./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-exp-term-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 4fc63b2a 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_c5c7824f-35f6-4ee7-8d97-e33ce199e927/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c7824f-35f6-4ee7-8d97-e33ce199e927/bin/uautomizer-verify-4GaUIPS5ZU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c7824f-35f6-4ee7-8d97-e33ce199e927/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c7824f-35f6-4ee7-8d97-e33ce199e927/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-exp-term-subst.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c7824f-35f6-4ee7-8d97-e33ce199e927/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c7824f-35f6-4ee7-8d97-e33ce199e927/bin/uautomizer-verify-4GaUIPS5ZU --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 2a508120cc7913f10b79dda7ca65a8b88f829725798d520aee5d1c1d04a1fc13 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 22:03:50,725 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 22:03:50,842 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c7824f-35f6-4ee7-8d97-e33ce199e927/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-31 22:03:50,854 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 22:03:50,855 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 22:03:50,899 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 22:03:50,901 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 22:03:50,902 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 22:03:50,903 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 22:03:50,903 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 22:03:50,904 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 22:03:50,904 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 22:03:50,905 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 22:03:50,905 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 22:03:50,907 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 22:03:50,909 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 22:03:50,910 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-31 22:03:50,913 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 22:03:50,914 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 22:03:50,914 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 22:03:50,915 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 22:03:50,915 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-31 22:03:50,916 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 22:03:50,916 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-31 22:03:50,916 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 22:03:50,917 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-31 22:03:50,917 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-31 22:03:50,917 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 22:03:50,917 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 22:03:50,918 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 22:03:50,918 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 22:03:50,918 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 22:03:50,921 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-31 22:03:50,921 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 22:03:50,922 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:03:50,922 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 22:03:50,923 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 22:03:50,923 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-31 22:03:50,923 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 22:03:50,923 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 22:03:50,924 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 22:03:50,927 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 22:03:50,927 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 22:03:50,927 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 22:03:50,928 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_c5c7824f-35f6-4ee7-8d97-e33ce199e927/bin/uautomizer-verify-4GaUIPS5ZU/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c7824f-35f6-4ee7-8d97-e33ce199e927/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2a508120cc7913f10b79dda7ca65a8b88f829725798d520aee5d1c1d04a1fc13 [2024-10-31 22:03:51,330 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 22:03:51,387 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 22:03:51,395 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 22:03:51,397 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 22:03:51,401 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 22:03:51,402 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c7824f-35f6-4ee7-8d97-e33ce199e927/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/weaver/chl-exp-term-subst.wvr.c Unable to find full path for "g++" [2024-10-31 22:03:53,650 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 22:03:53,848 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 22:03:53,849 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c7824f-35f6-4ee7-8d97-e33ce199e927/sv-benchmarks/c/weaver/chl-exp-term-subst.wvr.c [2024-10-31 22:03:53,861 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c7824f-35f6-4ee7-8d97-e33ce199e927/bin/uautomizer-verify-4GaUIPS5ZU/data/d331e2e84/7457cf03079e46a9b8172049ef90418a/FLAGf4a81a2ef [2024-10-31 22:03:54,217 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c7824f-35f6-4ee7-8d97-e33ce199e927/bin/uautomizer-verify-4GaUIPS5ZU/data/d331e2e84/7457cf03079e46a9b8172049ef90418a [2024-10-31 22:03:54,221 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 22:03:54,224 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 22:03:54,228 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 22:03:54,228 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 22:03:54,235 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 22:03:54,236 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:03:54" (1/1) ... [2024-10-31 22:03:54,237 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52a69cc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:03:54, skipping insertion in model container [2024-10-31 22:03:54,238 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:03:54" (1/1) ... [2024-10-31 22:03:54,266 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 22:03:54,563 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:03:54,578 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 22:03:54,628 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:03:54,652 INFO L204 MainTranslator]: Completed translation [2024-10-31 22:03:54,653 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:03:54 WrapperNode [2024-10-31 22:03:54,653 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 22:03:54,655 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 22:03:54,655 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 22:03:54,656 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 22:03:54,666 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:03:54" (1/1) ... [2024-10-31 22:03:54,680 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:03:54" (1/1) ... [2024-10-31 22:03:54,725 INFO L138 Inliner]: procedures = 22, calls = 17, calls flagged for inlining = 10, calls inlined = 14, statements flattened = 213 [2024-10-31 22:03:54,729 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 22:03:54,730 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 22:03:54,730 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 22:03:54,730 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 22:03:54,749 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:03:54" (1/1) ... [2024-10-31 22:03:54,750 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:03:54" (1/1) ... [2024-10-31 22:03:54,757 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:03:54" (1/1) ... [2024-10-31 22:03:54,791 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-31 22:03:54,794 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:03:54" (1/1) ... [2024-10-31 22:03:54,794 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:03:54" (1/1) ... [2024-10-31 22:03:54,804 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:03:54" (1/1) ... [2024-10-31 22:03:54,810 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:03:54" (1/1) ... [2024-10-31 22:03:54,816 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:03:54" (1/1) ... [2024-10-31 22:03:54,818 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:03:54" (1/1) ... [2024-10-31 22:03:54,824 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 22:03:54,825 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 22:03:54,826 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 22:03:54,826 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 22:03:54,827 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:03:54" (1/1) ... [2024-10-31 22:03:54,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:03:54,855 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c7824f-35f6-4ee7-8d97-e33ce199e927/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:03:54,871 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c7824f-35f6-4ee7-8d97-e33ce199e927/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 22:03:54,876 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c7824f-35f6-4ee7-8d97-e33ce199e927/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 22:03:54,913 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 22:03:54,913 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-31 22:03:54,913 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-31 22:03:54,913 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-31 22:03:54,914 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-31 22:03:54,914 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-31 22:03:54,914 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-31 22:03:54,914 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-31 22:03:54,916 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 22:03:54,917 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 22:03:54,920 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-31 22:03:55,072 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 22:03:55,075 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 22:03:55,638 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-31 22:03:55,638 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 22:03:56,051 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 22:03:56,052 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-31 22:03:56,052 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:03:56 BoogieIcfgContainer [2024-10-31 22:03:56,053 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 22:03:56,058 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 22:03:56,060 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 22:03:56,064 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 22:03:56,064 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 10:03:54" (1/3) ... [2024-10-31 22:03:56,065 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62ebd6fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:03:56, skipping insertion in model container [2024-10-31 22:03:56,065 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:03:54" (2/3) ... [2024-10-31 22:03:56,066 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62ebd6fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:03:56, skipping insertion in model container [2024-10-31 22:03:56,068 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:03:56" (3/3) ... [2024-10-31 22:03:56,070 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-exp-term-subst.wvr.c [2024-10-31 22:03:56,091 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 22:03:56,092 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2024-10-31 22:03:56,092 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-31 22:03:56,197 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-31 22:03:56,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 93 places, 98 transitions, 217 flow [2024-10-31 22:03:56,327 INFO L124 PetriNetUnfolderBase]: 15/95 cut-off events. [2024-10-31 22:03:56,327 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-31 22:03:56,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108 conditions, 95 events. 15/95 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 350 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 93. Up to 2 conditions per place. [2024-10-31 22:03:56,339 INFO L82 GeneralOperation]: Start removeDead. Operand has 93 places, 98 transitions, 217 flow [2024-10-31 22:03:56,346 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 88 places, 93 transitions, 201 flow [2024-10-31 22:03:56,361 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:03:56,376 INFO L333 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, 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;@43eaf993, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:03:56,377 INFO L334 AbstractCegarLoop]: Starting to check reachability of 39 error locations. [2024-10-31 22:03:56,392 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-31 22:03:56,392 INFO L124 PetriNetUnfolderBase]: 3/28 cut-off events. [2024-10-31 22:03:56,393 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-31 22:03:56,393 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:03:56,394 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:03:56,395 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-10-31 22:03:56,402 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:03:56,404 INFO L85 PathProgramCache]: Analyzing trace with hash 107540757, now seen corresponding path program 1 times [2024-10-31 22:03:56,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:03:56,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104158253] [2024-10-31 22:03:56,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:03:56,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:03:56,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:03:56,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:03:56,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:03:56,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104158253] [2024-10-31 22:03:56,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104158253] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:03:56,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:03:56,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:03:56,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687465386] [2024-10-31 22:03:56,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:03:56,923 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:03:56,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:03:56,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:03:56,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:03:57,022 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 98 [2024-10-31 22:03:57,025 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 93 transitions, 201 flow. Second operand has 4 states, 4 states have (on average 52.25) internal successors, (209), 4 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:03:57,025 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:03:57,025 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 98 [2024-10-31 22:03:57,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:03:59,865 INFO L124 PetriNetUnfolderBase]: 11126/17819 cut-off events. [2024-10-31 22:03:59,865 INFO L125 PetriNetUnfolderBase]: For 290/290 co-relation queries the response was YES. [2024-10-31 22:03:59,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32962 conditions, 17819 events. 11126/17819 cut-off events. For 290/290 co-relation queries the response was YES. Maximal size of possible extension queue 1085. Compared 141566 event pairs, 3987 based on Foata normal form. 444/15003 useless extension candidates. Maximal degree in co-relation 32117. Up to 7687 conditions per place. [2024-10-31 22:04:00,095 INFO L140 encePairwiseOnDemand]: 90/98 looper letters, 93 selfloop transitions, 5 changer transitions 0/146 dead transitions. [2024-10-31 22:04:00,095 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 146 transitions, 515 flow [2024-10-31 22:04:00,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:04:00,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-31 22:04:00,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 305 transitions. [2024-10-31 22:04:00,110 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7780612244897959 [2024-10-31 22:04:00,112 INFO L175 Difference]: Start difference. First operand has 88 places, 93 transitions, 201 flow. Second operand 4 states and 305 transitions. [2024-10-31 22:04:00,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 146 transitions, 515 flow [2024-10-31 22:04:00,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 146 transitions, 500 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-31 22:04:00,129 INFO L231 Difference]: Finished difference. Result has 88 places, 95 transitions, 226 flow [2024-10-31 22:04:00,131 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=226, PETRI_PLACES=88, PETRI_TRANSITIONS=95} [2024-10-31 22:04:00,136 INFO L277 CegarLoopForPetriNet]: 88 programPoint places, 0 predicate places. [2024-10-31 22:04:00,137 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 95 transitions, 226 flow [2024-10-31 22:04:00,138 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 52.25) internal successors, (209), 4 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:04:00,138 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:04:00,139 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:04:00,139 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-31 22:04:00,140 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-10-31 22:04:00,140 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:04:00,141 INFO L85 PathProgramCache]: Analyzing trace with hash -961203097, now seen corresponding path program 1 times [2024-10-31 22:04:00,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:04:00,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200797521] [2024-10-31 22:04:00,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:04:00,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:04:00,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:00,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:04:00,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:04:00,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200797521] [2024-10-31 22:04:00,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200797521] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:04:00,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:04:00,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:04:00,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440750713] [2024-10-31 22:04:00,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:04:00,325 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:04:00,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:04:00,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:04:00,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:04:00,377 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 98 [2024-10-31 22:04:00,378 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 95 transitions, 226 flow. Second operand has 4 states, 4 states have (on average 55.0) internal successors, (220), 4 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:04:00,378 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:04:00,378 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 98 [2024-10-31 22:04:00,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:04:02,336 INFO L124 PetriNetUnfolderBase]: 8257/14973 cut-off events. [2024-10-31 22:04:02,337 INFO L125 PetriNetUnfolderBase]: For 2854/2874 co-relation queries the response was YES. [2024-10-31 22:04:02,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29073 conditions, 14973 events. 8257/14973 cut-off events. For 2854/2874 co-relation queries the response was YES. Maximal size of possible extension queue 933. Compared 132562 event pairs, 2320 based on Foata normal form. 20/12961 useless extension candidates. Maximal degree in co-relation 16338. Up to 6222 conditions per place. [2024-10-31 22:04:02,462 INFO L140 encePairwiseOnDemand]: 94/98 looper letters, 63 selfloop transitions, 4 changer transitions 0/119 dead transitions. [2024-10-31 22:04:02,462 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 119 transitions, 411 flow [2024-10-31 22:04:02,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:04:02,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-31 22:04:02,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 282 transitions. [2024-10-31 22:04:02,468 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7193877551020408 [2024-10-31 22:04:02,468 INFO L175 Difference]: Start difference. First operand has 88 places, 95 transitions, 226 flow. Second operand 4 states and 282 transitions. [2024-10-31 22:04:02,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 119 transitions, 411 flow [2024-10-31 22:04:02,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 119 transitions, 411 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-31 22:04:02,649 INFO L231 Difference]: Finished difference. Result has 90 places, 94 transitions, 232 flow [2024-10-31 22:04:02,649 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=232, PETRI_PLACES=90, PETRI_TRANSITIONS=94} [2024-10-31 22:04:02,650 INFO L277 CegarLoopForPetriNet]: 88 programPoint places, 2 predicate places. [2024-10-31 22:04:02,650 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 94 transitions, 232 flow [2024-10-31 22:04:02,651 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 55.0) internal successors, (220), 4 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:04:02,651 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:04:02,651 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:04:02,651 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-31 22:04:02,652 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-10-31 22:04:02,653 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:04:02,653 INFO L85 PathProgramCache]: Analyzing trace with hash -476424384, now seen corresponding path program 1 times [2024-10-31 22:04:02,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:04:02,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346031506] [2024-10-31 22:04:02,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:04:02,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:04:02,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:02,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:04:02,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:04:02,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346031506] [2024-10-31 22:04:02,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346031506] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:04:02,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:04:02,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:04:02,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215678401] [2024-10-31 22:04:02,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:04:02,806 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:04:02,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:04:02,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:04:02,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:04:02,836 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 98 [2024-10-31 22:04:02,837 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 94 transitions, 232 flow. Second operand has 4 states, 4 states have (on average 52.75) internal successors, (211), 4 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:04:02,837 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:04:02,838 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 98 [2024-10-31 22:04:02,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:04:05,623 INFO L124 PetriNetUnfolderBase]: 13404/22500 cut-off events. [2024-10-31 22:04:05,624 INFO L125 PetriNetUnfolderBase]: For 7387/8100 co-relation queries the response was YES. [2024-10-31 22:04:05,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45221 conditions, 22500 events. 13404/22500 cut-off events. For 7387/8100 co-relation queries the response was YES. Maximal size of possible extension queue 1343. Compared 194633 event pairs, 4867 based on Foata normal form. 905/19695 useless extension candidates. Maximal degree in co-relation 26814. Up to 9225 conditions per place. [2024-10-31 22:04:05,846 INFO L140 encePairwiseOnDemand]: 90/98 looper letters, 97 selfloop transitions, 5 changer transitions 0/149 dead transitions. [2024-10-31 22:04:05,846 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 149 transitions, 600 flow [2024-10-31 22:04:05,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:04:05,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-31 22:04:05,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 303 transitions. [2024-10-31 22:04:05,849 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7729591836734694 [2024-10-31 22:04:05,850 INFO L175 Difference]: Start difference. First operand has 90 places, 94 transitions, 232 flow. Second operand 4 states and 303 transitions. [2024-10-31 22:04:05,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 149 transitions, 600 flow [2024-10-31 22:04:05,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 149 transitions, 580 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-31 22:04:05,997 INFO L231 Difference]: Finished difference. Result has 92 places, 96 transitions, 258 flow [2024-10-31 22:04:05,997 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=258, PETRI_PLACES=92, PETRI_TRANSITIONS=96} [2024-10-31 22:04:05,998 INFO L277 CegarLoopForPetriNet]: 88 programPoint places, 4 predicate places. [2024-10-31 22:04:05,998 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 96 transitions, 258 flow [2024-10-31 22:04:05,999 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 52.75) internal successors, (211), 4 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:04:05,999 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:04:05,999 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:04:06,000 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-31 22:04:06,000 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-10-31 22:04:06,001 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:04:06,001 INFO L85 PathProgramCache]: Analyzing trace with hash 267444025, now seen corresponding path program 1 times [2024-10-31 22:04:06,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:04:06,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77627709] [2024-10-31 22:04:06,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:04:06,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:04:06,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:06,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:04:06,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:04:06,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77627709] [2024-10-31 22:04:06,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77627709] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:04:06,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:04:06,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:04:06,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346180959] [2024-10-31 22:04:06,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:04:06,084 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:04:06,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:04:06,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:04:06,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:04:06,123 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 98 [2024-10-31 22:04:06,124 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 96 transitions, 258 flow. Second operand has 4 states, 4 states have (on average 54.25) internal successors, (217), 4 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:04:06,124 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:04:06,125 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 98 [2024-10-31 22:04:06,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:04:07,896 INFO L124 PetriNetUnfolderBase]: 9856/18358 cut-off events. [2024-10-31 22:04:07,896 INFO L125 PetriNetUnfolderBase]: For 7482/8010 co-relation queries the response was YES. [2024-10-31 22:04:07,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37855 conditions, 18358 events. 9856/18358 cut-off events. For 7482/8010 co-relation queries the response was YES. Maximal size of possible extension queue 1117. Compared 170608 event pairs, 2826 based on Foata normal form. 542/16641 useless extension candidates. Maximal degree in co-relation 22936. Up to 7650 conditions per place. [2024-10-31 22:04:08,099 INFO L140 encePairwiseOnDemand]: 94/98 looper letters, 68 selfloop transitions, 4 changer transitions 0/122 dead transitions. [2024-10-31 22:04:08,099 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 122 transitions, 473 flow [2024-10-31 22:04:08,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:04:08,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-31 22:04:08,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 278 transitions. [2024-10-31 22:04:08,102 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7091836734693877 [2024-10-31 22:04:08,102 INFO L175 Difference]: Start difference. First operand has 92 places, 96 transitions, 258 flow. Second operand 4 states and 278 transitions. [2024-10-31 22:04:08,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 122 transitions, 473 flow [2024-10-31 22:04:08,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 122 transitions, 473 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-31 22:04:08,333 INFO L231 Difference]: Finished difference. Result has 94 places, 95 transitions, 262 flow [2024-10-31 22:04:08,334 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=262, PETRI_PLACES=94, PETRI_TRANSITIONS=95} [2024-10-31 22:04:08,335 INFO L277 CegarLoopForPetriNet]: 88 programPoint places, 6 predicate places. [2024-10-31 22:04:08,336 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 95 transitions, 262 flow [2024-10-31 22:04:08,337 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 54.25) internal successors, (217), 4 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:04:08,337 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:04:08,339 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:04:08,339 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-31 22:04:08,340 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-10-31 22:04:08,340 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:04:08,341 INFO L85 PathProgramCache]: Analyzing trace with hash -1884253256, now seen corresponding path program 1 times [2024-10-31 22:04:08,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:04:08,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185253471] [2024-10-31 22:04:08,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:04:08,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:04:08,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:08,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:04:08,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:04:08,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185253471] [2024-10-31 22:04:08,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185253471] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:04:08,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:04:08,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:04:08,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786506682] [2024-10-31 22:04:08,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:04:08,453 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:04:08,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:04:08,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:04:08,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:04:08,487 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 98 [2024-10-31 22:04:08,488 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 95 transitions, 262 flow. Second operand has 4 states, 4 states have (on average 55.5) internal successors, (222), 4 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:04:08,488 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:04:08,488 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 98 [2024-10-31 22:04:08,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:04:10,521 INFO L124 PetriNetUnfolderBase]: 9875/18608 cut-off events. [2024-10-31 22:04:10,521 INFO L125 PetriNetUnfolderBase]: For 8821/9099 co-relation queries the response was YES. [2024-10-31 22:04:10,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38917 conditions, 18608 events. 9875/18608 cut-off events. For 8821/9099 co-relation queries the response was YES. Maximal size of possible extension queue 1143. Compared 175301 event pairs, 2742 based on Foata normal form. 278/16630 useless extension candidates. Maximal degree in co-relation 23741. Up to 7590 conditions per place. [2024-10-31 22:04:10,672 INFO L140 encePairwiseOnDemand]: 94/98 looper letters, 66 selfloop transitions, 4 changer transitions 0/120 dead transitions. [2024-10-31 22:04:10,672 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 120 transitions, 479 flow [2024-10-31 22:04:10,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:04:10,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-31 22:04:10,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 281 transitions. [2024-10-31 22:04:10,674 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7168367346938775 [2024-10-31 22:04:10,674 INFO L175 Difference]: Start difference. First operand has 94 places, 95 transitions, 262 flow. Second operand 4 states and 281 transitions. [2024-10-31 22:04:10,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 120 transitions, 479 flow [2024-10-31 22:04:10,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 120 transitions, 465 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-31 22:04:10,970 INFO L231 Difference]: Finished difference. Result has 93 places, 94 transitions, 260 flow [2024-10-31 22:04:10,972 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=260, PETRI_PLACES=93, PETRI_TRANSITIONS=94} [2024-10-31 22:04:10,974 INFO L277 CegarLoopForPetriNet]: 88 programPoint places, 5 predicate places. [2024-10-31 22:04:10,975 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 94 transitions, 260 flow [2024-10-31 22:04:10,975 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 55.5) internal successors, (222), 4 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:04:10,975 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:04:10,976 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:04:10,976 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-31 22:04:10,977 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-10-31 22:04:10,977 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:04:10,977 INFO L85 PathProgramCache]: Analyzing trace with hash -299170103, now seen corresponding path program 1 times [2024-10-31 22:04:10,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:04:10,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814522798] [2024-10-31 22:04:10,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:04:10,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:04:10,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:11,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:04:11,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:04:11,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814522798] [2024-10-31 22:04:11,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814522798] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:04:11,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:04:11,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:04:11,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126317417] [2024-10-31 22:04:11,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:04:11,113 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:04:11,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:04:11,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:04:11,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:04:11,153 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 98 [2024-10-31 22:04:11,153 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 94 transitions, 260 flow. Second operand has 5 states, 5 states have (on average 53.4) internal successors, (267), 5 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:04:11,154 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:04:11,154 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 98 [2024-10-31 22:04:11,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:04:13,407 INFO L124 PetriNetUnfolderBase]: 13504/21736 cut-off events. [2024-10-31 22:04:13,408 INFO L125 PetriNetUnfolderBase]: For 9450/10175 co-relation queries the response was YES. [2024-10-31 22:04:13,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48199 conditions, 21736 events. 13504/21736 cut-off events. For 9450/10175 co-relation queries the response was YES. Maximal size of possible extension queue 1287. Compared 178892 event pairs, 2750 based on Foata normal form. 365/20178 useless extension candidates. Maximal degree in co-relation 28750. Up to 9338 conditions per place. [2024-10-31 22:04:13,561 INFO L140 encePairwiseOnDemand]: 92/98 looper letters, 95 selfloop transitions, 6 changer transitions 0/147 dead transitions. [2024-10-31 22:04:13,562 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 147 transitions, 622 flow [2024-10-31 22:04:13,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 22:04:13,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-31 22:04:13,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 355 transitions. [2024-10-31 22:04:13,564 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7244897959183674 [2024-10-31 22:04:13,564 INFO L175 Difference]: Start difference. First operand has 93 places, 94 transitions, 260 flow. Second operand 5 states and 355 transitions. [2024-10-31 22:04:13,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 147 transitions, 622 flow [2024-10-31 22:04:13,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 147 transitions, 602 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-31 22:04:13,708 INFO L231 Difference]: Finished difference. Result has 93 places, 93 transitions, 262 flow [2024-10-31 22:04:13,709 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=262, PETRI_PLACES=93, PETRI_TRANSITIONS=93} [2024-10-31 22:04:13,710 INFO L277 CegarLoopForPetriNet]: 88 programPoint places, 5 predicate places. [2024-10-31 22:04:13,712 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 93 transitions, 262 flow [2024-10-31 22:04:13,712 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 53.4) internal successors, (267), 5 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:04:13,712 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:04:13,712 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:04:13,713 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-31 22:04:13,713 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-10-31 22:04:13,713 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:04:13,713 INFO L85 PathProgramCache]: Analyzing trace with hash -299169078, now seen corresponding path program 1 times [2024-10-31 22:04:13,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:04:13,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690197141] [2024-10-31 22:04:13,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:04:13,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:04:13,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:13,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:04:13,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:04:13,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690197141] [2024-10-31 22:04:13,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690197141] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:04:13,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:04:13,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:04:13,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532787624] [2024-10-31 22:04:13,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:04:13,782 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:04:13,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:04:13,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:04:13,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:04:13,807 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 98 [2024-10-31 22:04:13,808 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 93 transitions, 262 flow. Second operand has 4 states, 4 states have (on average 52.5) internal successors, (210), 4 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:04:13,808 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:04:13,808 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 98 [2024-10-31 22:04:13,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:04:15,916 INFO L124 PetriNetUnfolderBase]: 10971/19600 cut-off events. [2024-10-31 22:04:15,916 INFO L125 PetriNetUnfolderBase]: For 10043/10625 co-relation queries the response was YES. [2024-10-31 22:04:15,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41971 conditions, 19600 events. 10971/19600 cut-off events. For 10043/10625 co-relation queries the response was YES. Maximal size of possible extension queue 1162. Compared 177042 event pairs, 5070 based on Foata normal form. 561/17937 useless extension candidates. Maximal degree in co-relation 25125. Up to 9302 conditions per place. [2024-10-31 22:04:16,017 INFO L140 encePairwiseOnDemand]: 93/98 looper letters, 97 selfloop transitions, 4 changer transitions 0/147 dead transitions. [2024-10-31 22:04:16,018 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 147 transitions, 610 flow [2024-10-31 22:04:16,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:04:16,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-31 22:04:16,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 300 transitions. [2024-10-31 22:04:16,020 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7653061224489796 [2024-10-31 22:04:16,020 INFO L175 Difference]: Start difference. First operand has 93 places, 93 transitions, 262 flow. Second operand 4 states and 300 transitions. [2024-10-31 22:04:16,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 147 transitions, 610 flow [2024-10-31 22:04:16,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 147 transitions, 598 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-31 22:04:16,117 INFO L231 Difference]: Finished difference. Result has 92 places, 92 transitions, 252 flow [2024-10-31 22:04:16,118 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=252, PETRI_PLACES=92, PETRI_TRANSITIONS=92} [2024-10-31 22:04:16,118 INFO L277 CegarLoopForPetriNet]: 88 programPoint places, 4 predicate places. [2024-10-31 22:04:16,118 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 92 transitions, 252 flow [2024-10-31 22:04:16,119 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 52.5) internal successors, (210), 4 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:04:16,119 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:04:16,119 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:04:16,119 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-31 22:04:16,119 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-10-31 22:04:16,120 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:04:16,120 INFO L85 PathProgramCache]: Analyzing trace with hash 1717660196, now seen corresponding path program 1 times [2024-10-31 22:04:16,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:04:16,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486235050] [2024-10-31 22:04:16,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:04:16,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:04:16,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:16,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:04:16,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:04:16,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486235050] [2024-10-31 22:04:16,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486235050] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:04:16,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:04:16,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:04:16,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271806906] [2024-10-31 22:04:16,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:04:16,213 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:04:16,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:04:16,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:04:16,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:04:16,251 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 98 [2024-10-31 22:04:16,252 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 92 transitions, 252 flow. Second operand has 4 states, 4 states have (on average 54.75) internal successors, (219), 4 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:04:16,252 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:04:16,252 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 98 [2024-10-31 22:04:16,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:04:17,919 INFO L124 PetriNetUnfolderBase]: 9894/18268 cut-off events. [2024-10-31 22:04:17,919 INFO L125 PetriNetUnfolderBase]: For 8863/9141 co-relation queries the response was YES. [2024-10-31 22:04:17,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38362 conditions, 18268 events. 9894/18268 cut-off events. For 8863/9141 co-relation queries the response was YES. Maximal size of possible extension queue 1113. Compared 168152 event pairs, 2742 based on Foata normal form. 552/16669 useless extension candidates. Maximal degree in co-relation 23634. Up to 7864 conditions per place. [2024-10-31 22:04:18,031 INFO L140 encePairwiseOnDemand]: 94/98 looper letters, 67 selfloop transitions, 4 changer transitions 0/117 dead transitions. [2024-10-31 22:04:18,032 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 117 transitions, 468 flow [2024-10-31 22:04:18,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:04:18,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-31 22:04:18,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 277 transitions. [2024-10-31 22:04:18,034 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7066326530612245 [2024-10-31 22:04:18,034 INFO L175 Difference]: Start difference. First operand has 92 places, 92 transitions, 252 flow. Second operand 4 states and 277 transitions. [2024-10-31 22:04:18,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 117 transitions, 468 flow [2024-10-31 22:04:18,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 117 transitions, 457 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-31 22:04:18,145 INFO L231 Difference]: Finished difference. Result has 92 places, 91 transitions, 250 flow [2024-10-31 22:04:18,145 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=250, PETRI_PLACES=92, PETRI_TRANSITIONS=91} [2024-10-31 22:04:18,146 INFO L277 CegarLoopForPetriNet]: 88 programPoint places, 4 predicate places. [2024-10-31 22:04:18,146 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 91 transitions, 250 flow [2024-10-31 22:04:18,147 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 54.75) internal successors, (219), 4 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:04:18,147 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:04:18,147 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:04:18,148 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-31 22:04:18,148 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-10-31 22:04:18,148 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:04:18,148 INFO L85 PathProgramCache]: Analyzing trace with hash -1182408726, now seen corresponding path program 1 times [2024-10-31 22:04:18,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:04:18,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005343081] [2024-10-31 22:04:18,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:04:18,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:04:18,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:18,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:04:18,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:04:18,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005343081] [2024-10-31 22:04:18,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005343081] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:04:18,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:04:18,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:04:18,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129279118] [2024-10-31 22:04:18,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:04:18,255 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:04:18,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:04:18,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:04:18,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:04:18,286 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 98 [2024-10-31 22:04:18,286 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 91 transitions, 250 flow. Second operand has 4 states, 4 states have (on average 53.25) internal successors, (213), 4 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:04:18,287 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:04:18,287 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 98 [2024-10-31 22:04:18,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:04:20,743 INFO L124 PetriNetUnfolderBase]: 15804/26988 cut-off events. [2024-10-31 22:04:20,743 INFO L125 PetriNetUnfolderBase]: For 14945/15787 co-relation queries the response was YES. [2024-10-31 22:04:20,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57392 conditions, 26988 events. 15804/26988 cut-off events. For 14945/15787 co-relation queries the response was YES. Maximal size of possible extension queue 1497. Compared 243981 event pairs, 6214 based on Foata normal form. 1444/24795 useless extension candidates. Maximal degree in co-relation 35440. Up to 11473 conditions per place. [2024-10-31 22:04:20,895 INFO L140 encePairwiseOnDemand]: 90/98 looper letters, 101 selfloop transitions, 5 changer transitions 0/148 dead transitions. [2024-10-31 22:04:20,896 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 148 transitions, 664 flow [2024-10-31 22:04:20,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:04:20,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-31 22:04:20,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 301 transitions. [2024-10-31 22:04:20,902 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7678571428571429 [2024-10-31 22:04:20,902 INFO L175 Difference]: Start difference. First operand has 92 places, 91 transitions, 250 flow. Second operand 4 states and 301 transitions. [2024-10-31 22:04:20,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 148 transitions, 664 flow [2024-10-31 22:04:20,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 148 transitions, 644 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-31 22:04:20,985 INFO L231 Difference]: Finished difference. Result has 94 places, 93 transitions, 276 flow [2024-10-31 22:04:20,985 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=276, PETRI_PLACES=94, PETRI_TRANSITIONS=93} [2024-10-31 22:04:20,986 INFO L277 CegarLoopForPetriNet]: 88 programPoint places, 6 predicate places. [2024-10-31 22:04:20,986 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 93 transitions, 276 flow [2024-10-31 22:04:20,987 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.25) internal successors, (213), 4 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:04:20,987 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:04:20,987 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:04:20,987 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-31 22:04:20,987 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-10-31 22:04:20,988 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:04:20,988 INFO L85 PathProgramCache]: Analyzing trace with hash -684337860, now seen corresponding path program 1 times [2024-10-31 22:04:20,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:04:20,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338051915] [2024-10-31 22:04:20,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:04:20,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:04:21,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:04:21,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:04:21,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:04:21,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338051915] [2024-10-31 22:04:21,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338051915] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:04:21,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:04:21,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 22:04:21,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130275496] [2024-10-31 22:04:21,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:04:21,100 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:04:21,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:04:21,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:04:21,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:04:21,171 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 98 [2024-10-31 22:04:21,171 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 93 transitions, 276 flow. Second operand has 6 states, 6 states have (on average 50.166666666666664) internal successors, (301), 6 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:04:21,172 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:04:21,172 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 98 [2024-10-31 22:04:21,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand