:12,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:43:12,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:43:12,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:43:12,902 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 00:43:12,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:43:12,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638183212] [2023-11-29 00:43:12,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638183212] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:43:12,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:43:12,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:43:12,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866637867] [2023-11-29 00:43:12,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:43:12,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:43:12,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:43:12,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:43:12,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:43:12,943 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 250 [2023-11-29 00:43:12,944 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 275 transitions, 824 flow. Second operand has 4 states, 4 states have (on average 124.0) internal successors, (496), 4 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:12,944 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:43:12,944 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 250 [2023-11-29 00:43:12,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:43:37,016 INFO L124 PetriNetUnfolderBase]: 180927/306107 cut-off events. [2023-11-29 00:43:37,016 INFO L125 PetriNetUnfolderBase]: For 628/628 co-relation queries the response was YES. [2023-11-29 00:43:37,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 541371 conditions, 306107 events. 180927/306107 cut-off events. For 628/628 co-relation queries the response was YES. Maximal size of possible extension queue 14538. Compared 3430297 event pairs, 69823 based on Foata normal form. 5624/253142 useless extension candidates. Maximal degree in co-relation 541126. Up to 137634 conditions per place. [2023-11-29 00:43:39,120 INFO L140 encePairwiseOnDemand]: 234/250 looper letters, 294 selfloop transitions, 10 changer transitions 0/415 dead transitions. [2023-11-29 00:43:39,120 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 415 transitions, 1718 flow [2023-11-29 00:43:39,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:43:39,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 00:43:39,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 751 transitions. [2023-11-29 00:43:39,124 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.751 [2023-11-29 00:43:39,124 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 751 transitions. [2023-11-29 00:43:39,124 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 751 transitions. [2023-11-29 00:43:39,125 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:43:39,125 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 751 transitions. [2023-11-29 00:43:39,127 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 187.75) internal successors, (751), 4 states have internal predecessors, (751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:39,130 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 250.0) internal successors, (1250), 5 states have internal predecessors, (1250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:39,130 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 250.0) internal successors, (1250), 5 states have internal predecessors, (1250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:39,131 INFO L175 Difference]: Start difference. First operand has 228 places, 275 transitions, 824 flow. Second operand 4 states and 751 transitions. [2023-11-29 00:43:39,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 415 transitions, 1718 flow [2023-11-29 00:43:39,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 415 transitions, 1542 flow, removed 11 selfloop flow, removed 12 redundant places. [2023-11-29 00:43:39,142 INFO L231 Difference]: Finished difference. Result has 220 places, 279 transitions, 716 flow [2023-11-29 00:43:39,142 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=250, PETRI_DIFFERENCE_MINUEND_FLOW=644, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=716, PETRI_PLACES=220, PETRI_TRANSITIONS=279} [2023-11-29 00:43:39,143 INFO L281 CegarLoopForPetriNet]: 216 programPoint places, 4 predicate places. [2023-11-29 00:43:39,143 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 279 transitions, 716 flow [2023-11-29 00:43:39,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 124.0) internal successors, (496), 4 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:39,144 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:43:39,144 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:43:39,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 00:43:39,144 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2023-11-29 00:43:39,145 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:43:39,145 INFO L85 PathProgramCache]: Analyzing trace with hash -238759592, now seen corresponding path program 1 times [2023-11-29 00:43:39,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:43:39,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584193450] [2023-11-29 00:43:39,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:43:39,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:43:39,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:43:39,224 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 00:43:39,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:43:39,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584193450] [2023-11-29 00:43:39,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584193450] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:43:39,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:43:39,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:43:39,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922977546] [2023-11-29 00:43:39,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:43:39,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:43:39,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:43:39,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:43:39,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:43:39,236 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 250 [2023-11-29 00:43:39,237 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 279 transitions, 716 flow. Second operand has 3 states, 3 states have (on average 133.0) internal successors, (399), 3 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:39,237 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:43:39,237 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 250 [2023-11-29 00:43:39,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand