./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 cf1a7837 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_efb18647-6002-47ad-b3fe-0806076acd8f/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efb18647-6002-47ad-b3fe-0806076acd8f/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efb18647-6002-47ad-b3fe-0806076acd8f/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efb18647-6002-47ad-b3fe-0806076acd8f/bin/uautomizer-verify-uTZkv6EMXl/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_efb18647-6002-47ad-b3fe-0806076acd8f/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efb18647-6002-47ad-b3fe-0806076acd8f/bin/uautomizer-verify-uTZkv6EMXl --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8dbd267b0e0821e8d358e8d234024d8e484ea32431972ed8b70b87052179a50c --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:11:44,308 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:11:44,408 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efb18647-6002-47ad-b3fe-0806076acd8f/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-12 02:11:44,412 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:11:44,413 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:11:44,443 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:11:44,445 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:11:44,445 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:11:44,446 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:11:44,452 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:11:44,452 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:11:44,454 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:11:44,454 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:11:44,456 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:11:44,456 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 02:11:44,457 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:11:44,457 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:11:44,458 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:11:44,458 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:11:44,458 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 02:11:44,459 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:11:44,459 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 02:11:44,460 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-12 02:11:44,460 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 02:11:44,461 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:11:44,461 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:11:44,461 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:11:44,462 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:11:44,463 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:11:44,463 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:11:44,465 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:11:44,465 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:11:44,465 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:11:44,465 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 02:11:44,466 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:11:44,466 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:11:44,466 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:11:44,466 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 02:11:44,467 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:11:44,468 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:11:44,468 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:11:44,468 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_efb18647-6002-47ad-b3fe-0806076acd8f/bin/uautomizer-verify-uTZkv6EMXl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efb18647-6002-47ad-b3fe-0806076acd8f/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8dbd267b0e0821e8d358e8d234024d8e484ea32431972ed8b70b87052179a50c [2023-11-12 02:11:44,730 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:11:44,751 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:11:44,754 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:11:44,755 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:11:44,755 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:11:44,757 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efb18647-6002-47ad-b3fe-0806076acd8f/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/weaver/popl20-more-buffer-series.wvr.c [2023-11-12 02:11:47,820 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:11:48,208 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:11:48,209 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efb18647-6002-47ad-b3fe-0806076acd8f/sv-benchmarks/c/weaver/popl20-more-buffer-series.wvr.c [2023-11-12 02:11:48,221 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efb18647-6002-47ad-b3fe-0806076acd8f/bin/uautomizer-verify-uTZkv6EMXl/data/48021fb48/73b52af2e4bf4efab747e31f88743245/FLAG8b55bd0d6 [2023-11-12 02:11:48,238 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efb18647-6002-47ad-b3fe-0806076acd8f/bin/uautomizer-verify-uTZkv6EMXl/data/48021fb48/73b52af2e4bf4efab747e31f88743245 [2023-11-12 02:11:48,246 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:11:48,248 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:11:48,251 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:11:48,252 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:11:48,258 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:11:48,259 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:11:48" (1/1) ... [2023-11-12 02:11:48,260 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4de838d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:11:48, skipping insertion in model container [2023-11-12 02:11:48,260 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:11:48" (1/1) ... [2023-11-12 02:11:48,307 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:11:48,536 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:11:48,563 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:11:48,599 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:11:48,608 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:11:48,609 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:11:48,617 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:11:48,617 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:11:48 WrapperNode [2023-11-12 02:11:48,618 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:11:48,619 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:11:48,619 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:11:48,619 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:11:48,627 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:11:48" (1/1) ... [2023-11-12 02:11:48,639 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:11:48" (1/1) ... [2023-11-12 02:11:48,679 INFO L138 Inliner]: procedures = 27, calls = 88, calls flagged for inlining = 23, calls inlined = 29, statements flattened = 414 [2023-11-12 02:11:48,680 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:11:48,681 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:11:48,681 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:11:48,681 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:11:48,692 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:11:48" (1/1) ... [2023-11-12 02:11:48,692 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:11:48" (1/1) ... [2023-11-12 02:11:48,698 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:11:48" (1/1) ... [2023-11-12 02:11:48,698 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:11:48" (1/1) ... [2023-11-12 02:11:48,713 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:11:48" (1/1) ... [2023-11-12 02:11:48,719 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:11:48" (1/1) ... [2023-11-12 02:11:48,725 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:11:48" (1/1) ... [2023-11-12 02:11:48,736 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:11:48" (1/1) ... [2023-11-12 02:11:48,742 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:11:48,743 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:11:48,748 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:11:48,748 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:11:48,749 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:11:48" (1/1) ... [2023-11-12 02:11:48,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:11:48,780 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efb18647-6002-47ad-b3fe-0806076acd8f/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:11:48,797 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efb18647-6002-47ad-b3fe-0806076acd8f/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:11:48,816 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efb18647-6002-47ad-b3fe-0806076acd8f/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:11:48,838 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:11:48,839 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 02:11:48,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 02:11:48,839 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 02:11:48,839 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-12 02:11:48,839 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-12 02:11:48,840 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-12 02:11:48,840 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-12 02:11:48,840 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-12 02:11:48,840 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-12 02:11:48,840 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-11-12 02:11:48,841 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-11-12 02:11:48,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:11:48,841 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-12 02:11:48,841 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-12 02:11:48,841 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-12 02:11:48,841 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:11:48,842 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:11:48,842 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 02:11:48,844 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-12 02:11:48,982 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:11:48,985 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:11:49,695 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:11:50,431 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:11:50,431 INFO L302 CfgBuilder]: Removed 7 assume(true) statements. [2023-11-12 02:11:50,434 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:11:50 BoogieIcfgContainer [2023-11-12 02:11:50,434 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:11:50,437 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:11:50,437 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:11:50,440 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:11:50,441 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:11:48" (1/3) ... [2023-11-12 02:11:50,442 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b522158 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:11:50, skipping insertion in model container [2023-11-12 02:11:50,442 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:11:48" (2/3) ... [2023-11-12 02:11:50,442 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b522158 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:11:50, skipping insertion in model container [2023-11-12 02:11:50,443 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:11:50" (3/3) ... [2023-11-12 02:11:50,444 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-buffer-series.wvr.c [2023-11-12 02:11:50,454 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-12 02:11:50,466 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:11:50,466 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2023-11-12 02:11:50,467 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-12 02:11:50,683 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-12 02:11:50,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 309 places, 318 transitions, 664 flow [2023-11-12 02:11:50,947 INFO L124 PetriNetUnfolderBase]: 22/314 cut-off events. [2023-11-12 02:11:50,950 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-12 02:11:50,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 331 conditions, 314 events. 22/314 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 333 event pairs, 0 based on Foata normal form. 0/260 useless extension candidates. Maximal degree in co-relation 264. Up to 2 conditions per place. [2023-11-12 02:11:50,959 INFO L82 GeneralOperation]: Start removeDead. Operand has 309 places, 318 transitions, 664 flow [2023-11-12 02:11:50,974 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 280 places, 288 transitions, 597 flow [2023-11-12 02:11:50,979 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-12 02:11:50,998 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 280 places, 288 transitions, 597 flow [2023-11-12 02:11:51,006 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 280 places, 288 transitions, 597 flow [2023-11-12 02:11:51,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 280 places, 288 transitions, 597 flow [2023-11-12 02:11:51,112 INFO L124 PetriNetUnfolderBase]: 21/288 cut-off events. [2023-11-12 02:11:51,112 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-12 02:11:51,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 304 conditions, 288 events. 21/288 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 330 event pairs, 0 based on Foata normal form. 0/235 useless extension candidates. Maximal degree in co-relation 264. Up to 2 conditions per place. [2023-11-12 02:11:51,121 INFO L119 LiptonReduction]: Number of co-enabled transitions 5148 [2023-11-12 02:12:11,809 INFO L134 LiptonReduction]: Checked pairs total: 9064 [2023-11-12 02:12:11,810 INFO L136 LiptonReduction]: Total number of compositions: 301 [2023-11-12 02:12:11,826 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:12:11,833 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@187d9ed2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:12:11,834 INFO L358 AbstractCegarLoop]: Starting to check reachability of 62 error locations. [2023-11-12 02:12:11,837 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-12 02:12:11,837 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-11-12 02:12:11,838 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:12:11,838 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:12:11,839 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-12 02:12:11,839 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2023-11-12 02:12:11,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:12:11,845 INFO L85 PathProgramCache]: Analyzing trace with hash 53504, now seen corresponding path program 1 times [2023-11-12 02:12:11,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:12:11,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608894540] [2023-11-12 02:12:11,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:11,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:12:11,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:12,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:12:12,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:12:12,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608894540] [2023-11-12 02:12:12,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608894540] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:12:12,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:12:12,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:12:12,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435512288] [2023-11-12 02:12:12,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:12:12,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:12:12,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:12:12,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:12:12,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:12:12,380 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 619 [2023-11-12 02:12:12,387 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 69 transitions, 159 flow. Second operand has 3 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) [2023-11-12 02:12:12,387 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:12:12,388 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 619 [2023-11-12 02:12:12,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:12:19,445 INFO L124 PetriNetUnfolderBase]: 28964/37941 cut-off events. [2023-11-12 02:12:19,445 INFO L125 PetriNetUnfolderBase]: For 1993/1993 co-relation queries the response was YES. [2023-11-12 02:12:19,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76559 conditions, 37941 events. 28964/37941 cut-off events. For 1993/1993 co-relation queries the response was YES. Maximal size of possible extension queue 2320. Compared 198304 event pairs, 25591 based on Foata normal form. 0/17775 useless extension candidates. Maximal degree in co-relation 66336. Up to 37093 conditions per place. [2023-11-12 02:12:19,801 INFO L140 encePairwiseOnDemand]: 603/619 looper letters, 51 selfloop transitions, 2 changer transitions 0/55 dead transitions. [2023-11-12 02:12:19,801 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 55 transitions, 237 flow [2023-11-12 02:12:19,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:12:19,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:12:19,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 808 transitions. [2023-11-12 02:12:19,827 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4351103931071621 [2023-11-12 02:12:19,828 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 808 transitions. [2023-11-12 02:12:19,829 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 808 transitions. [2023-11-12 02:12:19,835 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:12:19,837 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 808 transitions. [2023-11-12 02:12:19,846 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 269.3333333333333) internal successors, (808), 3 states have internal predecessors, (808), 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) [2023-11-12 02:12:19,859 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 619.0) internal successors, (2476), 4 states have internal predecessors, (2476), 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) [2023-11-12 02:12:19,861 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 619.0) internal successors, (2476), 4 states have internal predecessors, (2476), 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) [2023-11-12 02:12:19,863 INFO L175 Difference]: Start difference. First operand has 75 places, 69 transitions, 159 flow. Second operand 3 states and 808 transitions. [2023-11-12 02:12:19,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 55 transitions, 237 flow [2023-11-12 02:12:19,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 55 transitions, 224 flow, removed 0 selfloop flow, removed 7 redundant places. [2023-11-12 02:12:19,962 INFO L231 Difference]: Finished difference. Result has 56 places, 55 transitions, 122 flow [2023-11-12 02:12:19,964 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=619, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=122, PETRI_PLACES=56, PETRI_TRANSITIONS=55} [2023-11-12 02:12:19,969 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -19 predicate places. [2023-11-12 02:12:19,969 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 55 transitions, 122 flow [2023-11-12 02:12:19,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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) [2023-11-12 02:12:19,971 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:12:19,971 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-12 02:12:19,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 02:12:19,972 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2023-11-12 02:12:19,983 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:12:19,983 INFO L85 PathProgramCache]: Analyzing trace with hash 53503, now seen corresponding path program 1 times [2023-11-12 02:12:19,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:12:19,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596216405] [2023-11-12 02:12:19,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:19,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:12:20,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:20,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:12:20,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:12:20,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596216405] [2023-11-12 02:12:20,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596216405] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:12:20,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:12:20,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:12:20,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915391698] [2023-11-12 02:12:20,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:12:20,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:12:20,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:12:20,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:12:20,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:12:20,192 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 619 [2023-11-12 02:12:20,194 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 55 transitions, 122 flow. Second operand has 3 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) [2023-11-12 02:12:20,194 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:12:20,194 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 619 [2023-11-12 02:12:20,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:12:25,593 INFO L124 PetriNetUnfolderBase]: 28967/37947 cut-off events. [2023-11-12 02:12:25,594 INFO L125 PetriNetUnfolderBase]: For 504/504 co-relation queries the response was YES. [2023-11-12 02:12:25,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75865 conditions, 37947 events. 28967/37947 cut-off events. For 504/504 co-relation queries the response was YES. Maximal size of possible extension queue 2267. Compared 197713 event pairs, 25591 based on Foata normal form. 0/17780 useless extension candidates. Maximal degree in co-relation 75827. Up to 37103 conditions per place. [2023-11-12 02:12:25,809 INFO L140 encePairwiseOnDemand]: 609/619 looper letters, 52 selfloop transitions, 7 changer transitions 0/61 dead transitions. [2023-11-12 02:12:25,810 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 61 transitions, 254 flow [2023-11-12 02:12:25,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:12:25,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:12:25,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 803 transitions. [2023-11-12 02:12:25,814 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4324178782983306 [2023-11-12 02:12:25,814 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 803 transitions. [2023-11-12 02:12:25,815 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 803 transitions. [2023-11-12 02:12:25,815 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:12:25,816 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 803 transitions. [2023-11-12 02:12:25,818 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 267.6666666666667) internal successors, (803), 3 states have internal predecessors, (803), 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) [2023-11-12 02:12:25,824 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 619.0) internal successors, (2476), 4 states have internal predecessors, (2476), 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) [2023-11-12 02:12:25,826 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 619.0) internal successors, (2476), 4 states have internal predecessors, (2476), 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) [2023-11-12 02:12:25,827 INFO L175 Difference]: Start difference. First operand has 56 places, 55 transitions, 122 flow. Second operand 3 states and 803 transitions. [2023-11-12 02:12:25,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 61 transitions, 254 flow [2023-11-12 02:12:25,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 61 transitions, 248 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:12:25,830 INFO L231 Difference]: Finished difference. Result has 58 places, 61 transitions, 176 flow [2023-11-12 02:12:25,830 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=619, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=54, 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=176, PETRI_PLACES=58, PETRI_TRANSITIONS=61} [2023-11-12 02:12:25,831 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -17 predicate places. [2023-11-12 02:12:25,831 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 61 transitions, 176 flow [2023-11-12 02:12:25,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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) [2023-11-12 02:12:25,832 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:12:25,832 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-12 02:12:25,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 02:12:25,833 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2023-11-12 02:12:25,834 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:12:25,834 INFO L85 PathProgramCache]: Analyzing trace with hash 1660667, now seen corresponding path program 1 times [2023-11-12 02:12:25,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:12:25,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566419425] [2023-11-12 02:12:25,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:25,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:12:25,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:25,964 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:12:25,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:12:25,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566419425] [2023-11-12 02:12:25,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566419425] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:12:25,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [467407973] [2023-11-12 02:12:25,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:25,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:12:25,968 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efb18647-6002-47ad-b3fe-0806076acd8f/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:12:25,972 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efb18647-6002-47ad-b3fe-0806076acd8f/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:12:25,979 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efb18647-6002-47ad-b3fe-0806076acd8f/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 02:12:26,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:26,144 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 02:12:26,148 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:12:26,207 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:12:26,207 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:12:26,233 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:12:26,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [467407973] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:12:26,236 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:12:26,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-11-12 02:12:26,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785615152] [2023-11-12 02:12:26,238 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:12:26,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:12:26,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:12:26,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:12:26,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:12:26,357 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 619 [2023-11-12 02:12:26,360 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 61 transitions, 176 flow. Second operand has 7 states, 7 states have (on average 248.14285714285714) internal successors, (1737), 7 states have internal predecessors, (1737), 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) [2023-11-12 02:12:26,361 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:12:26,361 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 619 [2023-11-12 02:12:26,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:12:31,058 INFO L124 PetriNetUnfolderBase]: 28976/37965 cut-off events. [2023-11-12 02:12:31,058 INFO L125 PetriNetUnfolderBase]: For 504/504 co-relation queries the response was YES. [2023-11-12 02:12:31,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75946 conditions, 37965 events. 28976/37965 cut-off events. For 504/504 co-relation queries the response was YES. Maximal size of possible extension queue 2267. Compared 197711 event pairs, 25591 based on Foata normal form. 0/17797 useless extension candidates. Maximal degree in co-relation 75827. Up to 37106 conditions per place. [2023-11-12 02:12:31,266 INFO L140 encePairwiseOnDemand]: 609/619 looper letters, 52 selfloop transitions, 25 changer transitions 0/79 dead transitions. [2023-11-12 02:12:31,266 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 79 transitions, 414 flow [2023-11-12 02:12:31,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:12:31,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-12 02:12:31,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1568 transitions. [2023-11-12 02:12:31,273 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42218632202477113 [2023-11-12 02:12:31,273 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1568 transitions. [2023-11-12 02:12:31,274 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1568 transitions. [2023-11-12 02:12:31,275 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:12:31,275 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1568 transitions. [2023-11-12 02:12:31,280 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 261.3333333333333) internal successors, (1568), 6 states have internal predecessors, (1568), 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) [2023-11-12 02:12:31,289 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 619.0) internal successors, (4333), 7 states have internal predecessors, (4333), 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) [2023-11-12 02:12:31,293 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 619.0) internal successors, (4333), 7 states have internal predecessors, (4333), 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) [2023-11-12 02:12:31,293 INFO L175 Difference]: Start difference. First operand has 58 places, 61 transitions, 176 flow. Second operand 6 states and 1568 transitions. [2023-11-12 02:12:31,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 79 transitions, 414 flow [2023-11-12 02:12:31,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 79 transitions, 388 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:12:31,297 INFO L231 Difference]: Finished difference. Result has 64 places, 79 transitions, 337 flow [2023-11-12 02:12:31,297 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=619, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=337, PETRI_PLACES=64, PETRI_TRANSITIONS=79} [2023-11-12 02:12:31,298 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -11 predicate places. [2023-11-12 02:12:31,298 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 79 transitions, 337 flow [2023-11-12 02:12:31,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 248.14285714285714) internal successors, (1737), 7 states have internal predecessors, (1737), 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) [2023-11-12 02:12:31,300 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:12:31,300 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-11-12 02:12:31,311 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efb18647-6002-47ad-b3fe-0806076acd8f/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-12 02:12:31,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efb18647-6002-47ad-b3fe-0806076acd8f/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:12:31,506 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2023-11-12 02:12:31,506 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:12:31,506 INFO L85 PathProgramCache]: Analyzing trace with hash -2064617473, now seen corresponding path program 2 times [2023-11-12 02:12:31,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:12:31,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892889539] [2023-11-12 02:12:31,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:31,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:12:31,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:31,662 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:12:31,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:12:31,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892889539] [2023-11-12 02:12:31,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892889539] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:12:31,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [15243758] [2023-11-12 02:12:31,664 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-12 02:12:31,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:12:31,664 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efb18647-6002-47ad-b3fe-0806076acd8f/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:12:31,665 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efb18647-6002-47ad-b3fe-0806076acd8f/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:12:31,670 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efb18647-6002-47ad-b3fe-0806076acd8f/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-12 02:12:31,837 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-12 02:12:31,838 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-12 02:12:31,839 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-12 02:12:31,841 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:12:31,860 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-12 02:12:31,860 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:12:31,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [15243758] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:12:31,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 02:12:31,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-11-12 02:12:31,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881089443] [2023-11-12 02:12:31,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:12:31,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:12:31,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:12:31,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:12:31,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:12:31,915 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 253 out of 619 [2023-11-12 02:12:31,916 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 79 transitions, 337 flow. Second operand has 3 states, 3 states have (on average 254.0) internal successors, (762), 3 states have internal predecessors, (762), 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) [2023-11-12 02:12:31,917 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:12:31,917 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 253 of 619 [2023-11-12 02:12:31,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand