./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread-lit/sssc12.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_dba431e6-a671-4560-9f5a-ea785d79f08f/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dba431e6-a671-4560-9f5a-ea785d79f08f/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_dba431e6-a671-4560-9f5a-ea785d79f08f/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dba431e6-a671-4560-9f5a-ea785d79f08f/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-lit/sssc12.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dba431e6-a671-4560-9f5a-ea785d79f08f/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_dba431e6-a671-4560-9f5a-ea785d79f08f/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 f04269da33313e0538e960083eba1e7b90d9e89847d2a89d06392d6991a3ed98 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 05:43:22,617 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 05:43:22,689 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dba431e6-a671-4560-9f5a-ea785d79f08f/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-29 05:43:22,694 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 05:43:22,695 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 05:43:22,721 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 05:43:22,722 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 05:43:22,723 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 05:43:22,723 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 05:43:22,724 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 05:43:22,725 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 05:43:22,725 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 05:43:22,726 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 05:43:22,726 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 05:43:22,727 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 05:43:22,728 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 05:43:22,728 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 05:43:22,729 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 05:43:22,729 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 05:43:22,729 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 05:43:22,730 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 05:43:22,730 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 05:43:22,731 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 05:43:22,731 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 05:43:22,732 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-29 05:43:22,732 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 05:43:22,733 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 05:43:22,733 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 05:43:22,733 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 05:43:22,734 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 05:43:22,734 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 05:43:22,734 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 05:43:22,735 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 05:43:22,735 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 05:43:22,735 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 05:43:22,736 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 05:43:22,736 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 05:43:22,736 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 05:43:22,736 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 05:43:22,736 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 05:43:22,737 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 05:43:22,737 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 05:43:22,737 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 05:43:22,737 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 05:43:22,738 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_dba431e6-a671-4560-9f5a-ea785d79f08f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dba431e6-a671-4560-9f5a-ea785d79f08f/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f04269da33313e0538e960083eba1e7b90d9e89847d2a89d06392d6991a3ed98 [2023-11-29 05:43:22,962 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 05:43:22,983 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 05:43:22,986 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 05:43:22,987 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 05:43:22,987 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 05:43:22,989 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dba431e6-a671-4560-9f5a-ea785d79f08f/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/pthread-lit/sssc12.i [2023-11-29 05:43:25,705 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 05:43:25,956 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 05:43:25,956 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dba431e6-a671-4560-9f5a-ea785d79f08f/sv-benchmarks/c/pthread-lit/sssc12.i [2023-11-29 05:43:25,973 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dba431e6-a671-4560-9f5a-ea785d79f08f/bin/uautomizer-verify-BQ2R08f2Ya/data/5c2285692/623071bd8bc744ff9886255e94c558ba/FLAGf13f60769 [2023-11-29 05:43:25,984 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dba431e6-a671-4560-9f5a-ea785d79f08f/bin/uautomizer-verify-BQ2R08f2Ya/data/5c2285692/623071bd8bc744ff9886255e94c558ba [2023-11-29 05:43:25,987 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 05:43:25,989 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 05:43:25,990 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 05:43:25,990 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 05:43:25,994 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 05:43:25,995 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 05:43:25" (1/1) ... [2023-11-29 05:43:25,996 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@452438cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:43:25, skipping insertion in model container [2023-11-29 05:43:25,996 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 05:43:25" (1/1) ... [2023-11-29 05:43:26,040 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 05:43:26,379 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 05:43:26,387 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 05:43:26,431 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 05:43:26,473 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 05:43:26,474 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 05:43:26,480 INFO L206 MainTranslator]: Completed translation [2023-11-29 05:43:26,480 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:43:26 WrapperNode [2023-11-29 05:43:26,480 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 05:43:26,481 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 05:43:26,481 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 05:43:26,482 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 05:43:26,487 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:43:26" (1/1) ... [2023-11-29 05:43:26,504 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:43:26" (1/1) ... [2023-11-29 05:43:26,527 INFO L138 Inliner]: procedures = 275, calls = 24, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 91 [2023-11-29 05:43:26,527 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 05:43:26,528 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 05:43:26,528 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 05:43:26,528 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 05:43:26,538 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:43:26" (1/1) ... [2023-11-29 05:43:26,539 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:43:26" (1/1) ... [2023-11-29 05:43:26,542 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:43:26" (1/1) ... [2023-11-29 05:43:26,557 INFO L175 MemorySlicer]: Split 4 memory accesses to 3 slices as follows [2, 1, 1]. 50 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 2 writes are split as follows [0, 1, 1]. [2023-11-29 05:43:26,557 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:43:26" (1/1) ... [2023-11-29 05:43:26,558 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:43:26" (1/1) ... [2023-11-29 05:43:26,565 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:43:26" (1/1) ... [2023-11-29 05:43:26,568 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:43:26" (1/1) ... [2023-11-29 05:43:26,570 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:43:26" (1/1) ... [2023-11-29 05:43:26,572 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:43:26" (1/1) ... [2023-11-29 05:43:26,575 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 05:43:26,576 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 05:43:26,576 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 05:43:26,576 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 05:43:26,577 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:43:26" (1/1) ... [2023-11-29 05:43:26,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 05:43:26,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dba431e6-a671-4560-9f5a-ea785d79f08f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:43:26,602 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dba431e6-a671-4560-9f5a-ea785d79f08f/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 05:43:26,604 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dba431e6-a671-4560-9f5a-ea785d79f08f/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 05:43:26,628 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-29 05:43:26,628 INFO L130 BoogieDeclarations]: Found specification of procedure thr [2023-11-29 05:43:26,629 INFO L138 BoogieDeclarations]: Found implementation of procedure thr [2023-11-29 05:43:26,629 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 05:43:26,629 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 05:43:26,629 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-29 05:43:26,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 05:43:26,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-29 05:43:26,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-29 05:43:26,629 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-29 05:43:26,630 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 05:43:26,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 05:43:26,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 05:43:26,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 05:43:26,630 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 05:43:26,630 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 05:43:26,632 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-29 05:43:26,750 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 05:43:26,753 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 05:43:26,930 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 05:43:27,067 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 05:43:27,068 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-29 05:43:27,068 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 05:43:27 BoogieIcfgContainer [2023-11-29 05:43:27,068 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 05:43:27,071 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 05:43:27,071 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 05:43:27,074 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 05:43:27,074 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 05:43:25" (1/3) ... [2023-11-29 05:43:27,074 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@377ab7d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 05:43:27, skipping insertion in model container [2023-11-29 05:43:27,075 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:43:26" (2/3) ... [2023-11-29 05:43:27,075 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@377ab7d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 05:43:27, skipping insertion in model container [2023-11-29 05:43:27,075 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 05:43:27" (3/3) ... [2023-11-29 05:43:27,077 INFO L112 eAbstractionObserver]: Analyzing ICFG sssc12.i [2023-11-29 05:43:27,083 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-29 05:43:27,091 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 05:43:27,092 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-11-29 05:43:27,092 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 05:43:27,124 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-29 05:43:27,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 29 places, 28 transitions, 60 flow [2023-11-29 05:43:27,179 INFO L124 PetriNetUnfolderBase]: 2/30 cut-off events. [2023-11-29 05:43:27,179 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 05:43:27,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34 conditions, 30 events. 2/30 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 26 event pairs, 0 based on Foata normal form. 0/20 useless extension candidates. Maximal degree in co-relation 25. Up to 2 conditions per place. [2023-11-29 05:43:27,182 INFO L82 GeneralOperation]: Start removeDead. Operand has 29 places, 28 transitions, 60 flow [2023-11-29 05:43:27,186 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 29 places, 28 transitions, 60 flow [2023-11-29 05:43:27,197 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 05:43:27,202 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;@b3d317, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 05:43:27,203 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2023-11-29 05:43:27,209 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 05:43:27,209 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2023-11-29 05:43:27,209 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 05:43:27,209 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:43:27,210 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-29 05:43:27,210 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-29 05:43:27,215 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:43:27,215 INFO L85 PathProgramCache]: Analyzing trace with hash 93545415, now seen corresponding path program 1 times [2023-11-29 05:43:27,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:43:27,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316104713] [2023-11-29 05:43:27,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:43:27,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:43:27,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 05:43:27,333 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 05:43:27,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 05:43:27,377 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 05:43:27,379 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-29 05:43:27,380 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2023-11-29 05:43:27,381 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2023-11-29 05:43:27,382 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2023-11-29 05:43:27,382 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2023-11-29 05:43:27,383 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2023-11-29 05:43:27,383 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2023-11-29 05:43:27,383 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 13 remaining) [2023-11-29 05:43:27,384 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2023-11-29 05:43:27,384 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2023-11-29 05:43:27,384 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2023-11-29 05:43:27,384 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2023-11-29 05:43:27,385 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2023-11-29 05:43:27,385 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2023-11-29 05:43:27,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 05:43:27,386 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-29 05:43:27,389 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-29 05:43:27,390 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-29 05:43:27,419 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-29 05:43:27,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 52 places, 51 transitions, 112 flow [2023-11-29 05:43:27,438 INFO L124 PetriNetUnfolderBase]: 4/56 cut-off events. [2023-11-29 05:43:27,438 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-29 05:43:27,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64 conditions, 56 events. 4/56 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 120 event pairs, 0 based on Foata normal form. 0/37 useless extension candidates. Maximal degree in co-relation 47. Up to 3 conditions per place. [2023-11-29 05:43:27,440 INFO L82 GeneralOperation]: Start removeDead. Operand has 52 places, 51 transitions, 112 flow [2023-11-29 05:43:27,442 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 52 places, 51 transitions, 112 flow [2023-11-29 05:43:27,444 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 05:43:27,445 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;@b3d317, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 05:43:27,445 INFO L358 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2023-11-29 05:43:27,450 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 05:43:27,451 INFO L124 PetriNetUnfolderBase]: 0/13 cut-off events. [2023-11-29 05:43:27,451 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-29 05:43:27,451 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:43:27,451 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:43:27,451 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-29 05:43:27,452 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:43:27,452 INFO L85 PathProgramCache]: Analyzing trace with hash -1846438725, now seen corresponding path program 1 times [2023-11-29 05:43:27,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:43:27,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457005200] [2023-11-29 05:43:27,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:43:27,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:43:27,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:43:27,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:43:27,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:43:27,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457005200] [2023-11-29 05:43:27,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457005200] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:43:27,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:43:27,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 05:43:27,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566331247] [2023-11-29 05:43:27,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:43:27,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:43:27,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:43:27,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:43:27,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:43:27,673 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 51 [2023-11-29 05:43:27,675 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 51 transitions, 112 flow. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:43:27,676 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:43:27,676 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 51 [2023-11-29 05:43:27,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:43:28,006 INFO L124 PetriNetUnfolderBase]: 898/1837 cut-off events. [2023-11-29 05:43:28,007 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2023-11-29 05:43:28,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3259 conditions, 1837 events. 898/1837 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 11873 event pairs, 328 based on Foata normal form. 140/1671 useless extension candidates. Maximal degree in co-relation 1146. Up to 856 conditions per place. [2023-11-29 05:43:28,024 INFO L140 encePairwiseOnDemand]: 39/51 looper letters, 45 selfloop transitions, 3 changer transitions 0/69 dead transitions. [2023-11-29 05:43:28,024 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 69 transitions, 249 flow [2023-11-29 05:43:28,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:43:28,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 05:43:28,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 121 transitions. [2023-11-29 05:43:28,036 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7908496732026143 [2023-11-29 05:43:28,037 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 121 transitions. [2023-11-29 05:43:28,037 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 121 transitions. [2023-11-29 05:43:28,038 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:43:28,040 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 121 transitions. [2023-11-29 05:43:28,042 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:43:28,046 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 51.0) internal successors, (204), 4 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:43:28,046 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 51.0) internal successors, (204), 4 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:43:28,048 INFO L175 Difference]: Start difference. First operand has 52 places, 51 transitions, 112 flow. Second operand 3 states and 121 transitions. [2023-11-29 05:43:28,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 69 transitions, 249 flow [2023-11-29 05:43:28,051 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 69 transitions, 249 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 05:43:28,055 INFO L231 Difference]: Finished difference. Result has 54 places, 52 transitions, 143 flow [2023-11-29 05:43:28,057 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=143, PETRI_PLACES=54, PETRI_TRANSITIONS=52} [2023-11-29 05:43:28,059 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 2 predicate places. [2023-11-29 05:43:28,059 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 52 transitions, 143 flow [2023-11-29 05:43:28,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:43:28,060 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:43:28,060 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1] [2023-11-29 05:43:28,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 05:43:28,061 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-29 05:43:28,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:43:28,061 INFO L85 PathProgramCache]: Analyzing trace with hash -2046199177, now seen corresponding path program 1 times [2023-11-29 05:43:28,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:43:28,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633404964] [2023-11-29 05:43:28,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:43:28,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:43:28,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 05:43:28,087 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 05:43:28,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 05:43:28,108 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 05:43:28,108 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-29 05:43:28,108 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 19 remaining) [2023-11-29 05:43:28,109 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 19 remaining) [2023-11-29 05:43:28,109 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 19 remaining) [2023-11-29 05:43:28,109 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 19 remaining) [2023-11-29 05:43:28,109 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 19 remaining) [2023-11-29 05:43:28,110 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 19 remaining) [2023-11-29 05:43:28,110 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 19 remaining) [2023-11-29 05:43:28,110 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 19 remaining) [2023-11-29 05:43:28,110 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 19 remaining) [2023-11-29 05:43:28,111 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 19 remaining) [2023-11-29 05:43:28,111 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 19 remaining) [2023-11-29 05:43:28,111 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 19 remaining) [2023-11-29 05:43:28,111 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 19 remaining) [2023-11-29 05:43:28,112 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 19 remaining) [2023-11-29 05:43:28,112 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 19 remaining) [2023-11-29 05:43:28,112 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 19 remaining) [2023-11-29 05:43:28,112 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 19 remaining) [2023-11-29 05:43:28,113 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 19 remaining) [2023-11-29 05:43:28,113 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 19 remaining) [2023-11-29 05:43:28,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 05:43:28,113 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-29 05:43:28,114 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-29 05:43:28,114 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-29 05:43:28,145 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-29 05:43:28,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 75 places, 74 transitions, 166 flow [2023-11-29 05:43:28,155 INFO L124 PetriNetUnfolderBase]: 6/82 cut-off events. [2023-11-29 05:43:28,155 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-29 05:43:28,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 82 events. 6/82 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 237 event pairs, 0 based on Foata normal form. 0/54 useless extension candidates. Maximal degree in co-relation 69. Up to 4 conditions per place. [2023-11-29 05:43:28,156 INFO L82 GeneralOperation]: Start removeDead. Operand has 75 places, 74 transitions, 166 flow [2023-11-29 05:43:28,157 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 75 places, 74 transitions, 166 flow [2023-11-29 05:43:28,158 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 05:43:28,160 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;@b3d317, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 05:43:28,160 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2023-11-29 05:43:28,162 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 05:43:28,162 INFO L124 PetriNetUnfolderBase]: 0/13 cut-off events. [2023-11-29 05:43:28,163 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-29 05:43:28,163 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:43:28,163 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:43:28,163 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-11-29 05:43:28,163 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:43:28,164 INFO L85 PathProgramCache]: Analyzing trace with hash 1613140187, now seen corresponding path program 1 times [2023-11-29 05:43:28,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:43:28,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71130776] [2023-11-29 05:43:28,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:43:28,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:43:28,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:43:28,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:43:28,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:43:28,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71130776] [2023-11-29 05:43:28,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71130776] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:43:28,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:43:28,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 05:43:28,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285164932] [2023-11-29 05:43:28,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:43:28,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:43:28,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:43:28,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:43:28,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:43:28,276 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 74 [2023-11-29 05:43:28,277 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 74 transitions, 166 flow. Second operand has 3 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) [2023-11-29 05:43:28,277 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:43:28,277 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 74 [2023-11-29 05:43:28,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:43:31,495 INFO L124 PetriNetUnfolderBase]: 19829/30368 cut-off events. [2023-11-29 05:43:31,495 INFO L125 PetriNetUnfolderBase]: For 1057/1057 co-relation queries the response was YES. [2023-11-29 05:43:31,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57430 conditions, 30368 events. 19829/30368 cut-off events. For 1057/1057 co-relation queries the response was YES. Maximal size of possible extension queue 1586. Compared 229994 event pairs, 6171 based on Foata normal form. 1714/26597 useless extension candidates. Maximal degree in co-relation 7747. Up to 20316 conditions per place. [2023-11-29 05:43:31,794 INFO L140 encePairwiseOnDemand]: 57/74 looper letters, 66 selfloop transitions, 4 changer transitions 0/101 dead transitions. [2023-11-29 05:43:31,794 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 101 transitions, 372 flow [2023-11-29 05:43:31,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:43:31,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 05:43:31,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 177 transitions. [2023-11-29 05:43:31,797 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7972972972972973 [2023-11-29 05:43:31,797 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 177 transitions. [2023-11-29 05:43:31,798 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 177 transitions. [2023-11-29 05:43:31,798 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:43:31,798 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 177 transitions. [2023-11-29 05:43:31,800 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 59.0) internal successors, (177), 3 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:43:31,801 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 74.0) internal successors, (296), 4 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:43:31,802 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 74.0) internal successors, (296), 4 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:43:31,802 INFO L175 Difference]: Start difference. First operand has 75 places, 74 transitions, 166 flow. Second operand 3 states and 177 transitions. [2023-11-29 05:43:31,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 101 transitions, 372 flow [2023-11-29 05:43:31,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 101 transitions, 368 flow, removed 2 selfloop flow, removed 0 redundant places. [2023-11-29 05:43:31,808 INFO L231 Difference]: Finished difference. Result has 77 places, 76 transitions, 210 flow [2023-11-29 05:43:31,809 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=210, PETRI_PLACES=77, PETRI_TRANSITIONS=76} [2023-11-29 05:43:31,810 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 2 predicate places. [2023-11-29 05:43:31,810 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 76 transitions, 210 flow [2023-11-29 05:43:31,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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) [2023-11-29 05:43:31,810 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:43:31,810 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1] [2023-11-29 05:43:31,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 05:43:31,811 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-11-29 05:43:31,811 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:43:31,811 INFO L85 PathProgramCache]: Analyzing trace with hash 600013190, now seen corresponding path program 1 times [2023-11-29 05:43:31,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:43:31,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962300357] [2023-11-29 05:43:31,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:43:31,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:43:31,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 05:43:31,838 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 05:43:31,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 05:43:31,857 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 05:43:31,857 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-29 05:43:31,857 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 25 remaining) [2023-11-29 05:43:31,857 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 25 remaining) [2023-11-29 05:43:31,858 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 25 remaining) [2023-11-29 05:43:31,858 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 25 remaining) [2023-11-29 05:43:31,858 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 25 remaining) [2023-11-29 05:43:31,858 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 25 remaining) [2023-11-29 05:43:31,859 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 25 remaining) [2023-11-29 05:43:31,859 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 25 remaining) [2023-11-29 05:43:31,859 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 25 remaining) [2023-11-29 05:43:31,859 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 25 remaining) [2023-11-29 05:43:31,859 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 25 remaining) [2023-11-29 05:43:31,860 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 25 remaining) [2023-11-29 05:43:31,860 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 25 remaining) [2023-11-29 05:43:31,860 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 25 remaining) [2023-11-29 05:43:31,861 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 25 remaining) [2023-11-29 05:43:31,861 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 25 remaining) [2023-11-29 05:43:31,861 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 25 remaining) [2023-11-29 05:43:31,861 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 25 remaining) [2023-11-29 05:43:31,861 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 25 remaining) [2023-11-29 05:43:31,862 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 25 remaining) [2023-11-29 05:43:31,862 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 25 remaining) [2023-11-29 05:43:31,862 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 25 remaining) [2023-11-29 05:43:31,862 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 25 remaining) [2023-11-29 05:43:31,863 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 25 remaining) [2023-11-29 05:43:31,863 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 25 remaining) [2023-11-29 05:43:31,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 05:43:31,863 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-29 05:43:31,864 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-29 05:43:31,864 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-11-29 05:43:31,905 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-29 05:43:31,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 98 places, 97 transitions, 222 flow [2023-11-29 05:43:31,925 INFO L124 PetriNetUnfolderBase]: 8/108 cut-off events. [2023-11-29 05:43:31,925 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-11-29 05:43:31,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127 conditions, 108 events. 8/108 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 358 event pairs, 0 based on Foata normal form. 0/71 useless extension candidates. Maximal degree in co-relation 94. Up to 5 conditions per place. [2023-11-29 05:43:31,926 INFO L82 GeneralOperation]: Start removeDead. Operand has 98 places, 97 transitions, 222 flow [2023-11-29 05:43:31,928 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 98 places, 97 transitions, 222 flow [2023-11-29 05:43:31,930 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 05:43:31,931 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;@b3d317, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 05:43:31,931 INFO L358 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2023-11-29 05:43:31,934 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 05:43:31,934 INFO L124 PetriNetUnfolderBase]: 0/13 cut-off events. [2023-11-29 05:43:31,934 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-29 05:43:31,934 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:43:31,934 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:43:31,935 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2023-11-29 05:43:31,935 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:43:31,935 INFO L85 PathProgramCache]: Analyzing trace with hash 396596722, now seen corresponding path program 1 times [2023-11-29 05:43:31,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:43:31,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850869054] [2023-11-29 05:43:31,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:43:31,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:43:31,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:43:31,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:43:31,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:43:31,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850869054] [2023-11-29 05:43:31,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850869054] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:43:31,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:43:31,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 05:43:31,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696817914] [2023-11-29 05:43:31,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:43:31,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:43:31,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:43:31,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:43:31,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:43:32,046 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 97 [2023-11-29 05:43:32,047 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 97 transitions, 222 flow. Second operand has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:43:32,047 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:43:32,047 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 97 [2023-11-29 05:43:32,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:44:08,829 INFO L124 PetriNetUnfolderBase]: 368689/491137 cut-off events. [2023-11-29 05:44:08,829 INFO L125 PetriNetUnfolderBase]: For 23130/23130 co-relation queries the response was YES. [2023-11-29 05:44:09,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 959014 conditions, 491137 events. 368689/491137 cut-off events. For 23130/23130 co-relation queries the response was YES. Maximal size of possible extension queue 20046. Compared 3806994 event pairs, 103585 based on Foata normal form. 18480/418530 useless extension candidates. Maximal degree in co-relation 57587. Up to 392830 conditions per place. [2023-11-29 05:44:11,935 INFO L140 encePairwiseOnDemand]: 75/97 looper letters, 87 selfloop transitions, 5 changer transitions 0/133 dead transitions. [2023-11-29 05:44:11,935 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 133 transitions, 499 flow [2023-11-29 05:44:11,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:44:11,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 05:44:11,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 233 transitions. [2023-11-29 05:44:11,937 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8006872852233677 [2023-11-29 05:44:11,938 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 233 transitions. [2023-11-29 05:44:11,938 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 233 transitions. [2023-11-29 05:44:11,938 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:44:11,938 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 233 transitions. [2023-11-29 05:44:11,939 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:44:11,940 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 97.0) internal successors, (388), 4 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:44:11,940 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 97.0) internal successors, (388), 4 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:44:11,941 INFO L175 Difference]: Start difference. First operand has 98 places, 97 transitions, 222 flow. Second operand 3 states and 233 transitions. [2023-11-29 05:44:11,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 133 transitions, 499 flow [2023-11-29 05:44:11,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 133 transitions, 487 flow, removed 6 selfloop flow, removed 0 redundant places. [2023-11-29 05:44:11,974 INFO L231 Difference]: Finished difference. Result has 100 places, 100 transitions, 277 flow [2023-11-29 05:44:11,975 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=277, PETRI_PLACES=100, PETRI_TRANSITIONS=100} [2023-11-29 05:44:11,976 INFO L281 CegarLoopForPetriNet]: 98 programPoint places, 2 predicate places. [2023-11-29 05:44:11,976 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 100 transitions, 277 flow [2023-11-29 05:44:11,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:44:11,976 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:44:11,977 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:44:11,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 05:44:11,977 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thrErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2023-11-29 05:44:11,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:44:11,977 INFO L85 PathProgramCache]: Analyzing trace with hash -1038868511, now seen corresponding path program 1 times [2023-11-29 05:44:11,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:44:11,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952941618] [2023-11-29 05:44:11,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:44:11,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:44:11,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:44:12,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:44:12,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:44:12,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952941618] [2023-11-29 05:44:12,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952941618] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:44:12,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:44:12,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:44:12,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131598087] [2023-11-29 05:44:12,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:44:12,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:44:12,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:44:12,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:44:12,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:44:12,062 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 97 [2023-11-29 05:44:12,063 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 100 transitions, 277 flow. Second operand has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:44:12,063 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:44:12,063 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 97 [2023-11-29 05:44:12,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:44:45,176 INFO L124 PetriNetUnfolderBase]: 262339/408041 cut-off events. [2023-11-29 05:44:45,176 INFO L125 PetriNetUnfolderBase]: For 38591/61941 co-relation queries the response was YES. [2023-11-29 05:44:46,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 797625 conditions, 408041 events. 262339/408041 cut-off events. For 38591/61941 co-relation queries the response was YES. Maximal size of possible extension queue 15956. Compared 4184162 event pairs, 126204 based on Foata normal form. 0/324312 useless extension candidates. Maximal degree in co-relation 340587. Up to 198335 conditions per place. [2023-11-29 05:44:47,947 INFO L140 encePairwiseOnDemand]: 94/97 looper letters, 77 selfloop transitions, 2 changer transitions 0/134 dead transitions. [2023-11-29 05:44:47,947 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 134 transitions, 533 flow [2023-11-29 05:44:47,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:44:47,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 05:44:47,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 238 transitions. [2023-11-29 05:44:47,949 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8178694158075601 [2023-11-29 05:44:47,949 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 238 transitions. [2023-11-29 05:44:47,949 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 238 transitions. [2023-11-29 05:44:47,949 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:44:47,949 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 238 transitions. [2023-11-29 05:44:47,950 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:44:47,951 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 97.0) internal successors, (388), 4 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:44:47,952 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 97.0) internal successors, (388), 4 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:44:47,952 INFO L175 Difference]: Start difference. First operand has 100 places, 100 transitions, 277 flow. Second operand 3 states and 238 transitions. [2023-11-29 05:44:47,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 134 transitions, 533 flow [2023-11-29 05:44:47,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 134 transitions, 525 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 05:44:48,000 INFO L231 Difference]: Finished difference. Result has 102 places, 100 transitions, 280 flow [2023-11-29 05:44:48,000 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=272, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=280, PETRI_PLACES=102, PETRI_TRANSITIONS=100} [2023-11-29 05:44:48,001 INFO L281 CegarLoopForPetriNet]: 98 programPoint places, 4 predicate places. [2023-11-29 05:44:48,001 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 100 transitions, 280 flow [2023-11-29 05:44:48,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:44:48,001 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:44:48,001 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1] [2023-11-29 05:44:48,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 05:44:48,002 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2023-11-29 05:44:48,002 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:44:48,002 INFO L85 PathProgramCache]: Analyzing trace with hash 137098925, now seen corresponding path program 1 times [2023-11-29 05:44:48,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:44:48,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528962193] [2023-11-29 05:44:48,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:44:48,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:44:48,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 05:44:48,018 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 05:44:48,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 05:44:48,029 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 05:44:48,029 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-29 05:44:48,029 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (30 of 31 remaining) [2023-11-29 05:44:48,029 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 31 remaining) [2023-11-29 05:44:48,029 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 31 remaining) [2023-11-29 05:44:48,030 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 31 remaining) [2023-11-29 05:44:48,030 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 31 remaining) [2023-11-29 05:44:48,030 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 31 remaining) [2023-11-29 05:44:48,030 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 31 remaining) [2023-11-29 05:44:48,030 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 31 remaining) [2023-11-29 05:44:48,030 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 31 remaining) [2023-11-29 05:44:48,030 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 31 remaining) [2023-11-29 05:44:48,030 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 31 remaining) [2023-11-29 05:44:48,030 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 31 remaining) [2023-11-29 05:44:48,031 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 31 remaining) [2023-11-29 05:44:48,031 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 31 remaining) [2023-11-29 05:44:48,031 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 31 remaining) [2023-11-29 05:44:48,031 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 31 remaining) [2023-11-29 05:44:48,031 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 31 remaining) [2023-11-29 05:44:48,031 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 31 remaining) [2023-11-29 05:44:48,031 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 31 remaining) [2023-11-29 05:44:48,031 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 31 remaining) [2023-11-29 05:44:48,032 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 31 remaining) [2023-11-29 05:44:48,032 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 31 remaining) [2023-11-29 05:44:48,032 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 31 remaining) [2023-11-29 05:44:48,032 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 31 remaining) [2023-11-29 05:44:48,032 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 31 remaining) [2023-11-29 05:44:48,032 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 31 remaining) [2023-11-29 05:44:48,032 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 31 remaining) [2023-11-29 05:44:48,032 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 31 remaining) [2023-11-29 05:44:48,032 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 31 remaining) [2023-11-29 05:44:48,033 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 31 remaining) [2023-11-29 05:44:48,033 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 31 remaining) [2023-11-29 05:44:48,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 05:44:48,033 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-11-29 05:44:48,034 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-29 05:44:48,034 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-11-29 05:44:48,066 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-29 05:44:48,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 121 places, 120 transitions, 280 flow [2023-11-29 05:44:48,078 INFO L124 PetriNetUnfolderBase]: 10/134 cut-off events. [2023-11-29 05:44:48,079 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2023-11-29 05:44:48,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 160 conditions, 134 events. 10/134 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 488 event pairs, 0 based on Foata normal form. 0/88 useless extension candidates. Maximal degree in co-relation 126. Up to 6 conditions per place. [2023-11-29 05:44:48,079 INFO L82 GeneralOperation]: Start removeDead. Operand has 121 places, 120 transitions, 280 flow [2023-11-29 05:44:48,081 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 121 places, 120 transitions, 280 flow [2023-11-29 05:44:48,082 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 05:44:48,082 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;@b3d317, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 05:44:48,082 INFO L358 AbstractCegarLoop]: Starting to check reachability of 37 error locations. [2023-11-29 05:44:48,084 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 05:44:48,084 INFO L124 PetriNetUnfolderBase]: 0/13 cut-off events. [2023-11-29 05:44:48,084 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-29 05:44:48,084 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:44:48,084 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:44:48,085 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-11-29 05:44:48,085 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:44:48,085 INFO L85 PathProgramCache]: Analyzing trace with hash -1200424576, now seen corresponding path program 1 times [2023-11-29 05:44:48,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:44:48,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635576364] [2023-11-29 05:44:48,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:44:48,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:44:48,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:44:48,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:44:48,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:44:48,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635576364] [2023-11-29 05:44:48,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635576364] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:44:48,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:44:48,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 05:44:48,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183963056] [2023-11-29 05:44:48,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:44:48,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:44:48,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:44:48,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:44:48,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:44:48,170 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 120 [2023-11-29 05:44:48,170 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 120 transitions, 280 flow. Second operand has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:44:48,171 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:44:48,171 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 120 [2023-11-29 05:44:48,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand