./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread-ext/09_fmaxsym-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_466315af-8580-4948-a223-6343bfa8f9e8/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_466315af-8580-4948-a223-6343bfa8f9e8/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_466315af-8580-4948-a223-6343bfa8f9e8/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_466315af-8580-4948-a223-6343bfa8f9e8/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-ext/09_fmaxsym-pthread.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_466315af-8580-4948-a223-6343bfa8f9e8/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_466315af-8580-4948-a223-6343bfa8f9e8/bin/uautomizer-verify-BQ2R08f2Ya --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1aa48207f53b07b4df182577acf14f7e5cc87542c4fcd33179113a019e67272d --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-28 23:45:02,657 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-28 23:45:02,725 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_466315af-8580-4948-a223-6343bfa8f9e8/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-28 23:45:02,730 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-28 23:45:02,730 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-28 23:45:02,756 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-28 23:45:02,757 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-28 23:45:02,757 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-28 23:45:02,758 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-28 23:45:02,758 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-28 23:45:02,759 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-28 23:45:02,759 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-28 23:45:02,760 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-28 23:45:02,761 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-28 23:45:02,761 INFO L153 SettingsManager]: * Use SBE=true [2023-11-28 23:45:02,762 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-28 23:45:02,762 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-28 23:45:02,763 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-28 23:45:02,763 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-28 23:45:02,764 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-28 23:45:02,765 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-28 23:45:02,768 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-28 23:45:02,768 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-28 23:45:02,769 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-28 23:45:02,769 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-28 23:45:02,770 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-28 23:45:02,770 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-28 23:45:02,770 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-28 23:45:02,771 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-28 23:45:02,771 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-28 23:45:02,772 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-28 23:45:02,772 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-28 23:45:02,772 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-28 23:45:02,773 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-28 23:45:02,773 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-28 23:45:02,773 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-28 23:45:02,773 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-28 23:45:02,774 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-28 23:45:02,774 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-28 23:45:02,774 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-28 23:45:02,774 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-28 23:45:02,775 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-28 23:45:02,775 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-28 23:45:02,775 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-28 23:45:02,775 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_466315af-8580-4948-a223-6343bfa8f9e8/bin/uautomizer-verify-BQ2R08f2Ya/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_466315af-8580-4948-a223-6343bfa8f9e8/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1aa48207f53b07b4df182577acf14f7e5cc87542c4fcd33179113a019e67272d [2023-11-28 23:45:02,991 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-28 23:45:03,013 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-28 23:45:03,015 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-28 23:45:03,017 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-28 23:45:03,017 INFO L274 PluginConnector]: CDTParser initialized [2023-11-28 23:45:03,018 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_466315af-8580-4948-a223-6343bfa8f9e8/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/pthread-ext/09_fmaxsym-pthread.i [2023-11-28 23:45:05,758 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-28 23:45:05,968 INFO L384 CDTParser]: Found 1 translation units. [2023-11-28 23:45:05,969 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_466315af-8580-4948-a223-6343bfa8f9e8/sv-benchmarks/c/pthread-ext/09_fmaxsym-pthread.i [2023-11-28 23:45:05,985 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_466315af-8580-4948-a223-6343bfa8f9e8/bin/uautomizer-verify-BQ2R08f2Ya/data/2787bae18/650313bb16024876ab0cf82bc12310f5/FLAG7358d5c66 [2023-11-28 23:45:05,997 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_466315af-8580-4948-a223-6343bfa8f9e8/bin/uautomizer-verify-BQ2R08f2Ya/data/2787bae18/650313bb16024876ab0cf82bc12310f5 [2023-11-28 23:45:05,999 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-28 23:45:06,001 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-28 23:45:06,002 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-28 23:45:06,003 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-28 23:45:06,009 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-28 23:45:06,009 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:45:05" (1/1) ... [2023-11-28 23:45:06,011 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50ae32bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:45:06, skipping insertion in model container [2023-11-28 23:45:06,011 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:45:05" (1/1) ... [2023-11-28 23:45:06,062 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-28 23:45:06,352 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-28 23:45:06,367 INFO L202 MainTranslator]: Completed pre-run [2023-11-28 23:45:06,406 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-28 23:45:06,449 INFO L206 MainTranslator]: Completed translation [2023-11-28 23:45:06,450 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:45:06 WrapperNode [2023-11-28 23:45:06,450 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-28 23:45:06,451 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-28 23:45:06,451 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-28 23:45:06,451 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-28 23:45:06,459 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:45:06" (1/1) ... [2023-11-28 23:45:06,472 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:45:06" (1/1) ... [2023-11-28 23:45:06,497 INFO L138 Inliner]: procedures = 165, calls = 31, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 88 [2023-11-28 23:45:06,498 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-28 23:45:06,498 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-28 23:45:06,498 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-28 23:45:06,499 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-28 23:45:06,509 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:45:06" (1/1) ... [2023-11-28 23:45:06,510 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:45:06" (1/1) ... [2023-11-28 23:45:06,513 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:45:06" (1/1) ... [2023-11-28 23:45:06,528 INFO L175 MemorySlicer]: Split 15 memory accesses to 4 slices as follows [2, 1, 5, 7]. 47 percent of accesses are in the largest equivalence class. The 13 initializations are split as follows [2, 0, 5, 6]. The 1 writes are split as follows [0, 1, 0, 0]. [2023-11-28 23:45:06,528 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:45:06" (1/1) ... [2023-11-28 23:45:06,529 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:45:06" (1/1) ... [2023-11-28 23:45:06,535 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:45:06" (1/1) ... [2023-11-28 23:45:06,538 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:45:06" (1/1) ... [2023-11-28 23:45:06,540 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:45:06" (1/1) ... [2023-11-28 23:45:06,542 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:45:06" (1/1) ... [2023-11-28 23:45:06,545 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-28 23:45:06,546 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-28 23:45:06,546 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-28 23:45:06,546 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-28 23:45:06,547 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:45:06" (1/1) ... [2023-11-28 23:45:06,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-28 23:45:06,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_466315af-8580-4948-a223-6343bfa8f9e8/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:45:06,593 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_466315af-8580-4948-a223-6343bfa8f9e8/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-28 23:45:06,604 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_466315af-8580-4948-a223-6343bfa8f9e8/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-28 23:45:06,627 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-28 23:45:06,635 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-28 23:45:06,635 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-28 23:45:06,635 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-28 23:45:06,635 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-11-28 23:45:06,636 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-11-28 23:45:06,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-28 23:45:06,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-28 23:45:06,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-28 23:45:06,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-28 23:45:06,636 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-28 23:45:06,636 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-28 23:45:06,637 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-28 23:45:06,637 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-28 23:45:06,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-28 23:45:06,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-28 23:45:06,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-28 23:45:06,638 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-28 23:45:06,638 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-28 23:45:06,638 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-28 23:45:06,638 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-28 23:45:06,640 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-28 23:45:06,773 INFO L241 CfgBuilder]: Building ICFG [2023-11-28 23:45:06,775 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-28 23:45:06,940 INFO L282 CfgBuilder]: Performing block encoding [2023-11-28 23:45:07,078 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-28 23:45:07,079 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-28 23:45:07,079 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:45:07 BoogieIcfgContainer [2023-11-28 23:45:07,079 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-28 23:45:07,083 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-28 23:45:07,083 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-28 23:45:07,086 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-28 23:45:07,087 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 11:45:05" (1/3) ... [2023-11-28 23:45:07,087 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@234e5def and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 11:45:07, skipping insertion in model container [2023-11-28 23:45:07,088 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:45:06" (2/3) ... [2023-11-28 23:45:07,088 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@234e5def and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 11:45:07, skipping insertion in model container [2023-11-28 23:45:07,088 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:45:07" (3/3) ... [2023-11-28 23:45:07,090 INFO L112 eAbstractionObserver]: Analyzing ICFG 09_fmaxsym-pthread.i [2023-11-28 23:45:07,097 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-28 23:45:07,105 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-28 23:45:07,105 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-11-28 23:45:07,105 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-28 23:45:07,140 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-28 23:45:07,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 28 places, 27 transitions, 58 flow [2023-11-28 23:45:07,194 INFO L124 PetriNetUnfolderBase]: 2/29 cut-off events. [2023-11-28 23:45:07,195 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-28 23:45:07,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33 conditions, 29 events. 2/29 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 33 event pairs, 0 based on Foata normal form. 0/21 useless extension candidates. Maximal degree in co-relation 24. Up to 2 conditions per place. [2023-11-28 23:45:07,198 INFO L82 GeneralOperation]: Start removeDead. Operand has 28 places, 27 transitions, 58 flow [2023-11-28 23:45:07,201 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 28 places, 27 transitions, 58 flow [2023-11-28 23:45:07,211 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-28 23:45:07,217 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;@32c4dd1b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-28 23:45:07,218 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2023-11-28 23:45:07,224 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-28 23:45:07,225 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2023-11-28 23:45:07,225 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-28 23:45:07,225 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:45:07,226 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-28 23:45:07,226 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-11-28 23:45:07,232 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:45:07,232 INFO L85 PathProgramCache]: Analyzing trace with hash 260107489, now seen corresponding path program 1 times [2023-11-28 23:45:07,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:45:07,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563357048] [2023-11-28 23:45:07,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:45:07,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:45:07,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:07,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:45:07,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:45:07,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563357048] [2023-11-28 23:45:07,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563357048] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:45:07,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:45:07,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-28 23:45:07,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517578907] [2023-11-28 23:45:07,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:45:07,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 23:45:07,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:45:07,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 23:45:07,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 23:45:07,555 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 27 [2023-11-28 23:45:07,557 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 27 transitions, 58 flow. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 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) [2023-11-28 23:45:07,557 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:45:07,557 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 27 [2023-11-28 23:45:07,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:45:07,623 INFO L124 PetriNetUnfolderBase]: 25/86 cut-off events. [2023-11-28 23:45:07,624 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-28 23:45:07,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154 conditions, 86 events. 25/86 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 197 event pairs, 2 based on Foata normal form. 3/86 useless extension candidates. Maximal degree in co-relation 141. Up to 53 conditions per place. [2023-11-28 23:45:07,627 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 16 selfloop transitions, 2 changer transitions 0/26 dead transitions. [2023-11-28 23:45:07,627 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 26 transitions, 92 flow [2023-11-28 23:45:07,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 23:45:07,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-28 23:45:07,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 46 transitions. [2023-11-28 23:45:07,640 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5679012345679012 [2023-11-28 23:45:07,640 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 46 transitions. [2023-11-28 23:45:07,641 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 46 transitions. [2023-11-28 23:45:07,642 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:45:07,644 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 46 transitions. [2023-11-28 23:45:07,645 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:45:07,648 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 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) [2023-11-28 23:45:07,649 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 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) [2023-11-28 23:45:07,650 INFO L175 Difference]: Start difference. First operand has 28 places, 27 transitions, 58 flow. Second operand 3 states and 46 transitions. [2023-11-28 23:45:07,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 26 transitions, 92 flow [2023-11-28 23:45:07,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 26 transitions, 92 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-28 23:45:07,654 INFO L231 Difference]: Finished difference. Result has 28 places, 24 transitions, 56 flow [2023-11-28 23:45:07,656 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=56, PETRI_PLACES=28, PETRI_TRANSITIONS=24} [2023-11-28 23:45:07,659 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 0 predicate places. [2023-11-28 23:45:07,660 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 24 transitions, 56 flow [2023-11-28 23:45:07,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 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) [2023-11-28 23:45:07,660 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:45:07,660 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-28 23:45:07,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-28 23:45:07,661 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-11-28 23:45:07,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:45:07,661 INFO L85 PathProgramCache]: Analyzing trace with hash -526615429, now seen corresponding path program 1 times [2023-11-28 23:45:07,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:45:07,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554520539] [2023-11-28 23:45:07,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:45:07,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:45:07,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-28 23:45:07,690 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-28 23:45:07,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-28 23:45:07,727 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-28 23:45:07,727 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-28 23:45:07,729 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 9 remaining) [2023-11-28 23:45:07,731 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 9 remaining) [2023-11-28 23:45:07,731 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 9 remaining) [2023-11-28 23:45:07,731 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 9 remaining) [2023-11-28 23:45:07,732 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 9 remaining) [2023-11-28 23:45:07,732 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 9 remaining) [2023-11-28 23:45:07,732 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 9 remaining) [2023-11-28 23:45:07,732 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 9 remaining) [2023-11-28 23:45:07,733 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 9 remaining) [2023-11-28 23:45:07,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-28 23:45:07,733 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-28 23:45:07,737 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-28 23:45:07,737 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-28 23:45:07,771 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-28 23:45:07,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 50 places, 49 transitions, 108 flow [2023-11-28 23:45:07,808 INFO L124 PetriNetUnfolderBase]: 4/54 cut-off events. [2023-11-28 23:45:07,808 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-28 23:45:07,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 54 events. 4/54 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 102 event pairs, 0 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 45. Up to 3 conditions per place. [2023-11-28 23:45:07,810 INFO L82 GeneralOperation]: Start removeDead. Operand has 50 places, 49 transitions, 108 flow [2023-11-28 23:45:07,812 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 50 places, 49 transitions, 108 flow [2023-11-28 23:45:07,813 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-28 23:45:07,815 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;@32c4dd1b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-28 23:45:07,815 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2023-11-28 23:45:07,820 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-28 23:45:07,820 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2023-11-28 23:45:07,820 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-28 23:45:07,820 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:45:07,821 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-28 23:45:07,821 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-28 23:45:07,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:45:07,822 INFO L85 PathProgramCache]: Analyzing trace with hash 306889287, now seen corresponding path program 1 times [2023-11-28 23:45:07,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:45:07,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864095475] [2023-11-28 23:45:07,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:45:07,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:45:07,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:07,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:45:07,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:45:07,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864095475] [2023-11-28 23:45:07,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864095475] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:45:07,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:45:07,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-28 23:45:07,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715430614] [2023-11-28 23:45:07,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:45:07,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 23:45:07,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:45:07,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 23:45:07,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 23:45:07,921 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 49 [2023-11-28 23:45:07,922 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 49 transitions, 108 flow. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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) [2023-11-28 23:45:07,922 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:45:07,922 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 49 [2023-11-28 23:45:07,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:45:08,213 INFO L124 PetriNetUnfolderBase]: 697/1439 cut-off events. [2023-11-28 23:45:08,213 INFO L125 PetriNetUnfolderBase]: For 34/34 co-relation queries the response was YES. [2023-11-28 23:45:08,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2612 conditions, 1439 events. 697/1439 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 8281 event pairs, 75 based on Foata normal form. 72/1454 useless extension candidates. Maximal degree in co-relation 2260. Up to 976 conditions per place. [2023-11-28 23:45:08,229 INFO L140 encePairwiseOnDemand]: 43/49 looper letters, 40 selfloop transitions, 2 changer transitions 0/59 dead transitions. [2023-11-28 23:45:08,230 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 59 transitions, 217 flow [2023-11-28 23:45:08,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 23:45:08,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-28 23:45:08,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 99 transitions. [2023-11-28 23:45:08,232 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.673469387755102 [2023-11-28 23:45:08,232 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 99 transitions. [2023-11-28 23:45:08,232 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 99 transitions. [2023-11-28 23:45:08,233 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:45:08,233 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 99 transitions. [2023-11-28 23:45:08,234 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 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) [2023-11-28 23:45:08,235 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 49.0) internal successors, (196), 4 states have internal predecessors, (196), 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) [2023-11-28 23:45:08,236 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 49.0) internal successors, (196), 4 states have internal predecessors, (196), 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) [2023-11-28 23:45:08,236 INFO L175 Difference]: Start difference. First operand has 50 places, 49 transitions, 108 flow. Second operand 3 states and 99 transitions. [2023-11-28 23:45:08,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 59 transitions, 217 flow [2023-11-28 23:45:08,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 59 transitions, 217 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-28 23:45:08,240 INFO L231 Difference]: Finished difference. Result has 50 places, 45 transitions, 104 flow [2023-11-28 23:45:08,240 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=50, PETRI_TRANSITIONS=45} [2023-11-28 23:45:08,241 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 0 predicate places. [2023-11-28 23:45:08,241 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 45 transitions, 104 flow [2023-11-28 23:45:08,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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) [2023-11-28 23:45:08,242 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:45:08,242 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-28 23:45:08,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-28 23:45:08,242 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-28 23:45:08,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:45:08,243 INFO L85 PathProgramCache]: Analyzing trace with hash 923633662, now seen corresponding path program 1 times [2023-11-28 23:45:08,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:45:08,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871162672] [2023-11-28 23:45:08,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:45:08,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:45:08,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:08,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:45:08,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:45:08,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871162672] [2023-11-28 23:45:08,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871162672] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:45:08,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:45:08,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-28 23:45:08,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669214830] [2023-11-28 23:45:08,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:45:08,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 23:45:08,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:45:08,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 23:45:08,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 23:45:08,351 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 49 [2023-11-28 23:45:08,352 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 45 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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) [2023-11-28 23:45:08,352 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:45:08,352 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 49 [2023-11-28 23:45:08,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:45:08,558 INFO L124 PetriNetUnfolderBase]: 639/1345 cut-off events. [2023-11-28 23:45:08,558 INFO L125 PetriNetUnfolderBase]: For 102/102 co-relation queries the response was YES. [2023-11-28 23:45:08,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2494 conditions, 1345 events. 639/1345 cut-off events. For 102/102 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 7694 event pairs, 75 based on Foata normal form. 36/1327 useless extension candidates. Maximal degree in co-relation 2150. Up to 882 conditions per place. [2023-11-28 23:45:08,568 INFO L140 encePairwiseOnDemand]: 46/49 looper letters, 39 selfloop transitions, 2 changer transitions 0/58 dead transitions. [2023-11-28 23:45:08,568 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 58 transitions, 217 flow [2023-11-28 23:45:08,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 23:45:08,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-28 23:45:08,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 93 transitions. [2023-11-28 23:45:08,570 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6326530612244898 [2023-11-28 23:45:08,570 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 93 transitions. [2023-11-28 23:45:08,570 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 93 transitions. [2023-11-28 23:45:08,571 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:45:08,571 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 93 transitions. [2023-11-28 23:45:08,572 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 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) [2023-11-28 23:45:08,573 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 49.0) internal successors, (196), 4 states have internal predecessors, (196), 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) [2023-11-28 23:45:08,573 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 49.0) internal successors, (196), 4 states have internal predecessors, (196), 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) [2023-11-28 23:45:08,574 INFO L175 Difference]: Start difference. First operand has 50 places, 45 transitions, 104 flow. Second operand 3 states and 93 transitions. [2023-11-28 23:45:08,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 58 transitions, 217 flow [2023-11-28 23:45:08,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 58 transitions, 213 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-28 23:45:08,577 INFO L231 Difference]: Finished difference. Result has 49 places, 44 transitions, 102 flow [2023-11-28 23:45:08,577 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=49, PETRI_TRANSITIONS=44} [2023-11-28 23:45:08,578 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -1 predicate places. [2023-11-28 23:45:08,578 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 44 transitions, 102 flow [2023-11-28 23:45:08,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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) [2023-11-28 23:45:08,578 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:45:08,579 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-11-28 23:45:08,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-28 23:45:08,579 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-28 23:45:08,580 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:45:08,580 INFO L85 PathProgramCache]: Analyzing trace with hash -1479054081, now seen corresponding path program 1 times [2023-11-28 23:45:08,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:45:08,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508877961] [2023-11-28 23:45:08,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:45:08,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:45:08,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:08,639 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-28 23:45:08,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:45:08,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508877961] [2023-11-28 23:45:08,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508877961] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:45:08,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:45:08,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-28 23:45:08,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781857037] [2023-11-28 23:45:08,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:45:08,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 23:45:08,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:45:08,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 23:45:08,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 23:45:08,650 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 49 [2023-11-28 23:45:08,651 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 44 transitions, 102 flow. Second operand has 3 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) [2023-11-28 23:45:08,651 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:45:08,651 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 49 [2023-11-28 23:45:08,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:45:08,893 INFO L124 PetriNetUnfolderBase]: 694/1399 cut-off events. [2023-11-28 23:45:08,893 INFO L125 PetriNetUnfolderBase]: For 106/106 co-relation queries the response was YES. [2023-11-28 23:45:08,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2642 conditions, 1399 events. 694/1399 cut-off events. For 106/106 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 7810 event pairs, 102 based on Foata normal form. 33/1385 useless extension candidates. Maximal degree in co-relation 2093. Up to 913 conditions per place. [2023-11-28 23:45:08,905 INFO L140 encePairwiseOnDemand]: 46/49 looper letters, 39 selfloop transitions, 2 changer transitions 0/56 dead transitions. [2023-11-28 23:45:08,905 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 56 transitions, 212 flow [2023-11-28 23:45:08,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 23:45:08,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-28 23:45:08,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 93 transitions. [2023-11-28 23:45:08,907 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6326530612244898 [2023-11-28 23:45:08,907 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 93 transitions. [2023-11-28 23:45:08,907 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 93 transitions. [2023-11-28 23:45:08,908 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:45:08,908 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 93 transitions. [2023-11-28 23:45:08,909 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 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) [2023-11-28 23:45:08,910 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 49.0) internal successors, (196), 4 states have internal predecessors, (196), 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) [2023-11-28 23:45:08,910 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 49.0) internal successors, (196), 4 states have internal predecessors, (196), 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) [2023-11-28 23:45:08,910 INFO L175 Difference]: Start difference. First operand has 49 places, 44 transitions, 102 flow. Second operand 3 states and 93 transitions. [2023-11-28 23:45:08,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 56 transitions, 212 flow [2023-11-28 23:45:08,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 56 transitions, 204 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-28 23:45:08,913 INFO L231 Difference]: Finished difference. Result has 48 places, 43 transitions, 100 flow [2023-11-28 23:45:08,913 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=48, PETRI_TRANSITIONS=43} [2023-11-28 23:45:08,914 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -2 predicate places. [2023-11-28 23:45:08,914 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 43 transitions, 100 flow [2023-11-28 23:45:08,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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) [2023-11-28 23:45:08,915 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:45:08,915 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1] [2023-11-28 23:45:08,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-28 23:45:08,915 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-28 23:45:08,916 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:45:08,916 INFO L85 PathProgramCache]: Analyzing trace with hash 1393950819, now seen corresponding path program 1 times [2023-11-28 23:45:08,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:45:08,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338308079] [2023-11-28 23:45:08,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:45:08,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:45:08,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-28 23:45:08,932 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-28 23:45:08,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-28 23:45:08,948 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-28 23:45:08,948 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-28 23:45:08,948 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2023-11-28 23:45:08,948 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2023-11-28 23:45:08,949 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2023-11-28 23:45:08,949 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2023-11-28 23:45:08,949 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2023-11-28 23:45:08,949 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2023-11-28 23:45:08,950 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 13 remaining) [2023-11-28 23:45:08,950 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2023-11-28 23:45:08,950 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2023-11-28 23:45:08,950 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2023-11-28 23:45:08,951 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2023-11-28 23:45:08,951 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2023-11-28 23:45:08,951 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2023-11-28 23:45:08,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-28 23:45:08,951 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-11-28 23:45:08,952 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-28 23:45:08,952 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-28 23:45:08,991 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-28 23:45:08,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 72 places, 71 transitions, 160 flow [2023-11-28 23:45:09,004 INFO L124 PetriNetUnfolderBase]: 6/79 cut-off events. [2023-11-28 23:45:09,004 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-28 23:45:09,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92 conditions, 79 events. 6/79 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 195 event pairs, 0 based on Foata normal form. 0/57 useless extension candidates. Maximal degree in co-relation 66. Up to 4 conditions per place. [2023-11-28 23:45:09,005 INFO L82 GeneralOperation]: Start removeDead. Operand has 72 places, 71 transitions, 160 flow [2023-11-28 23:45:09,007 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 72 places, 71 transitions, 160 flow [2023-11-28 23:45:09,008 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-28 23:45:09,010 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;@32c4dd1b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-28 23:45:09,010 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2023-11-28 23:45:09,013 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-28 23:45:09,013 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2023-11-28 23:45:09,013 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-28 23:45:09,013 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:45:09,014 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-28 23:45:09,014 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-28 23:45:09,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:45:09,015 INFO L85 PathProgramCache]: Analyzing trace with hash 374665123, now seen corresponding path program 1 times [2023-11-28 23:45:09,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:45:09,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372374647] [2023-11-28 23:45:09,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:45:09,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:45:09,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:09,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:45:09,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:45:09,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372374647] [2023-11-28 23:45:09,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372374647] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:45:09,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:45:09,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-28 23:45:09,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760773482] [2023-11-28 23:45:09,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:45:09,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 23:45:09,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:45:09,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 23:45:09,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 23:45:09,076 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 71 [2023-11-28 23:45:09,077 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 71 transitions, 160 flow. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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) [2023-11-28 23:45:09,077 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:45:09,077 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 71 [2023-11-28 23:45:09,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:45:11,675 INFO L124 PetriNetUnfolderBase]: 12445/20624 cut-off events. [2023-11-28 23:45:11,675 INFO L125 PetriNetUnfolderBase]: For 844/844 co-relation queries the response was YES. [2023-11-28 23:45:11,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38430 conditions, 20624 events. 12445/20624 cut-off events. For 844/844 co-relation queries the response was YES. Maximal size of possible extension queue 753. Compared 158874 event pairs, 1538 based on Foata normal form. 1227/21194 useless extension candidates. Maximal degree in co-relation 23858. Up to 14759 conditions per place. [2023-11-28 23:45:11,881 INFO L140 encePairwiseOnDemand]: 64/71 looper letters, 64 selfloop transitions, 2 changer transitions 0/92 dead transitions. [2023-11-28 23:45:11,882 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 92 transitions, 346 flow [2023-11-28 23:45:11,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 23:45:11,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-28 23:45:11,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 152 transitions. [2023-11-28 23:45:11,884 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7136150234741784 [2023-11-28 23:45:11,885 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 152 transitions. [2023-11-28 23:45:11,885 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 152 transitions. [2023-11-28 23:45:11,885 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:45:11,885 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 152 transitions. [2023-11-28 23:45:11,886 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 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) [2023-11-28 23:45:11,888 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 71.0) internal successors, (284), 4 states have internal predecessors, (284), 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) [2023-11-28 23:45:11,888 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 71.0) internal successors, (284), 4 states have internal predecessors, (284), 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) [2023-11-28 23:45:11,889 INFO L175 Difference]: Start difference. First operand has 72 places, 71 transitions, 160 flow. Second operand 3 states and 152 transitions. [2023-11-28 23:45:11,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 92 transitions, 346 flow [2023-11-28 23:45:11,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 92 transitions, 342 flow, removed 2 selfloop flow, removed 0 redundant places. [2023-11-28 23:45:11,895 INFO L231 Difference]: Finished difference. Result has 72 places, 66 transitions, 152 flow [2023-11-28 23:45:11,895 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=152, PETRI_PLACES=72, PETRI_TRANSITIONS=66} [2023-11-28 23:45:11,896 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 0 predicate places. [2023-11-28 23:45:11,896 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 66 transitions, 152 flow [2023-11-28 23:45:11,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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) [2023-11-28 23:45:11,897 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:45:11,897 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-28 23:45:11,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-28 23:45:11,897 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-28 23:45:11,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:45:11,898 INFO L85 PathProgramCache]: Analyzing trace with hash -1270282647, now seen corresponding path program 1 times [2023-11-28 23:45:11,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:45:11,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367485372] [2023-11-28 23:45:11,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:45:11,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:45:11,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:11,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:45:11,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:45:11,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367485372] [2023-11-28 23:45:11,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367485372] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:45:11,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:45:11,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-28 23:45:11,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190286815] [2023-11-28 23:45:11,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:45:11,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 23:45:11,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:45:11,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 23:45:11,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 23:45:11,992 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 71 [2023-11-28 23:45:11,993 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 66 transitions, 152 flow. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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) [2023-11-28 23:45:11,993 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:45:11,993 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 71 [2023-11-28 23:45:11,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:45:14,031 INFO L124 PetriNetUnfolderBase]: 11408/19188 cut-off events. [2023-11-28 23:45:14,031 INFO L125 PetriNetUnfolderBase]: For 1211/1211 co-relation queries the response was YES. [2023-11-28 23:45:14,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36189 conditions, 19188 events. 11408/19188 cut-off events. For 1211/1211 co-relation queries the response was YES. Maximal size of possible extension queue 712. Compared 148392 event pairs, 1538 based on Foata normal form. 399/18945 useless extension candidates. Maximal degree in co-relation 33580. Up to 13323 conditions per place. [2023-11-28 23:45:14,124 INFO L140 encePairwiseOnDemand]: 68/71 looper letters, 63 selfloop transitions, 2 changer transitions 0/91 dead transitions. [2023-11-28 23:45:14,124 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 91 transitions, 342 flow [2023-11-28 23:45:14,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 23:45:14,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-28 23:45:14,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 144 transitions. [2023-11-28 23:45:14,126 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.676056338028169 [2023-11-28 23:45:14,126 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 144 transitions. [2023-11-28 23:45:14,127 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 144 transitions. [2023-11-28 23:45:14,127 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:45:14,127 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 144 transitions. [2023-11-28 23:45:14,128 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 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) [2023-11-28 23:45:14,130 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 71.0) internal successors, (284), 4 states have internal predecessors, (284), 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) [2023-11-28 23:45:14,130 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 71.0) internal successors, (284), 4 states have internal predecessors, (284), 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) [2023-11-28 23:45:14,131 INFO L175 Difference]: Start difference. First operand has 72 places, 66 transitions, 152 flow. Second operand 3 states and 144 transitions. [2023-11-28 23:45:14,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 91 transitions, 342 flow [2023-11-28 23:45:14,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 91 transitions, 338 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-28 23:45:14,138 INFO L231 Difference]: Finished difference. Result has 71 places, 65 transitions, 150 flow [2023-11-28 23:45:14,139 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=150, PETRI_PLACES=71, PETRI_TRANSITIONS=65} [2023-11-28 23:45:14,140 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -1 predicate places. [2023-11-28 23:45:14,140 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 65 transitions, 150 flow [2023-11-28 23:45:14,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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) [2023-11-28 23:45:14,140 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:45:14,141 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-11-28 23:45:14,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-28 23:45:14,141 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-28 23:45:14,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:45:14,142 INFO L85 PathProgramCache]: Analyzing trace with hash -1003660897, now seen corresponding path program 1 times [2023-11-28 23:45:14,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:45:14,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811153550] [2023-11-28 23:45:14,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:45:14,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:45:14,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:14,206 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-28 23:45:14,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:45:14,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811153550] [2023-11-28 23:45:14,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811153550] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:45:14,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:45:14,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-28 23:45:14,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206363921] [2023-11-28 23:45:14,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:45:14,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 23:45:14,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:45:14,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 23:45:14,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 23:45:14,216 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 71 [2023-11-28 23:45:14,217 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 65 transitions, 150 flow. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:45:14,217 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:45:14,217 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 71 [2023-11-28 23:45:14,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:45:15,843 INFO L124 PetriNetUnfolderBase]: 12442/20632 cut-off events. [2023-11-28 23:45:15,844 INFO L125 PetriNetUnfolderBase]: For 1318/1318 co-relation queries the response was YES. [2023-11-28 23:45:15,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39168 conditions, 20632 events. 12442/20632 cut-off events. For 1318/1318 co-relation queries the response was YES. Maximal size of possible extension queue 752. Compared 157203 event pairs, 1565 based on Foata normal form. 396/20395 useless extension candidates. Maximal degree in co-relation 31240. Up to 14696 conditions per place. [2023-11-28 23:45:15,944 INFO L140 encePairwiseOnDemand]: 68/71 looper letters, 63 selfloop transitions, 2 changer transitions 0/89 dead transitions. [2023-11-28 23:45:15,944 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 89 transitions, 337 flow [2023-11-28 23:45:15,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 23:45:15,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-28 23:45:15,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 144 transitions. [2023-11-28 23:45:15,946 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.676056338028169 [2023-11-28 23:45:15,946 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 144 transitions. [2023-11-28 23:45:15,946 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 144 transitions. [2023-11-28 23:45:15,946 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:45:15,946 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 144 transitions. [2023-11-28 23:45:15,947 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 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) [2023-11-28 23:45:15,948 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 71.0) internal successors, (284), 4 states have internal predecessors, (284), 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) [2023-11-28 23:45:15,948 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 71.0) internal successors, (284), 4 states have internal predecessors, (284), 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) [2023-11-28 23:45:15,948 INFO L175 Difference]: Start difference. First operand has 71 places, 65 transitions, 150 flow. Second operand 3 states and 144 transitions. [2023-11-28 23:45:15,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 89 transitions, 337 flow [2023-11-28 23:45:15,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 89 transitions, 329 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-28 23:45:15,950 INFO L231 Difference]: Finished difference. Result has 70 places, 64 transitions, 148 flow [2023-11-28 23:45:15,951 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=148, PETRI_PLACES=70, PETRI_TRANSITIONS=64} [2023-11-28 23:45:15,951 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -2 predicate places. [2023-11-28 23:45:15,951 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 64 transitions, 148 flow [2023-11-28 23:45:15,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:45:15,952 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:45:15,952 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:45:15,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-28 23:45:15,952 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-28 23:45:15,952 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:45:15,952 INFO L85 PathProgramCache]: Analyzing trace with hash -1048716286, now seen corresponding path program 1 times [2023-11-28 23:45:15,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:45:15,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456900476] [2023-11-28 23:45:15,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:45:15,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:45:15,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:16,018 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-28 23:45:16,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:45:16,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456900476] [2023-11-28 23:45:16,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456900476] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:45:16,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:45:16,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-28 23:45:16,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742951380] [2023-11-28 23:45:16,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:45:16,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 23:45:16,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:45:16,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 23:45:16,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 23:45:16,027 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 71 [2023-11-28 23:45:16,028 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 64 transitions, 148 flow. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:45:16,028 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:45:16,028 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 71 [2023-11-28 23:45:16,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:45:17,398 INFO L124 PetriNetUnfolderBase]: 11408/19202 cut-off events. [2023-11-28 23:45:17,398 INFO L125 PetriNetUnfolderBase]: For 1204/1204 co-relation queries the response was YES. [2023-11-28 23:45:17,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36197 conditions, 19202 events. 11408/19202 cut-off events. For 1204/1204 co-relation queries the response was YES. Maximal size of possible extension queue 712. Compared 146825 event pairs, 1565 based on Foata normal form. 396/18983 useless extension candidates. Maximal degree in co-relation 26174. Up to 13266 conditions per place. [2023-11-28 23:45:17,465 INFO L140 encePairwiseOnDemand]: 68/71 looper letters, 62 selfloop transitions, 2 changer transitions 0/88 dead transitions. [2023-11-28 23:45:17,465 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 88 transitions, 329 flow [2023-11-28 23:45:17,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 23:45:17,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-28 23:45:17,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 143 transitions. [2023-11-28 23:45:17,466 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6713615023474179 [2023-11-28 23:45:17,466 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 143 transitions. [2023-11-28 23:45:17,466 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 143 transitions. [2023-11-28 23:45:17,466 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:45:17,466 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 143 transitions. [2023-11-28 23:45:17,467 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 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) [2023-11-28 23:45:17,467 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 71.0) internal successors, (284), 4 states have internal predecessors, (284), 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) [2023-11-28 23:45:17,468 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 71.0) internal successors, (284), 4 states have internal predecessors, (284), 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) [2023-11-28 23:45:17,468 INFO L175 Difference]: Start difference. First operand has 70 places, 64 transitions, 148 flow. Second operand 3 states and 143 transitions. [2023-11-28 23:45:17,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 88 transitions, 329 flow [2023-11-28 23:45:17,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 88 transitions, 325 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-28 23:45:17,472 INFO L231 Difference]: Finished difference. Result has 69 places, 63 transitions, 146 flow [2023-11-28 23:45:17,472 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=146, PETRI_PLACES=69, PETRI_TRANSITIONS=63} [2023-11-28 23:45:17,473 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -3 predicate places. [2023-11-28 23:45:17,473 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 63 transitions, 146 flow [2023-11-28 23:45:17,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:45:17,474 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:45:17,474 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1] [2023-11-28 23:45:17,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-28 23:45:17,474 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-28 23:45:17,474 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:45:17,474 INFO L85 PathProgramCache]: Analyzing trace with hash 1448174404, now seen corresponding path program 1 times [2023-11-28 23:45:17,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:45:17,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606270060] [2023-11-28 23:45:17,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:45:17,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:45:17,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:17,519 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-28 23:45:17,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:45:17,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606270060] [2023-11-28 23:45:17,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606270060] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:45:17,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:45:17,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-28 23:45:17,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219978853] [2023-11-28 23:45:17,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:45:17,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 23:45:17,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:45:17,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 23:45:17,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 23:45:17,527 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 71 [2023-11-28 23:45:17,527 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 63 transitions, 146 flow. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 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) [2023-11-28 23:45:17,527 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:45:17,528 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 71 [2023-11-28 23:45:17,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:45:19,042 INFO L124 PetriNetUnfolderBase]: 12376/20369 cut-off events. [2023-11-28 23:45:19,042 INFO L125 PetriNetUnfolderBase]: For 1300/1300 co-relation queries the response was YES. [2023-11-28 23:45:19,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38761 conditions, 20369 events. 12376/20369 cut-off events. For 1300/1300 co-relation queries the response was YES. Maximal size of possible extension queue 759. Compared 152887 event pairs, 2132 based on Foata normal form. 363/20126 useless extension candidates. Maximal degree in co-relation 28074. Up to 13673 conditions per place. [2023-11-28 23:45:19,159 INFO L140 encePairwiseOnDemand]: 68/71 looper letters, 62 selfloop transitions, 2 changer transitions 0/86 dead transitions. [2023-11-28 23:45:19,159 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 86 transitions, 324 flow [2023-11-28 23:45:19,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 23:45:19,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-28 23:45:19,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 143 transitions. [2023-11-28 23:45:19,160 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6713615023474179 [2023-11-28 23:45:19,160 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 143 transitions. [2023-11-28 23:45:19,161 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 143 transitions. [2023-11-28 23:45:19,161 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:45:19,161 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 143 transitions. [2023-11-28 23:45:19,161 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 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) [2023-11-28 23:45:19,162 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 71.0) internal successors, (284), 4 states have internal predecessors, (284), 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) [2023-11-28 23:45:19,162 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 71.0) internal successors, (284), 4 states have internal predecessors, (284), 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) [2023-11-28 23:45:19,162 INFO L175 Difference]: Start difference. First operand has 69 places, 63 transitions, 146 flow. Second operand 3 states and 143 transitions. [2023-11-28 23:45:19,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 86 transitions, 324 flow [2023-11-28 23:45:19,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 86 transitions, 316 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-28 23:45:19,166 INFO L231 Difference]: Finished difference. Result has 68 places, 62 transitions, 144 flow [2023-11-28 23:45:19,167 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=144, PETRI_PLACES=68, PETRI_TRANSITIONS=62} [2023-11-28 23:45:19,167 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -4 predicate places. [2023-11-28 23:45:19,168 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 62 transitions, 144 flow [2023-11-28 23:45:19,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 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) [2023-11-28 23:45:19,168 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:45:19,168 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1] [2023-11-28 23:45:19,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-28 23:45:19,168 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-28 23:45:19,169 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:45:19,169 INFO L85 PathProgramCache]: Analyzing trace with hash 1943720730, now seen corresponding path program 1 times [2023-11-28 23:45:19,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:45:19,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424734117] [2023-11-28 23:45:19,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:45:19,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:45:19,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-28 23:45:19,187 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-28 23:45:19,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-28 23:45:19,203 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-28 23:45:19,203 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-28 23:45:19,204 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2023-11-28 23:45:19,204 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2023-11-28 23:45:19,204 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2023-11-28 23:45:19,204 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2023-11-28 23:45:19,204 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2023-11-28 23:45:19,205 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2023-11-28 23:45:19,205 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2023-11-28 23:45:19,205 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2023-11-28 23:45:19,205 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 17 remaining) [2023-11-28 23:45:19,205 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 17 remaining) [2023-11-28 23:45:19,205 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 17 remaining) [2023-11-28 23:45:19,206 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2023-11-28 23:45:19,206 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2023-11-28 23:45:19,206 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2023-11-28 23:45:19,206 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2023-11-28 23:45:19,206 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2023-11-28 23:45:19,206 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2023-11-28 23:45:19,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-28 23:45:19,207 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-11-28 23:45:19,208 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-28 23:45:19,208 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-11-28 23:45:19,257 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-28 23:45:19,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 94 places, 93 transitions, 214 flow [2023-11-28 23:45:19,275 INFO L124 PetriNetUnfolderBase]: 8/104 cut-off events. [2023-11-28 23:45:19,275 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-11-28 23:45:19,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123 conditions, 104 events. 8/104 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 309 event pairs, 0 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 91. Up to 5 conditions per place. [2023-11-28 23:45:19,276 INFO L82 GeneralOperation]: Start removeDead. Operand has 94 places, 93 transitions, 214 flow [2023-11-28 23:45:19,278 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 94 places, 93 transitions, 214 flow [2023-11-28 23:45:19,279 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-28 23:45:19,280 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;@32c4dd1b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-28 23:45:19,280 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2023-11-28 23:45:19,283 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-28 23:45:19,283 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2023-11-28 23:45:19,283 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-28 23:45:19,283 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:45:19,283 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-28 23:45:19,284 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-28 23:45:19,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:45:19,284 INFO L85 PathProgramCache]: Analyzing trace with hash 463436341, now seen corresponding path program 1 times [2023-11-28 23:45:19,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:45:19,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47866260] [2023-11-28 23:45:19,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:45:19,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:45:19,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:19,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:45:19,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:45:19,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47866260] [2023-11-28 23:45:19,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47866260] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:45:19,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:45:19,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-28 23:45:19,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027411192] [2023-11-28 23:45:19,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:45:19,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 23:45:19,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:45:19,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 23:45:19,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 23:45:19,343 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 93 [2023-11-28 23:45:19,344 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 93 transitions, 214 flow. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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) [2023-11-28 23:45:19,344 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:45:19,344 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 93 [2023-11-28 23:45:19,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:45:40,608 INFO L124 PetriNetUnfolderBase]: 189589/279565 cut-off events. [2023-11-28 23:45:40,608 INFO L125 PetriNetUnfolderBase]: For 15548/15548 co-relation queries the response was YES. [2023-11-28 23:45:41,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 529692 conditions, 279565 events. 189589/279565 cut-off events. For 15548/15548 co-relation queries the response was YES. Maximal size of possible extension queue 8662. Compared 2414212 event pairs, 118311 based on Foata normal form. 18288/286421 useless extension candidates. Maximal degree in co-relation 359864. Up to 206302 conditions per place. [2023-11-28 23:45:42,068 INFO L140 encePairwiseOnDemand]: 85/93 looper letters, 88 selfloop transitions, 2 changer transitions 0/125 dead transitions. [2023-11-28 23:45:42,068 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 125 transitions, 479 flow [2023-11-28 23:45:42,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 23:45:42,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-28 23:45:42,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 205 transitions. [2023-11-28 23:45:42,070 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7347670250896058 [2023-11-28 23:45:42,070 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 205 transitions. [2023-11-28 23:45:42,070 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 205 transitions. [2023-11-28 23:45:42,070 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:45:42,071 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 205 transitions. [2023-11-28 23:45:42,071 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 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) [2023-11-28 23:45:42,072 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 93.0) internal successors, (372), 4 states have internal predecessors, (372), 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) [2023-11-28 23:45:42,073 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 93.0) internal successors, (372), 4 states have internal predecessors, (372), 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) [2023-11-28 23:45:42,073 INFO L175 Difference]: Start difference. First operand has 94 places, 93 transitions, 214 flow. Second operand 3 states and 205 transitions. [2023-11-28 23:45:42,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 125 transitions, 479 flow [2023-11-28 23:45:42,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 125 transitions, 467 flow, removed 6 selfloop flow, removed 0 redundant places. [2023-11-28 23:45:42,081 INFO L231 Difference]: Finished difference. Result has 94 places, 87 transitions, 200 flow [2023-11-28 23:45:42,081 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=200, PETRI_PLACES=94, PETRI_TRANSITIONS=87} [2023-11-28 23:45:42,082 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, 0 predicate places. [2023-11-28 23:45:42,082 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 87 transitions, 200 flow [2023-11-28 23:45:42,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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) [2023-11-28 23:45:42,082 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:45:42,082 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-28 23:45:42,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-28 23:45:42,083 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-28 23:45:42,083 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:45:42,083 INFO L85 PathProgramCache]: Analyzing trace with hash 1481625225, now seen corresponding path program 1 times [2023-11-28 23:45:42,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:45:42,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704789602] [2023-11-28 23:45:42,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:45:42,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:45:42,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:42,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:45:42,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:45:42,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704789602] [2023-11-28 23:45:42,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704789602] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:45:42,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:45:42,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-28 23:45:42,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804931805] [2023-11-28 23:45:42,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:45:42,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 23:45:42,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:45:42,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 23:45:42,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 23:45:42,137 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 93 [2023-11-28 23:45:42,138 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 87 transitions, 200 flow. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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) [2023-11-28 23:45:42,138 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:45:42,138 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 93 [2023-11-28 23:45:42,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:46:00,764 INFO L124 PetriNetUnfolderBase]: 173790/259638 cut-off events. [2023-11-28 23:46:00,764 INFO L125 PetriNetUnfolderBase]: For 13388/13388 co-relation queries the response was YES. [2023-11-28 23:46:01,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 494924 conditions, 259638 events. 173790/259638 cut-off events. For 13388/13388 co-relation queries the response was YES. Maximal size of possible extension queue 7578. Compared 2328176 event pairs, 24891 based on Foata normal form. 4392/256897 useless extension candidates. Maximal degree in co-relation 459314. Up to 186111 conditions per place. [2023-11-28 23:46:02,307 INFO L140 encePairwiseOnDemand]: 90/93 looper letters, 87 selfloop transitions, 2 changer transitions 0/124 dead transitions. [2023-11-28 23:46:02,307 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 124 transitions, 467 flow [2023-11-28 23:46:02,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 23:46:02,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-28 23:46:02,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 195 transitions. [2023-11-28 23:46:02,308 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6989247311827957 [2023-11-28 23:46:02,308 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 195 transitions. [2023-11-28 23:46:02,308 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 195 transitions. [2023-11-28 23:46:02,309 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:46:02,309 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 195 transitions. [2023-11-28 23:46:02,309 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 65.0) internal successors, (195), 3 states have internal predecessors, (195), 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) [2023-11-28 23:46:02,310 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 93.0) internal successors, (372), 4 states have internal predecessors, (372), 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) [2023-11-28 23:46:02,310 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 93.0) internal successors, (372), 4 states have internal predecessors, (372), 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) [2023-11-28 23:46:02,310 INFO L175 Difference]: Start difference. First operand has 94 places, 87 transitions, 200 flow. Second operand 3 states and 195 transitions. [2023-11-28 23:46:02,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 124 transitions, 467 flow [2023-11-28 23:46:02,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 124 transitions, 463 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-28 23:46:02,325 INFO L231 Difference]: Finished difference. Result has 93 places, 86 transitions, 198 flow [2023-11-28 23:46:02,325 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=198, PETRI_PLACES=93, PETRI_TRANSITIONS=86} [2023-11-28 23:46:02,325 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, -1 predicate places. [2023-11-28 23:46:02,326 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 86 transitions, 198 flow [2023-11-28 23:46:02,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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) [2023-11-28 23:46:02,326 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:46:02,326 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-11-28 23:46:02,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-28 23:46:02,326 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-28 23:46:02,326 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:46:02,326 INFO L85 PathProgramCache]: Analyzing trace with hash -2140066145, now seen corresponding path program 1 times [2023-11-28 23:46:02,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:46:02,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32107775] [2023-11-28 23:46:02,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:46:02,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:46:02,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:46:02,363 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-28 23:46:02,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:46:02,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32107775] [2023-11-28 23:46:02,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32107775] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:46:02,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:46:02,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-28 23:46:02,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291097089] [2023-11-28 23:46:02,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:46:02,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 23:46:02,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:46:02,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 23:46:02,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 23:46:02,372 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 93 [2023-11-28 23:46:02,372 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 86 transitions, 198 flow. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 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) [2023-11-28 23:46:02,372 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:46:02,372 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 93 [2023-11-28 23:46:02,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:46:22,530 INFO L124 PetriNetUnfolderBase]: 189586/278548 cut-off events. [2023-11-28 23:46:22,531 INFO L125 PetriNetUnfolderBase]: For 14714/14714 co-relation queries the response was YES. [2023-11-28 23:46:23,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 535213 conditions, 278548 events. 189586/278548 cut-off events. For 14714/14714 co-relation queries the response was YES. Maximal size of possible extension queue 8542. Compared 2385382 event pairs, 83856 based on Foata normal form. 4389/271745 useless extension candidates. Maximal degree in co-relation 430062. Up to 206239 conditions per place. [2023-11-28 23:46:24,058 INFO L140 encePairwiseOnDemand]: 90/93 looper letters, 87 selfloop transitions, 2 changer transitions 0/122 dead transitions. [2023-11-28 23:46:24,058 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 122 transitions, 462 flow [2023-11-28 23:46:24,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 23:46:24,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-28 23:46:24,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 195 transitions. [2023-11-28 23:46:24,060 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6989247311827957 [2023-11-28 23:46:24,060 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 195 transitions. [2023-11-28 23:46:24,060 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 195 transitions. [2023-11-28 23:46:24,060 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:46:24,060 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 195 transitions. [2023-11-28 23:46:24,061 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 65.0) internal successors, (195), 3 states have internal predecessors, (195), 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) [2023-11-28 23:46:24,062 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 93.0) internal successors, (372), 4 states have internal predecessors, (372), 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) [2023-11-28 23:46:24,062 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 93.0) internal successors, (372), 4 states have internal predecessors, (372), 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) [2023-11-28 23:46:24,063 INFO L175 Difference]: Start difference. First operand has 93 places, 86 transitions, 198 flow. Second operand 3 states and 195 transitions. [2023-11-28 23:46:24,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 122 transitions, 462 flow [2023-11-28 23:46:24,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 122 transitions, 454 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-28 23:46:24,078 INFO L231 Difference]: Finished difference. Result has 92 places, 85 transitions, 196 flow [2023-11-28 23:46:24,078 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=196, PETRI_PLACES=92, PETRI_TRANSITIONS=85} [2023-11-28 23:46:24,078 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, -2 predicate places. [2023-11-28 23:46:24,078 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 85 transitions, 196 flow [2023-11-28 23:46:24,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 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) [2023-11-28 23:46:24,079 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:46:24,079 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:46:24,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-28 23:46:24,079 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-28 23:46:24,079 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:46:24,079 INFO L85 PathProgramCache]: Analyzing trace with hash -1917540492, now seen corresponding path program 1 times [2023-11-28 23:46:24,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:46:24,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817687804] [2023-11-28 23:46:24,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:46:24,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:46:24,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:46:24,120 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-28 23:46:24,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:46:24,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817687804] [2023-11-28 23:46:24,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817687804] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:46:24,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:46:24,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-28 23:46:24,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705299592] [2023-11-28 23:46:24,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:46:24,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 23:46:24,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:46:24,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 23:46:24,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 23:46:24,129 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 93 [2023-11-28 23:46:24,129 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 85 transitions, 196 flow. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 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) [2023-11-28 23:46:24,129 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:46:24,129 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 93 [2023-11-28 23:46:24,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:46:41,987 INFO L124 PetriNetUnfolderBase]: 173790/255960 cut-off events. [2023-11-28 23:46:41,988 INFO L125 PetriNetUnfolderBase]: For 13517/13517 co-relation queries the response was YES. [2023-11-28 23:46:42,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 491240 conditions, 255960 events. 173790/255960 cut-off events. For 13517/13517 co-relation queries the response was YES. Maximal size of possible extension queue 7861. Compared 2177283 event pairs, 77025 based on Foata normal form. 4389/249882 useless extension candidates. Maximal degree in co-relation 357094. Up to 186054 conditions per place. [2023-11-28 23:46:43,326 INFO L140 encePairwiseOnDemand]: 90/93 looper letters, 86 selfloop transitions, 2 changer transitions 0/121 dead transitions. [2023-11-28 23:46:43,326 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 121 transitions, 454 flow [2023-11-28 23:46:43,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 23:46:43,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-28 23:46:43,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 194 transitions. [2023-11-28 23:46:43,328 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6953405017921147 [2023-11-28 23:46:43,328 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 194 transitions. [2023-11-28 23:46:43,328 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 194 transitions. [2023-11-28 23:46:43,328 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:46:43,328 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 194 transitions. [2023-11-28 23:46:43,329 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 64.66666666666667) internal successors, (194), 3 states have internal predecessors, (194), 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) [2023-11-28 23:46:43,329 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 93.0) internal successors, (372), 4 states have internal predecessors, (372), 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) [2023-11-28 23:46:43,330 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 93.0) internal successors, (372), 4 states have internal predecessors, (372), 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) [2023-11-28 23:46:43,330 INFO L175 Difference]: Start difference. First operand has 92 places, 85 transitions, 196 flow. Second operand 3 states and 194 transitions. [2023-11-28 23:46:43,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 121 transitions, 454 flow [2023-11-28 23:46:43,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 121 transitions, 450 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-28 23:46:43,345 INFO L231 Difference]: Finished difference. Result has 91 places, 84 transitions, 194 flow [2023-11-28 23:46:43,346 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=194, PETRI_PLACES=91, PETRI_TRANSITIONS=84} [2023-11-28 23:46:43,346 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, -3 predicate places. [2023-11-28 23:46:43,346 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 84 transitions, 194 flow [2023-11-28 23:46:43,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 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) [2023-11-28 23:46:43,346 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:46:43,346 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1] [2023-11-28 23:46:43,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-28 23:46:43,347 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-28 23:46:43,347 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:46:43,347 INFO L85 PathProgramCache]: Analyzing trace with hash -288248714, now seen corresponding path program 1 times [2023-11-28 23:46:43,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:46:43,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810164770] [2023-11-28 23:46:43,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:46:43,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:46:43,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:46:43,392 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-28 23:46:43,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:46:43,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810164770] [2023-11-28 23:46:43,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810164770] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:46:43,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:46:43,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-28 23:46:43,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689800134] [2023-11-28 23:46:43,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:46:43,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 23:46:43,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:46:43,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 23:46:43,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 23:46:43,401 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 93 [2023-11-28 23:46:43,401 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 84 transitions, 194 flow. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 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) [2023-11-28 23:46:43,401 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:46:43,401 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 93 [2023-11-28 23:46:43,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:47:02,657 INFO L124 PetriNetUnfolderBase]: 189520/279740 cut-off events. [2023-11-28 23:47:02,658 INFO L125 PetriNetUnfolderBase]: For 14748/14748 co-relation queries the response was YES. [2023-11-28 23:47:03,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 536261 conditions, 279740 events. 189520/279740 cut-off events. For 14748/14748 co-relation queries the response was YES. Maximal size of possible extension queue 8000. Compared 2447421 event pairs, 25485 based on Foata normal form. 4356/276902 useless extension candidates. Maximal degree in co-relation 389838. Up to 205216 conditions per place. [2023-11-28 23:47:04,281 INFO L140 encePairwiseOnDemand]: 90/93 looper letters, 86 selfloop transitions, 2 changer transitions 0/119 dead transitions. [2023-11-28 23:47:04,281 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 119 transitions, 449 flow [2023-11-28 23:47:04,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 23:47:04,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-28 23:47:04,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 194 transitions. [2023-11-28 23:47:04,283 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6953405017921147 [2023-11-28 23:47:04,283 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 194 transitions. [2023-11-28 23:47:04,283 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 194 transitions. [2023-11-28 23:47:04,283 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:47:04,284 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 194 transitions. [2023-11-28 23:47:04,284 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 64.66666666666667) internal successors, (194), 3 states have internal predecessors, (194), 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) [2023-11-28 23:47:04,285 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 93.0) internal successors, (372), 4 states have internal predecessors, (372), 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) [2023-11-28 23:47:04,285 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 93.0) internal successors, (372), 4 states have internal predecessors, (372), 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) [2023-11-28 23:47:04,285 INFO L175 Difference]: Start difference. First operand has 91 places, 84 transitions, 194 flow. Second operand 3 states and 194 transitions. [2023-11-28 23:47:04,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 119 transitions, 449 flow [2023-11-28 23:47:04,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 119 transitions, 441 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-28 23:47:04,306 INFO L231 Difference]: Finished difference. Result has 90 places, 83 transitions, 192 flow [2023-11-28 23:47:04,306 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=192, PETRI_PLACES=90, PETRI_TRANSITIONS=83} [2023-11-28 23:47:04,307 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, -4 predicate places. [2023-11-28 23:47:04,307 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 83 transitions, 192 flow [2023-11-28 23:47:04,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 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) [2023-11-28 23:47:04,307 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:47:04,308 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:47:04,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-28 23:47:04,308 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-28 23:47:04,308 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:47:04,309 INFO L85 PathProgramCache]: Analyzing trace with hash -345775042, now seen corresponding path program 1 times [2023-11-28 23:47:04,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:47:04,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388666407] [2023-11-28 23:47:04,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:47:04,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:47:04,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:47:04,371 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-28 23:47:04,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:47:04,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388666407] [2023-11-28 23:47:04,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388666407] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:47:04,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:47:04,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-28 23:47:04,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518791240] [2023-11-28 23:47:04,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:47:04,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 23:47:04,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:47:04,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 23:47:04,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 23:47:04,381 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 93 [2023-11-28 23:47:04,382 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 83 transitions, 192 flow. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 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) [2023-11-28 23:47:04,382 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:47:04,382 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 93 [2023-11-28 23:47:04,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:47:22,549 INFO L124 PetriNetUnfolderBase]: 173790/259654 cut-off events. [2023-11-28 23:47:22,549 INFO L125 PetriNetUnfolderBase]: For 13511/13511 co-relation queries the response was YES. [2023-11-28 23:47:22,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 494868 conditions, 259654 events. 173790/259654 cut-off events. For 13511/13511 co-relation queries the response was YES. Maximal size of possible extension queue 7524. Compared 2296150 event pairs, 25485 based on Foata normal form. 4356/256960 useless extension candidates. Maximal degree in co-relation 359734. Up to 185130 conditions per place. [2023-11-28 23:47:23,928 INFO L140 encePairwiseOnDemand]: 90/93 looper letters, 85 selfloop transitions, 2 changer transitions 0/118 dead transitions. [2023-11-28 23:47:23,928 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 118 transitions, 441 flow [2023-11-28 23:47:23,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 23:47:23,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-28 23:47:23,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 193 transitions. [2023-11-28 23:47:23,930 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6917562724014337 [2023-11-28 23:47:23,930 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 193 transitions. [2023-11-28 23:47:23,930 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 193 transitions. [2023-11-28 23:47:23,930 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:47:23,930 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 193 transitions. [2023-11-28 23:47:23,931 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 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) [2023-11-28 23:47:23,932 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 93.0) internal successors, (372), 4 states have internal predecessors, (372), 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) [2023-11-28 23:47:23,932 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 93.0) internal successors, (372), 4 states have internal predecessors, (372), 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) [2023-11-28 23:47:23,933 INFO L175 Difference]: Start difference. First operand has 90 places, 83 transitions, 192 flow. Second operand 3 states and 193 transitions. [2023-11-28 23:47:23,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 118 transitions, 441 flow [2023-11-28 23:47:23,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 118 transitions, 437 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-28 23:47:23,982 INFO L231 Difference]: Finished difference. Result has 89 places, 82 transitions, 190 flow [2023-11-28 23:47:23,982 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=190, PETRI_PLACES=89, PETRI_TRANSITIONS=82} [2023-11-28 23:47:23,982 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, -5 predicate places. [2023-11-28 23:47:23,982 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 82 transitions, 190 flow [2023-11-28 23:47:23,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 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) [2023-11-28 23:47:23,983 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:47:23,983 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:47:23,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-28 23:47:23,983 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-28 23:47:23,983 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:47:23,983 INFO L85 PathProgramCache]: Analyzing trace with hash -1590018624, now seen corresponding path program 1 times [2023-11-28 23:47:23,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:47:23,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694118709] [2023-11-28 23:47:23,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:47:23,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:47:23,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:47:24,021 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-28 23:47:24,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:47:24,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694118709] [2023-11-28 23:47:24,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694118709] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:47:24,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:47:24,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-28 23:47:24,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980131772] [2023-11-28 23:47:24,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:47:24,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 23:47:24,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:47:24,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 23:47:24,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 23:47:24,029 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 93 [2023-11-28 23:47:24,029 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 82 transitions, 190 flow. Second operand has 3 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) [2023-11-28 23:47:24,029 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:47:24,029 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 93 [2023-11-28 23:47:24,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:47:42,276 INFO L124 PetriNetUnfolderBase]: 188431/277396 cut-off events. [2023-11-28 23:47:42,276 INFO L125 PetriNetUnfolderBase]: For 14717/14717 co-relation queries the response was YES. [2023-11-28 23:47:42,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 531970 conditions, 277396 events. 188431/277396 cut-off events. For 14717/14717 co-relation queries the response was YES. Maximal size of possible extension queue 8110. Compared 2398698 event pairs, 34692 based on Foata normal form. 3993/274252 useless extension candidates. Maximal degree in co-relation 386916. Up to 190333 conditions per place. [2023-11-28 23:47:43,850 INFO L140 encePairwiseOnDemand]: 90/93 looper letters, 85 selfloop transitions, 2 changer transitions 0/116 dead transitions. [2023-11-28 23:47:43,850 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 116 transitions, 436 flow [2023-11-28 23:47:43,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 23:47:43,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-28 23:47:43,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 193 transitions. [2023-11-28 23:47:43,851 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6917562724014337 [2023-11-28 23:47:43,852 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 193 transitions. [2023-11-28 23:47:43,852 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 193 transitions. [2023-11-28 23:47:43,852 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:47:43,852 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 193 transitions. [2023-11-28 23:47:43,853 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 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) [2023-11-28 23:47:43,853 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 93.0) internal successors, (372), 4 states have internal predecessors, (372), 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) [2023-11-28 23:47:43,853 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 93.0) internal successors, (372), 4 states have internal predecessors, (372), 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) [2023-11-28 23:47:43,853 INFO L175 Difference]: Start difference. First operand has 89 places, 82 transitions, 190 flow. Second operand 3 states and 193 transitions. [2023-11-28 23:47:43,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 116 transitions, 436 flow [2023-11-28 23:47:43,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 116 transitions, 428 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-28 23:47:43,889 INFO L231 Difference]: Finished difference. Result has 88 places, 81 transitions, 188 flow [2023-11-28 23:47:43,889 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=188, PETRI_PLACES=88, PETRI_TRANSITIONS=81} [2023-11-28 23:47:43,889 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, -6 predicate places. [2023-11-28 23:47:43,889 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 81 transitions, 188 flow [2023-11-28 23:47:43,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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) [2023-11-28 23:47:43,889 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:47:43,889 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1] [2023-11-28 23:47:43,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-28 23:47:43,890 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-28 23:47:43,890 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:47:43,890 INFO L85 PathProgramCache]: Analyzing trace with hash -2045970640, now seen corresponding path program 1 times [2023-11-28 23:47:43,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:47:43,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035072068] [2023-11-28 23:47:43,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:47:43,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:47:43,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-28 23:47:43,901 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-28 23:47:43,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-28 23:47:43,911 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-28 23:47:43,911 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-28 23:47:43,912 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 21 remaining) [2023-11-28 23:47:43,912 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 21 remaining) [2023-11-28 23:47:43,912 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 21 remaining) [2023-11-28 23:47:43,912 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 21 remaining) [2023-11-28 23:47:43,912 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 21 remaining) [2023-11-28 23:47:43,912 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 21 remaining) [2023-11-28 23:47:43,912 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 21 remaining) [2023-11-28 23:47:43,912 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 21 remaining) [2023-11-28 23:47:43,912 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 21 remaining) [2023-11-28 23:47:43,913 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 21 remaining) [2023-11-28 23:47:43,913 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 21 remaining) [2023-11-28 23:47:43,913 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 21 remaining) [2023-11-28 23:47:43,913 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 21 remaining) [2023-11-28 23:47:43,913 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 21 remaining) [2023-11-28 23:47:43,913 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 21 remaining) [2023-11-28 23:47:43,913 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 21 remaining) [2023-11-28 23:47:43,913 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 21 remaining) [2023-11-28 23:47:43,913 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 21 remaining) [2023-11-28 23:47:43,914 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 21 remaining) [2023-11-28 23:47:43,914 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 21 remaining) [2023-11-28 23:47:43,914 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 21 remaining) [2023-11-28 23:47:43,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-28 23:47:43,914 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:47:43,915 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-28 23:47:43,915 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-11-28 23:47:43,954 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-28 23:47:43,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 116 places, 115 transitions, 270 flow [2023-11-28 23:47:43,967 INFO L124 PetriNetUnfolderBase]: 10/129 cut-off events. [2023-11-28 23:47:43,967 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2023-11-28 23:47:43,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155 conditions, 129 events. 10/129 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 419 event pairs, 0 based on Foata normal form. 0/93 useless extension candidates. Maximal degree in co-relation 122. Up to 6 conditions per place. [2023-11-28 23:47:43,968 INFO L82 GeneralOperation]: Start removeDead. Operand has 116 places, 115 transitions, 270 flow [2023-11-28 23:47:43,969 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 116 places, 115 transitions, 270 flow [2023-11-28 23:47:43,970 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-28 23:47:43,970 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;@32c4dd1b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-28 23:47:43,970 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2023-11-28 23:47:43,971 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-28 23:47:43,971 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2023-11-28 23:47:43,971 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-28 23:47:43,972 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:47:43,972 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-28 23:47:43,972 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-11-28 23:47:43,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:47:43,972 INFO L85 PathProgramCache]: Analyzing trace with hash 573200925, now seen corresponding path program 1 times [2023-11-28 23:47:43,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:47:43,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024443752] [2023-11-28 23:47:43,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:47:43,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:47:43,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:47:43,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:47:43,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:47:43,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024443752] [2023-11-28 23:47:43,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024443752] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:47:43,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:47:43,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-28 23:47:43,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338423013] [2023-11-28 23:47:43,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:47:43,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 23:47:43,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:47:43,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 23:47:43,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 23:47:44,004 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 115 [2023-11-28 23:47:44,004 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 115 transitions, 270 flow. Second operand has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 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) [2023-11-28 23:47:44,004 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:47:44,004 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 115 [2023-11-28 23:47:44,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand