./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-bad-commit-2.wvr-bad.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9bd2c7ff 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_f1ff96b9-bf87-4cf8-8c64-9dd4e5a8d78b/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ff96b9-bf87-4cf8-8c64-9dd4e5a8d78b/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ff96b9-bf87-4cf8-8c64-9dd4e5a8d78b/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ff96b9-bf87-4cf8-8c64-9dd4e5a8d78b/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-bad-commit-2.wvr-bad.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ff96b9-bf87-4cf8-8c64-9dd4e5a8d78b/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ff96b9-bf87-4cf8-8c64-9dd4e5a8d78b/bin/uautomizer-verify-uCwYo4JHxu --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 5bf746ef76f8c8352051d8eb5f02d7a475e14d238622e290fcb51135a3348206 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:57:58,746 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:57:58,822 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ff96b9-bf87-4cf8-8c64-9dd4e5a8d78b/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-19 07:57:58,829 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:57:58,829 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:57:58,857 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:57:58,858 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:57:58,858 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:57:58,859 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:57:58,860 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:57:58,861 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:57:58,861 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:57:58,862 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:57:58,862 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:57:58,863 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:57:58,864 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:57:58,864 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:57:58,864 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:57:58,865 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:57:58,865 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:57:58,866 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:57:58,866 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:57:58,867 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 07:57:58,867 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:57:58,868 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:57:58,868 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:57:58,869 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:57:58,869 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:57:58,869 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:57:58,870 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:57:58,870 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:57:58,871 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:57:58,871 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:57:58,871 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:57:58,872 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:57:58,872 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:57:58,872 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:57:58,872 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:57:58,872 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:57:58,873 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:57:58,873 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:57:58,873 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_f1ff96b9-bf87-4cf8-8c64-9dd4e5a8d78b/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ff96b9-bf87-4cf8-8c64-9dd4e5a8d78b/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5bf746ef76f8c8352051d8eb5f02d7a475e14d238622e290fcb51135a3348206 [2023-11-19 07:57:59,161 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:57:59,201 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:57:59,204 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:57:59,206 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:57:59,207 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:57:59,208 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ff96b9-bf87-4cf8-8c64-9dd4e5a8d78b/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/weaver/popl20-bad-commit-2.wvr-bad.c [2023-11-19 07:58:02,659 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:58:02,944 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:58:02,946 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ff96b9-bf87-4cf8-8c64-9dd4e5a8d78b/sv-benchmarks/c/weaver/popl20-bad-commit-2.wvr-bad.c [2023-11-19 07:58:02,961 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ff96b9-bf87-4cf8-8c64-9dd4e5a8d78b/bin/uautomizer-verify-uCwYo4JHxu/data/701fa3af5/5d5b9f1c38ba45ffb9bdb9b2452804e5/FLAG197836df2 [2023-11-19 07:58:02,983 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ff96b9-bf87-4cf8-8c64-9dd4e5a8d78b/bin/uautomizer-verify-uCwYo4JHxu/data/701fa3af5/5d5b9f1c38ba45ffb9bdb9b2452804e5 [2023-11-19 07:58:02,993 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:58:02,996 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:58:02,998 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:58:02,999 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:58:03,004 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:58:03,005 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:58:02" (1/1) ... [2023-11-19 07:58:03,006 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45f0b159 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:03, skipping insertion in model container [2023-11-19 07:58:03,006 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:58:02" (1/1) ... [2023-11-19 07:58:03,056 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:58:03,367 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:58:03,383 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:58:03,435 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:58:03,446 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:58:03,446 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:58:03,454 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:58:03,455 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:03 WrapperNode [2023-11-19 07:58:03,455 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:58:03,456 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:58:03,457 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:58:03,457 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:58:03,465 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:03" (1/1) ... [2023-11-19 07:58:03,486 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:03" (1/1) ... [2023-11-19 07:58:03,545 INFO L138 Inliner]: procedures = 26, calls = 94, calls flagged for inlining = 28, calls inlined = 34, statements flattened = 515 [2023-11-19 07:58:03,547 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:58:03,548 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:58:03,548 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:58:03,549 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:58:03,558 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:03" (1/1) ... [2023-11-19 07:58:03,558 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:03" (1/1) ... [2023-11-19 07:58:03,565 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:03" (1/1) ... [2023-11-19 07:58:03,566 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:03" (1/1) ... [2023-11-19 07:58:03,584 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:03" (1/1) ... [2023-11-19 07:58:03,591 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:03" (1/1) ... [2023-11-19 07:58:03,595 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:03" (1/1) ... [2023-11-19 07:58:03,598 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:03" (1/1) ... [2023-11-19 07:58:03,605 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:58:03,606 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:58:03,606 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:58:03,606 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:58:03,607 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:03" (1/1) ... [2023-11-19 07:58:03,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:58:03,629 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ff96b9-bf87-4cf8-8c64-9dd4e5a8d78b/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:58:03,648 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ff96b9-bf87-4cf8-8c64-9dd4e5a8d78b/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:58:03,681 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ff96b9-bf87-4cf8-8c64-9dd4e5a8d78b/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:58:03,712 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:58:03,713 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:58:03,713 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:58:03,713 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:58:03,713 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-19 07:58:03,714 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-19 07:58:03,714 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-19 07:58:03,714 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-19 07:58:03,714 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-19 07:58:03,714 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-19 07:58:03,715 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-11-19 07:58:03,715 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-11-19 07:58:03,715 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:58:03,715 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-19 07:58:03,715 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-19 07:58:03,716 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 07:58:03,716 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:58:03,716 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:58:03,716 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:58:03,718 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 07:58:03,857 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:58:03,867 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:58:04,699 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:58:05,027 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:58:05,027 INFO L302 CfgBuilder]: Removed 8 assume(true) statements. [2023-11-19 07:58:05,033 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:58:05 BoogieIcfgContainer [2023-11-19 07:58:05,033 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:58:05,036 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:58:05,036 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:58:05,040 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:58:05,040 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:58:02" (1/3) ... [2023-11-19 07:58:05,041 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@358994b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:58:05, skipping insertion in model container [2023-11-19 07:58:05,041 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:03" (2/3) ... [2023-11-19 07:58:05,042 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@358994b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:58:05, skipping insertion in model container [2023-11-19 07:58:05,042 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:58:05" (3/3) ... [2023-11-19 07:58:05,043 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-commit-2.wvr-bad.c [2023-11-19 07:58:05,053 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 07:58:05,061 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:58:05,062 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2023-11-19 07:58:05,062 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:58:05,184 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-19 07:58:05,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 392 places, 416 transitions, 860 flow [2023-11-19 07:58:05,422 INFO L124 PetriNetUnfolderBase]: 37/412 cut-off events. [2023-11-19 07:58:05,422 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-19 07:58:05,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 429 conditions, 412 events. 37/412 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 414 event pairs, 0 based on Foata normal form. 0/343 useless extension candidates. Maximal degree in co-relation 361. Up to 8 conditions per place. [2023-11-19 07:58:05,434 INFO L82 GeneralOperation]: Start removeDead. Operand has 392 places, 416 transitions, 860 flow [2023-11-19 07:58:05,451 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 363 places, 386 transitions, 793 flow [2023-11-19 07:58:05,455 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:58:05,478 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 363 places, 386 transitions, 793 flow [2023-11-19 07:58:05,483 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 363 places, 386 transitions, 793 flow [2023-11-19 07:58:05,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 363 places, 386 transitions, 793 flow [2023-11-19 07:58:05,613 INFO L124 PetriNetUnfolderBase]: 36/386 cut-off events. [2023-11-19 07:58:05,613 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-19 07:58:05,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 402 conditions, 386 events. 36/386 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 412 event pairs, 0 based on Foata normal form. 0/318 useless extension candidates. Maximal degree in co-relation 361. Up to 8 conditions per place. [2023-11-19 07:58:05,628 INFO L119 LiptonReduction]: Number of co-enabled transitions 9264 [2023-11-19 07:58:27,380 INFO L134 LiptonReduction]: Checked pairs total: 11061 [2023-11-19 07:58:27,380 INFO L136 LiptonReduction]: Total number of compositions: 460 [2023-11-19 07:58:27,397 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:58:27,405 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;@5d4fcd69, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:58:27,405 INFO L358 AbstractCegarLoop]: Starting to check reachability of 60 error locations. [2023-11-19 07:58:27,410 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:58:27,410 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-11-19 07:58:27,410 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:58:27,410 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:58:27,411 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-19 07:58:27,412 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-19 07:58:27,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:27,417 INFO L85 PathProgramCache]: Analyzing trace with hash 68294, now seen corresponding path program 1 times [2023-11-19 07:58:27,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:58:27,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322198870] [2023-11-19 07:58:27,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:27,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:58:27,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:27,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:58:27,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:58:27,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322198870] [2023-11-19 07:58:27,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322198870] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:58:27,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:58:27,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:58:27,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42573472] [2023-11-19 07:58:27,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:58:27,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:58:27,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:58:27,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:58:27,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:58:27,951 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 334 out of 876 [2023-11-19 07:58:27,957 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 63 transitions, 147 flow. Second operand has 3 states, 3 states have (on average 334.6666666666667) internal successors, (1004), 3 states have internal predecessors, (1004), 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) [2023-11-19 07:58:27,957 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:58:27,957 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 334 of 876 [2023-11-19 07:58:27,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:58:30,128 INFO L124 PetriNetUnfolderBase]: 4957/6494 cut-off events. [2023-11-19 07:58:30,129 INFO L125 PetriNetUnfolderBase]: For 283/283 co-relation queries the response was YES. [2023-11-19 07:58:30,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13416 conditions, 6494 events. 4957/6494 cut-off events. For 283/283 co-relation queries the response was YES. Maximal size of possible extension queue 451. Compared 26264 event pairs, 3757 based on Foata normal form. 0/2218 useless extension candidates. Maximal degree in co-relation 12048. Up to 6483 conditions per place. [2023-11-19 07:58:30,193 INFO L140 encePairwiseOnDemand]: 858/876 looper letters, 45 selfloop transitions, 2 changer transitions 0/47 dead transitions. [2023-11-19 07:58:30,193 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 47 transitions, 209 flow [2023-11-19 07:58:30,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:58:30,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:58:30,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1065 transitions. [2023-11-19 07:58:30,213 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4052511415525114 [2023-11-19 07:58:30,214 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1065 transitions. [2023-11-19 07:58:30,214 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1065 transitions. [2023-11-19 07:58:30,217 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:58:30,220 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1065 transitions. [2023-11-19 07:58:30,226 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 355.0) internal successors, (1065), 3 states have internal predecessors, (1065), 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) [2023-11-19 07:58:30,237 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 876.0) internal successors, (3504), 4 states have internal predecessors, (3504), 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) [2023-11-19 07:58:30,240 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 876.0) internal successors, (3504), 4 states have internal predecessors, (3504), 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) [2023-11-19 07:58:30,242 INFO L175 Difference]: Start difference. First operand has 68 places, 63 transitions, 147 flow. Second operand 3 states and 1065 transitions. [2023-11-19 07:58:30,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 47 transitions, 209 flow [2023-11-19 07:58:30,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 47 transitions, 196 flow, removed 0 selfloop flow, removed 7 redundant places. [2023-11-19 07:58:30,252 INFO L231 Difference]: Finished difference. Result has 47 places, 47 transitions, 106 flow [2023-11-19 07:58:30,254 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=876, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=47, PETRI_TRANSITIONS=47} [2023-11-19 07:58:30,258 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -21 predicate places. [2023-11-19 07:58:30,258 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 47 transitions, 106 flow [2023-11-19 07:58:30,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 334.6666666666667) internal successors, (1004), 3 states have internal predecessors, (1004), 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) [2023-11-19 07:58:30,259 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:58:30,260 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-19 07:58:30,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:58:30,260 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-19 07:58:30,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:30,261 INFO L85 PathProgramCache]: Analyzing trace with hash 68323, now seen corresponding path program 1 times [2023-11-19 07:58:30,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:58:30,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820814766] [2023-11-19 07:58:30,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:30,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:58:30,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:30,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:58:30,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:58:30,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820814766] [2023-11-19 07:58:30,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820814766] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:58:30,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:58:30,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:58:30,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780628025] [2023-11-19 07:58:30,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:58:30,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:58:30,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:58:30,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:58:30,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:58:30,483 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 334 out of 876 [2023-11-19 07:58:30,485 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 47 transitions, 106 flow. Second operand has 3 states, 3 states have (on average 334.6666666666667) internal successors, (1004), 3 states have internal predecessors, (1004), 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) [2023-11-19 07:58:30,485 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:58:30,486 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 334 of 876 [2023-11-19 07:58:30,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:58:32,152 INFO L124 PetriNetUnfolderBase]: 4961/6502 cut-off events. [2023-11-19 07:58:32,152 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-11-19 07:58:32,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13307 conditions, 6502 events. 4961/6502 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 451. Compared 26305 event pairs, 3757 based on Foata normal form. 0/2224 useless extension candidates. Maximal degree in co-relation 13259. Up to 6496 conditions per place. [2023-11-19 07:58:32,203 INFO L140 encePairwiseOnDemand]: 863/876 looper letters, 46 selfloop transitions, 9 changer transitions 0/55 dead transitions. [2023-11-19 07:58:32,204 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 55 transitions, 234 flow [2023-11-19 07:58:32,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:58:32,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:58:32,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1061 transitions. [2023-11-19 07:58:32,209 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4037290715372907 [2023-11-19 07:58:32,210 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1061 transitions. [2023-11-19 07:58:32,210 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1061 transitions. [2023-11-19 07:58:32,211 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:58:32,211 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1061 transitions. [2023-11-19 07:58:32,214 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 353.6666666666667) internal successors, (1061), 3 states have internal predecessors, (1061), 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) [2023-11-19 07:58:32,221 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 876.0) internal successors, (3504), 4 states have internal predecessors, (3504), 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) [2023-11-19 07:58:32,224 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 876.0) internal successors, (3504), 4 states have internal predecessors, (3504), 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) [2023-11-19 07:58:32,225 INFO L175 Difference]: Start difference. First operand has 47 places, 47 transitions, 106 flow. Second operand 3 states and 1061 transitions. [2023-11-19 07:58:32,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 55 transitions, 234 flow [2023-11-19 07:58:32,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 55 transitions, 228 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:58:32,228 INFO L231 Difference]: Finished difference. Result has 49 places, 55 transitions, 178 flow [2023-11-19 07:58:32,228 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=876, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=178, PETRI_PLACES=49, PETRI_TRANSITIONS=55} [2023-11-19 07:58:32,229 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -19 predicate places. [2023-11-19 07:58:32,229 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 55 transitions, 178 flow [2023-11-19 07:58:32,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 334.6666666666667) internal successors, (1004), 3 states have internal predecessors, (1004), 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) [2023-11-19 07:58:32,231 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:58:32,231 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-19 07:58:32,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:58:32,232 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-19 07:58:32,232 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:32,232 INFO L85 PathProgramCache]: Analyzing trace with hash 2121050, now seen corresponding path program 1 times [2023-11-19 07:58:32,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:58:32,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338006152] [2023-11-19 07:58:32,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:32,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:58:32,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:32,310 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:58:32,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:58:32,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338006152] [2023-11-19 07:58:32,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338006152] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:58:32,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [396399783] [2023-11-19 07:58:32,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:32,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:58:32,312 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ff96b9-bf87-4cf8-8c64-9dd4e5a8d78b/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:58:32,314 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ff96b9-bf87-4cf8-8c64-9dd4e5a8d78b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:58:32,322 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ff96b9-bf87-4cf8-8c64-9dd4e5a8d78b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:58:32,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:32,444 INFO L262 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:58:32,449 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:58:32,493 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:58:32,494 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:58:32,511 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:58:32,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [396399783] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:58:32,512 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:58:32,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2023-11-19 07:58:32,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356636175] [2023-11-19 07:58:32,513 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:58:32,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:58:32,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:58:32,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:58:32,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:58:32,640 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 334 out of 876 [2023-11-19 07:58:32,643 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 55 transitions, 178 flow. Second operand has 6 states, 6 states have (on average 335.0) internal successors, (2010), 6 states have internal predecessors, (2010), 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) [2023-11-19 07:58:32,644 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:58:32,644 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 334 of 876 [2023-11-19 07:58:32,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:58:34,741 INFO L124 PetriNetUnfolderBase]: 4973/6526 cut-off events. [2023-11-19 07:58:34,742 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-11-19 07:58:34,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13416 conditions, 6526 events. 4973/6526 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 451. Compared 26431 event pairs, 3757 based on Foata normal form. 0/2249 useless extension candidates. Maximal degree in co-relation 13259. Up to 6499 conditions per place. [2023-11-19 07:58:34,787 INFO L140 encePairwiseOnDemand]: 863/876 looper letters, 46 selfloop transitions, 33 changer transitions 0/79 dead transitions. [2023-11-19 07:58:34,788 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 79 transitions, 450 flow [2023-11-19 07:58:34,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:58:34,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:58:34,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2095 transitions. [2023-11-19 07:58:34,797 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3985920852359209 [2023-11-19 07:58:34,797 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2095 transitions. [2023-11-19 07:58:34,797 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2095 transitions. [2023-11-19 07:58:34,799 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:58:34,799 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2095 transitions. [2023-11-19 07:58:34,806 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 349.1666666666667) internal successors, (2095), 6 states have internal predecessors, (2095), 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) [2023-11-19 07:58:34,819 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 876.0) internal successors, (6132), 7 states have internal predecessors, (6132), 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) [2023-11-19 07:58:34,823 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 876.0) internal successors, (6132), 7 states have internal predecessors, (6132), 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) [2023-11-19 07:58:34,824 INFO L175 Difference]: Start difference. First operand has 49 places, 55 transitions, 178 flow. Second operand 6 states and 2095 transitions. [2023-11-19 07:58:34,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 79 transitions, 450 flow [2023-11-19 07:58:34,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 79 transitions, 414 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:58:34,831 INFO L231 Difference]: Finished difference. Result has 55 places, 79 transitions, 392 flow [2023-11-19 07:58:34,831 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=876, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=392, PETRI_PLACES=55, PETRI_TRANSITIONS=79} [2023-11-19 07:58:34,833 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -13 predicate places. [2023-11-19 07:58:34,834 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 79 transitions, 392 flow [2023-11-19 07:58:34,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 335.0) internal successors, (2010), 6 states have internal predecessors, (2010), 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) [2023-11-19 07:58:34,836 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:58:34,836 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-11-19 07:58:34,873 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ff96b9-bf87-4cf8-8c64-9dd4e5a8d78b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 07:58:35,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ff96b9-bf87-4cf8-8c64-9dd4e5a8d78b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:58:35,053 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-19 07:58:35,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:35,053 INFO L85 PathProgramCache]: Analyzing trace with hash -1233293149, now seen corresponding path program 2 times [2023-11-19 07:58:35,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:58:35,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105830941] [2023-11-19 07:58:35,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:35,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:58:35,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:35,190 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:58:35,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:58:35,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105830941] [2023-11-19 07:58:35,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105830941] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:58:35,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1426718272] [2023-11-19 07:58:35,192 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 07:58:35,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:58:35,192 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ff96b9-bf87-4cf8-8c64-9dd4e5a8d78b/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:58:35,194 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ff96b9-bf87-4cf8-8c64-9dd4e5a8d78b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:58:35,217 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ff96b9-bf87-4cf8-8c64-9dd4e5a8d78b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 07:58:35,317 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-19 07:58:35,317 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:58:35,318 INFO L262 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:58:35,320 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:58:35,339 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-19 07:58:35,339 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:58:35,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1426718272] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:58:35,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:58:35,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-11-19 07:58:35,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640449437] [2023-11-19 07:58:35,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:58:35,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:58:35,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:58:35,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:58:35,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:58:35,410 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 342 out of 876 [2023-11-19 07:58:35,412 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 79 transitions, 392 flow. Second operand has 3 states, 3 states have (on average 343.0) internal successors, (1029), 3 states have internal predecessors, (1029), 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) [2023-11-19 07:58:35,412 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:58:35,412 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 342 of 876 [2023-11-19 07:58:35,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:58:37,148 INFO L124 PetriNetUnfolderBase]: 4973/6522 cut-off events. [2023-11-19 07:58:37,148 INFO L125 PetriNetUnfolderBase]: For 55/55 co-relation queries the response was YES. [2023-11-19 07:58:37,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13451 conditions, 6522 events. 4973/6522 cut-off events. For 55/55 co-relation queries the response was YES. Maximal size of possible extension queue 451. Compared 26274 event pairs, 3757 based on Foata normal form. 4/2250 useless extension candidates. Maximal degree in co-relation 13352. Up to 6487 conditions per place. [2023-11-19 07:58:37,194 INFO L140 encePairwiseOnDemand]: 870/876 looper letters, 69 selfloop transitions, 6 changer transitions 0/75 dead transitions. [2023-11-19 07:58:37,194 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 75 transitions, 502 flow [2023-11-19 07:58:37,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:58:37,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:58:37,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1073 transitions. [2023-11-19 07:58:37,201 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4082952815829528 [2023-11-19 07:58:37,201 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1073 transitions. [2023-11-19 07:58:37,201 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1073 transitions. [2023-11-19 07:58:37,202 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:58:37,203 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1073 transitions. [2023-11-19 07:58:37,207 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 357.6666666666667) internal successors, (1073), 3 states have internal predecessors, (1073), 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) [2023-11-19 07:58:37,214 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 876.0) internal successors, (3504), 4 states have internal predecessors, (3504), 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) [2023-11-19 07:58:37,217 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 876.0) internal successors, (3504), 4 states have internal predecessors, (3504), 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) [2023-11-19 07:58:37,218 INFO L175 Difference]: Start difference. First operand has 55 places, 79 transitions, 392 flow. Second operand 3 states and 1073 transitions. [2023-11-19 07:58:37,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 75 transitions, 502 flow [2023-11-19 07:58:37,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 75 transitions, 390 flow, removed 20 selfloop flow, removed 5 redundant places. [2023-11-19 07:58:37,223 INFO L231 Difference]: Finished difference. Result has 48 places, 75 transitions, 252 flow [2023-11-19 07:58:37,224 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=876, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=252, PETRI_PLACES=48, PETRI_TRANSITIONS=75} [2023-11-19 07:58:37,225 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -20 predicate places. [2023-11-19 07:58:37,225 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 75 transitions, 252 flow [2023-11-19 07:58:37,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 343.0) internal successors, (1029), 3 states have internal predecessors, (1029), 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) [2023-11-19 07:58:37,226 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:58:37,226 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:58:37,254 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ff96b9-bf87-4cf8-8c64-9dd4e5a8d78b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 07:58:37,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ff96b9-bf87-4cf8-8c64-9dd4e5a8d78b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:58:37,449 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-19 07:58:37,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:37,449 INFO L85 PathProgramCache]: Analyzing trace with hash 1250104459, now seen corresponding path program 1 times [2023-11-19 07:58:37,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:58:37,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723289890] [2023-11-19 07:58:37,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:37,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:58:37,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:37,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:58:37,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:58:37,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723289890] [2023-11-19 07:58:37,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723289890] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:58:37,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:58:37,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:58:37,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898310973] [2023-11-19 07:58:37,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:58:37,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:58:37,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:58:37,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:58:37,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:58:37,624 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 346 out of 876 [2023-11-19 07:58:37,626 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 75 transitions, 252 flow. Second operand has 3 states, 3 states have (on average 348.3333333333333) internal successors, (1045), 3 states have internal predecessors, (1045), 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) [2023-11-19 07:58:37,626 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:58:37,626 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 346 of 876 [2023-11-19 07:58:37,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:58:39,675 INFO L124 PetriNetUnfolderBase]: 6723/8780 cut-off events. [2023-11-19 07:58:39,675 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-11-19 07:58:39,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17982 conditions, 8780 events. 6723/8780 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 542. Compared 39715 event pairs, 1517 based on Foata normal form. 0/3131 useless extension candidates. Maximal degree in co-relation 17849. Up to 5919 conditions per place. [2023-11-19 07:58:39,726 INFO L140 encePairwiseOnDemand]: 868/876 looper letters, 100 selfloop transitions, 3 changer transitions 0/103 dead transitions. [2023-11-19 07:58:39,726 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 103 transitions, 521 flow [2023-11-19 07:58:39,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:58:39,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:58:39,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1114 transitions. [2023-11-19 07:58:39,731 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.423896499238965 [2023-11-19 07:58:39,732 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1114 transitions. [2023-11-19 07:58:39,732 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1114 transitions. [2023-11-19 07:58:39,733 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:58:39,733 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1114 transitions. [2023-11-19 07:58:39,736 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 371.3333333333333) internal successors, (1114), 3 states have internal predecessors, (1114), 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) [2023-11-19 07:58:39,743 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 876.0) internal successors, (3504), 4 states have internal predecessors, (3504), 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) [2023-11-19 07:58:39,746 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 876.0) internal successors, (3504), 4 states have internal predecessors, (3504), 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) [2023-11-19 07:58:39,746 INFO L175 Difference]: Start difference. First operand has 48 places, 75 transitions, 252 flow. Second operand 3 states and 1114 transitions. [2023-11-19 07:58:39,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 103 transitions, 521 flow [2023-11-19 07:58:39,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 103 transitions, 509 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:58:39,750 INFO L231 Difference]: Finished difference. Result has 50 places, 77 transitions, 270 flow [2023-11-19 07:58:39,751 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=876, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=270, PETRI_PLACES=50, PETRI_TRANSITIONS=77} [2023-11-19 07:58:39,752 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -18 predicate places. [2023-11-19 07:58:39,752 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 77 transitions, 270 flow [2023-11-19 07:58:39,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 348.3333333333333) internal successors, (1045), 3 states have internal predecessors, (1045), 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) [2023-11-19 07:58:39,753 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:58:39,753 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:58:39,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 07:58:39,754 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-19 07:58:39,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:39,754 INFO L85 PathProgramCache]: Analyzing trace with hash 98535890, now seen corresponding path program 1 times [2023-11-19 07:58:39,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:58:39,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464717380] [2023-11-19 07:58:39,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:39,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:58:39,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:40,131 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:58:40,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:58:40,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464717380] [2023-11-19 07:58:40,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464717380] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:58:40,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [887595531] [2023-11-19 07:58:40,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:40,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:58:40,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ff96b9-bf87-4cf8-8c64-9dd4e5a8d78b/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:58:40,137 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ff96b9-bf87-4cf8-8c64-9dd4e5a8d78b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:58:40,141 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ff96b9-bf87-4cf8-8c64-9dd4e5a8d78b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 07:58:40,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:40,289 INFO L262 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 07:58:40,291 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:58:40,321 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:58:40,321 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:58:40,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [887595531] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:58:40,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:58:40,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 4 [2023-11-19 07:58:40,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30417521] [2023-11-19 07:58:40,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:58:40,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:58:40,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:58:40,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:58:40,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:58:40,481 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 328 out of 876 [2023-11-19 07:58:40,483 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 77 transitions, 270 flow. Second operand has 4 states, 4 states have (on average 330.0) internal successors, (1320), 4 states have internal predecessors, (1320), 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) [2023-11-19 07:58:40,483 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:58:40,483 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 328 of 876 [2023-11-19 07:58:40,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:58:43,187 INFO L124 PetriNetUnfolderBase]: 8945/11734 cut-off events. [2023-11-19 07:58:43,187 INFO L125 PetriNetUnfolderBase]: For 2110/2110 co-relation queries the response was YES. [2023-11-19 07:58:43,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26422 conditions, 11734 events. 8945/11734 cut-off events. For 2110/2110 co-relation queries the response was YES. Maximal size of possible extension queue 612. Compared 50705 event pairs, 6511 based on Foata normal form. 160/5441 useless extension candidates. Maximal degree in co-relation 19719. Up to 8779 conditions per place. [2023-11-19 07:58:43,347 INFO L140 encePairwiseOnDemand]: 861/876 looper letters, 121 selfloop transitions, 15 changer transitions 0/136 dead transitions. [2023-11-19 07:58:43,348 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 136 transitions, 740 flow [2023-11-19 07:58:43,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:58:43,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:58:43,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1731 transitions. [2023-11-19 07:58:43,355 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3952054794520548 [2023-11-19 07:58:43,355 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1731 transitions. [2023-11-19 07:58:43,355 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1731 transitions. [2023-11-19 07:58:43,357 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:58:43,357 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1731 transitions. [2023-11-19 07:58:43,362 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 346.2) internal successors, (1731), 5 states have internal predecessors, (1731), 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) [2023-11-19 07:58:43,371 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 876.0) internal successors, (5256), 6 states have internal predecessors, (5256), 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) [2023-11-19 07:58:43,373 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 876.0) internal successors, (5256), 6 states have internal predecessors, (5256), 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) [2023-11-19 07:58:43,373 INFO L175 Difference]: Start difference. First operand has 50 places, 77 transitions, 270 flow. Second operand 5 states and 1731 transitions. [2023-11-19 07:58:43,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 136 transitions, 740 flow [2023-11-19 07:58:43,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 136 transitions, 732 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:58:43,380 INFO L231 Difference]: Finished difference. Result has 54 places, 89 transitions, 405 flow [2023-11-19 07:58:43,381 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=876, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=405, PETRI_PLACES=54, PETRI_TRANSITIONS=89} [2023-11-19 07:58:43,385 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -14 predicate places. [2023-11-19 07:58:43,385 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 89 transitions, 405 flow [2023-11-19 07:58:43,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 330.0) internal successors, (1320), 4 states have internal predecessors, (1320), 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) [2023-11-19 07:58:43,386 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:58:43,386 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:58:43,412 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ff96b9-bf87-4cf8-8c64-9dd4e5a8d78b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 07:58:43,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ff96b9-bf87-4cf8-8c64-9dd4e5a8d78b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-19 07:58:43,601 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-19 07:58:43,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:43,601 INFO L85 PathProgramCache]: Analyzing trace with hash 98535820, now seen corresponding path program 1 times [2023-11-19 07:58:43,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:58:43,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447580327] [2023-11-19 07:58:43,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:43,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:58:43,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:43,866 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:58:43,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:58:43,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447580327] [2023-11-19 07:58:43,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447580327] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:58:43,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1217025514] [2023-11-19 07:58:43,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:43,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:58:43,867 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ff96b9-bf87-4cf8-8c64-9dd4e5a8d78b/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:58:43,868 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ff96b9-bf87-4cf8-8c64-9dd4e5a8d78b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:58:43,888 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ff96b9-bf87-4cf8-8c64-9dd4e5a8d78b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 07:58:44,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:44,023 INFO L262 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 07:58:44,024 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:58:44,056 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:58:44,056 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:58:44,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1217025514] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:58:44,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:58:44,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [2] total 5 [2023-11-19 07:58:44,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161906785] [2023-11-19 07:58:44,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:58:44,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:58:44,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:58:44,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:58:44,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:58:44,207 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 328 out of 876 [2023-11-19 07:58:44,209 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 89 transitions, 405 flow. Second operand has 4 states, 4 states have (on average 330.0) internal successors, (1320), 4 states have internal predecessors, (1320), 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) [2023-11-19 07:58:44,209 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:58:44,209 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 328 of 876 [2023-11-19 07:58:44,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:58:48,311 INFO L124 PetriNetUnfolderBase]: 14933/19602 cut-off events. [2023-11-19 07:58:48,311 INFO L125 PetriNetUnfolderBase]: For 4260/4260 co-relation queries the response was YES. [2023-11-19 07:58:48,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47008 conditions, 19602 events. 14933/19602 cut-off events. For 4260/4260 co-relation queries the response was YES. Maximal size of possible extension queue 898. Compared 91189 event pairs, 10685 based on Foata normal form. 0/11550 useless extension candidates. Maximal degree in co-relation 36576. Up to 11702 conditions per place. [2023-11-19 07:58:48,437 INFO L140 encePairwiseOnDemand]: 865/876 looper letters, 111 selfloop transitions, 24 changer transitions 0/135 dead transitions. [2023-11-19 07:58:48,437 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 135 transitions, 841 flow [2023-11-19 07:58:48,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:58:48,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:58:48,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1727 transitions. [2023-11-19 07:58:48,445 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39429223744292236 [2023-11-19 07:58:48,445 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1727 transitions. [2023-11-19 07:58:48,445 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1727 transitions. [2023-11-19 07:58:48,447 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:58:48,447 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1727 transitions. [2023-11-19 07:58:48,453 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 345.4) internal successors, (1727), 5 states have internal predecessors, (1727), 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) [2023-11-19 07:58:48,462 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 876.0) internal successors, (5256), 6 states have internal predecessors, (5256), 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) [2023-11-19 07:58:48,464 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 876.0) internal successors, (5256), 6 states have internal predecessors, (5256), 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) [2023-11-19 07:58:48,464 INFO L175 Difference]: Start difference. First operand has 54 places, 89 transitions, 405 flow. Second operand 5 states and 1727 transitions. [2023-11-19 07:58:48,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 135 transitions, 841 flow [2023-11-19 07:58:48,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 135 transitions, 835 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-11-19 07:58:48,474 INFO L231 Difference]: Finished difference. Result has 59 places, 93 transitions, 520 flow [2023-11-19 07:58:48,474 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=876, PETRI_DIFFERENCE_MINUEND_FLOW=399, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=520, PETRI_PLACES=59, PETRI_TRANSITIONS=93} [2023-11-19 07:58:48,475 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -9 predicate places. [2023-11-19 07:58:48,475 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 93 transitions, 520 flow [2023-11-19 07:58:48,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 330.0) internal successors, (1320), 4 states have internal predecessors, (1320), 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) [2023-11-19 07:58:48,476 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:58:48,476 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:58:48,504 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ff96b9-bf87-4cf8-8c64-9dd4e5a8d78b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-19 07:58:48,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ff96b9-bf87-4cf8-8c64-9dd4e5a8d78b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-19 07:58:48,701 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-19 07:58:48,701 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:48,701 INFO L85 PathProgramCache]: Analyzing trace with hash 98535932, now seen corresponding path program 1 times [2023-11-19 07:58:48,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:58:48,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829820375] [2023-11-19 07:58:48,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:48,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:58:48,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:48,911 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:58:48,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:58:48,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829820375] [2023-11-19 07:58:48,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829820375] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:58:48,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1376882137] [2023-11-19 07:58:48,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:48,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:58:48,912 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ff96b9-bf87-4cf8-8c64-9dd4e5a8d78b/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:58:48,913 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ff96b9-bf87-4cf8-8c64-9dd4e5a8d78b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:58:48,916 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ff96b9-bf87-4cf8-8c64-9dd4e5a8d78b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 07:58:49,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:49,070 INFO L262 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:58:49,072 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:58:49,087 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:58:49,088 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:58:49,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1376882137] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:58:49,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:58:49,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 4 [2023-11-19 07:58:49,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155196437] [2023-11-19 07:58:49,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:58:49,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:58:49,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:58:49,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:58:49,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:58:49,096 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 352 out of 876 [2023-11-19 07:58:49,097 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 93 transitions, 520 flow. Second operand has 3 states, 3 states have (on average 354.6666666666667) internal successors, (1064), 3 states have internal predecessors, (1064), 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) [2023-11-19 07:58:49,097 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:58:49,098 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 352 of 876 [2023-11-19 07:58:49,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand