./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-more-mts.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493db695-de81-409a-9677-d5eb08736d11/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493db695-de81-409a-9677-d5eb08736d11/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493db695-de81-409a-9677-d5eb08736d11/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493db695-de81-409a-9677-d5eb08736d11/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-mts.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493db695-de81-409a-9677-d5eb08736d11/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493db695-de81-409a-9677-d5eb08736d11/bin/uautomizer-verify-BQ2R08f2Ya --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash cc67bee348fb2ffff05c0616660a93fb872177c05d08813d910a29641aea282e --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 01:18:45,574 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 01:18:45,635 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493db695-de81-409a-9677-d5eb08736d11/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-29 01:18:45,639 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 01:18:45,639 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 01:18:45,662 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 01:18:45,663 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 01:18:45,663 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 01:18:45,664 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 01:18:45,664 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 01:18:45,665 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 01:18:45,665 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 01:18:45,666 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 01:18:45,667 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 01:18:45,667 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 01:18:45,668 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 01:18:45,668 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 01:18:45,669 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 01:18:45,669 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 01:18:45,670 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 01:18:45,670 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 01:18:45,671 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 01:18:45,671 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 01:18:45,672 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 01:18:45,672 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-29 01:18:45,672 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 01:18:45,673 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 01:18:45,673 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 01:18:45,674 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 01:18:45,674 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 01:18:45,674 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 01:18:45,675 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 01:18:45,675 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 01:18:45,675 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:18:45,676 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 01:18:45,676 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 01:18:45,676 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 01:18:45,677 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 01:18:45,677 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 01:18:45,677 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 01:18:45,677 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 01:18:45,677 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 01:18:45,678 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 01:18:45,678 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 01:18:45,678 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_493db695-de81-409a-9677-d5eb08736d11/bin/uautomizer-verify-BQ2R08f2Ya/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493db695-de81-409a-9677-d5eb08736d11/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cc67bee348fb2ffff05c0616660a93fb872177c05d08813d910a29641aea282e [2023-11-29 01:18:45,885 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 01:18:45,907 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 01:18:45,909 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 01:18:45,911 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 01:18:45,911 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 01:18:45,912 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493db695-de81-409a-9677-d5eb08736d11/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/weaver/popl20-more-mts.wvr.c [2023-11-29 01:18:48,665 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 01:18:48,829 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 01:18:48,830 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493db695-de81-409a-9677-d5eb08736d11/sv-benchmarks/c/weaver/popl20-more-mts.wvr.c [2023-11-29 01:18:48,839 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493db695-de81-409a-9677-d5eb08736d11/bin/uautomizer-verify-BQ2R08f2Ya/data/1983e134f/9c722faf87d94bf4b931adc7b73fda3d/FLAGfbad91fd1 [2023-11-29 01:18:48,854 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493db695-de81-409a-9677-d5eb08736d11/bin/uautomizer-verify-BQ2R08f2Ya/data/1983e134f/9c722faf87d94bf4b931adc7b73fda3d [2023-11-29 01:18:48,857 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 01:18:48,858 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 01:18:48,860 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 01:18:48,860 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 01:18:48,865 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 01:18:48,866 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:18:48" (1/1) ... [2023-11-29 01:18:48,867 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5527c0ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:18:48, skipping insertion in model container [2023-11-29 01:18:48,867 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:18:48" (1/1) ... [2023-11-29 01:18:48,893 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 01:18:49,079 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:18:49,089 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 01:18:49,120 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:18:49,129 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 01:18:49,129 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 01:18:49,136 INFO L206 MainTranslator]: Completed translation [2023-11-29 01:18:49,137 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:18:49 WrapperNode [2023-11-29 01:18:49,137 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 01:18:49,138 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 01:18:49,139 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 01:18:49,139 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 01:18:49,146 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:18:49" (1/1) ... [2023-11-29 01:18:49,155 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:18:49" (1/1) ... [2023-11-29 01:18:49,188 INFO L138 Inliner]: procedures = 25, calls = 47, calls flagged for inlining = 14, calls inlined = 20, statements flattened = 314 [2023-11-29 01:18:49,188 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 01:18:49,189 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 01:18:49,189 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 01:18:49,189 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 01:18:49,200 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:18:49" (1/1) ... [2023-11-29 01:18:49,201 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:18:49" (1/1) ... [2023-11-29 01:18:49,205 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:18:49" (1/1) ... [2023-11-29 01:18:49,224 INFO L175 MemorySlicer]: Split 16 memory accesses to 5 slices as follows [2, 2, 2, 8, 2]. 50 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 4 writes are split as follows [0, 1, 1, 1, 1]. [2023-11-29 01:18:49,224 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:18:49" (1/1) ... [2023-11-29 01:18:49,224 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:18:49" (1/1) ... [2023-11-29 01:18:49,236 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:18:49" (1/1) ... [2023-11-29 01:18:49,241 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:18:49" (1/1) ... [2023-11-29 01:18:49,243 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:18:49" (1/1) ... [2023-11-29 01:18:49,246 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:18:49" (1/1) ... [2023-11-29 01:18:49,250 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 01:18:49,251 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 01:18:49,251 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 01:18:49,251 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 01:18:49,252 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:18:49" (1/1) ... [2023-11-29 01:18:49,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:18:49,269 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493db695-de81-409a-9677-d5eb08736d11/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:18:49,281 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493db695-de81-409a-9677-d5eb08736d11/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 01:18:49,284 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493db695-de81-409a-9677-d5eb08736d11/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 01:18:49,314 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 01:18:49,315 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 01:18:49,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 01:18:49,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-29 01:18:49,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-29 01:18:49,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-29 01:18:49,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-29 01:18:49,315 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-29 01:18:49,316 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-29 01:18:49,316 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-29 01:18:49,316 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-29 01:18:49,316 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-29 01:18:49,316 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-29 01:18:49,316 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-29 01:18:49,316 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-29 01:18:49,316 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-29 01:18:49,317 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-29 01:18:49,317 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-29 01:18:49,317 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 01:18:49,317 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 01:18:49,317 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 01:18:49,317 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-29 01:18:49,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-29 01:18:49,318 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-29 01:18:49,318 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-29 01:18:49,318 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-29 01:18:49,318 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 01:18:49,318 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 01:18:49,318 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 01:18:49,320 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-29 01:18:49,427 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 01:18:49,428 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 01:18:49,882 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 01:18:50,267 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 01:18:50,267 INFO L309 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-29 01:18:50,268 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:18:50 BoogieIcfgContainer [2023-11-29 01:18:50,268 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 01:18:50,271 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 01:18:50,271 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 01:18:50,274 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 01:18:50,274 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 01:18:48" (1/3) ... [2023-11-29 01:18:50,275 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d5a2bb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:18:50, skipping insertion in model container [2023-11-29 01:18:50,275 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:18:49" (2/3) ... [2023-11-29 01:18:50,275 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d5a2bb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:18:50, skipping insertion in model container [2023-11-29 01:18:50,275 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:18:50" (3/3) ... [2023-11-29 01:18:50,276 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-mts.wvr.c [2023-11-29 01:18:50,286 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-29 01:18:50,296 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 01:18:50,297 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 42 error locations. [2023-11-29 01:18:50,297 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 01:18:50,468 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-29 01:18:50,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 119 places, 120 transitions, 261 flow [2023-11-29 01:18:50,559 INFO L124 PetriNetUnfolderBase]: 11/117 cut-off events. [2023-11-29 01:18:50,559 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-29 01:18:50,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 130 conditions, 117 events. 11/117 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 452 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 96. Up to 2 conditions per place. [2023-11-29 01:18:50,564 INFO L82 GeneralOperation]: Start removeDead. Operand has 119 places, 120 transitions, 261 flow [2023-11-29 01:18:50,570 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 114 places, 114 transitions, 246 flow [2023-11-29 01:18:50,580 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 01:18:50,587 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;@739ca5b3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 01:18:50,588 INFO L358 AbstractCegarLoop]: Starting to check reachability of 81 error locations. [2023-11-29 01:18:50,591 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 01:18:50,591 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2023-11-29 01:18:50,592 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 01:18:50,592 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:18:50,592 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-29 01:18:50,593 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2023-11-29 01:18:50,598 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:18:50,598 INFO L85 PathProgramCache]: Analyzing trace with hash 978668, now seen corresponding path program 1 times [2023-11-29 01:18:50,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:18:50,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233390048] [2023-11-29 01:18:50,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:18:50,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:18:50,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:18:50,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:18:50,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:18:50,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233390048] [2023-11-29 01:18:50,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233390048] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:18:50,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:18:50,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 01:18:50,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510793813] [2023-11-29 01:18:50,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:18:50,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:18:50,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:18:50,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:18:50,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:18:50,957 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 120 [2023-11-29 01:18:50,961 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 114 transitions, 246 flow. Second operand has 4 states, 4 states have (on average 56.75) internal successors, (227), 4 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:18:50,961 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:18:50,961 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 120 [2023-11-29 01:18:50,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:18:53,202 INFO L124 PetriNetUnfolderBase]: 9801/17208 cut-off events. [2023-11-29 01:18:53,202 INFO L125 PetriNetUnfolderBase]: For 485/485 co-relation queries the response was YES. [2023-11-29 01:18:53,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30819 conditions, 17208 events. 9801/17208 cut-off events. For 485/485 co-relation queries the response was YES. Maximal size of possible extension queue 939. Compared 144681 event pairs, 7297 based on Foata normal form. 1/12677 useless extension candidates. Maximal degree in co-relation 28888. Up to 13200 conditions per place. [2023-11-29 01:18:53,330 INFO L140 encePairwiseOnDemand]: 106/120 looper letters, 52 selfloop transitions, 4 changer transitions 0/109 dead transitions. [2023-11-29 01:18:53,330 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 109 transitions, 348 flow [2023-11-29 01:18:53,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:18:53,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 01:18:53,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 290 transitions. [2023-11-29 01:18:53,342 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6041666666666666 [2023-11-29 01:18:53,343 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 290 transitions. [2023-11-29 01:18:53,343 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 290 transitions. [2023-11-29 01:18:53,344 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:18:53,346 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 290 transitions. [2023-11-29 01:18:53,349 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 72.5) internal successors, (290), 4 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:18:53,353 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 120.0) internal successors, (600), 5 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:18:53,354 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 120.0) internal successors, (600), 5 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:18:53,355 INFO L175 Difference]: Start difference. First operand has 114 places, 114 transitions, 246 flow. Second operand 4 states and 290 transitions. [2023-11-29 01:18:53,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 109 transitions, 348 flow [2023-11-29 01:18:53,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 109 transitions, 336 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-29 01:18:53,367 INFO L231 Difference]: Finished difference. Result has 105 places, 109 transitions, 247 flow [2023-11-29 01:18:53,369 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=247, PETRI_PLACES=105, PETRI_TRANSITIONS=109} [2023-11-29 01:18:53,372 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, -9 predicate places. [2023-11-29 01:18:53,372 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 109 transitions, 247 flow [2023-11-29 01:18:53,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.75) internal successors, (227), 4 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:18:53,373 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:18:53,373 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-29 01:18:53,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 01:18:53,374 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2023-11-29 01:18:53,374 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:18:53,374 INFO L85 PathProgramCache]: Analyzing trace with hash -908216175, now seen corresponding path program 1 times [2023-11-29 01:18:53,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:18:53,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046661805] [2023-11-29 01:18:53,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:18:53,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:18:53,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:18:53,492 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:18:53,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:18:53,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046661805] [2023-11-29 01:18:53,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046661805] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:18:53,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [500073104] [2023-11-29 01:18:53,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:18:53,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:18:53,494 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493db695-de81-409a-9677-d5eb08736d11/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:18:53,496 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493db695-de81-409a-9677-d5eb08736d11/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:18:53,504 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493db695-de81-409a-9677-d5eb08736d11/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 01:18:53,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:18:53,647 INFO L262 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 01:18:53,651 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:18:53,697 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:18:53,697 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:18:53,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [500073104] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:18:53,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:18:53,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-11-29 01:18:53,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018978803] [2023-11-29 01:18:53,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:18:53,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 01:18:53,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:18:53,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 01:18:53,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-29 01:18:53,709 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 120 [2023-11-29 01:18:53,710 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 109 transitions, 247 flow. Second operand has 6 states, 6 states have (on average 56.833333333333336) internal successors, (341), 6 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:18:53,710 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:18:53,710 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 120 [2023-11-29 01:18:53,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:18:55,786 INFO L124 PetriNetUnfolderBase]: 9801/17207 cut-off events. [2023-11-29 01:18:55,787 INFO L125 PetriNetUnfolderBase]: For 115/115 co-relation queries the response was YES. [2023-11-29 01:18:55,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30560 conditions, 17207 events. 9801/17207 cut-off events. For 115/115 co-relation queries the response was YES. Maximal size of possible extension queue 939. Compared 144660 event pairs, 7297 based on Foata normal form. 1/12677 useless extension candidates. Maximal degree in co-relation 30533. Up to 13195 conditions per place. [2023-11-29 01:18:55,904 INFO L140 encePairwiseOnDemand]: 115/120 looper letters, 48 selfloop transitions, 7 changer transitions 0/108 dead transitions. [2023-11-29 01:18:55,905 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 108 transitions, 353 flow [2023-11-29 01:18:55,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 01:18:55,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 01:18:55,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 392 transitions. [2023-11-29 01:18:55,908 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5444444444444444 [2023-11-29 01:18:55,909 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 392 transitions. [2023-11-29 01:18:55,909 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 392 transitions. [2023-11-29 01:18:55,909 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:18:55,909 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 392 transitions. [2023-11-29 01:18:55,911 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 65.33333333333333) internal successors, (392), 6 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:18:55,914 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 120.0) internal successors, (840), 7 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:18:55,915 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 120.0) internal successors, (840), 7 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:18:55,915 INFO L175 Difference]: Start difference. First operand has 105 places, 109 transitions, 247 flow. Second operand 6 states and 392 transitions. [2023-11-29 01:18:55,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 108 transitions, 353 flow [2023-11-29 01:18:55,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 108 transitions, 350 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 01:18:55,919 INFO L231 Difference]: Finished difference. Result has 108 places, 108 transitions, 254 flow [2023-11-29 01:18:55,919 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=254, PETRI_PLACES=108, PETRI_TRANSITIONS=108} [2023-11-29 01:18:55,920 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, -6 predicate places. [2023-11-29 01:18:55,920 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 108 transitions, 254 flow [2023-11-29 01:18:55,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 56.833333333333336) internal successors, (341), 6 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:18:55,921 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:18:55,921 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2023-11-29 01:18:55,928 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493db695-de81-409a-9677-d5eb08736d11/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 01:18:56,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493db695-de81-409a-9677-d5eb08736d11/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-11-29 01:18:56,122 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2023-11-29 01:18:56,122 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:18:56,122 INFO L85 PathProgramCache]: Analyzing trace with hash 1910070711, now seen corresponding path program 1 times [2023-11-29 01:18:56,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:18:56,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448853036] [2023-11-29 01:18:56,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:18:56,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:18:56,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:18:56,204 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:18:56,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:18:56,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448853036] [2023-11-29 01:18:56,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448853036] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:18:56,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [912582743] [2023-11-29 01:18:56,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:18:56,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:18:56,206 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493db695-de81-409a-9677-d5eb08736d11/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:18:56,207 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493db695-de81-409a-9677-d5eb08736d11/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:18:56,212 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493db695-de81-409a-9677-d5eb08736d11/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 01:18:56,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:18:56,328 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 01:18:56,328 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:18:56,354 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:18:56,354 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:18:56,393 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:18:56,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [912582743] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:18:56,394 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:18:56,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2023-11-29 01:18:56,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34239027] [2023-11-29 01:18:56,394 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:18:56,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 01:18:56,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:18:56,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 01:18:56,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-11-29 01:18:56,408 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 120 [2023-11-29 01:18:56,410 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 108 transitions, 254 flow. Second operand has 12 states, 12 states have (on average 57.083333333333336) internal successors, (685), 12 states have internal predecessors, (685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:18:56,410 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:18:56,410 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 120 [2023-11-29 01:18:56,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:18:58,539 INFO L124 PetriNetUnfolderBase]: 9804/17219 cut-off events. [2023-11-29 01:18:58,539 INFO L125 PetriNetUnfolderBase]: For 132/132 co-relation queries the response was YES. [2023-11-29 01:18:58,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30604 conditions, 17219 events. 9804/17219 cut-off events. For 132/132 co-relation queries the response was YES. Maximal size of possible extension queue 925. Compared 144464 event pairs, 7297 based on Foata normal form. 3/12689 useless extension candidates. Maximal degree in co-relation 30534. Up to 13202 conditions per place. [2023-11-29 01:18:58,641 INFO L140 encePairwiseOnDemand]: 115/120 looper letters, 51 selfloop transitions, 13 changer transitions 0/117 dead transitions. [2023-11-29 01:18:58,641 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 117 transitions, 436 flow [2023-11-29 01:18:58,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 01:18:58,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 01:18:58,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 627 transitions. [2023-11-29 01:18:58,645 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5225 [2023-11-29 01:18:58,645 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 627 transitions. [2023-11-29 01:18:58,645 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 627 transitions. [2023-11-29 01:18:58,646 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:18:58,646 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 627 transitions. [2023-11-29 01:18:58,648 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 62.7) internal successors, (627), 10 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:18:58,651 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 120.0) internal successors, (1320), 11 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) [2023-11-29 01:18:58,652 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 120.0) internal successors, (1320), 11 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) [2023-11-29 01:18:58,653 INFO L175 Difference]: Start difference. First operand has 108 places, 108 transitions, 254 flow. Second operand 10 states and 627 transitions. [2023-11-29 01:18:58,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 117 transitions, 436 flow [2023-11-29 01:18:58,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 117 transitions, 390 flow, removed 8 selfloop flow, removed 5 redundant places. [2023-11-29 01:18:58,658 INFO L231 Difference]: Finished difference. Result has 115 places, 117 transitions, 306 flow [2023-11-29 01:18:58,659 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=306, PETRI_PLACES=115, PETRI_TRANSITIONS=117} [2023-11-29 01:18:58,660 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, 1 predicate places. [2023-11-29 01:18:58,660 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 117 transitions, 306 flow [2023-11-29 01:18:58,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 57.083333333333336) internal successors, (685), 12 states have internal predecessors, (685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:18:58,661 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:18:58,661 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:18:58,667 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493db695-de81-409a-9677-d5eb08736d11/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 01:18:58,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493db695-de81-409a-9677-d5eb08736d11/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:18:58,864 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2023-11-29 01:18:58,865 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:18:58,865 INFO L85 PathProgramCache]: Analyzing trace with hash 2100718654, now seen corresponding path program 1 times [2023-11-29 01:18:58,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:18:58,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677901312] [2023-11-29 01:18:58,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:18:58,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:18:58,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:18:58,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:18:58,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:18:58,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677901312] [2023-11-29 01:18:58,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677901312] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:18:58,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:18:58,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:18:58,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815170693] [2023-11-29 01:18:58,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:18:58,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:18:58,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:18:58,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:18:58,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:18:58,954 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 120 [2023-11-29 01:18:58,955 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 117 transitions, 306 flow. Second operand has 4 states, 4 states have (on average 53.75) internal successors, (215), 4 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:18:58,955 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:18:58,955 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 120 [2023-11-29 01:18:58,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:19:01,249 INFO L124 PetriNetUnfolderBase]: 15100/25976 cut-off events. [2023-11-29 01:19:01,250 INFO L125 PetriNetUnfolderBase]: For 146/146 co-relation queries the response was YES. [2023-11-29 01:19:01,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46622 conditions, 25976 events. 15100/25976 cut-off events. For 146/146 co-relation queries the response was YES. Maximal size of possible extension queue 1394. Compared 227984 event pairs, 6717 based on Foata normal form. 532/19416 useless extension candidates. Maximal degree in co-relation 46588. Up to 12266 conditions per place. [2023-11-29 01:19:01,381 INFO L140 encePairwiseOnDemand]: 112/120 looper letters, 123 selfloop transitions, 5 changer transitions 0/176 dead transitions. [2023-11-29 01:19:01,381 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 176 transitions, 684 flow [2023-11-29 01:19:01,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:19:01,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 01:19:01,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 327 transitions. [2023-11-29 01:19:01,383 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.68125 [2023-11-29 01:19:01,384 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 327 transitions. [2023-11-29 01:19:01,384 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 327 transitions. [2023-11-29 01:19:01,384 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:19:01,384 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 327 transitions. [2023-11-29 01:19:01,385 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 81.75) internal successors, (327), 4 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:19:01,387 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 120.0) internal successors, (600), 5 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:19:01,388 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 120.0) internal successors, (600), 5 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:19:01,388 INFO L175 Difference]: Start difference. First operand has 115 places, 117 transitions, 306 flow. Second operand 4 states and 327 transitions. [2023-11-29 01:19:01,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 176 transitions, 684 flow [2023-11-29 01:19:01,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 176 transitions, 673 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-11-29 01:19:01,393 INFO L231 Difference]: Finished difference. Result has 118 places, 119 transitions, 329 flow [2023-11-29 01:19:01,393 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=293, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=329, PETRI_PLACES=118, PETRI_TRANSITIONS=119} [2023-11-29 01:19:01,394 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, 4 predicate places. [2023-11-29 01:19:01,394 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 119 transitions, 329 flow [2023-11-29 01:19:01,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.75) internal successors, (215), 4 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:19:01,395 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:19:01,395 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:19:01,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 01:19:01,395 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2023-11-29 01:19:01,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:19:01,396 INFO L85 PathProgramCache]: Analyzing trace with hash 697769922, now seen corresponding path program 1 times [2023-11-29 01:19:01,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:19:01,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105536275] [2023-11-29 01:19:01,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:19:01,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:19:01,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:19:01,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:19:01,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:19:01,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105536275] [2023-11-29 01:19:01,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105536275] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:19:01,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:19:01,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 01:19:01,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918028568] [2023-11-29 01:19:01,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:19:01,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:19:01,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:19:01,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:19:01,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:19:01,463 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 120 [2023-11-29 01:19:01,464 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 119 transitions, 329 flow. Second operand has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:19:01,464 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:19:01,464 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 120 [2023-11-29 01:19:01,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:19:03,308 INFO L124 PetriNetUnfolderBase]: 11242/20710 cut-off events. [2023-11-29 01:19:03,308 INFO L125 PetriNetUnfolderBase]: For 3269/3775 co-relation queries the response was YES. [2023-11-29 01:19:03,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38636 conditions, 20710 events. 11242/20710 cut-off events. For 3269/3775 co-relation queries the response was YES. Maximal size of possible extension queue 1161. Compared 188434 event pairs, 8503 based on Foata normal form. 256/15845 useless extension candidates. Maximal degree in co-relation 38607. Up to 15177 conditions per place. [2023-11-29 01:19:03,423 INFO L140 encePairwiseOnDemand]: 117/120 looper letters, 62 selfloop transitions, 2 changer transitions 0/118 dead transitions. [2023-11-29 01:19:03,423 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 118 transitions, 454 flow [2023-11-29 01:19:03,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:19:03,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 01:19:03,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 228 transitions. [2023-11-29 01:19:03,425 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6333333333333333 [2023-11-29 01:19:03,425 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 228 transitions. [2023-11-29 01:19:03,425 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 228 transitions. [2023-11-29 01:19:03,425 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:19:03,425 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 228 transitions. [2023-11-29 01:19:03,426 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 76.0) internal successors, (228), 3 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:19:03,427 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 120.0) internal successors, (480), 4 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:19:03,427 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 120.0) internal successors, (480), 4 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:19:03,428 INFO L175 Difference]: Start difference. First operand has 118 places, 119 transitions, 329 flow. Second operand 3 states and 228 transitions. [2023-11-29 01:19:03,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 118 transitions, 454 flow [2023-11-29 01:19:03,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 118 transitions, 454 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 01:19:03,474 INFO L231 Difference]: Finished difference. Result has 120 places, 118 transitions, 330 flow [2023-11-29 01:19:03,474 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=326, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=330, PETRI_PLACES=120, PETRI_TRANSITIONS=118} [2023-11-29 01:19:03,475 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, 6 predicate places. [2023-11-29 01:19:03,475 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 118 transitions, 330 flow [2023-11-29 01:19:03,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:19:03,476 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:19:03,476 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:19:03,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 01:19:03,476 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2023-11-29 01:19:03,476 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:19:03,476 INFO L85 PathProgramCache]: Analyzing trace with hash 1747817789, now seen corresponding path program 1 times [2023-11-29 01:19:03,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:19:03,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438959174] [2023-11-29 01:19:03,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:19:03,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:19:03,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:19:03,766 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:19:03,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:19:03,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438959174] [2023-11-29 01:19:03,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438959174] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:19:03,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [775078772] [2023-11-29 01:19:03,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:19:03,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:19:03,768 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493db695-de81-409a-9677-d5eb08736d11/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:19:03,770 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493db695-de81-409a-9677-d5eb08736d11/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:19:03,780 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493db695-de81-409a-9677-d5eb08736d11/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 01:19:03,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:19:03,906 INFO L262 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-29 01:19:03,908 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:19:03,955 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-29 01:19:04,013 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-11-29 01:19:04,019 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:19:04,019 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:19:04,097 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2023-11-29 01:19:04,102 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2023-11-29 01:19:04,116 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:19:04,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [775078772] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:19:04,116 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:19:04,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-11-29 01:19:04,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760673771] [2023-11-29 01:19:04,117 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:19:04,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-29 01:19:04,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:19:04,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-29 01:19:04,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-11-29 01:19:04,193 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 120 [2023-11-29 01:19:04,194 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 118 transitions, 330 flow. Second operand has 13 states, 13 states have (on average 56.38461538461539) internal successors, (733), 13 states have internal predecessors, (733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:19:04,194 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:19:04,194 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 120 [2023-11-29 01:19:04,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:19:08,553 INFO L124 PetriNetUnfolderBase]: 23415/45021 cut-off events. [2023-11-29 01:19:08,553 INFO L125 PetriNetUnfolderBase]: For 6777/6783 co-relation queries the response was YES. [2023-11-29 01:19:08,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84772 conditions, 45021 events. 23415/45021 cut-off events. For 6777/6783 co-relation queries the response was YES. Maximal size of possible extension queue 1406. Compared 449687 event pairs, 6815 based on Foata normal form. 6/34744 useless extension candidates. Maximal degree in co-relation 84749. Up to 12638 conditions per place. [2023-11-29 01:19:08,815 INFO L140 encePairwiseOnDemand]: 107/120 looper letters, 178 selfloop transitions, 18 changer transitions 0/248 dead transitions. [2023-11-29 01:19:08,815 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 248 transitions, 1012 flow [2023-11-29 01:19:08,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 01:19:08,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 01:19:08,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 736 transitions. [2023-11-29 01:19:08,819 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6133333333333333 [2023-11-29 01:19:08,819 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 736 transitions. [2023-11-29 01:19:08,819 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 736 transitions. [2023-11-29 01:19:08,820 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:19:08,820 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 736 transitions. [2023-11-29 01:19:08,822 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 73.6) internal successors, (736), 10 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:19:08,824 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 120.0) internal successors, (1320), 11 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) [2023-11-29 01:19:08,824 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 120.0) internal successors, (1320), 11 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) [2023-11-29 01:19:08,824 INFO L175 Difference]: Start difference. First operand has 120 places, 118 transitions, 330 flow. Second operand 10 states and 736 transitions. [2023-11-29 01:19:08,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 248 transitions, 1012 flow [2023-11-29 01:19:09,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 248 transitions, 1008 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 01:19:09,063 INFO L231 Difference]: Finished difference. Result has 130 places, 127 transitions, 433 flow [2023-11-29 01:19:09,063 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=326, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=433, PETRI_PLACES=130, PETRI_TRANSITIONS=127} [2023-11-29 01:19:09,064 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, 16 predicate places. [2023-11-29 01:19:09,064 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 127 transitions, 433 flow [2023-11-29 01:19:09,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 56.38461538461539) internal successors, (733), 13 states have internal predecessors, (733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:19:09,065 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:19:09,065 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:19:09,069 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493db695-de81-409a-9677-d5eb08736d11/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 01:19:09,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493db695-de81-409a-9677-d5eb08736d11/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-29 01:19:09,265 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2023-11-29 01:19:09,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:19:09,266 INFO L85 PathProgramCache]: Analyzing trace with hash 1008049241, now seen corresponding path program 1 times [2023-11-29 01:19:09,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:19:09,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528821017] [2023-11-29 01:19:09,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:19:09,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:19:09,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:19:09,317 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 01:19:09,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:19:09,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528821017] [2023-11-29 01:19:09,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528821017] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:19:09,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:19:09,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:19:09,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490260312] [2023-11-29 01:19:09,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:19:09,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:19:09,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:19:09,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:19:09,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:19:09,337 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 120 [2023-11-29 01:19:09,338 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 127 transitions, 433 flow. Second operand has 4 states, 4 states have (on average 54.75) internal successors, (219), 4 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:19:09,338 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:19:09,338 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 120 [2023-11-29 01:19:09,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:19:15,261 INFO L124 PetriNetUnfolderBase]: 33865/61792 cut-off events. [2023-11-29 01:19:15,261 INFO L125 PetriNetUnfolderBase]: For 32046/33680 co-relation queries the response was YES. [2023-11-29 01:19:15,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128326 conditions, 61792 events. 33865/61792 cut-off events. For 32046/33680 co-relation queries the response was YES. Maximal size of possible extension queue 1872. Compared 618209 event pairs, 15006 based on Foata normal form. 1928/48602 useless extension candidates. Maximal degree in co-relation 128290. Up to 26845 conditions per place. [2023-11-29 01:19:15,640 INFO L140 encePairwiseOnDemand]: 112/120 looper letters, 152 selfloop transitions, 5 changer transitions 0/206 dead transitions. [2023-11-29 01:19:15,640 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 206 transitions, 1069 flow [2023-11-29 01:19:15,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:19:15,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 01:19:15,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 327 transitions. [2023-11-29 01:19:15,643 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.68125 [2023-11-29 01:19:15,643 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 327 transitions. [2023-11-29 01:19:15,643 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 327 transitions. [2023-11-29 01:19:15,643 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:19:15,643 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 327 transitions. [2023-11-29 01:19:15,644 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 81.75) internal successors, (327), 4 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:19:15,646 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 120.0) internal successors, (600), 5 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:19:15,646 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 120.0) internal successors, (600), 5 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:19:15,646 INFO L175 Difference]: Start difference. First operand has 130 places, 127 transitions, 433 flow. Second operand 4 states and 327 transitions. [2023-11-29 01:19:15,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 206 transitions, 1069 flow [2023-11-29 01:19:15,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 206 transitions, 1053 flow, removed 3 selfloop flow, removed 4 redundant places. [2023-11-29 01:19:15,919 INFO L231 Difference]: Finished difference. Result has 131 places, 129 transitions, 455 flow [2023-11-29 01:19:15,919 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=419, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=455, PETRI_PLACES=131, PETRI_TRANSITIONS=129} [2023-11-29 01:19:15,920 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, 17 predicate places. [2023-11-29 01:19:15,920 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 129 transitions, 455 flow [2023-11-29 01:19:15,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 54.75) internal successors, (219), 4 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:19:15,920 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:19:15,920 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:19:15,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 01:19:15,920 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2023-11-29 01:19:15,920 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:19:15,920 INFO L85 PathProgramCache]: Analyzing trace with hash -1652254073, now seen corresponding path program 1 times [2023-11-29 01:19:15,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:19:15,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636302838] [2023-11-29 01:19:15,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:19:15,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:19:15,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:19:16,163 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:19:16,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:19:16,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636302838] [2023-11-29 01:19:16,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636302838] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:19:16,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [400181786] [2023-11-29 01:19:16,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:19:16,164 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:19:16,165 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493db695-de81-409a-9677-d5eb08736d11/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:19:16,170 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493db695-de81-409a-9677-d5eb08736d11/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:19:16,171 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493db695-de81-409a-9677-d5eb08736d11/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 01:19:16,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:19:16,294 INFO L262 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-29 01:19:16,296 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:19:16,307 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-29 01:19:16,356 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-29 01:19:16,362 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:19:16,362 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:19:16,423 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2023-11-29 01:19:16,427 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2023-11-29 01:19:16,438 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:19:16,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [400181786] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:19:16,439 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:19:16,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-11-29 01:19:16,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252778097] [2023-11-29 01:19:16,439 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:19:16,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-29 01:19:16,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:19:16,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-29 01:19:16,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-11-29 01:19:16,491 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 120 [2023-11-29 01:19:16,492 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 129 transitions, 455 flow. Second operand has 13 states, 13 states have (on average 54.53846153846154) internal successors, (709), 13 states have internal predecessors, (709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:19:16,492 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:19:16,492 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 120 [2023-11-29 01:19:16,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:19:23,279 INFO L124 PetriNetUnfolderBase]: 32407/59347 cut-off events. [2023-11-29 01:19:23,280 INFO L125 PetriNetUnfolderBase]: For 33854/35534 co-relation queries the response was YES. [2023-11-29 01:19:23,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128178 conditions, 59347 events. 32407/59347 cut-off events. For 33854/35534 co-relation queries the response was YES. Maximal size of possible extension queue 1835. Compared 586478 event pairs, 9511 based on Foata normal form. 1280/47930 useless extension candidates. Maximal degree in co-relation 128143. Up to 18047 conditions per place. [2023-11-29 01:19:23,878 INFO L140 encePairwiseOnDemand]: 107/120 looper letters, 192 selfloop transitions, 18 changer transitions 0/259 dead transitions. [2023-11-29 01:19:23,878 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 259 transitions, 1223 flow [2023-11-29 01:19:23,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 01:19:23,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 01:19:23,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 716 transitions. [2023-11-29 01:19:23,881 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5966666666666667 [2023-11-29 01:19:23,881 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 716 transitions. [2023-11-29 01:19:23,881 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 716 transitions. [2023-11-29 01:19:23,881 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:19:23,881 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 716 transitions. [2023-11-29 01:19:23,883 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 71.6) internal successors, (716), 10 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:19:23,885 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 120.0) internal successors, (1320), 11 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) [2023-11-29 01:19:23,885 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 120.0) internal successors, (1320), 11 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) [2023-11-29 01:19:23,885 INFO L175 Difference]: Start difference. First operand has 131 places, 129 transitions, 455 flow. Second operand 10 states and 716 transitions. [2023-11-29 01:19:23,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 259 transitions, 1223 flow [2023-11-29 01:19:24,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 259 transitions, 1223 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 01:19:24,071 INFO L231 Difference]: Finished difference. Result has 142 places, 131 transitions, 517 flow [2023-11-29 01:19:24,072 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=449, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=517, PETRI_PLACES=142, PETRI_TRANSITIONS=131} [2023-11-29 01:19:24,072 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, 28 predicate places. [2023-11-29 01:19:24,073 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 131 transitions, 517 flow [2023-11-29 01:19:24,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 54.53846153846154) internal successors, (709), 13 states have internal predecessors, (709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:19:24,073 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:19:24,073 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:19:24,077 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493db695-de81-409a-9677-d5eb08736d11/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 01:19:24,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493db695-de81-409a-9677-d5eb08736d11/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:19:24,274 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2023-11-29 01:19:24,274 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:19:24,274 INFO L85 PathProgramCache]: Analyzing trace with hash 319731359, now seen corresponding path program 1 times [2023-11-29 01:19:24,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:19:24,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44856166] [2023-11-29 01:19:24,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:19:24,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:19:24,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:19:24,345 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 01:19:24,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:19:24,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44856166] [2023-11-29 01:19:24,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44856166] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:19:24,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:19:24,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:19:24,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179181787] [2023-11-29 01:19:24,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:19:24,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 01:19:24,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:19:24,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 01:19:24,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:19:24,375 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 120 [2023-11-29 01:19:24,376 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 131 transitions, 517 flow. Second operand has 5 states, 5 states have (on average 53.2) internal successors, (266), 5 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:19:24,376 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:19:24,376 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 120 [2023-11-29 01:19:24,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:19:31,277 INFO L124 PetriNetUnfolderBase]: 38554/65700 cut-off events. [2023-11-29 01:19:31,277 INFO L125 PetriNetUnfolderBase]: For 49985/51870 co-relation queries the response was YES. [2023-11-29 01:19:31,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 151399 conditions, 65700 events. 38554/65700 cut-off events. For 49985/51870 co-relation queries the response was YES. Maximal size of possible extension queue 2054. Compared 608945 event pairs, 8676 based on Foata normal form. 1578/54281 useless extension candidates. Maximal degree in co-relation 151358. Up to 31666 conditions per place. [2023-11-29 01:19:31,756 INFO L140 encePairwiseOnDemand]: 112/120 looper letters, 183 selfloop transitions, 6 changer transitions 0/237 dead transitions. [2023-11-29 01:19:31,756 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 237 transitions, 1170 flow [2023-11-29 01:19:31,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 01:19:31,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 01:19:31,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 422 transitions. [2023-11-29 01:19:31,759 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7033333333333334 [2023-11-29 01:19:31,759 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 422 transitions. [2023-11-29 01:19:31,759 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 422 transitions. [2023-11-29 01:19:31,759 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:19:31,759 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 422 transitions. [2023-11-29 01:19:31,760 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 84.4) internal successors, (422), 5 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:19:31,761 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 120.0) internal successors, (720), 6 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:19:31,761 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 120.0) internal successors, (720), 6 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:19:31,761 INFO L175 Difference]: Start difference. First operand has 142 places, 131 transitions, 517 flow. Second operand 5 states and 422 transitions. [2023-11-29 01:19:31,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 237 transitions, 1170 flow [2023-11-29 01:19:32,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 237 transitions, 1146 flow, removed 1 selfloop flow, removed 7 redundant places. [2023-11-29 01:19:32,246 INFO L231 Difference]: Finished difference. Result has 142 places, 132 transitions, 517 flow [2023-11-29 01:19:32,246 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=485, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=517, PETRI_PLACES=142, PETRI_TRANSITIONS=132} [2023-11-29 01:19:32,246 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, 28 predicate places. [2023-11-29 01:19:32,247 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 132 transitions, 517 flow [2023-11-29 01:19:32,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 53.2) internal successors, (266), 5 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:19:32,247 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:19:32,247 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:19:32,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 01:19:32,247 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2023-11-29 01:19:32,247 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:19:32,247 INFO L85 PathProgramCache]: Analyzing trace with hash 1081260534, now seen corresponding path program 1 times [2023-11-29 01:19:32,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:19:32,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083775345] [2023-11-29 01:19:32,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:19:32,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:19:32,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:19:32,517 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:19:32,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:19:32,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083775345] [2023-11-29 01:19:32,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083775345] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:19:32,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1877641163] [2023-11-29 01:19:32,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:19:32,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:19:32,518 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493db695-de81-409a-9677-d5eb08736d11/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:19:32,519 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493db695-de81-409a-9677-d5eb08736d11/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:19:32,524 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493db695-de81-409a-9677-d5eb08736d11/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 01:19:32,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:19:32,655 INFO L262 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-29 01:19:32,658 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:19:32,685 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2023-11-29 01:19:32,915 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:19:32,915 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:19:33,106 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2023-11-29 01:19:33,112 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 20 [2023-11-29 01:19:33,153 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:19:33,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1877641163] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:19:33,153 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:19:33,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15 [2023-11-29 01:19:33,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171543422] [2023-11-29 01:19:33,154 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:19:33,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-29 01:19:33,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:19:33,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-29 01:19:33,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2023-11-29 01:19:33,273 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 120 [2023-11-29 01:19:33,274 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 132 transitions, 517 flow. Second operand has 17 states, 17 states have (on average 57.94117647058823) internal successors, (985), 17 states have internal predecessors, (985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:19:33,274 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:19:33,274 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 120 [2023-11-29 01:19:33,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:19:55,389 INFO L124 PetriNetUnfolderBase]: 105380/177719 cut-off events. [2023-11-29 01:19:55,389 INFO L125 PetriNetUnfolderBase]: For 161696/169692 co-relation queries the response was YES. [2023-11-29 01:19:56,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 416885 conditions, 177719 events. 105380/177719 cut-off events. For 161696/169692 co-relation queries the response was YES. Maximal size of possible extension queue 4782. Compared 1804751 event pairs, 25827 based on Foata normal form. 4975/146247 useless extension candidates. Maximal degree in co-relation 416843. Up to 27931 conditions per place. [2023-11-29 01:19:57,297 INFO L140 encePairwiseOnDemand]: 106/120 looper letters, 394 selfloop transitions, 38 changer transitions 0/488 dead transitions. [2023-11-29 01:19:57,298 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 488 transitions, 2956 flow [2023-11-29 01:19:57,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 01:19:57,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-29 01:19:57,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1110 transitions. [2023-11-29 01:19:57,301 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6607142857142857 [2023-11-29 01:19:57,301 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1110 transitions. [2023-11-29 01:19:57,301 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1110 transitions. [2023-11-29 01:19:57,302 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:19:57,302 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1110 transitions. [2023-11-29 01:19:57,304 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 79.28571428571429) internal successors, (1110), 14 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:19:57,306 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 120.0) internal successors, (1800), 15 states have internal predecessors, (1800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:19:57,307 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 120.0) internal successors, (1800), 15 states have internal predecessors, (1800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:19:57,307 INFO L175 Difference]: Start difference. First operand has 142 places, 132 transitions, 517 flow. Second operand 14 states and 1110 transitions. [2023-11-29 01:19:57,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 488 transitions, 2956 flow [2023-11-29 01:19:58,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 488 transitions, 2931 flow, removed 8 selfloop flow, removed 1 redundant places. [2023-11-29 01:19:58,147 INFO L231 Difference]: Finished difference. Result has 156 places, 163 transitions, 697 flow [2023-11-29 01:19:58,147 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=513, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=697, PETRI_PLACES=156, PETRI_TRANSITIONS=163} [2023-11-29 01:19:58,148 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, 42 predicate places. [2023-11-29 01:19:58,148 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 163 transitions, 697 flow [2023-11-29 01:19:58,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 57.94117647058823) internal successors, (985), 17 states have internal predecessors, (985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:19:58,149 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:19:58,149 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:19:58,154 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493db695-de81-409a-9677-d5eb08736d11/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 01:19:58,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493db695-de81-409a-9677-d5eb08736d11/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-29 01:19:58,350 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2023-11-29 01:19:58,350 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:19:58,350 INFO L85 PathProgramCache]: Analyzing trace with hash 1081260538, now seen corresponding path program 1 times [2023-11-29 01:19:58,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:19:58,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980243403] [2023-11-29 01:19:58,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:19:58,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:19:58,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:19:58,426 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 01:19:58,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:19:58,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980243403] [2023-11-29 01:19:58,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980243403] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:19:58,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:19:58,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 01:19:58,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967796772] [2023-11-29 01:19:58,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:19:58,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:19:58,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:19:58,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:19:58,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:19:58,430 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 120 [2023-11-29 01:19:58,430 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 163 transitions, 697 flow. Second operand has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 3 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:19:58,431 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:19:58,431 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 120 [2023-11-29 01:19:58,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:20:22,762 INFO L124 PetriNetUnfolderBase]: 116548/198355 cut-off events. [2023-11-29 01:20:22,763 INFO L125 PetriNetUnfolderBase]: For 211142/220314 co-relation queries the response was YES. [2023-11-29 01:20:23,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 515333 conditions, 198355 events. 116548/198355 cut-off events. For 211142/220314 co-relation queries the response was YES. Maximal size of possible extension queue 5356. Compared 2061989 event pairs, 33680 based on Foata normal form. 5707/169283 useless extension candidates. Maximal degree in co-relation 515286. Up to 98999 conditions per place. [2023-11-29 01:20:24,589 INFO L140 encePairwiseOnDemand]: 115/120 looper letters, 146 selfloop transitions, 7 changer transitions 0/210 dead transitions. [2023-11-29 01:20:24,589 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 210 transitions, 1225 flow [2023-11-29 01:20:24,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:20:24,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 01:20:24,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 265 transitions. [2023-11-29 01:20:24,591 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7361111111111112 [2023-11-29 01:20:24,591 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 265 transitions. [2023-11-29 01:20:24,592 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 265 transitions. [2023-11-29 01:20:24,592 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:20:24,592 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 265 transitions. [2023-11-29 01:20:24,593 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 88.33333333333333) internal successors, (265), 3 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:20:24,593 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 120.0) internal successors, (480), 4 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:20:24,593 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 120.0) internal successors, (480), 4 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:20:24,594 INFO L175 Difference]: Start difference. First operand has 156 places, 163 transitions, 697 flow. Second operand 3 states and 265 transitions. [2023-11-29 01:20:24,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 210 transitions, 1225 flow [2023-11-29 01:20:25,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 210 transitions, 1216 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-29 01:20:25,771 INFO L231 Difference]: Finished difference. Result has 155 places, 161 transitions, 709 flow [2023-11-29 01:20:25,771 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=672, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=709, PETRI_PLACES=155, PETRI_TRANSITIONS=161} [2023-11-29 01:20:25,772 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, 41 predicate places. [2023-11-29 01:20:25,772 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 161 transitions, 709 flow [2023-11-29 01:20:25,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 3 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:20:25,772 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:20:25,772 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:20:25,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-29 01:20:25,772 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2023-11-29 01:20:25,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:20:25,773 INFO L85 PathProgramCache]: Analyzing trace with hash 1081260535, now seen corresponding path program 1 times [2023-11-29 01:20:25,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:20:25,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536611489] [2023-11-29 01:20:25,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:20:25,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:20:25,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:20:26,078 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:20:26,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:20:26,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536611489] [2023-11-29 01:20:26,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536611489] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:20:26,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1638414104] [2023-11-29 01:20:26,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:20:26,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:20:26,079 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493db695-de81-409a-9677-d5eb08736d11/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:20:26,080 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493db695-de81-409a-9677-d5eb08736d11/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:20:26,082 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493db695-de81-409a-9677-d5eb08736d11/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 01:20:26,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:20:26,217 INFO L262 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-29 01:20:26,219 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:20:26,247 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2023-11-29 01:20:26,439 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:20:26,439 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:20:26,585 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2023-11-29 01:20:26,590 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2023-11-29 01:20:26,630 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:20:26,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1638414104] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:20:26,630 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:20:26,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15 [2023-11-29 01:20:26,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969158537] [2023-11-29 01:20:26,631 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:20:26,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-29 01:20:26,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:20:26,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-29 01:20:26,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2023-11-29 01:20:26,778 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 120 [2023-11-29 01:20:26,779 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 161 transitions, 709 flow. Second operand has 17 states, 17 states have (on average 57.94117647058823) internal successors, (985), 17 states have internal predecessors, (985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:20:26,780 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:20:26,780 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 120 [2023-11-29 01:20:26,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:20:52,052 INFO L124 PetriNetUnfolderBase]: 111700/192392 cut-off events. [2023-11-29 01:20:52,052 INFO L125 PetriNetUnfolderBase]: For 218105/226693 co-relation queries the response was YES. [2023-11-29 01:20:53,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 511139 conditions, 192392 events. 111700/192392 cut-off events. For 218105/226693 co-relation queries the response was YES. Maximal size of possible extension queue 5288. Compared 2018024 event pairs, 33725 based on Foata normal form. 5327/168258 useless extension candidates. Maximal degree in co-relation 511091. Up to 27832 conditions per place. [2023-11-29 01:20:54,172 INFO L140 encePairwiseOnDemand]: 106/120 looper letters, 388 selfloop transitions, 40 changer transitions 0/484 dead transitions. [2023-11-29 01:20:54,173 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 484 transitions, 3065 flow [2023-11-29 01:20:54,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 01:20:54,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-29 01:20:54,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1104 transitions. [2023-11-29 01:20:54,178 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6571428571428571 [2023-11-29 01:20:54,178 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1104 transitions. [2023-11-29 01:20:54,178 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1104 transitions. [2023-11-29 01:20:54,180 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:20:54,180 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1104 transitions. [2023-11-29 01:20:54,183 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 78.85714285714286) internal successors, (1104), 14 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:20:54,187 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 120.0) internal successors, (1800), 15 states have internal predecessors, (1800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:20:54,188 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 120.0) internal successors, (1800), 15 states have internal predecessors, (1800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:20:54,188 INFO L175 Difference]: Start difference. First operand has 155 places, 161 transitions, 709 flow. Second operand 14 states and 1104 transitions. [2023-11-29 01:20:54,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 484 transitions, 3065 flow [2023-11-29 01:20:55,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 484 transitions, 3058 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 01:20:55,503 INFO L231 Difference]: Finished difference. Result has 167 places, 161 transitions, 786 flow [2023-11-29 01:20:55,504 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=694, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=786, PETRI_PLACES=167, PETRI_TRANSITIONS=161} [2023-11-29 01:20:55,504 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, 53 predicate places. [2023-11-29 01:20:55,504 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 161 transitions, 786 flow [2023-11-29 01:20:55,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 57.94117647058823) internal successors, (985), 17 states have internal predecessors, (985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:20:55,505 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:20:55,505 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:20:55,509 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493db695-de81-409a-9677-d5eb08736d11/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 01:20:55,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493db695-de81-409a-9677-d5eb08736d11/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:20:55,706 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread3Err13ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2023-11-29 01:20:55,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:20:55,706 INFO L85 PathProgramCache]: Analyzing trace with hash 1081260546, now seen corresponding path program 1 times [2023-11-29 01:20:55,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:20:55,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869231798] [2023-11-29 01:20:55,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:20:55,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:20:55,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:20:55,832 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 01:20:55,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:20:55,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869231798] [2023-11-29 01:20:55,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869231798] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:20:55,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:20:55,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 01:20:55,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122995067] [2023-11-29 01:20:55,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:20:55,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:20:55,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:20:55,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:20:55,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:20:55,847 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 120 [2023-11-29 01:20:55,848 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 161 transitions, 786 flow. Second operand has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 3 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:20:55,848 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:20:55,848 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 120 [2023-11-29 01:20:55,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:21:15,939 INFO L124 PetriNetUnfolderBase]: 100316/170700 cut-off events. [2023-11-29 01:21:15,939 INFO L125 PetriNetUnfolderBase]: For 241354/249554 co-relation queries the response was YES. [2023-11-29 01:21:16,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 473879 conditions, 170700 events. 100316/170700 cut-off events. For 241354/249554 co-relation queries the response was YES. Maximal size of possible extension queue 4531. Compared 1733436 event pairs, 23740 based on Foata normal form. 7575/156411 useless extension candidates. Maximal degree in co-relation 473828. Up to 94043 conditions per place. [2023-11-29 01:21:17,715 INFO L140 encePairwiseOnDemand]: 116/120 looper letters, 143 selfloop transitions, 4 changer transitions 0/204 dead transitions. [2023-11-29 01:21:17,715 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 204 transitions, 1280 flow [2023-11-29 01:21:17,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:21:17,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 01:21:17,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 263 transitions. [2023-11-29 01:21:17,717 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7305555555555555 [2023-11-29 01:21:17,717 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 263 transitions. [2023-11-29 01:21:17,717 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 263 transitions. [2023-11-29 01:21:17,718 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:21:17,718 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 263 transitions. [2023-11-29 01:21:17,719 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:21:17,720 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 120.0) internal successors, (480), 4 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:21:17,721 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 120.0) internal successors, (480), 4 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:21:17,721 INFO L175 Difference]: Start difference. First operand has 167 places, 161 transitions, 786 flow. Second operand 3 states and 263 transitions. [2023-11-29 01:21:17,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 204 transitions, 1280 flow [2023-11-29 01:21:18,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 204 transitions, 1261 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-29 01:21:18,759 INFO L231 Difference]: Finished difference. Result has 164 places, 156 transitions, 753 flow [2023-11-29 01:21:18,759 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=739, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=753, PETRI_PLACES=164, PETRI_TRANSITIONS=156} [2023-11-29 01:21:18,759 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, 50 predicate places. [2023-11-29 01:21:18,759 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 156 transitions, 753 flow [2023-11-29 01:21:18,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 3 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:21:18,760 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:21:18,760 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:21:18,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-29 01:21:18,760 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2023-11-29 01:21:18,760 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:21:18,760 INFO L85 PathProgramCache]: Analyzing trace with hash 1184756519, now seen corresponding path program 1 times [2023-11-29 01:21:18,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:21:18,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071616703] [2023-11-29 01:21:18,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:21:18,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:21:18,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:21:18,884 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:21:18,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:21:18,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071616703] [2023-11-29 01:21:18,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071616703] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:21:18,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1821638940] [2023-11-29 01:21:18,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:21:18,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:21:18,885 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493db695-de81-409a-9677-d5eb08736d11/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:21:18,886 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493db695-de81-409a-9677-d5eb08736d11/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:21:18,892 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493db695-de81-409a-9677-d5eb08736d11/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 01:21:19,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:21:19,010 INFO L262 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 01:21:19,011 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:21:19,066 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:21:19,067 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:21:19,125 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:21:19,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1821638940] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:21:19,126 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:21:19,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 15 [2023-11-29 01:21:19,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086940151] [2023-11-29 01:21:19,126 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:21:19,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 01:21:19,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:21:19,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 01:21:19,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2023-11-29 01:21:19,163 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 120 [2023-11-29 01:21:19,164 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 156 transitions, 753 flow. Second operand has 16 states, 16 states have (on average 57.5) internal successors, (920), 16 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:21:19,164 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:21:19,164 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 120 [2023-11-29 01:21:19,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:21:35,965 INFO L124 PetriNetUnfolderBase]: 72773/140950 cut-off events. [2023-11-29 01:21:35,965 INFO L125 PetriNetUnfolderBase]: For 186190/190167 co-relation queries the response was YES. [2023-11-29 01:21:36,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 380307 conditions, 140950 events. 72773/140950 cut-off events. For 186190/190167 co-relation queries the response was YES. Maximal size of possible extension queue 4307. Compared 1633630 event pairs, 56097 based on Foata normal form. 3288/124714 useless extension candidates. Maximal degree in co-relation 380255. Up to 90404 conditions per place. [2023-11-29 01:21:37,287 INFO L140 encePairwiseOnDemand]: 113/120 looper letters, 167 selfloop transitions, 13 changer transitions 0/236 dead transitions. [2023-11-29 01:21:37,287 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 236 transitions, 1538 flow [2023-11-29 01:21:37,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 01:21:37,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-29 01:21:37,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 570 transitions. [2023-11-29 01:21:37,290 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.59375 [2023-11-29 01:21:37,291 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 570 transitions. [2023-11-29 01:21:37,291 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 570 transitions. [2023-11-29 01:21:37,291 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:21:37,291 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 570 transitions. [2023-11-29 01:21:37,293 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 71.25) internal successors, (570), 8 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:21:37,294 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 120.0) internal successors, (1080), 9 states have internal predecessors, (1080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:21:37,294 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 120.0) internal successors, (1080), 9 states have internal predecessors, (1080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:21:37,294 INFO L175 Difference]: Start difference. First operand has 164 places, 156 transitions, 753 flow. Second operand 8 states and 570 transitions. [2023-11-29 01:21:37,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 236 transitions, 1538 flow [2023-11-29 01:21:39,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 236 transitions, 1528 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 01:21:39,512 INFO L231 Difference]: Finished difference. Result has 171 places, 158 transitions, 786 flow [2023-11-29 01:21:39,513 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=745, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=786, PETRI_PLACES=171, PETRI_TRANSITIONS=158} [2023-11-29 01:21:39,513 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, 57 predicate places. [2023-11-29 01:21:39,513 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 158 transitions, 786 flow [2023-11-29 01:21:39,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 57.5) internal successors, (920), 16 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:21:39,514 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:21:39,514 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:21:39,518 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493db695-de81-409a-9677-d5eb08736d11/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 01:21:39,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_493db695-de81-409a-9677-d5eb08736d11/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-29 01:21:39,714 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2023-11-29 01:21:39,715 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:21:39,715 INFO L85 PathProgramCache]: Analyzing trace with hash 1321738634, now seen corresponding path program 1 times [2023-11-29 01:21:39,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:21:39,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489987439] [2023-11-29 01:21:39,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:21:39,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:21:39,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:21:39,776 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 01:21:39,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:21:39,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489987439] [2023-11-29 01:21:39,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489987439] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:21:39,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:21:39,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 01:21:39,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399421269] [2023-11-29 01:21:39,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:21:39,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 01:21:39,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:21:39,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 01:21:39,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-29 01:21:39,819 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 120 [2023-11-29 01:21:39,820 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 158 transitions, 786 flow. Second operand has 6 states, 6 states have (on average 51.833333333333336) internal successors, (311), 6 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:21:39,820 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:21:39,820 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 120 [2023-11-29 01:21:39,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:22:05,027 INFO L124 PetriNetUnfolderBase]: 123089/197772 cut-off events. [2023-11-29 01:22:05,027 INFO L125 PetriNetUnfolderBase]: For 284915/290577 co-relation queries the response was YES. [2023-11-29 01:22:06,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 583031 conditions, 197772 events. 123089/197772 cut-off events. For 284915/290577 co-relation queries the response was YES. Maximal size of possible extension queue 5416. Compared 1924453 event pairs, 12617 based on Foata normal form. 4612/177587 useless extension candidates. Maximal degree in co-relation 582975. Up to 97818 conditions per place. [2023-11-29 01:22:06,990 INFO L140 encePairwiseOnDemand]: 111/120 looper letters, 340 selfloop transitions, 11 changer transitions 0/399 dead transitions. [2023-11-29 01:22:06,990 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 399 transitions, 2758 flow [2023-11-29 01:22:06,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 01:22:06,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 01:22:06,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 494 transitions. [2023-11-29 01:22:06,992 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6861111111111111 [2023-11-29 01:22:06,992 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 494 transitions. [2023-11-29 01:22:06,992 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 494 transitions. [2023-11-29 01:22:06,992 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:22:06,992 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 494 transitions. [2023-11-29 01:22:06,994 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 82.33333333333333) internal successors, (494), 6 states have internal predecessors, (494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:22:06,995 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 120.0) internal successors, (840), 7 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:22:06,995 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 120.0) internal successors, (840), 7 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:22:06,995 INFO L175 Difference]: Start difference. First operand has 171 places, 158 transitions, 786 flow. Second operand 6 states and 494 transitions. [2023-11-29 01:22:06,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 399 transitions, 2758 flow [2023-11-29 01:22:10,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 399 transitions, 2728 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-29 01:22:10,491 INFO L231 Difference]: Finished difference. Result has 173 places, 162 transitions, 823 flow [2023-11-29 01:22:10,492 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=756, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=823, PETRI_PLACES=173, PETRI_TRANSITIONS=162} [2023-11-29 01:22:10,492 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, 59 predicate places. [2023-11-29 01:22:10,492 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 162 transitions, 823 flow [2023-11-29 01:22:10,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 51.833333333333336) internal successors, (311), 6 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:22:10,492 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:22:10,492 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:22:10,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-29 01:22:10,493 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2023-11-29 01:22:10,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:22:10,493 INFO L85 PathProgramCache]: Analyzing trace with hash -1028458140, now seen corresponding path program 1 times [2023-11-29 01:22:10,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:22:10,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492440626] [2023-11-29 01:22:10,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:22:10,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:22:10,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:22:10,541 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 01:22:10,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:22:10,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492440626] [2023-11-29 01:22:10,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492440626] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:22:10,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:22:10,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:22:10,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081346919] [2023-11-29 01:22:10,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:22:10,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:22:10,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:22:10,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:22:10,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:22:10,564 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 120 [2023-11-29 01:22:10,564 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 162 transitions, 823 flow. Second operand has 4 states, 4 states have (on average 56.0) internal successors, (224), 4 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:22:10,564 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:22:10,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 120 [2023-11-29 01:22:10,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand