./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread-ext/11_fmaxsymopt-pthread.i --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_3b71f615-f177-4f01-a2e0-1b4180d3d642/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b71f615-f177-4f01-a2e0-1b4180d3d642/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b71f615-f177-4f01-a2e0-1b4180d3d642/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b71f615-f177-4f01-a2e0-1b4180d3d642/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-ext/11_fmaxsymopt-pthread.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b71f615-f177-4f01-a2e0-1b4180d3d642/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b71f615-f177-4f01-a2e0-1b4180d3d642/bin/uautomizer-verify-VRDe98Ueme --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 52bbaf4aea0b4aa619bc81dd1f1ee11014fb948f7d29769666561e1faf399ae7 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 11:53:48,873 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 11:53:48,991 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b71f615-f177-4f01-a2e0-1b4180d3d642/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-26 11:53:48,995 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 11:53:48,996 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 11:53:49,047 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 11:53:49,050 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 11:53:49,050 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 11:53:49,052 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 11:53:49,057 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 11:53:49,057 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 11:53:49,057 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 11:53:49,058 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 11:53:49,060 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 11:53:49,060 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 11:53:49,061 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 11:53:49,061 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 11:53:49,062 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 11:53:49,062 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 11:53:49,063 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 11:53:49,063 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 11:53:49,064 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 11:53:49,064 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 11:53:49,064 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 11:53:49,065 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-26 11:53:49,065 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 11:53:49,066 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 11:53:49,066 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 11:53:49,066 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 11:53:49,067 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 11:53:49,069 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 11:53:49,069 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 11:53:49,069 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 11:53:49,069 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:53:49,070 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 11:53:49,070 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 11:53:49,070 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 11:53:49,070 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 11:53:49,071 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 11:53:49,071 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 11:53:49,072 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 11:53:49,072 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 11:53:49,072 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 11:53:49,073 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 11:53:49,073 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_3b71f615-f177-4f01-a2e0-1b4180d3d642/bin/uautomizer-verify-VRDe98Ueme/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b71f615-f177-4f01-a2e0-1b4180d3d642/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 52bbaf4aea0b4aa619bc81dd1f1ee11014fb948f7d29769666561e1faf399ae7 [2023-11-26 11:53:49,367 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 11:53:49,411 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 11:53:49,413 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 11:53:49,415 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 11:53:49,415 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 11:53:49,417 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b71f615-f177-4f01-a2e0-1b4180d3d642/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/pthread-ext/11_fmaxsymopt-pthread.i [2023-11-26 11:53:52,614 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 11:53:53,001 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 11:53:53,001 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b71f615-f177-4f01-a2e0-1b4180d3d642/sv-benchmarks/c/pthread-ext/11_fmaxsymopt-pthread.i [2023-11-26 11:53:53,023 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b71f615-f177-4f01-a2e0-1b4180d3d642/bin/uautomizer-verify-VRDe98Ueme/data/7fc46b3ac/c7cbb08e894347fba166ce8440319f4e/FLAG1fd9e757f [2023-11-26 11:53:53,043 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b71f615-f177-4f01-a2e0-1b4180d3d642/bin/uautomizer-verify-VRDe98Ueme/data/7fc46b3ac/c7cbb08e894347fba166ce8440319f4e [2023-11-26 11:53:53,049 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 11:53:53,052 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 11:53:53,057 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 11:53:53,058 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 11:53:53,063 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 11:53:53,064 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:53:53" (1/1) ... [2023-11-26 11:53:53,065 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7077f87d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:53:53, skipping insertion in model container [2023-11-26 11:53:53,066 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:53:53" (1/1) ... [2023-11-26 11:53:53,130 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 11:53:53,550 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:53:53,569 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 11:53:53,642 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:53:53,697 INFO L206 MainTranslator]: Completed translation [2023-11-26 11:53:53,698 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:53:53 WrapperNode [2023-11-26 11:53:53,698 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 11:53:53,699 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 11:53:53,699 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 11:53:53,700 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 11:53:53,708 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:53:53" (1/1) ... [2023-11-26 11:53:53,735 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:53:53" (1/1) ... [2023-11-26 11:53:53,765 INFO L138 Inliner]: procedures = 165, calls = 31, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 93 [2023-11-26 11:53:53,765 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 11:53:53,766 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 11:53:53,767 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 11:53:53,767 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 11:53:53,779 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:53:53" (1/1) ... [2023-11-26 11:53:53,780 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:53:53" (1/1) ... [2023-11-26 11:53:53,783 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:53:53" (1/1) ... [2023-11-26 11:53:53,809 INFO L175 MemorySlicer]: Split 15 memory accesses to 4 slices as follows [2, 5, 7, 1]. 47 percent of accesses are in the largest equivalence class. The 13 initializations are split as follows [2, 5, 6, 0]. The 1 writes are split as follows [0, 0, 0, 1]. [2023-11-26 11:53:53,814 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:53:53" (1/1) ... [2023-11-26 11:53:53,815 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:53:53" (1/1) ... [2023-11-26 11:53:53,826 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:53:53" (1/1) ... [2023-11-26 11:53:53,835 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:53:53" (1/1) ... [2023-11-26 11:53:53,838 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:53:53" (1/1) ... [2023-11-26 11:53:53,840 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:53:53" (1/1) ... [2023-11-26 11:53:53,844 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 11:53:53,845 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 11:53:53,845 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 11:53:53,845 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 11:53:53,861 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:53:53" (1/1) ... [2023-11-26 11:53:53,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:53:53,881 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b71f615-f177-4f01-a2e0-1b4180d3d642/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:53:53,898 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b71f615-f177-4f01-a2e0-1b4180d3d642/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 11:53:53,929 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b71f615-f177-4f01-a2e0-1b4180d3d642/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 11:53:53,943 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-26 11:53:53,947 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-26 11:53:53,947 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-26 11:53:53,947 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-26 11:53:53,948 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-11-26 11:53:53,948 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-11-26 11:53:53,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-26 11:53:53,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-26 11:53:53,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-26 11:53:53,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-26 11:53:53,951 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-26 11:53:53,952 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 11:53:53,952 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 11:53:53,952 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 11:53:53,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 11:53:53,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-26 11:53:53,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-26 11:53:53,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-26 11:53:53,971 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-26 11:53:53,971 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 11:53:53,972 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 11:53:53,976 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-26 11:53:54,164 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 11:53:54,166 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 11:53:54,433 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 11:53:54,608 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 11:53:54,608 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-26 11:53:54,609 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:53:54 BoogieIcfgContainer [2023-11-26 11:53:54,609 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 11:53:54,612 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 11:53:54,612 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 11:53:54,615 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 11:53:54,616 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 11:53:53" (1/3) ... [2023-11-26 11:53:54,616 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f3e025f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:53:54, skipping insertion in model container [2023-11-26 11:53:54,617 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:53:53" (2/3) ... [2023-11-26 11:53:54,617 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f3e025f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:53:54, skipping insertion in model container [2023-11-26 11:53:54,617 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:53:54" (3/3) ... [2023-11-26 11:53:54,619 INFO L112 eAbstractionObserver]: Analyzing ICFG 11_fmaxsymopt-pthread.i [2023-11-26 11:53:54,628 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-26 11:53:54,639 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 11:53:54,640 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-11-26 11:53:54,640 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-26 11:53:54,708 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-26 11:53:54,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 30 places, 31 transitions, 66 flow [2023-11-26 11:53:54,773 INFO L124 PetriNetUnfolderBase]: 4/33 cut-off events. [2023-11-26 11:53:54,773 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 11:53:54,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37 conditions, 33 events. 4/33 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 62 event pairs, 0 based on Foata normal form. 0/23 useless extension candidates. Maximal degree in co-relation 28. Up to 2 conditions per place. [2023-11-26 11:53:54,777 INFO L82 GeneralOperation]: Start removeDead. Operand has 30 places, 31 transitions, 66 flow [2023-11-26 11:53:54,780 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 30 places, 31 transitions, 66 flow [2023-11-26 11:53:54,792 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:53:54,799 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;@3dc42565, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:53:54,799 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2023-11-26 11:53:54,805 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 11:53:54,805 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2023-11-26 11:53:54,806 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 11:53:54,806 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:53:54,806 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-26 11:53:54,807 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-11-26 11:53:54,812 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:53:54,813 INFO L85 PathProgramCache]: Analyzing trace with hash 277409973, now seen corresponding path program 1 times [2023-11-26 11:53:54,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:53:54,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576524656] [2023-11-26 11:53:54,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:53:54,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:53:55,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:53:55,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:53:55,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:53:55,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576524656] [2023-11-26 11:53:55,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576524656] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:53:55,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:53:55,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:53:55,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981201051] [2023-11-26 11:53:55,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:53:55,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:53:55,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:53:55,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:53:55,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:53:55,366 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 31 [2023-11-26 11:53:55,370 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 31 transitions, 66 flow. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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) [2023-11-26 11:53:55,371 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:53:55,371 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 31 [2023-11-26 11:53:55,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:53:55,498 INFO L124 PetriNetUnfolderBase]: 26/92 cut-off events. [2023-11-26 11:53:55,498 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 11:53:55,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155 conditions, 92 events. 26/92 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 249 event pairs, 2 based on Foata normal form. 6/92 useless extension candidates. Maximal degree in co-relation 143. Up to 48 conditions per place. [2023-11-26 11:53:55,501 INFO L140 encePairwiseOnDemand]: 25/31 looper letters, 15 selfloop transitions, 2 changer transitions 0/29 dead transitions. [2023-11-26 11:53:55,501 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 29 transitions, 96 flow [2023-11-26 11:53:55,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:53:55,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:53:55,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 58 transitions. [2023-11-26 11:53:55,516 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6236559139784946 [2023-11-26 11:53:55,517 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 58 transitions. [2023-11-26 11:53:55,535 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 58 transitions. [2023-11-26 11:53:55,536 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:53:55,538 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 58 transitions. [2023-11-26 11:53:55,540 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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) [2023-11-26 11:53:55,544 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 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) [2023-11-26 11:53:55,544 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 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) [2023-11-26 11:53:55,546 INFO L175 Difference]: Start difference. First operand has 30 places, 31 transitions, 66 flow. Second operand 3 states and 58 transitions. [2023-11-26 11:53:55,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 29 transitions, 96 flow [2023-11-26 11:53:55,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 29 transitions, 96 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-26 11:53:55,553 INFO L231 Difference]: Finished difference. Result has 30 places, 27 transitions, 62 flow [2023-11-26 11:53:55,555 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=62, PETRI_PLACES=30, PETRI_TRANSITIONS=27} [2023-11-26 11:53:55,559 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 0 predicate places. [2023-11-26 11:53:55,559 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 27 transitions, 62 flow [2023-11-26 11:53:55,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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) [2023-11-26 11:53:55,560 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:53:55,560 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-26 11:53:55,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 11:53:55,561 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-11-26 11:53:55,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:53:55,561 INFO L85 PathProgramCache]: Analyzing trace with hash 9759739, now seen corresponding path program 1 times [2023-11-26 11:53:55,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:53:55,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023536557] [2023-11-26 11:53:55,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:53:55,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:53:55,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:53:55,588 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 11:53:55,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:53:55,623 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 11:53:55,624 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-26 11:53:55,626 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 9 remaining) [2023-11-26 11:53:55,628 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 9 remaining) [2023-11-26 11:53:55,629 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 9 remaining) [2023-11-26 11:53:55,629 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 9 remaining) [2023-11-26 11:53:55,629 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 9 remaining) [2023-11-26 11:53:55,630 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 9 remaining) [2023-11-26 11:53:55,630 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 9 remaining) [2023-11-26 11:53:55,630 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 9 remaining) [2023-11-26 11:53:55,630 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 9 remaining) [2023-11-26 11:53:55,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-26 11:53:55,631 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-26 11:53:55,634 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-26 11:53:55,635 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-26 11:53:55,671 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-26 11:53:55,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 54 places, 57 transitions, 124 flow [2023-11-26 11:53:55,689 INFO L124 PetriNetUnfolderBase]: 8/62 cut-off events. [2023-11-26 11:53:55,690 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-26 11:53:55,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70 conditions, 62 events. 8/62 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 188 event pairs, 0 based on Foata normal form. 0/43 useless extension candidates. Maximal degree in co-relation 53. Up to 3 conditions per place. [2023-11-26 11:53:55,691 INFO L82 GeneralOperation]: Start removeDead. Operand has 54 places, 57 transitions, 124 flow [2023-11-26 11:53:55,693 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 54 places, 57 transitions, 124 flow [2023-11-26 11:53:55,695 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:53:55,696 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;@3dc42565, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:53:55,697 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2023-11-26 11:53:55,701 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 11:53:55,701 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2023-11-26 11:53:55,701 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-26 11:53:55,701 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:53:55,702 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-26 11:53:55,702 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-26 11:53:55,703 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:53:55,703 INFO L85 PathProgramCache]: Analyzing trace with hash 331830183, now seen corresponding path program 1 times [2023-11-26 11:53:55,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:53:55,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132571994] [2023-11-26 11:53:55,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:53:55,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:53:55,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:53:55,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:53:55,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:53:55,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132571994] [2023-11-26 11:53:55,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132571994] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:53:55,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:53:55,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:53:55,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824297978] [2023-11-26 11:53:55,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:53:55,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:53:55,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:53:55,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:53:55,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:53:55,834 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 57 [2023-11-26 11:53:55,835 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 57 transitions, 124 flow. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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) [2023-11-26 11:53:55,835 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:53:55,835 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 57 [2023-11-26 11:53:55,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:53:56,163 INFO L124 PetriNetUnfolderBase]: 623/1392 cut-off events. [2023-11-26 11:53:56,163 INFO L125 PetriNetUnfolderBase]: For 33/33 co-relation queries the response was YES. [2023-11-26 11:53:56,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2380 conditions, 1392 events. 623/1392 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 8626 event pairs, 68 based on Foata normal form. 132/1431 useless extension candidates. Maximal degree in co-relation 2029. Up to 807 conditions per place. [2023-11-26 11:53:56,181 INFO L140 encePairwiseOnDemand]: 49/57 looper letters, 37 selfloop transitions, 2 changer transitions 0/64 dead transitions. [2023-11-26 11:53:56,181 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 64 transitions, 221 flow [2023-11-26 11:53:56,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:53:56,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:53:56,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 123 transitions. [2023-11-26 11:53:56,183 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7192982456140351 [2023-11-26 11:53:56,184 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 123 transitions. [2023-11-26 11:53:56,184 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 123 transitions. [2023-11-26 11:53:56,184 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:53:56,185 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 123 transitions. [2023-11-26 11:53:56,186 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 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) [2023-11-26 11:53:56,187 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:53:56,188 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:53:56,188 INFO L175 Difference]: Start difference. First operand has 54 places, 57 transitions, 124 flow. Second operand 3 states and 123 transitions. [2023-11-26 11:53:56,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 64 transitions, 221 flow [2023-11-26 11:53:56,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 64 transitions, 221 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-26 11:53:56,192 INFO L231 Difference]: Finished difference. Result has 54 places, 51 transitions, 116 flow [2023-11-26 11:53:56,192 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=116, PETRI_PLACES=54, PETRI_TRANSITIONS=51} [2023-11-26 11:53:56,193 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 0 predicate places. [2023-11-26 11:53:56,194 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 51 transitions, 116 flow [2023-11-26 11:53:56,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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) [2023-11-26 11:53:56,194 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:53:56,194 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-26 11:53:56,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-26 11:53:56,195 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-26 11:53:56,195 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:53:56,196 INFO L85 PathProgramCache]: Analyzing trace with hash 1696801470, now seen corresponding path program 1 times [2023-11-26 11:53:56,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:53:56,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526660235] [2023-11-26 11:53:56,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:53:56,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:53:56,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:53:56,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:53:56,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:53:56,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526660235] [2023-11-26 11:53:56,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526660235] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:53:56,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:53:56,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:53:56,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940170823] [2023-11-26 11:53:56,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:53:56,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:53:56,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:53:56,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:53:56,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:53:56,296 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 57 [2023-11-26 11:53:56,296 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 51 transitions, 116 flow. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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) [2023-11-26 11:53:56,296 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:53:56,296 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 57 [2023-11-26 11:53:56,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:53:56,549 INFO L124 PetriNetUnfolderBase]: 570/1306 cut-off events. [2023-11-26 11:53:56,549 INFO L125 PetriNetUnfolderBase]: For 62/62 co-relation queries the response was YES. [2023-11-26 11:53:56,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2272 conditions, 1306 events. 570/1306 cut-off events. For 62/62 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 8029 event pairs, 68 based on Foata normal form. 33/1249 useless extension candidates. Maximal degree in co-relation 1929. Up to 721 conditions per place. [2023-11-26 11:53:56,561 INFO L140 encePairwiseOnDemand]: 54/57 looper letters, 36 selfloop transitions, 2 changer transitions 0/63 dead transitions. [2023-11-26 11:53:56,562 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 63 transitions, 221 flow [2023-11-26 11:53:56,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:53:56,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:53:56,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 114 transitions. [2023-11-26 11:53:56,568 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2023-11-26 11:53:56,568 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 114 transitions. [2023-11-26 11:53:56,568 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 114 transitions. [2023-11-26 11:53:56,570 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:53:56,570 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 114 transitions. [2023-11-26 11:53:56,573 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 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) [2023-11-26 11:53:56,574 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:53:56,575 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:53:56,575 INFO L175 Difference]: Start difference. First operand has 54 places, 51 transitions, 116 flow. Second operand 3 states and 114 transitions. [2023-11-26 11:53:56,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 63 transitions, 221 flow [2023-11-26 11:53:56,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 63 transitions, 217 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 11:53:56,580 INFO L231 Difference]: Finished difference. Result has 53 places, 50 transitions, 114 flow [2023-11-26 11:53:56,580 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=114, PETRI_PLACES=53, PETRI_TRANSITIONS=50} [2023-11-26 11:53:56,583 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -1 predicate places. [2023-11-26 11:53:56,583 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 50 transitions, 114 flow [2023-11-26 11:53:56,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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) [2023-11-26 11:53:56,584 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:53:56,584 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-11-26 11:53:56,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-26 11:53:56,584 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-26 11:53:56,585 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:53:56,585 INFO L85 PathProgramCache]: Analyzing trace with hash -1499728769, now seen corresponding path program 1 times [2023-11-26 11:53:56,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:53:56,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832719265] [2023-11-26 11:53:56,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:53:56,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:53:56,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:53:56,701 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 11:53:56,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:53:56,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832719265] [2023-11-26 11:53:56,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832719265] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:53:56,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:53:56,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:53:56,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697336190] [2023-11-26 11:53:56,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:53:56,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:53:56,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:53:56,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:53:56,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:53:56,722 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 57 [2023-11-26 11:53:56,722 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 50 transitions, 114 flow. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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) [2023-11-26 11:53:56,722 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:53:56,723 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 57 [2023-11-26 11:53:56,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:53:56,964 INFO L124 PetriNetUnfolderBase]: 614/1352 cut-off events. [2023-11-26 11:53:56,965 INFO L125 PetriNetUnfolderBase]: For 94/94 co-relation queries the response was YES. [2023-11-26 11:53:56,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2404 conditions, 1352 events. 614/1352 cut-off events. For 94/94 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 8241 event pairs, 92 based on Foata normal form. 30/1298 useless extension candidates. Maximal degree in co-relation 1784. Up to 750 conditions per place. [2023-11-26 11:53:56,979 INFO L140 encePairwiseOnDemand]: 54/57 looper letters, 36 selfloop transitions, 2 changer transitions 0/61 dead transitions. [2023-11-26 11:53:56,980 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 61 transitions, 216 flow [2023-11-26 11:53:56,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:53:56,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:53:56,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 114 transitions. [2023-11-26 11:53:56,988 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2023-11-26 11:53:56,988 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 114 transitions. [2023-11-26 11:53:56,988 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 114 transitions. [2023-11-26 11:53:56,988 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:53:56,988 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 114 transitions. [2023-11-26 11:53:56,989 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 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) [2023-11-26 11:53:56,991 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:53:56,992 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:53:56,992 INFO L175 Difference]: Start difference. First operand has 53 places, 50 transitions, 114 flow. Second operand 3 states and 114 transitions. [2023-11-26 11:53:56,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 61 transitions, 216 flow [2023-11-26 11:53:56,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 61 transitions, 208 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 11:53:56,996 INFO L231 Difference]: Finished difference. Result has 52 places, 49 transitions, 112 flow [2023-11-26 11:53:56,996 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=112, PETRI_PLACES=52, PETRI_TRANSITIONS=49} [2023-11-26 11:53:56,998 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -2 predicate places. [2023-11-26 11:53:56,998 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 49 transitions, 112 flow [2023-11-26 11:53:56,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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) [2023-11-26 11:53:56,999 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:53:56,999 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1] [2023-11-26 11:53:56,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-26 11:53:56,999 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-26 11:53:57,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:53:57,000 INFO L85 PathProgramCache]: Analyzing trace with hash 753033667, now seen corresponding path program 1 times [2023-11-26 11:53:57,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:53:57,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307375540] [2023-11-26 11:53:57,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:53:57,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:53:57,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:53:57,026 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 11:53:57,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:53:57,054 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 11:53:57,054 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-26 11:53:57,055 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2023-11-26 11:53:57,055 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2023-11-26 11:53:57,055 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2023-11-26 11:53:57,056 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2023-11-26 11:53:57,056 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2023-11-26 11:53:57,057 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2023-11-26 11:53:57,057 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 13 remaining) [2023-11-26 11:53:57,057 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2023-11-26 11:53:57,057 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2023-11-26 11:53:57,057 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2023-11-26 11:53:57,058 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2023-11-26 11:53:57,058 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2023-11-26 11:53:57,058 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2023-11-26 11:53:57,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-26 11:53:57,058 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-11-26 11:53:57,059 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-26 11:53:57,059 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-26 11:53:57,126 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-26 11:53:57,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 78 places, 83 transitions, 184 flow [2023-11-26 11:53:57,145 INFO L124 PetriNetUnfolderBase]: 12/91 cut-off events. [2023-11-26 11:53:57,145 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-26 11:53:57,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104 conditions, 91 events. 12/91 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 320 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 78. Up to 4 conditions per place. [2023-11-26 11:53:57,147 INFO L82 GeneralOperation]: Start removeDead. Operand has 78 places, 83 transitions, 184 flow [2023-11-26 11:53:57,148 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 78 places, 83 transitions, 184 flow [2023-11-26 11:53:57,151 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:53:57,156 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;@3dc42565, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:53:57,157 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2023-11-26 11:53:57,160 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 11:53:57,160 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2023-11-26 11:53:57,161 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-26 11:53:57,161 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:53:57,161 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-26 11:53:57,161 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-26 11:53:57,161 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:53:57,162 INFO L85 PathProgramCache]: Analyzing trace with hash 411061523, now seen corresponding path program 1 times [2023-11-26 11:53:57,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:53:57,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855937620] [2023-11-26 11:53:57,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:53:57,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:53:57,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:53:57,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:53:57,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:53:57,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855937620] [2023-11-26 11:53:57,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855937620] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:53:57,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:53:57,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:53:57,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75347668] [2023-11-26 11:53:57,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:53:57,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:53:57,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:53:57,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:53:57,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:53:57,259 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 83 [2023-11-26 11:53:57,259 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 83 transitions, 184 flow. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 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) [2023-11-26 11:53:57,259 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:53:57,260 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 83 [2023-11-26 11:53:57,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:53:59,766 INFO L124 PetriNetUnfolderBase]: 9719/16887 cut-off events. [2023-11-26 11:53:59,767 INFO L125 PetriNetUnfolderBase]: For 707/707 co-relation queries the response was YES. [2023-11-26 11:53:59,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30526 conditions, 16887 events. 9719/16887 cut-off events. For 707/707 co-relation queries the response was YES. Maximal size of possible extension queue 719. Compared 134260 event pairs, 5096 based on Foata normal form. 2408/18101 useless extension candidates. Maximal degree in co-relation 22359. Up to 11097 conditions per place. [2023-11-26 11:53:59,998 INFO L140 encePairwiseOnDemand]: 73/83 looper letters, 59 selfloop transitions, 2 changer transitions 0/99 dead transitions. [2023-11-26 11:53:59,999 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 99 transitions, 350 flow [2023-11-26 11:53:59,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:53:59,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:54:00,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 188 transitions. [2023-11-26 11:54:00,001 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7550200803212851 [2023-11-26 11:54:00,001 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 188 transitions. [2023-11-26 11:54:00,001 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 188 transitions. [2023-11-26 11:54:00,001 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:54:00,002 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 188 transitions. [2023-11-26 11:54:00,003 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 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) [2023-11-26 11:54:00,004 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 83.0) internal successors, (332), 4 states have internal predecessors, (332), 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) [2023-11-26 11:54:00,004 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 83.0) internal successors, (332), 4 states have internal predecessors, (332), 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) [2023-11-26 11:54:00,004 INFO L175 Difference]: Start difference. First operand has 78 places, 83 transitions, 184 flow. Second operand 3 states and 188 transitions. [2023-11-26 11:54:00,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 99 transitions, 350 flow [2023-11-26 11:54:00,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 99 transitions, 346 flow, removed 2 selfloop flow, removed 0 redundant places. [2023-11-26 11:54:00,009 INFO L231 Difference]: Finished difference. Result has 78 places, 75 transitions, 170 flow [2023-11-26 11:54:00,010 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=170, PETRI_PLACES=78, PETRI_TRANSITIONS=75} [2023-11-26 11:54:00,011 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 0 predicate places. [2023-11-26 11:54:00,011 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 75 transitions, 170 flow [2023-11-26 11:54:00,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 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) [2023-11-26 11:54:00,011 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:54:00,012 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-26 11:54:00,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-26 11:54:00,012 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-26 11:54:00,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:54:00,013 INFO L85 PathProgramCache]: Analyzing trace with hash -141994203, now seen corresponding path program 1 times [2023-11-26 11:54:00,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:54:00,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478209179] [2023-11-26 11:54:00,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:54:00,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:54:00,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:54:00,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:54:00,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:54:00,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478209179] [2023-11-26 11:54:00,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478209179] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:54:00,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:54:00,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:54:00,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58155432] [2023-11-26 11:54:00,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:54:00,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:54:00,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:54:00,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:54:00,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:54:00,130 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 83 [2023-11-26 11:54:00,130 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 75 transitions, 170 flow. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 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) [2023-11-26 11:54:00,131 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:54:00,131 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 83 [2023-11-26 11:54:00,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:54:02,553 INFO L124 PetriNetUnfolderBase]: 8994/16402 cut-off events. [2023-11-26 11:54:02,553 INFO L125 PetriNetUnfolderBase]: For 680/680 co-relation queries the response was YES. [2023-11-26 11:54:02,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29369 conditions, 16402 events. 8994/16402 cut-off events. For 680/680 co-relation queries the response was YES. Maximal size of possible extension queue 640. Compared 137279 event pairs, 1268 based on Foata normal form. 333/15739 useless extension candidates. Maximal degree in co-relation 27024. Up to 9901 conditions per place. [2023-11-26 11:54:02,716 INFO L140 encePairwiseOnDemand]: 80/83 looper letters, 58 selfloop transitions, 2 changer transitions 0/98 dead transitions. [2023-11-26 11:54:02,717 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 98 transitions, 346 flow [2023-11-26 11:54:02,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:54:02,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:54:02,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 175 transitions. [2023-11-26 11:54:02,719 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7028112449799196 [2023-11-26 11:54:02,719 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 175 transitions. [2023-11-26 11:54:02,720 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 175 transitions. [2023-11-26 11:54:02,720 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:54:02,720 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 175 transitions. [2023-11-26 11:54:02,721 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:54:02,722 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 83.0) internal successors, (332), 4 states have internal predecessors, (332), 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) [2023-11-26 11:54:02,723 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 83.0) internal successors, (332), 4 states have internal predecessors, (332), 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) [2023-11-26 11:54:02,723 INFO L175 Difference]: Start difference. First operand has 78 places, 75 transitions, 170 flow. Second operand 3 states and 175 transitions. [2023-11-26 11:54:02,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 98 transitions, 346 flow [2023-11-26 11:54:02,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 98 transitions, 342 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 11:54:02,733 INFO L231 Difference]: Finished difference. Result has 77 places, 74 transitions, 168 flow [2023-11-26 11:54:02,733 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=168, PETRI_PLACES=77, PETRI_TRANSITIONS=74} [2023-11-26 11:54:02,736 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, -1 predicate places. [2023-11-26 11:54:02,736 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 74 transitions, 168 flow [2023-11-26 11:54:02,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 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) [2023-11-26 11:54:02,737 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:54:02,737 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-11-26 11:54:02,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-26 11:54:02,738 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-26 11:54:02,738 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:54:02,738 INFO L85 PathProgramCache]: Analyzing trace with hash 944183711, now seen corresponding path program 1 times [2023-11-26 11:54:02,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:54:02,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91980927] [2023-11-26 11:54:02,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:54:02,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:54:02,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:54:02,818 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 11:54:02,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:54:02,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91980927] [2023-11-26 11:54:02,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91980927] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:54:02,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:54:02,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:54:02,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699492396] [2023-11-26 11:54:02,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:54:02,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:54:02,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:54:02,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:54:02,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:54:02,832 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 83 [2023-11-26 11:54:02,833 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 74 transitions, 168 flow. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:54:02,833 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:54:02,833 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 83 [2023-11-26 11:54:02,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:54:05,249 INFO L124 PetriNetUnfolderBase]: 9782/17090 cut-off events. [2023-11-26 11:54:05,249 INFO L125 PetriNetUnfolderBase]: For 1078/1078 co-relation queries the response was YES. [2023-11-26 11:54:05,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31343 conditions, 17090 events. 9782/17090 cut-off events. For 1078/1078 co-relation queries the response was YES. Maximal size of possible extension queue 718. Compared 136186 event pairs, 2972 based on Foata normal form. 330/16344 useless extension candidates. Maximal degree in co-relation 24466. Up to 11040 conditions per place. [2023-11-26 11:54:05,429 INFO L140 encePairwiseOnDemand]: 80/83 looper letters, 58 selfloop transitions, 2 changer transitions 0/96 dead transitions. [2023-11-26 11:54:05,429 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 96 transitions, 341 flow [2023-11-26 11:54:05,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:54:05,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:54:05,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 175 transitions. [2023-11-26 11:54:05,433 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7028112449799196 [2023-11-26 11:54:05,433 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 175 transitions. [2023-11-26 11:54:05,433 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 175 transitions. [2023-11-26 11:54:05,433 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:54:05,434 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 175 transitions. [2023-11-26 11:54:05,435 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:54:05,437 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 83.0) internal successors, (332), 4 states have internal predecessors, (332), 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) [2023-11-26 11:54:05,437 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 83.0) internal successors, (332), 4 states have internal predecessors, (332), 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) [2023-11-26 11:54:05,438 INFO L175 Difference]: Start difference. First operand has 77 places, 74 transitions, 168 flow. Second operand 3 states and 175 transitions. [2023-11-26 11:54:05,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 96 transitions, 341 flow [2023-11-26 11:54:05,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 96 transitions, 333 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 11:54:05,455 INFO L231 Difference]: Finished difference. Result has 76 places, 73 transitions, 166 flow [2023-11-26 11:54:05,456 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=166, PETRI_PLACES=76, PETRI_TRANSITIONS=73} [2023-11-26 11:54:05,458 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, -2 predicate places. [2023-11-26 11:54:05,458 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 73 transitions, 166 flow [2023-11-26 11:54:05,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:54:05,458 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:54:05,459 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:54:05,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-26 11:54:05,459 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-26 11:54:05,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:54:05,460 INFO L85 PathProgramCache]: Analyzing trace with hash -795075534, now seen corresponding path program 1 times [2023-11-26 11:54:05,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:54:05,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601952641] [2023-11-26 11:54:05,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:54:05,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:54:05,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:54:05,551 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 11:54:05,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:54:05,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601952641] [2023-11-26 11:54:05,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601952641] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:54:05,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:54:05,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:54:05,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088881488] [2023-11-26 11:54:05,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:54:05,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:54:05,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:54:05,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:54:05,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:54:05,564 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 83 [2023-11-26 11:54:05,565 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 73 transitions, 166 flow. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:54:05,565 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:54:05,566 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 83 [2023-11-26 11:54:05,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:54:08,011 INFO L124 PetriNetUnfolderBase]: 8998/16360 cut-off events. [2023-11-26 11:54:08,011 INFO L125 PetriNetUnfolderBase]: For 670/670 co-relation queries the response was YES. [2023-11-26 11:54:08,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29321 conditions, 16360 events. 8998/16360 cut-off events. For 670/670 co-relation queries the response was YES. Maximal size of possible extension queue 646. Compared 136264 event pairs, 1292 based on Foata normal form. 330/15744 useless extension candidates. Maximal degree in co-relation 16776. Up to 9850 conditions per place. [2023-11-26 11:54:08,155 INFO L140 encePairwiseOnDemand]: 80/83 looper letters, 57 selfloop transitions, 2 changer transitions 0/95 dead transitions. [2023-11-26 11:54:08,156 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 95 transitions, 333 flow [2023-11-26 11:54:08,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:54:08,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:54:08,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 174 transitions. [2023-11-26 11:54:08,158 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6987951807228916 [2023-11-26 11:54:08,159 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 174 transitions. [2023-11-26 11:54:08,159 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 174 transitions. [2023-11-26 11:54:08,159 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:54:08,159 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 174 transitions. [2023-11-26 11:54:08,160 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 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) [2023-11-26 11:54:08,162 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 83.0) internal successors, (332), 4 states have internal predecessors, (332), 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) [2023-11-26 11:54:08,162 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 83.0) internal successors, (332), 4 states have internal predecessors, (332), 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) [2023-11-26 11:54:08,162 INFO L175 Difference]: Start difference. First operand has 76 places, 73 transitions, 166 flow. Second operand 3 states and 174 transitions. [2023-11-26 11:54:08,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 95 transitions, 333 flow [2023-11-26 11:54:08,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 95 transitions, 329 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 11:54:08,168 INFO L231 Difference]: Finished difference. Result has 75 places, 72 transitions, 164 flow [2023-11-26 11:54:08,169 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=164, PETRI_PLACES=75, PETRI_TRANSITIONS=72} [2023-11-26 11:54:08,171 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, -3 predicate places. [2023-11-26 11:54:08,172 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 72 transitions, 164 flow [2023-11-26 11:54:08,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:54:08,173 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:54:08,173 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:54:08,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-26 11:54:08,173 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-26 11:54:08,174 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:54:08,174 INFO L85 PathProgramCache]: Analyzing trace with hash 393956762, now seen corresponding path program 1 times [2023-11-26 11:54:08,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:54:08,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304444900] [2023-11-26 11:54:08,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:54:08,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:54:08,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:54:08,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:54:08,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:54:08,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304444900] [2023-11-26 11:54:08,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304444900] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:54:08,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:54:08,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:54:08,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124135901] [2023-11-26 11:54:08,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:54:08,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:54:08,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:54:08,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:54:08,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:54:08,316 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 83 [2023-11-26 11:54:08,317 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 72 transitions, 164 flow. Second operand has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 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) [2023-11-26 11:54:08,317 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:54:08,317 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 83 [2023-11-26 11:54:08,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:54:10,295 INFO L124 PetriNetUnfolderBase]: 9668/16533 cut-off events. [2023-11-26 11:54:10,295 INFO L125 PetriNetUnfolderBase]: For 968/968 co-relation queries the response was YES. [2023-11-26 11:54:10,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30789 conditions, 16533 events. 9668/16533 cut-off events. For 968/968 co-relation queries the response was YES. Maximal size of possible extension queue 712. Compared 129751 event pairs, 4088 based on Foata normal form. 333/15555 useless extension candidates. Maximal degree in co-relation 30403. Up to 8705 conditions per place. [2023-11-26 11:54:10,420 INFO L140 encePairwiseOnDemand]: 78/83 looper letters, 81 selfloop transitions, 4 changer transitions 0/119 dead transitions. [2023-11-26 11:54:10,420 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 119 transitions, 456 flow [2023-11-26 11:54:10,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:54:10,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 11:54:10,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 238 transitions. [2023-11-26 11:54:10,422 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7168674698795181 [2023-11-26 11:54:10,422 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 238 transitions. [2023-11-26 11:54:10,423 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 238 transitions. [2023-11-26 11:54:10,423 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:54:10,423 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 238 transitions. [2023-11-26 11:54:10,424 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 59.5) internal successors, (238), 4 states have internal predecessors, (238), 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) [2023-11-26 11:54:10,425 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 83.0) internal successors, (415), 5 states have internal predecessors, (415), 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) [2023-11-26 11:54:10,425 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 83.0) internal successors, (415), 5 states have internal predecessors, (415), 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) [2023-11-26 11:54:10,426 INFO L175 Difference]: Start difference. First operand has 75 places, 72 transitions, 164 flow. Second operand 4 states and 238 transitions. [2023-11-26 11:54:10,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 119 transitions, 456 flow [2023-11-26 11:54:10,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 119 transitions, 444 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 11:54:10,449 INFO L231 Difference]: Finished difference. Result has 75 places, 71 transitions, 166 flow [2023-11-26 11:54:10,449 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=166, PETRI_PLACES=75, PETRI_TRANSITIONS=71} [2023-11-26 11:54:10,450 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, -3 predicate places. [2023-11-26 11:54:10,450 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 71 transitions, 166 flow [2023-11-26 11:54:10,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 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) [2023-11-26 11:54:10,451 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:54:10,451 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:54:10,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-26 11:54:10,451 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-26 11:54:10,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:54:10,452 INFO L85 PathProgramCache]: Analyzing trace with hash -672241780, now seen corresponding path program 1 times [2023-11-26 11:54:10,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:54:10,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315867552] [2023-11-26 11:54:10,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:54:10,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:54:10,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:54:10,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:54:10,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:54:10,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315867552] [2023-11-26 11:54:10,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315867552] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:54:10,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:54:10,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:54:10,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131934077] [2023-11-26 11:54:10,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:54:10,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:54:10,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:54:10,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:54:10,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:54:10,575 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 83 [2023-11-26 11:54:10,576 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 71 transitions, 166 flow. Second operand has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 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) [2023-11-26 11:54:10,576 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:54:10,576 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 83 [2023-11-26 11:54:10,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:54:14,373 INFO L124 PetriNetUnfolderBase]: 16936/29240 cut-off events. [2023-11-26 11:54:14,374 INFO L125 PetriNetUnfolderBase]: For 2642/2642 co-relation queries the response was YES. [2023-11-26 11:54:14,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55266 conditions, 29240 events. 16936/29240 cut-off events. For 2642/2642 co-relation queries the response was YES. Maximal size of possible extension queue 1169. Compared 250298 event pairs, 9884 based on Foata normal form. 333/27356 useless extension candidates. Maximal degree in co-relation 52974. Up to 13493 conditions per place. [2023-11-26 11:54:14,586 INFO L140 encePairwiseOnDemand]: 78/83 looper letters, 90 selfloop transitions, 4 changer transitions 0/128 dead transitions. [2023-11-26 11:54:14,586 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 128 transitions, 494 flow [2023-11-26 11:54:14,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:54:14,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 11:54:14,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 247 transitions. [2023-11-26 11:54:14,589 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7439759036144579 [2023-11-26 11:54:14,589 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 247 transitions. [2023-11-26 11:54:14,590 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 247 transitions. [2023-11-26 11:54:14,590 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:54:14,590 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 247 transitions. [2023-11-26 11:54:14,591 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 61.75) internal successors, (247), 4 states have internal predecessors, (247), 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) [2023-11-26 11:54:14,593 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 83.0) internal successors, (415), 5 states have internal predecessors, (415), 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) [2023-11-26 11:54:14,593 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 83.0) internal successors, (415), 5 states have internal predecessors, (415), 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) [2023-11-26 11:54:14,594 INFO L175 Difference]: Start difference. First operand has 75 places, 71 transitions, 166 flow. Second operand 4 states and 247 transitions. [2023-11-26 11:54:14,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 128 transitions, 494 flow [2023-11-26 11:54:14,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 128 transitions, 480 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-26 11:54:14,611 INFO L231 Difference]: Finished difference. Result has 77 places, 74 transitions, 185 flow [2023-11-26 11:54:14,611 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=185, PETRI_PLACES=77, PETRI_TRANSITIONS=74} [2023-11-26 11:54:14,612 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, -1 predicate places. [2023-11-26 11:54:14,612 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 74 transitions, 185 flow [2023-11-26 11:54:14,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 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) [2023-11-26 11:54:14,613 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:54:14,613 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1] [2023-11-26 11:54:14,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-26 11:54:14,614 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-26 11:54:14,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:54:14,614 INFO L85 PathProgramCache]: Analyzing trace with hash 374392372, now seen corresponding path program 1 times [2023-11-26 11:54:14,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:54:14,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064676907] [2023-11-26 11:54:14,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:54:14,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:54:14,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:54:14,697 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-26 11:54:14,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:54:14,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064676907] [2023-11-26 11:54:14,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064676907] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:54:14,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:54:14,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:54:14,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29206133] [2023-11-26 11:54:14,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:54:14,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:54:14,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:54:14,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:54:14,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:54:14,713 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 83 [2023-11-26 11:54:14,714 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 74 transitions, 185 flow. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 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) [2023-11-26 11:54:14,714 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:54:14,714 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 83 [2023-11-26 11:54:14,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:54:18,771 INFO L124 PetriNetUnfolderBase]: 17906/31461 cut-off events. [2023-11-26 11:54:18,771 INFO L125 PetriNetUnfolderBase]: For 4570/4813 co-relation queries the response was YES. [2023-11-26 11:54:18,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59653 conditions, 31461 events. 17906/31461 cut-off events. For 4570/4813 co-relation queries the response was YES. Maximal size of possible extension queue 1179. Compared 277591 event pairs, 3220 based on Foata normal form. 540/30352 useless extension candidates. Maximal degree in co-relation 33867. Up to 18630 conditions per place. [2023-11-26 11:54:18,989 INFO L140 encePairwiseOnDemand]: 80/83 looper letters, 63 selfloop transitions, 2 changer transitions 0/98 dead transitions. [2023-11-26 11:54:18,989 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 98 transitions, 382 flow [2023-11-26 11:54:18,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:54:18,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:54:18,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 174 transitions. [2023-11-26 11:54:18,991 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6987951807228916 [2023-11-26 11:54:18,991 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 174 transitions. [2023-11-26 11:54:18,992 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 174 transitions. [2023-11-26 11:54:18,992 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:54:18,992 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 174 transitions. [2023-11-26 11:54:18,993 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 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) [2023-11-26 11:54:18,995 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 83.0) internal successors, (332), 4 states have internal predecessors, (332), 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) [2023-11-26 11:54:18,996 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 83.0) internal successors, (332), 4 states have internal predecessors, (332), 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) [2023-11-26 11:54:18,996 INFO L175 Difference]: Start difference. First operand has 77 places, 74 transitions, 185 flow. Second operand 3 states and 174 transitions. [2023-11-26 11:54:18,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 98 transitions, 382 flow [2023-11-26 11:54:19,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 98 transitions, 376 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 11:54:19,006 INFO L231 Difference]: Finished difference. Result has 77 places, 73 transitions, 184 flow [2023-11-26 11:54:19,006 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=184, PETRI_PLACES=77, PETRI_TRANSITIONS=73} [2023-11-26 11:54:19,007 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, -1 predicate places. [2023-11-26 11:54:19,007 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 73 transitions, 184 flow [2023-11-26 11:54:19,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 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) [2023-11-26 11:54:19,008 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:54:19,008 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1] [2023-11-26 11:54:19,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-26 11:54:19,008 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-26 11:54:19,009 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:54:19,009 INFO L85 PathProgramCache]: Analyzing trace with hash -1278752998, now seen corresponding path program 1 times [2023-11-26 11:54:19,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:54:19,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602105471] [2023-11-26 11:54:19,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:54:19,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:54:19,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:54:19,034 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 11:54:19,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:54:19,068 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 11:54:19,069 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-26 11:54:19,070 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2023-11-26 11:54:19,070 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2023-11-26 11:54:19,070 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2023-11-26 11:54:19,071 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2023-11-26 11:54:19,071 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2023-11-26 11:54:19,071 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2023-11-26 11:54:19,071 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2023-11-26 11:54:19,072 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2023-11-26 11:54:19,072 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 17 remaining) [2023-11-26 11:54:19,072 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 17 remaining) [2023-11-26 11:54:19,073 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 17 remaining) [2023-11-26 11:54:19,073 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2023-11-26 11:54:19,073 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2023-11-26 11:54:19,073 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2023-11-26 11:54:19,074 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2023-11-26 11:54:19,074 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2023-11-26 11:54:19,074 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2023-11-26 11:54:19,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-26 11:54:19,075 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:54:19,077 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-26 11:54:19,077 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-11-26 11:54:19,152 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-26 11:54:19,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 102 places, 109 transitions, 246 flow [2023-11-26 11:54:19,177 INFO L124 PetriNetUnfolderBase]: 16/120 cut-off events. [2023-11-26 11:54:19,177 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-11-26 11:54:19,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139 conditions, 120 events. 16/120 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 452 event pairs, 0 based on Foata normal form. 0/83 useless extension candidates. Maximal degree in co-relation 103. Up to 5 conditions per place. [2023-11-26 11:54:19,178 INFO L82 GeneralOperation]: Start removeDead. Operand has 102 places, 109 transitions, 246 flow [2023-11-26 11:54:19,181 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 102 places, 109 transitions, 246 flow [2023-11-26 11:54:19,183 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:54:19,183 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;@3dc42565, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:54:19,183 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2023-11-26 11:54:19,186 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 11:54:19,187 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2023-11-26 11:54:19,187 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-26 11:54:19,187 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:54:19,187 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-26 11:54:19,187 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-26 11:54:19,188 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:54:19,188 INFO L85 PathProgramCache]: Analyzing trace with hash 515105593, now seen corresponding path program 1 times [2023-11-26 11:54:19,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:54:19,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173451308] [2023-11-26 11:54:19,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:54:19,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:54:19,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:54:19,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:54:19,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:54:19,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173451308] [2023-11-26 11:54:19,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173451308] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:54:19,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:54:19,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:54:19,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768367455] [2023-11-26 11:54:19,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:54:19,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:54:19,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:54:19,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:54:19,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:54:19,258 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 109 [2023-11-26 11:54:19,258 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 109 transitions, 246 flow. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 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) [2023-11-26 11:54:19,259 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:54:19,259 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 109 [2023-11-26 11:54:19,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand