./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-more-buffer-series.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e7bb482b 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_962c754a-719b-4ae8-82dc-69a5759d4018/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_962c754a-719b-4ae8-82dc-69a5759d4018/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_962c754a-719b-4ae8-82dc-69a5759d4018/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_962c754a-719b-4ae8-82dc-69a5759d4018/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-buffer-series.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_962c754a-719b-4ae8-82dc-69a5759d4018/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_962c754a-719b-4ae8-82dc-69a5759d4018/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 675e4a71573eb5ca191c78078c954ea41743d39a46f0fa586376ee48e7dc4190 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 21:14:50,778 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 21:14:50,940 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_962c754a-719b-4ae8-82dc-69a5759d4018/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-06 21:14:50,951 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 21:14:50,952 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 21:14:50,999 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 21:14:51,001 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 21:14:51,002 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 21:14:51,003 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 21:14:51,010 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 21:14:51,012 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 21:14:51,012 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 21:14:51,013 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 21:14:51,015 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 21:14:51,016 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 21:14:51,017 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 21:14:51,017 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 21:14:51,018 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 21:14:51,019 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 21:14:51,019 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 21:14:51,020 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 21:14:51,021 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 21:14:51,022 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-06 21:14:51,022 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 21:14:51,023 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 21:14:51,023 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 21:14:51,024 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 21:14:51,025 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 21:14:51,026 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 21:14:51,027 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 21:14:51,028 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:14:51,029 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 21:14:51,029 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 21:14:51,030 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 21:14:51,030 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 21:14:51,031 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 21:14:51,031 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 21:14:51,031 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 21:14:51,032 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 21:14:51,032 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 21:14:51,032 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 21:14:51,033 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_962c754a-719b-4ae8-82dc-69a5759d4018/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_962c754a-719b-4ae8-82dc-69a5759d4018/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 675e4a71573eb5ca191c78078c954ea41743d39a46f0fa586376ee48e7dc4190 [2023-11-06 21:14:51,372 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 21:14:51,415 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 21:14:51,418 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 21:14:51,420 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 21:14:51,420 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 21:14:51,422 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_962c754a-719b-4ae8-82dc-69a5759d4018/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/weaver/popl20-more-buffer-series.wvr.c [2023-11-06 21:14:54,777 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 21:14:54,995 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 21:14:54,996 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_962c754a-719b-4ae8-82dc-69a5759d4018/sv-benchmarks/c/weaver/popl20-more-buffer-series.wvr.c [2023-11-06 21:14:55,006 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_962c754a-719b-4ae8-82dc-69a5759d4018/bin/uautomizer-verify-WvqO1wxjHP/data/f53818b90/3a0f75bf1c9146f087d1a198637809e3/FLAG683f32890 [2023-11-06 21:14:55,023 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_962c754a-719b-4ae8-82dc-69a5759d4018/bin/uautomizer-verify-WvqO1wxjHP/data/f53818b90/3a0f75bf1c9146f087d1a198637809e3 [2023-11-06 21:14:55,026 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 21:14:55,028 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 21:14:55,029 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 21:14:55,029 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 21:14:55,036 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 21:14:55,037 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:14:55" (1/1) ... [2023-11-06 21:14:55,038 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@456c9a0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:55, skipping insertion in model container [2023-11-06 21:14:55,039 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:14:55" (1/1) ... [2023-11-06 21:14:55,072 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 21:14:55,307 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:14:55,319 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 21:14:55,360 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:14:55,371 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 21:14:55,371 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 21:14:55,379 INFO L206 MainTranslator]: Completed translation [2023-11-06 21:14:55,380 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:55 WrapperNode [2023-11-06 21:14:55,380 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 21:14:55,381 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 21:14:55,381 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 21:14:55,382 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 21:14:55,390 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:55" (1/1) ... [2023-11-06 21:14:55,402 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:55" (1/1) ... [2023-11-06 21:14:55,445 INFO L138 Inliner]: procedures = 27, calls = 88, calls flagged for inlining = 23, calls inlined = 29, statements flattened = 410 [2023-11-06 21:14:55,445 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 21:14:55,446 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 21:14:55,446 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 21:14:55,447 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 21:14:55,457 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:55" (1/1) ... [2023-11-06 21:14:55,458 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:55" (1/1) ... [2023-11-06 21:14:55,465 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:55" (1/1) ... [2023-11-06 21:14:55,466 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:55" (1/1) ... [2023-11-06 21:14:55,482 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:55" (1/1) ... [2023-11-06 21:14:55,488 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:55" (1/1) ... [2023-11-06 21:14:55,492 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:55" (1/1) ... [2023-11-06 21:14:55,495 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:55" (1/1) ... [2023-11-06 21:14:55,500 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 21:14:55,501 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 21:14:55,502 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 21:14:55,502 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 21:14:55,503 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:55" (1/1) ... [2023-11-06 21:14:55,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:14:55,527 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_962c754a-719b-4ae8-82dc-69a5759d4018/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:14:55,542 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_962c754a-719b-4ae8-82dc-69a5759d4018/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 21:14:55,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_962c754a-719b-4ae8-82dc-69a5759d4018/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 21:14:55,595 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 21:14:55,595 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 21:14:55,595 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 21:14:55,596 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 21:14:55,596 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-06 21:14:55,596 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-06 21:14:55,596 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-06 21:14:55,596 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-06 21:14:55,596 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-06 21:14:55,597 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-06 21:14:55,597 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-11-06 21:14:55,597 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-11-06 21:14:55,597 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 21:14:55,597 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-06 21:14:55,598 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-06 21:14:55,598 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-06 21:14:55,598 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 21:14:55,598 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 21:14:55,598 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 21:14:55,600 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 21:14:55,738 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 21:14:55,740 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 21:14:56,553 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 21:14:57,179 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 21:14:57,180 INFO L302 CfgBuilder]: Removed 7 assume(true) statements. [2023-11-06 21:14:57,184 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:14:57 BoogieIcfgContainer [2023-11-06 21:14:57,184 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 21:14:57,188 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 21:14:57,189 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 21:14:57,192 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 21:14:57,193 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:14:55" (1/3) ... [2023-11-06 21:14:57,194 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33fdc0ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:14:57, skipping insertion in model container [2023-11-06 21:14:57,194 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:55" (2/3) ... [2023-11-06 21:14:57,196 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33fdc0ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:14:57, skipping insertion in model container [2023-11-06 21:14:57,197 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:14:57" (3/3) ... [2023-11-06 21:14:57,198 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-buffer-series.wvr.c [2023-11-06 21:14:57,208 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 21:14:57,220 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 21:14:57,220 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2023-11-06 21:14:57,221 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 21:14:57,543 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-06 21:14:57,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 305 places, 314 transitions, 656 flow [2023-11-06 21:14:57,908 INFO L124 PetriNetUnfolderBase]: 22/310 cut-off events. [2023-11-06 21:14:57,909 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-06 21:14:57,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 327 conditions, 310 events. 22/310 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 327 event pairs, 0 based on Foata normal form. 0/256 useless extension candidates. Maximal degree in co-relation 261. Up to 2 conditions per place. [2023-11-06 21:14:57,924 INFO L82 GeneralOperation]: Start removeDead. Operand has 305 places, 314 transitions, 656 flow [2023-11-06 21:14:57,942 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 276 places, 284 transitions, 589 flow [2023-11-06 21:14:57,948 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 21:14:57,972 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 276 places, 284 transitions, 589 flow [2023-11-06 21:14:57,978 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 276 places, 284 transitions, 589 flow [2023-11-06 21:14:57,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 276 places, 284 transitions, 589 flow [2023-11-06 21:14:58,096 INFO L124 PetriNetUnfolderBase]: 21/284 cut-off events. [2023-11-06 21:14:58,096 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-06 21:14:58,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 300 conditions, 284 events. 21/284 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 326 event pairs, 0 based on Foata normal form. 0/231 useless extension candidates. Maximal degree in co-relation 261. Up to 2 conditions per place. [2023-11-06 21:14:58,108 INFO L119 LiptonReduction]: Number of co-enabled transitions 4644 [2023-11-06 21:15:21,380 INFO L134 LiptonReduction]: Checked pairs total: 9404 [2023-11-06 21:15:21,381 INFO L136 LiptonReduction]: Total number of compositions: 303 [2023-11-06 21:15:21,396 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 21:15:21,403 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;@11b17b82, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 21:15:21,404 INFO L358 AbstractCegarLoop]: Starting to check reachability of 62 error locations. [2023-11-06 21:15:21,407 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 21:15:21,407 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-11-06 21:15:21,407 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 21:15:21,407 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:15:21,408 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-06 21:15:21,409 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2023-11-06 21:15:21,414 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:15:21,414 INFO L85 PathProgramCache]: Analyzing trace with hash 53251, now seen corresponding path program 1 times [2023-11-06 21:15:21,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:15:21,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808709195] [2023-11-06 21:15:21,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:15:21,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:15:21,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:15:21,766 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 21:15:21,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:15:21,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808709195] [2023-11-06 21:15:21,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808709195] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:15:21,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:15:21,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 21:15:21,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875760104] [2023-11-06 21:15:21,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:15:21,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:15:21,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:15:21,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:15:21,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:15:21,885 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 243 out of 617 [2023-11-06 21:15:21,893 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 69 transitions, 159 flow. Second operand has 3 states, 3 states have (on average 243.66666666666666) internal successors, (731), 3 states have internal predecessors, (731), 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 21:15:21,893 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:15:21,893 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 243 of 617 [2023-11-06 21:15:21,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:15:29,271 INFO L124 PetriNetUnfolderBase]: 29719/37288 cut-off events. [2023-11-06 21:15:29,272 INFO L125 PetriNetUnfolderBase]: For 527/527 co-relation queries the response was YES. [2023-11-06 21:15:29,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75122 conditions, 37288 events. 29719/37288 cut-off events. For 527/527 co-relation queries the response was YES. Maximal size of possible extension queue 3320. Compared 202925 event pairs, 20248 based on Foata normal form. 0/12667 useless extension candidates. Maximal degree in co-relation 66046. Up to 36534 conditions per place. [2023-11-06 21:15:29,691 INFO L140 encePairwiseOnDemand]: 593/617 looper letters, 51 selfloop transitions, 7 changer transitions 0/64 dead transitions. [2023-11-06 21:15:29,691 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 64 transitions, 265 flow [2023-11-06 21:15:29,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:15:29,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 21:15:29,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 804 transitions. [2023-11-06 21:15:29,719 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4343598055105348 [2023-11-06 21:15:29,720 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 804 transitions. [2023-11-06 21:15:29,721 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 804 transitions. [2023-11-06 21:15:29,726 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:15:29,728 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 804 transitions. [2023-11-06 21:15:29,736 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 268.0) internal successors, (804), 3 states have internal predecessors, (804), 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 21:15:29,750 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 617.0) internal successors, (2468), 4 states have internal predecessors, (2468), 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 21:15:29,752 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 617.0) internal successors, (2468), 4 states have internal predecessors, (2468), 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 21:15:29,754 INFO L175 Difference]: Start difference. First operand has 75 places, 69 transitions, 159 flow. Second operand 3 states and 804 transitions. [2023-11-06 21:15:29,756 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 64 transitions, 265 flow [2023-11-06 21:15:30,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 64 transitions, 252 flow, removed 0 selfloop flow, removed 7 redundant places. [2023-11-06 21:15:30,230 INFO L231 Difference]: Finished difference. Result has 61 places, 64 transitions, 188 flow [2023-11-06 21:15:30,232 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=617, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=188, PETRI_PLACES=61, PETRI_TRANSITIONS=64} [2023-11-06 21:15:30,235 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -14 predicate places. [2023-11-06 21:15:30,236 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 64 transitions, 188 flow [2023-11-06 21:15:30,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 243.66666666666666) internal successors, (731), 3 states have internal predecessors, (731), 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 21:15:30,237 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:15:30,237 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-06 21:15:30,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 21:15:30,238 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2023-11-06 21:15:30,238 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:15:30,239 INFO L85 PathProgramCache]: Analyzing trace with hash 1652324, now seen corresponding path program 1 times [2023-11-06 21:15:30,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:15:30,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475017649] [2023-11-06 21:15:30,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:15:30,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:15:30,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:15:30,440 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 21:15:30,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:15:30,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475017649] [2023-11-06 21:15:30,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475017649] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:15:30,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [896141982] [2023-11-06 21:15:30,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:15:30,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:15:30,442 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_962c754a-719b-4ae8-82dc-69a5759d4018/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:15:30,446 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_962c754a-719b-4ae8-82dc-69a5759d4018/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:15:30,470 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_962c754a-719b-4ae8-82dc-69a5759d4018/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 21:15:30,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:15:30,631 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 21:15:30,636 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:15:30,683 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 21:15:30,684 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:15:30,702 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 21:15:30,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [896141982] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 21:15:30,703 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 21:15:30,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-11-06 21:15:30,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155294018] [2023-11-06 21:15:30,704 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 21:15:30,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 21:15:30,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:15:30,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 21:15:30,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-06 21:15:30,819 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 243 out of 617 [2023-11-06 21:15:30,823 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 64 transitions, 188 flow. Second operand has 7 states, 7 states have (on average 244.14285714285714) internal successors, (1709), 7 states have internal predecessors, (1709), 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 21:15:30,823 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:15:30,824 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 243 of 617 [2023-11-06 21:15:30,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:15:36,342 INFO L124 PetriNetUnfolderBase]: 29737/37315 cut-off events. [2023-11-06 21:15:36,343 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 21:15:36,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74664 conditions, 37315 events. 29737/37315 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3320. Compared 203387 event pairs, 20248 based on Foata normal form. 0/12686 useless extension candidates. Maximal degree in co-relation 74509. Up to 36534 conditions per place. [2023-11-06 21:15:36,607 INFO L140 encePairwiseOnDemand]: 604/617 looper letters, 48 selfloop transitions, 37 changer transitions 0/91 dead transitions. [2023-11-06 21:15:36,607 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 91 transitions, 478 flow [2023-11-06 21:15:36,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 21:15:36,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 21:15:36,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1795 transitions. [2023-11-06 21:15:36,624 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4156054642278305 [2023-11-06 21:15:36,624 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1795 transitions. [2023-11-06 21:15:36,624 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1795 transitions. [2023-11-06 21:15:36,626 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:15:36,626 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1795 transitions. [2023-11-06 21:15:36,632 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 256.42857142857144) internal successors, (1795), 7 states have internal predecessors, (1795), 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 21:15:36,643 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 617.0) internal successors, (4936), 8 states have internal predecessors, (4936), 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 21:15:36,648 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 617.0) internal successors, (4936), 8 states have internal predecessors, (4936), 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 21:15:36,648 INFO L175 Difference]: Start difference. First operand has 61 places, 64 transitions, 188 flow. Second operand 7 states and 1795 transitions. [2023-11-06 21:15:36,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 91 transitions, 478 flow [2023-11-06 21:15:36,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 91 transitions, 452 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 21:15:36,654 INFO L231 Difference]: Finished difference. Result has 68 places, 91 transitions, 418 flow [2023-11-06 21:15:36,654 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=617, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=418, PETRI_PLACES=68, PETRI_TRANSITIONS=91} [2023-11-06 21:15:36,655 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -7 predicate places. [2023-11-06 21:15:36,655 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 91 transitions, 418 flow [2023-11-06 21:15:36,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 244.14285714285714) internal successors, (1709), 7 states have internal predecessors, (1709), 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 21:15:36,657 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:15:36,657 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1] [2023-11-06 21:15:36,665 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_962c754a-719b-4ae8-82dc-69a5759d4018/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-06 21:15:36,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_962c754a-719b-4ae8-82dc-69a5759d4018/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:15:36,863 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2023-11-06 21:15:36,864 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:15:36,864 INFO L85 PathProgramCache]: Analyzing trace with hash 51223586, now seen corresponding path program 1 times [2023-11-06 21:15:36,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:15:36,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456045019] [2023-11-06 21:15:36,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:15:36,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:15:36,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:15:37,003 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:15:37,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:15:37,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456045019] [2023-11-06 21:15:37,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456045019] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:15:37,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1012692776] [2023-11-06 21:15:37,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:15:37,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:15:37,005 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_962c754a-719b-4ae8-82dc-69a5759d4018/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:15:37,006 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_962c754a-719b-4ae8-82dc-69a5759d4018/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:15:37,034 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_962c754a-719b-4ae8-82dc-69a5759d4018/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 21:15:37,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:15:37,173 INFO L262 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-06 21:15:37,174 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:15:37,187 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:15:37,188 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 21:15:37,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1012692776] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:15:37,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 21:15:37,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-11-06 21:15:37,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907988771] [2023-11-06 21:15:37,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:15:37,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 21:15:37,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:15:37,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 21:15:37,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-06 21:15:37,272 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 243 out of 617 [2023-11-06 21:15:37,274 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 91 transitions, 418 flow. Second operand has 5 states, 5 states have (on average 243.8) internal successors, (1219), 5 states have internal predecessors, (1219), 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 21:15:37,274 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:15:37,274 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 243 of 617 [2023-11-06 21:15:37,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:15:42,245 INFO L124 PetriNetUnfolderBase]: 29728/37303 cut-off events. [2023-11-06 21:15:42,246 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-11-06 21:15:42,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74674 conditions, 37303 events. 29728/37303 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 3320. Compared 203311 event pairs, 20248 based on Foata normal form. 0/12688 useless extension candidates. Maximal degree in co-relation 74580. Up to 36525 conditions per place. [2023-11-06 21:15:42,527 INFO L140 encePairwiseOnDemand]: 607/617 looper letters, 53 selfloop transitions, 20 changer transitions 0/79 dead transitions. [2023-11-06 21:15:42,528 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 79 transitions, 483 flow [2023-11-06 21:15:42,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 21:15:42,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 21:15:42,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1282 transitions. [2023-11-06 21:15:42,534 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4155591572123177 [2023-11-06 21:15:42,534 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1282 transitions. [2023-11-06 21:15:42,534 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1282 transitions. [2023-11-06 21:15:42,535 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:15:42,535 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1282 transitions. [2023-11-06 21:15:42,539 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 256.4) internal successors, (1282), 5 states have internal predecessors, (1282), 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 21:15:42,547 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 617.0) internal successors, (3702), 6 states have internal predecessors, (3702), 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 21:15:42,549 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 617.0) internal successors, (3702), 6 states have internal predecessors, (3702), 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 21:15:42,549 INFO L175 Difference]: Start difference. First operand has 68 places, 91 transitions, 418 flow. Second operand 5 states and 1282 transitions. [2023-11-06 21:15:42,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 79 transitions, 483 flow [2023-11-06 21:15:42,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 79 transitions, 446 flow, removed 12 selfloop flow, removed 1 redundant places. [2023-11-06 21:15:42,557 INFO L231 Difference]: Finished difference. Result has 67 places, 79 transitions, 340 flow [2023-11-06 21:15:42,557 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=617, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=340, PETRI_PLACES=67, PETRI_TRANSITIONS=79} [2023-11-06 21:15:42,559 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -8 predicate places. [2023-11-06 21:15:42,559 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 79 transitions, 340 flow [2023-11-06 21:15:42,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 243.8) internal successors, (1219), 5 states have internal predecessors, (1219), 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 21:15:42,561 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:15:42,561 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-11-06 21:15:42,573 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_962c754a-719b-4ae8-82dc-69a5759d4018/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 21:15:42,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_962c754a-719b-4ae8-82dc-69a5759d4018/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:15:42,767 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2023-11-06 21:15:42,767 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:15:42,768 INFO L85 PathProgramCache]: Analyzing trace with hash 1981276227, now seen corresponding path program 2 times [2023-11-06 21:15:42,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:15:42,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714740504] [2023-11-06 21:15:42,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:15:42,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:15:42,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:15:42,945 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:15:42,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:15:42,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714740504] [2023-11-06 21:15:42,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714740504] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:15:42,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1325377123] [2023-11-06 21:15:42,947 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 21:15:42,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:15:42,948 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_962c754a-719b-4ae8-82dc-69a5759d4018/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:15:42,949 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_962c754a-719b-4ae8-82dc-69a5759d4018/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:15:42,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_962c754a-719b-4ae8-82dc-69a5759d4018/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 21:15:43,104 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-06 21:15:43,105 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 21:15:43,106 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 21:15:43,107 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:15:43,123 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-06 21:15:43,123 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 21:15:43,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1325377123] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:15:43,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 21:15:43,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-11-06 21:15:43,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416938297] [2023-11-06 21:15:43,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:15:43,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:15:43,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:15:43,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:15:43,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-11-06 21:15:43,173 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 249 out of 617 [2023-11-06 21:15:43,175 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 79 transitions, 340 flow. Second operand has 3 states, 3 states have (on average 250.0) internal successors, (750), 3 states have internal predecessors, (750), 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 21:15:43,175 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:15:43,175 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 249 of 617 [2023-11-06 21:15:43,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:15:48,198 INFO L124 PetriNetUnfolderBase]: 29728/37302 cut-off events. [2023-11-06 21:15:48,199 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-11-06 21:15:48,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74668 conditions, 37302 events. 29728/37302 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 3320. Compared 202962 event pairs, 20248 based on Foata normal form. 1/12694 useless extension candidates. Maximal degree in co-relation 74584. Up to 36547 conditions per place. [2023-11-06 21:15:48,462 INFO L140 encePairwiseOnDemand]: 614/617 looper letters, 66 selfloop transitions, 6 changer transitions 0/78 dead transitions. [2023-11-06 21:15:48,462 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 78 transitions, 474 flow [2023-11-06 21:15:48,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:15:48,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 21:15:48,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 796 transitions. [2023-11-06 21:15:48,466 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43003781739600216 [2023-11-06 21:15:48,466 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 796 transitions. [2023-11-06 21:15:48,467 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 796 transitions. [2023-11-06 21:15:48,467 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:15:48,468 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 796 transitions. [2023-11-06 21:15:48,470 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 265.3333333333333) internal successors, (796), 3 states have internal predecessors, (796), 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 21:15:48,475 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 617.0) internal successors, (2468), 4 states have internal predecessors, (2468), 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 21:15:48,477 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 617.0) internal successors, (2468), 4 states have internal predecessors, (2468), 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 21:15:48,477 INFO L175 Difference]: Start difference. First operand has 67 places, 79 transitions, 340 flow. Second operand 3 states and 796 transitions. [2023-11-06 21:15:48,477 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 78 transitions, 474 flow [2023-11-06 21:15:48,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 78 transitions, 446 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-06 21:15:48,482 INFO L231 Difference]: Finished difference. Result has 65 places, 78 transitions, 314 flow [2023-11-06 21:15:48,482 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=617, PETRI_DIFFERENCE_MINUEND_FLOW=302, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=314, PETRI_PLACES=65, PETRI_TRANSITIONS=78} [2023-11-06 21:15:48,483 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -10 predicate places. [2023-11-06 21:15:48,484 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 78 transitions, 314 flow [2023-11-06 21:15:48,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 250.0) internal successors, (750), 3 states have internal predecessors, (750), 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 21:15:48,485 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:15:48,485 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2023-11-06 21:15:48,497 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_962c754a-719b-4ae8-82dc-69a5759d4018/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 21:15:48,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_962c754a-719b-4ae8-82dc-69a5759d4018/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:15:48,685 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2023-11-06 21:15:48,686 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:15:48,686 INFO L85 PathProgramCache]: Analyzing trace with hash -2110761066, now seen corresponding path program 1 times [2023-11-06 21:15:48,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:15:48,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791465569] [2023-11-06 21:15:48,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:15:48,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:15:48,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:15:48,816 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:15:48,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:15:48,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791465569] [2023-11-06 21:15:48,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791465569] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:15:48,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [35203196] [2023-11-06 21:15:48,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:15:48,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:15:48,818 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_962c754a-719b-4ae8-82dc-69a5759d4018/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:15:48,819 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_962c754a-719b-4ae8-82dc-69a5759d4018/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:15:48,825 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_962c754a-719b-4ae8-82dc-69a5759d4018/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 21:15:48,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:15:48,990 INFO L262 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-06 21:15:48,992 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:15:49,014 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:15:49,014 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:15:49,074 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:15:49,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [35203196] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 21:15:49,074 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 21:15:49,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-11-06 21:15:49,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736076924] [2023-11-06 21:15:49,075 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 21:15:49,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-06 21:15:49,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:15:49,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-06 21:15:49,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-11-06 21:15:49,285 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 243 out of 617 [2023-11-06 21:15:49,290 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 78 transitions, 314 flow. Second operand has 13 states, 13 states have (on average 244.15384615384616) internal successors, (3174), 13 states have internal predecessors, (3174), 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 21:15:49,290 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:15:49,291 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 243 of 617 [2023-11-06 21:15:49,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:15:54,854 INFO L124 PetriNetUnfolderBase]: 29746/37338 cut-off events. [2023-11-06 21:15:54,855 INFO L125 PetriNetUnfolderBase]: For 58/58 co-relation queries the response was YES. [2023-11-06 21:15:54,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74795 conditions, 37338 events. 29746/37338 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 3320. Compared 202842 event pairs, 20248 based on Foata normal form. 12/12741 useless extension candidates. Maximal degree in co-relation 74691. Up to 36539 conditions per place. [2023-11-06 21:15:55,089 INFO L140 encePairwiseOnDemand]: 608/617 looper letters, 47 selfloop transitions, 61 changer transitions 0/114 dead transitions. [2023-11-06 21:15:55,089 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 114 transitions, 764 flow [2023-11-06 21:15:55,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 21:15:55,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-06 21:15:55,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3036 transitions. [2023-11-06 21:15:55,101 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4100486223662885 [2023-11-06 21:15:55,102 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3036 transitions. [2023-11-06 21:15:55,102 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3036 transitions. [2023-11-06 21:15:55,104 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:15:55,105 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3036 transitions. [2023-11-06 21:15:55,113 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 253.0) internal successors, (3036), 12 states have internal predecessors, (3036), 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 21:15:55,127 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 617.0) internal successors, (8021), 13 states have internal predecessors, (8021), 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 21:15:55,130 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 617.0) internal successors, (8021), 13 states have internal predecessors, (8021), 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 21:15:55,130 INFO L175 Difference]: Start difference. First operand has 65 places, 78 transitions, 314 flow. Second operand 12 states and 3036 transitions. [2023-11-06 21:15:55,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 114 transitions, 764 flow [2023-11-06 21:15:55,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 114 transitions, 740 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 21:15:55,137 INFO L231 Difference]: Finished difference. Result has 80 places, 114 transitions, 732 flow [2023-11-06 21:15:55,137 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=617, PETRI_DIFFERENCE_MINUEND_FLOW=302, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=732, PETRI_PLACES=80, PETRI_TRANSITIONS=114} [2023-11-06 21:15:55,140 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 5 predicate places. [2023-11-06 21:15:55,140 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 114 transitions, 732 flow [2023-11-06 21:15:55,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 244.15384615384616) internal successors, (3174), 13 states have internal predecessors, (3174), 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 21:15:55,142 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:15:55,142 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:15:55,152 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_962c754a-719b-4ae8-82dc-69a5759d4018/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-06 21:15:55,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_962c754a-719b-4ae8-82dc-69a5759d4018/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:15:55,351 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2023-11-06 21:15:55,351 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:15:55,351 INFO L85 PathProgramCache]: Analyzing trace with hash -2091055151, now seen corresponding path program 1 times [2023-11-06 21:15:55,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:15:55,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815596926] [2023-11-06 21:15:55,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:15:55,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:15:55,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:15:55,442 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 21:15:55,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:15:55,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815596926] [2023-11-06 21:15:55,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815596926] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:15:55,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:15:55,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 21:15:55,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775286832] [2023-11-06 21:15:55,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:15:55,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:15:55,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:15:55,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:15:55,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:15:55,455 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 257 out of 617 [2023-11-06 21:15:55,456 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 114 transitions, 732 flow. Second operand has 3 states, 3 states have (on average 259.0) internal successors, (777), 3 states have internal predecessors, (777), 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 21:15:55,457 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:15:55,457 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 257 of 617 [2023-11-06 21:15:55,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand