./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-more-buffer-mult2.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fae1e73c-79df-4575-a31b-13c0d43b26b0/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fae1e73c-79df-4575-a31b-13c0d43b26b0/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fae1e73c-79df-4575-a31b-13c0d43b26b0/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fae1e73c-79df-4575-a31b-13c0d43b26b0/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-buffer-mult2.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fae1e73c-79df-4575-a31b-13c0d43b26b0/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fae1e73c-79df-4575-a31b-13c0d43b26b0/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --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 df820220e47314ad1ae7e5e69c959ff16aa366a463fd9290864972c0f85d142a --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:21:03,922 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:21:03,994 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fae1e73c-79df-4575-a31b-13c0d43b26b0/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-06 22:21:04,012 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:21:04,012 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:21:04,053 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:21:04,054 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:21:04,055 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:21:04,056 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:21:04,061 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:21:04,062 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:21:04,063 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:21:04,063 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:21:04,065 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:21:04,066 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:21:04,066 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:21:04,066 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:21:04,067 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:21:04,067 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:21:04,068 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:21:04,068 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:21:04,069 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:21:04,069 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-06 22:21:04,070 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:21:04,070 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:21:04,071 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:21:04,071 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:21:04,072 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:21:04,072 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:21:04,073 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:21:04,073 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:21:04,074 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:21:04,074 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:21:04,074 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:21:04,075 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:21:04,075 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:21:04,075 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:21:04,076 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:21:04,076 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:21:04,076 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:21:04,076 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:21:04,077 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_fae1e73c-79df-4575-a31b-13c0d43b26b0/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fae1e73c-79df-4575-a31b-13c0d43b26b0/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> df820220e47314ad1ae7e5e69c959ff16aa366a463fd9290864972c0f85d142a [2023-11-06 22:21:04,392 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:21:04,423 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:21:04,426 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:21:04,427 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:21:04,428 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:21:04,429 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fae1e73c-79df-4575-a31b-13c0d43b26b0/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/weaver/popl20-more-buffer-mult2.wvr.c [2023-11-06 22:21:07,570 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:21:07,836 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:21:07,837 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fae1e73c-79df-4575-a31b-13c0d43b26b0/sv-benchmarks/c/weaver/popl20-more-buffer-mult2.wvr.c [2023-11-06 22:21:07,850 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fae1e73c-79df-4575-a31b-13c0d43b26b0/bin/uautomizer-verify-WvqO1wxjHP/data/32ae3e064/c2cf21ef353242dbb9e91656f67c008c/FLAG7970c819a [2023-11-06 22:21:07,865 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fae1e73c-79df-4575-a31b-13c0d43b26b0/bin/uautomizer-verify-WvqO1wxjHP/data/32ae3e064/c2cf21ef353242dbb9e91656f67c008c [2023-11-06 22:21:07,868 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:21:07,870 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:21:07,871 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:21:07,871 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:21:07,877 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:21:07,878 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:21:07" (1/1) ... [2023-11-06 22:21:07,879 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a0c059e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:21:07, skipping insertion in model container [2023-11-06 22:21:07,879 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:21:07" (1/1) ... [2023-11-06 22:21:07,907 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:21:08,155 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:21:08,165 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:21:08,205 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:21:08,214 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:21:08,215 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:21:08,223 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:21:08,223 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:21:08 WrapperNode [2023-11-06 22:21:08,224 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:21:08,225 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:21:08,225 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:21:08,225 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:21:08,233 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:21:08" (1/1) ... [2023-11-06 22:21:08,244 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:21:08" (1/1) ... [2023-11-06 22:21:08,284 INFO L138 Inliner]: procedures = 27, calls = 77, calls flagged for inlining = 19, calls inlined = 23, statements flattened = 360 [2023-11-06 22:21:08,284 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:21:08,285 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:21:08,285 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:21:08,286 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:21:08,295 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:21:08" (1/1) ... [2023-11-06 22:21:08,295 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:21:08" (1/1) ... [2023-11-06 22:21:08,301 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:21:08" (1/1) ... [2023-11-06 22:21:08,301 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:21:08" (1/1) ... [2023-11-06 22:21:08,312 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:21:08" (1/1) ... [2023-11-06 22:21:08,318 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:21:08" (1/1) ... [2023-11-06 22:21:08,321 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:21:08" (1/1) ... [2023-11-06 22:21:08,323 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:21:08" (1/1) ... [2023-11-06 22:21:08,329 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:21:08,330 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:21:08,330 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:21:08,330 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:21:08,331 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:21:08" (1/1) ... [2023-11-06 22:21:08,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:21:08,360 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fae1e73c-79df-4575-a31b-13c0d43b26b0/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:21:08,374 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fae1e73c-79df-4575-a31b-13c0d43b26b0/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:21:08,377 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fae1e73c-79df-4575-a31b-13c0d43b26b0/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:21:08,409 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:21:08,409 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:21:08,410 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:21:08,410 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 22:21:08,410 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-06 22:21:08,410 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-06 22:21:08,410 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-06 22:21:08,410 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-06 22:21:08,411 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-06 22:21:08,411 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-06 22:21:08,411 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-11-06 22:21:08,411 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-11-06 22:21:08,411 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:21:08,411 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-06 22:21:08,412 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-06 22:21:08,412 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-06 22:21:08,412 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:21:08,412 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:21:08,412 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:21:08,414 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-06 22:21:08,545 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:21:08,547 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:21:09,122 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:21:09,678 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:21:09,678 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-11-06 22:21:09,681 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:21:09 BoogieIcfgContainer [2023-11-06 22:21:09,682 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:21:09,684 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:21:09,684 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:21:09,687 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:21:09,688 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:21:07" (1/3) ... [2023-11-06 22:21:09,689 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16a3f036 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:21:09, skipping insertion in model container [2023-11-06 22:21:09,689 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:21:08" (2/3) ... [2023-11-06 22:21:09,689 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16a3f036 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:21:09, skipping insertion in model container [2023-11-06 22:21:09,690 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:21:09" (3/3) ... [2023-11-06 22:21:09,691 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-buffer-mult2.wvr.c [2023-11-06 22:21:09,701 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 22:21:09,712 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:21:09,712 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2023-11-06 22:21:09,713 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 22:21:09,944 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-06 22:21:10,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 266 places, 271 transitions, 570 flow [2023-11-06 22:21:10,112 INFO L124 PetriNetUnfolderBase]: 18/267 cut-off events. [2023-11-06 22:21:10,113 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-06 22:21:10,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 284 conditions, 267 events. 18/267 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 304 event pairs, 0 based on Foata normal form. 0/219 useless extension candidates. Maximal degree in co-relation 218. Up to 2 conditions per place. [2023-11-06 22:21:10,120 INFO L82 GeneralOperation]: Start removeDead. Operand has 266 places, 271 transitions, 570 flow [2023-11-06 22:21:10,128 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 237 places, 241 transitions, 503 flow [2023-11-06 22:21:10,133 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:21:10,155 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 237 places, 241 transitions, 503 flow [2023-11-06 22:21:10,159 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 237 places, 241 transitions, 503 flow [2023-11-06 22:21:10,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 237 places, 241 transitions, 503 flow [2023-11-06 22:21:10,246 INFO L124 PetriNetUnfolderBase]: 17/241 cut-off events. [2023-11-06 22:21:10,246 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-06 22:21:10,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 257 conditions, 241 events. 17/241 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 295 event pairs, 0 based on Foata normal form. 0/194 useless extension candidates. Maximal degree in co-relation 218. Up to 2 conditions per place. [2023-11-06 22:21:10,252 INFO L119 LiptonReduction]: Number of co-enabled transitions 4384 [2023-11-06 22:21:29,069 INFO L134 LiptonReduction]: Checked pairs total: 7298 [2023-11-06 22:21:29,069 INFO L136 LiptonReduction]: Total number of compositions: 246 [2023-11-06 22:21:29,085 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:21:29,092 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=LoopsAndPotentialCycles, 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;@270a5963, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:21:29,092 INFO L358 AbstractCegarLoop]: Starting to check reachability of 60 error locations. [2023-11-06 22:21:29,095 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:21:29,096 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-11-06 22:21:29,096 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:21:29,096 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:21:29,097 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-06 22:21:29,097 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-06 22:21:29,102 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:21:29,103 INFO L85 PathProgramCache]: Analyzing trace with hash 46138, now seen corresponding path program 1 times [2023-11-06 22:21:29,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:21:29,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735668441] [2023-11-06 22:21:29,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:21:29,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:21:29,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:21:29,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:21:29,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:21:29,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735668441] [2023-11-06 22:21:29,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735668441] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:21:29,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:21:29,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:21:29,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568972348] [2023-11-06 22:21:29,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:21:29,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:21:29,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:21:29,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:21:29,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:21:29,551 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 517 [2023-11-06 22:21:29,556 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 63 transitions, 147 flow. Second operand has 3 states, 3 states have (on average 210.66666666666666) internal successors, (632), 3 states have internal predecessors, (632), 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) [2023-11-06 22:21:29,556 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:21:29,556 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 517 [2023-11-06 22:21:29,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:21:37,260 INFO L124 PetriNetUnfolderBase]: 36532/45161 cut-off events. [2023-11-06 22:21:37,261 INFO L125 PetriNetUnfolderBase]: For 591/591 co-relation queries the response was YES. [2023-11-06 22:21:37,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90920 conditions, 45161 events. 36532/45161 cut-off events. For 591/591 co-relation queries the response was YES. Maximal size of possible extension queue 4082. Compared 238504 event pairs, 23250 based on Foata normal form. 0/11864 useless extension candidates. Maximal degree in co-relation 80316. Up to 44285 conditions per place. [2023-11-06 22:21:37,789 INFO L140 encePairwiseOnDemand]: 500/517 looper letters, 48 selfloop transitions, 7 changer transitions 0/61 dead transitions. [2023-11-06 22:21:37,789 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 61 transitions, 253 flow [2023-11-06 22:21:37,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:21:37,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:21:37,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 695 transitions. [2023-11-06 22:21:37,815 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4480980012894907 [2023-11-06 22:21:37,816 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 695 transitions. [2023-11-06 22:21:37,817 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 695 transitions. [2023-11-06 22:21:37,821 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:21:37,824 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 695 transitions. [2023-11-06 22:21:37,832 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 231.66666666666666) internal successors, (695), 3 states have internal predecessors, (695), 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) [2023-11-06 22:21:37,842 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 517.0) internal successors, (2068), 4 states have internal predecessors, (2068), 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) [2023-11-06 22:21:37,844 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 517.0) internal successors, (2068), 4 states have internal predecessors, (2068), 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) [2023-11-06 22:21:37,846 INFO L175 Difference]: Start difference. First operand has 70 places, 63 transitions, 147 flow. Second operand 3 states and 695 transitions. [2023-11-06 22:21:37,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 61 transitions, 253 flow [2023-11-06 22:21:37,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 61 transitions, 240 flow, removed 0 selfloop flow, removed 7 redundant places. [2023-11-06 22:21:37,978 INFO L231 Difference]: Finished difference. Result has 59 places, 61 transitions, 174 flow [2023-11-06 22:21:37,980 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=517, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=174, PETRI_PLACES=59, PETRI_TRANSITIONS=61} [2023-11-06 22:21:37,985 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -11 predicate places. [2023-11-06 22:21:37,986 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 61 transitions, 174 flow [2023-11-06 22:21:37,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 210.66666666666666) internal successors, (632), 3 states have internal predecessors, (632), 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) [2023-11-06 22:21:37,987 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:21:37,988 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-06 22:21:37,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:21:37,988 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-06 22:21:37,990 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:21:37,990 INFO L85 PathProgramCache]: Analyzing trace with hash 46137, now seen corresponding path program 1 times [2023-11-06 22:21:37,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:21:37,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922008462] [2023-11-06 22:21:37,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:21:37,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:21:38,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:21:38,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:21:38,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:21:38,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922008462] [2023-11-06 22:21:38,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922008462] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:21:38,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:21:38,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:21:38,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21385296] [2023-11-06 22:21:38,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:21:38,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:21:38,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:21:38,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:21:38,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:21:38,336 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 517 [2023-11-06 22:21:38,338 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 61 transitions, 174 flow. Second operand has 3 states, 3 states have (on average 210.66666666666666) internal successors, (632), 3 states have internal predecessors, (632), 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) [2023-11-06 22:21:38,338 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:21:38,338 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 517 [2023-11-06 22:21:38,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:21:43,671 INFO L124 PetriNetUnfolderBase]: 36530/45159 cut-off events. [2023-11-06 22:21:43,671 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:21:43,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90295 conditions, 45159 events. 36530/45159 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4082. Compared 238592 event pairs, 23250 based on Foata normal form. 1/11868 useless extension candidates. Maximal degree in co-relation 90245. Up to 44287 conditions per place. [2023-11-06 22:21:44,021 INFO L140 encePairwiseOnDemand]: 510/517 looper letters, 48 selfloop transitions, 5 changer transitions 0/59 dead transitions. [2023-11-06 22:21:44,021 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 59 transitions, 272 flow [2023-11-06 22:21:44,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:21:44,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:21:44,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 685 transitions. [2023-11-06 22:21:44,026 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44165054803352677 [2023-11-06 22:21:44,029 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 685 transitions. [2023-11-06 22:21:44,030 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 685 transitions. [2023-11-06 22:21:44,030 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:21:44,031 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 685 transitions. [2023-11-06 22:21:44,033 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 228.33333333333334) internal successors, (685), 3 states have internal predecessors, (685), 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) [2023-11-06 22:21:44,037 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 517.0) internal successors, (2068), 4 states have internal predecessors, (2068), 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) [2023-11-06 22:21:44,041 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 517.0) internal successors, (2068), 4 states have internal predecessors, (2068), 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) [2023-11-06 22:21:44,041 INFO L175 Difference]: Start difference. First operand has 59 places, 61 transitions, 174 flow. Second operand 3 states and 685 transitions. [2023-11-06 22:21:44,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 59 transitions, 272 flow [2023-11-06 22:21:44,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 59 transitions, 258 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:21:44,051 INFO L231 Difference]: Finished difference. Result has 59 places, 59 transitions, 162 flow [2023-11-06 22:21:44,051 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=517, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=162, PETRI_PLACES=59, PETRI_TRANSITIONS=59} [2023-11-06 22:21:44,053 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -11 predicate places. [2023-11-06 22:21:44,053 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 59 transitions, 162 flow [2023-11-06 22:21:44,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 210.66666666666666) internal successors, (632), 3 states have internal predecessors, (632), 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) [2023-11-06 22:21:44,054 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:21:44,054 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-06 22:21:44,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 22:21:44,054 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-06 22:21:44,057 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:21:44,058 INFO L85 PathProgramCache]: Analyzing trace with hash 1432458, now seen corresponding path program 1 times [2023-11-06 22:21:44,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:21:44,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064378575] [2023-11-06 22:21:44,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:21:44,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:21:44,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:21:44,192 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:21:44,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:21:44,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064378575] [2023-11-06 22:21:44,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064378575] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:21:44,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1268239914] [2023-11-06 22:21:44,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:21:44,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:21:44,196 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fae1e73c-79df-4575-a31b-13c0d43b26b0/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:21:44,201 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fae1e73c-79df-4575-a31b-13c0d43b26b0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:21:44,239 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fae1e73c-79df-4575-a31b-13c0d43b26b0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 22:21:44,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:21:44,367 INFO L262 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:21:44,372 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:21:44,406 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:21:44,406 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:21:44,429 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:21:44,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1268239914] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:21:44,434 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:21:44,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2023-11-06 22:21:44,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905075078] [2023-11-06 22:21:44,435 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:21:44,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:21:44,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:21:44,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:21:44,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:21:44,504 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 517 [2023-11-06 22:21:44,507 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 59 transitions, 162 flow. Second operand has 6 states, 6 states have (on average 211.0) internal successors, (1266), 6 states have internal predecessors, (1266), 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) [2023-11-06 22:21:44,507 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:21:44,507 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 517 [2023-11-06 22:21:44,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:21:50,169 INFO L124 PetriNetUnfolderBase]: 36542/45177 cut-off events. [2023-11-06 22:21:50,170 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:21:50,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90350 conditions, 45177 events. 36542/45177 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4082. Compared 238287 event pairs, 23250 based on Foata normal form. 0/11875 useless extension candidates. Maximal degree in co-relation 90245. Up to 44288 conditions per place. [2023-11-06 22:21:50,638 INFO L140 encePairwiseOnDemand]: 508/517 looper letters, 46 selfloop transitions, 25 changer transitions 0/77 dead transitions. [2023-11-06 22:21:50,639 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 77 transitions, 382 flow [2023-11-06 22:21:50,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:21:50,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:21:50,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1337 transitions. [2023-11-06 22:21:50,645 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4310122501611863 [2023-11-06 22:21:50,645 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1337 transitions. [2023-11-06 22:21:50,645 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1337 transitions. [2023-11-06 22:21:50,646 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:21:50,646 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1337 transitions. [2023-11-06 22:21:50,651 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 222.83333333333334) internal successors, (1337), 6 states have internal predecessors, (1337), 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) [2023-11-06 22:21:50,659 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 517.0) internal successors, (3619), 7 states have internal predecessors, (3619), 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) [2023-11-06 22:21:50,662 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 517.0) internal successors, (3619), 7 states have internal predecessors, (3619), 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) [2023-11-06 22:21:50,662 INFO L175 Difference]: Start difference. First operand has 59 places, 59 transitions, 162 flow. Second operand 6 states and 1337 transitions. [2023-11-06 22:21:50,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 77 transitions, 382 flow [2023-11-06 22:21:50,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 77 transitions, 374 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:21:50,668 INFO L231 Difference]: Finished difference. Result has 66 places, 77 transitions, 324 flow [2023-11-06 22:21:50,668 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=517, PETRI_DIFFERENCE_MINUEND_FLOW=157, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=324, PETRI_PLACES=66, PETRI_TRANSITIONS=77} [2023-11-06 22:21:50,671 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -4 predicate places. [2023-11-06 22:21:50,672 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 77 transitions, 324 flow [2023-11-06 22:21:50,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 211.0) internal successors, (1266), 6 states have internal predecessors, (1266), 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) [2023-11-06 22:21:50,673 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:21:50,673 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1] [2023-11-06 22:21:50,690 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fae1e73c-79df-4575-a31b-13c0d43b26b0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 22:21:50,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fae1e73c-79df-4575-a31b-13c0d43b26b0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:21:50,891 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-06 22:21:50,892 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:21:50,892 INFO L85 PathProgramCache]: Analyzing trace with hash 44408377, now seen corresponding path program 1 times [2023-11-06 22:21:50,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:21:50,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126340722] [2023-11-06 22:21:50,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:21:50,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:21:50,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:21:50,977 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:21:50,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:21:50,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126340722] [2023-11-06 22:21:50,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126340722] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:21:50,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:21:50,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:21:50,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851006743] [2023-11-06 22:21:50,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:21:50,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:21:50,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:21:50,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:21:50,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:21:51,009 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 517 [2023-11-06 22:21:51,011 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 77 transitions, 324 flow. Second operand has 3 states, 3 states have (on average 211.33333333333334) internal successors, (634), 3 states have internal predecessors, (634), 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) [2023-11-06 22:21:51,011 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:21:51,011 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 517 [2023-11-06 22:21:51,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:21:56,308 INFO L124 PetriNetUnfolderBase]: 36536/45169 cut-off events. [2023-11-06 22:21:56,309 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-06 22:21:56,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90364 conditions, 45169 events. 36536/45169 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 4082. Compared 238332 event pairs, 23250 based on Foata normal form. 0/11878 useless extension candidates. Maximal degree in co-relation 90297. Up to 44282 conditions per place. [2023-11-06 22:21:56,639 INFO L140 encePairwiseOnDemand]: 513/517 looper letters, 57 selfloop transitions, 6 changer transitions 0/69 dead transitions. [2023-11-06 22:21:56,639 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 69 transitions, 396 flow [2023-11-06 22:21:56,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:21:56,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:21:56,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 679 transitions. [2023-11-06 22:21:56,643 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4377820760799484 [2023-11-06 22:21:56,644 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 679 transitions. [2023-11-06 22:21:56,644 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 679 transitions. [2023-11-06 22:21:56,645 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:21:56,645 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 679 transitions. [2023-11-06 22:21:56,648 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 226.33333333333334) internal successors, (679), 3 states have internal predecessors, (679), 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) [2023-11-06 22:21:56,653 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 517.0) internal successors, (2068), 4 states have internal predecessors, (2068), 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) [2023-11-06 22:21:56,655 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 517.0) internal successors, (2068), 4 states have internal predecessors, (2068), 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) [2023-11-06 22:21:56,656 INFO L175 Difference]: Start difference. First operand has 66 places, 77 transitions, 324 flow. Second operand 3 states and 679 transitions. [2023-11-06 22:21:56,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 69 transitions, 396 flow [2023-11-06 22:21:56,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 69 transitions, 362 flow, removed 9 selfloop flow, removed 2 redundant places. [2023-11-06 22:21:56,660 INFO L231 Difference]: Finished difference. Result has 64 places, 69 transitions, 248 flow [2023-11-06 22:21:56,661 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=517, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=248, PETRI_PLACES=64, PETRI_TRANSITIONS=69} [2023-11-06 22:21:56,662 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -6 predicate places. [2023-11-06 22:21:56,662 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 69 transitions, 248 flow [2023-11-06 22:21:56,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 211.33333333333334) internal successors, (634), 3 states have internal predecessors, (634), 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) [2023-11-06 22:21:56,663 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:21:56,663 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-06 22:21:56,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 22:21:56,664 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-06 22:21:56,664 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:21:56,664 INFO L85 PathProgramCache]: Analyzing trace with hash -263830138, now seen corresponding path program 1 times [2023-11-06 22:21:56,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:21:56,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502820477] [2023-11-06 22:21:56,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:21:56,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:21:56,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:21:56,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:21:56,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:21:56,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502820477] [2023-11-06 22:21:56,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502820477] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:21:56,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:21:56,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:21:56,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294744734] [2023-11-06 22:21:56,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:21:56,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:21:56,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:21:56,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:21:56,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:21:56,802 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 517 [2023-11-06 22:21:56,803 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 69 transitions, 248 flow. Second operand has 3 states, 3 states have (on average 220.66666666666666) internal successors, (662), 3 states have internal predecessors, (662), 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) [2023-11-06 22:21:56,803 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:21:56,804 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 517 [2023-11-06 22:21:56,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:22:03,661 INFO L124 PetriNetUnfolderBase]: 44695/56621 cut-off events. [2023-11-06 22:22:03,661 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-06 22:22:03,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113964 conditions, 56621 events. 44695/56621 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 5210. Compared 339263 event pairs, 12508 based on Foata normal form. 0/15803 useless extension candidates. Maximal degree in co-relation 113903. Up to 35040 conditions per place. [2023-11-06 22:22:04,020 INFO L140 encePairwiseOnDemand]: 513/517 looper letters, 98 selfloop transitions, 2 changer transitions 0/106 dead transitions. [2023-11-06 22:22:04,020 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 106 transitions, 529 flow [2023-11-06 22:22:04,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:22:04,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:22:04,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 743 transitions. [2023-11-06 22:22:04,024 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47904577691811734 [2023-11-06 22:22:04,024 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 743 transitions. [2023-11-06 22:22:04,024 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 743 transitions. [2023-11-06 22:22:04,025 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:22:04,026 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 743 transitions. [2023-11-06 22:22:04,028 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 247.66666666666666) internal successors, (743), 3 states have internal predecessors, (743), 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) [2023-11-06 22:22:04,033 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 517.0) internal successors, (2068), 4 states have internal predecessors, (2068), 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) [2023-11-06 22:22:04,035 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 517.0) internal successors, (2068), 4 states have internal predecessors, (2068), 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) [2023-11-06 22:22:04,035 INFO L175 Difference]: Start difference. First operand has 64 places, 69 transitions, 248 flow. Second operand 3 states and 743 transitions. [2023-11-06 22:22:04,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 106 transitions, 529 flow [2023-11-06 22:22:04,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 106 transitions, 517 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:22:04,039 INFO L231 Difference]: Finished difference. Result has 65 places, 70 transitions, 250 flow [2023-11-06 22:22:04,040 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=517, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=250, PETRI_PLACES=65, PETRI_TRANSITIONS=70} [2023-11-06 22:22:04,041 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -5 predicate places. [2023-11-06 22:22:04,041 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 70 transitions, 250 flow [2023-11-06 22:22:04,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 220.66666666666666) internal successors, (662), 3 states have internal predecessors, (662), 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) [2023-11-06 22:22:04,042 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:22:04,042 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-06 22:22:04,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 22:22:04,042 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-06 22:22:04,043 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:22:04,043 INFO L85 PathProgramCache]: Analyzing trace with hash -263830139, now seen corresponding path program 1 times [2023-11-06 22:22:04,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:22:04,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340450664] [2023-11-06 22:22:04,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:22:04,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:22:04,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:22:04,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:22:04,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:22:04,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340450664] [2023-11-06 22:22:04,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340450664] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:22:04,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:22:04,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:22:04,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828881110] [2023-11-06 22:22:04,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:22:04,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:22:04,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:22:04,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:22:04,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:22:04,258 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 206 out of 517 [2023-11-06 22:22:04,260 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 70 transitions, 250 flow. Second operand has 4 states, 4 states have (on average 207.25) internal successors, (829), 4 states have internal predecessors, (829), 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) [2023-11-06 22:22:04,260 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:22:04,261 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 206 of 517 [2023-11-06 22:22:04,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand