./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-proofs-counter-add-4-semi-Q67.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25e8c9d0-66c6-4054-9dbc-7ae39a6ae2ae/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25e8c9d0-66c6-4054-9dbc-7ae39a6ae2ae/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_25e8c9d0-66c6-4054-9dbc-7ae39a6ae2ae/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25e8c9d0-66c6-4054-9dbc-7ae39a6ae2ae/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-proofs-counter-add-4-semi-Q67.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25e8c9d0-66c6-4054-9dbc-7ae39a6ae2ae/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_25e8c9d0-66c6-4054-9dbc-7ae39a6ae2ae/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 34bb015d05a3d6b765805bee36bd4c1bc3f74929c05e61a51973bc9a4fc2cfc0 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 01:46:13,103 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 01:46:13,171 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25e8c9d0-66c6-4054-9dbc-7ae39a6ae2ae/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-29 01:46:13,175 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 01:46:13,176 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 01:46:13,199 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 01:46:13,200 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 01:46:13,200 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 01:46:13,201 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 01:46:13,201 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 01:46:13,202 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 01:46:13,202 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 01:46:13,203 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 01:46:13,204 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 01:46:13,204 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 01:46:13,205 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 01:46:13,206 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 01:46:13,206 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 01:46:13,207 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 01:46:13,207 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 01:46:13,208 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 01:46:13,209 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 01:46:13,210 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 01:46:13,210 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 01:46:13,211 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-29 01:46:13,211 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 01:46:13,211 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 01:46:13,212 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 01:46:13,212 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 01:46:13,213 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 01:46:13,213 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 01:46:13,213 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 01:46:13,214 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 01:46:13,214 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:46:13,214 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 01:46:13,214 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 01:46:13,215 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 01:46:13,215 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 01:46:13,215 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 01:46:13,215 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 01:46:13,215 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 01:46:13,216 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 01:46:13,216 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 01:46:13,216 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 01:46:13,216 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_25e8c9d0-66c6-4054-9dbc-7ae39a6ae2ae/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25e8c9d0-66c6-4054-9dbc-7ae39a6ae2ae/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 34bb015d05a3d6b765805bee36bd4c1bc3f74929c05e61a51973bc9a4fc2cfc0 [2023-11-29 01:46:13,428 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 01:46:13,450 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 01:46:13,452 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 01:46:13,454 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 01:46:13,454 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 01:46:13,455 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25e8c9d0-66c6-4054-9dbc-7ae39a6ae2ae/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/weaver/popl20-proofs-counter-add-4-semi-Q67.wvr.c [2023-11-29 01:46:16,225 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 01:46:16,378 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 01:46:16,379 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25e8c9d0-66c6-4054-9dbc-7ae39a6ae2ae/sv-benchmarks/c/weaver/popl20-proofs-counter-add-4-semi-Q67.wvr.c [2023-11-29 01:46:16,385 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25e8c9d0-66c6-4054-9dbc-7ae39a6ae2ae/bin/uautomizer-verify-BQ2R08f2Ya/data/96303fe94/0ddbf3a6717f4af3ac88dc3dc8d8cc03/FLAG44184f199 [2023-11-29 01:46:16,397 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25e8c9d0-66c6-4054-9dbc-7ae39a6ae2ae/bin/uautomizer-verify-BQ2R08f2Ya/data/96303fe94/0ddbf3a6717f4af3ac88dc3dc8d8cc03 [2023-11-29 01:46:16,399 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 01:46:16,400 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 01:46:16,401 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 01:46:16,401 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 01:46:16,405 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 01:46:16,406 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:46:16" (1/1) ... [2023-11-29 01:46:16,407 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2dccfa11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:46:16, skipping insertion in model container [2023-11-29 01:46:16,407 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:46:16" (1/1) ... [2023-11-29 01:46:16,429 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 01:46:16,595 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:46:16,605 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 01:46:16,630 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:46:16,640 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 01:46:16,640 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 01:46:16,648 INFO L206 MainTranslator]: Completed translation [2023-11-29 01:46:16,648 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:46:16 WrapperNode [2023-11-29 01:46:16,649 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 01:46:16,650 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 01:46:16,650 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 01:46:16,650 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 01:46:16,657 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:46:16" (1/1) ... [2023-11-29 01:46:16,667 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:46:16" (1/1) ... [2023-11-29 01:46:16,693 INFO L138 Inliner]: procedures = 22, calls = 43, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 148 [2023-11-29 01:46:16,694 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 01:46:16,695 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 01:46:16,695 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 01:46:16,695 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 01:46:16,706 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:46:16" (1/1) ... [2023-11-29 01:46:16,707 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:46:16" (1/1) ... [2023-11-29 01:46:16,713 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:46:16" (1/1) ... [2023-11-29 01:46:16,730 INFO L175 MemorySlicer]: Split 10 memory accesses to 5 slices as follows [2, 2, 2, 2, 2]. 20 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 01:46:16,730 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:46:16" (1/1) ... [2023-11-29 01:46:16,730 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:46:16" (1/1) ... [2023-11-29 01:46:16,738 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:46:16" (1/1) ... [2023-11-29 01:46:16,742 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:46:16" (1/1) ... [2023-11-29 01:46:16,744 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:46:16" (1/1) ... [2023-11-29 01:46:16,746 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:46:16" (1/1) ... [2023-11-29 01:46:16,749 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 01:46:16,750 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 01:46:16,751 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 01:46:16,751 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 01:46:16,752 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:46:16" (1/1) ... [2023-11-29 01:46:16,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:46:16,769 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25e8c9d0-66c6-4054-9dbc-7ae39a6ae2ae/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:46:16,781 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25e8c9d0-66c6-4054-9dbc-7ae39a6ae2ae/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 01:46:16,786 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25e8c9d0-66c6-4054-9dbc-7ae39a6ae2ae/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 01:46:16,818 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 01:46:16,818 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-29 01:46:16,818 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-29 01:46:16,819 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-29 01:46:16,819 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-29 01:46:16,819 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-29 01:46:16,819 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-29 01:46:16,819 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-11-29 01:46:16,820 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-11-29 01:46:16,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 01:46:16,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 01:46:16,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 01:46:16,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-29 01:46:16,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-29 01:46:16,821 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 01:46:16,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 01:46:16,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-29 01:46:16,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-29 01:46:16,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-29 01:46:16,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-29 01:46:16,822 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-29 01:46:16,822 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-29 01:46:16,823 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 01:46:16,823 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 01:46:16,823 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-29 01:46:16,823 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-29 01:46:16,823 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-29 01:46:16,824 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-29 01:46:16,824 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-29 01:46:16,824 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 01:46:16,826 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 01:46:16,951 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 01:46:16,953 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 01:46:17,210 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 01:46:17,457 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 01:46:17,458 INFO L309 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-29 01:46:17,458 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:46:17 BoogieIcfgContainer [2023-11-29 01:46:17,458 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 01:46:17,461 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 01:46:17,461 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 01:46:17,464 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 01:46:17,464 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 01:46:16" (1/3) ... [2023-11-29 01:46:17,465 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32ca6944 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:46:17, skipping insertion in model container [2023-11-29 01:46:17,465 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:46:16" (2/3) ... [2023-11-29 01:46:17,466 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32ca6944 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:46:17, skipping insertion in model container [2023-11-29 01:46:17,466 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:46:17" (3/3) ... [2023-11-29 01:46:17,467 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-proofs-counter-add-4-semi-Q67.wvr.c [2023-11-29 01:46:17,476 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-29 01:46:17,488 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 01:46:17,488 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2023-11-29 01:46:17,488 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 01:46:17,555 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-29 01:46:17,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 62 places, 53 transitions, 134 flow [2023-11-29 01:46:17,620 INFO L124 PetriNetUnfolderBase]: 4/49 cut-off events. [2023-11-29 01:46:17,620 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-29 01:46:17,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66 conditions, 49 events. 4/49 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 105 event pairs, 0 based on Foata normal form. 0/29 useless extension candidates. Maximal degree in co-relation 45. Up to 2 conditions per place. [2023-11-29 01:46:17,625 INFO L82 GeneralOperation]: Start removeDead. Operand has 62 places, 53 transitions, 134 flow [2023-11-29 01:46:17,629 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 56 places, 47 transitions, 115 flow [2023-11-29 01:46:17,638 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 01:46:17,644 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;@1deac59f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 01:46:17,645 INFO L358 AbstractCegarLoop]: Starting to check reachability of 36 error locations. [2023-11-29 01:46:17,651 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 01:46:17,651 INFO L124 PetriNetUnfolderBase]: 1/8 cut-off events. [2023-11-29 01:46:17,651 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 01:46:17,651 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:46:17,652 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-29 01:46:17,653 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-11-29 01:46:17,667 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:46:17,667 INFO L85 PathProgramCache]: Analyzing trace with hash 464990855, now seen corresponding path program 1 times [2023-11-29 01:46:17,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:46:17,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472664430] [2023-11-29 01:46:17,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:46:17,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:46:17,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:46:17,951 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 01:46:17,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:46:17,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472664430] [2023-11-29 01:46:17,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472664430] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:46:17,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:46:17,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 01:46:17,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023414749] [2023-11-29 01:46:17,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:46:17,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:46:17,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:46:17,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:46:17,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:46:17,999 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2023-11-29 01:46:18,001 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 47 transitions, 115 flow. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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 01:46:18,001 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:46:18,001 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2023-11-29 01:46:18,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:46:21,299 INFO L124 PetriNetUnfolderBase]: 27223/32982 cut-off events. [2023-11-29 01:46:21,299 INFO L125 PetriNetUnfolderBase]: For 1168/1168 co-relation queries the response was YES. [2023-11-29 01:46:21,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66020 conditions, 32982 events. 27223/32982 cut-off events. For 1168/1168 co-relation queries the response was YES. Maximal size of possible extension queue 2265. Compared 142069 event pairs, 5461 based on Foata normal form. 54/14762 useless extension candidates. Maximal degree in co-relation 58786. Up to 31823 conditions per place. [2023-11-29 01:46:21,618 INFO L140 encePairwiseOnDemand]: 32/53 looper letters, 51 selfloop transitions, 7 changer transitions 2/68 dead transitions. [2023-11-29 01:46:21,618 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 68 transitions, 295 flow [2023-11-29 01:46:21,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:46:21,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 01:46:21,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 112 transitions. [2023-11-29 01:46:21,631 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7044025157232704 [2023-11-29 01:46:21,631 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 112 transitions. [2023-11-29 01:46:21,632 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 112 transitions. [2023-11-29 01:46:21,633 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:46:21,635 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 112 transitions. [2023-11-29 01:46:21,638 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 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 01:46:21,641 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 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 01:46:21,642 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 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 01:46:21,644 INFO L175 Difference]: Start difference. First operand has 56 places, 47 transitions, 115 flow. Second operand 3 states and 112 transitions. [2023-11-29 01:46:21,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 68 transitions, 295 flow [2023-11-29 01:46:21,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 68 transitions, 271 flow, removed 0 selfloop flow, removed 7 redundant places. [2023-11-29 01:46:21,665 INFO L231 Difference]: Finished difference. Result has 50 places, 51 transitions, 167 flow [2023-11-29 01:46:21,667 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=167, PETRI_PLACES=50, PETRI_TRANSITIONS=51} [2023-11-29 01:46:21,671 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -6 predicate places. [2023-11-29 01:46:21,671 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 51 transitions, 167 flow [2023-11-29 01:46:21,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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 01:46:21,672 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:46:21,672 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-29 01:46:21,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 01:46:21,672 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-11-29 01:46:21,673 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:46:21,673 INFO L85 PathProgramCache]: Analyzing trace with hash 464990857, now seen corresponding path program 1 times [2023-11-29 01:46:21,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:46:21,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652449214] [2023-11-29 01:46:21,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:46:21,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:46:21,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:46:21,753 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 01:46:21,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:46:21,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652449214] [2023-11-29 01:46:21,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652449214] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:46:21,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:46:21,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 01:46:21,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090715016] [2023-11-29 01:46:21,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:46:21,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:46:21,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:46:21,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:46:21,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:46:21,760 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2023-11-29 01:46:21,760 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 51 transitions, 167 flow. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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 01:46:21,760 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:46:21,760 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2023-11-29 01:46:21,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:46:24,730 INFO L124 PetriNetUnfolderBase]: 33531/41659 cut-off events. [2023-11-29 01:46:24,730 INFO L125 PetriNetUnfolderBase]: For 2981/2981 co-relation queries the response was YES. [2023-11-29 01:46:24,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111999 conditions, 41659 events. 33531/41659 cut-off events. For 2981/2981 co-relation queries the response was YES. Maximal size of possible extension queue 3191. Compared 207471 event pairs, 13431 based on Foata normal form. 0/19473 useless extension candidates. Maximal degree in co-relation 49753. Up to 29001 conditions per place. [2023-11-29 01:46:24,974 INFO L140 encePairwiseOnDemand]: 49/53 looper letters, 71 selfloop transitions, 3 changer transitions 0/82 dead transitions. [2023-11-29 01:46:24,974 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 82 transitions, 410 flow [2023-11-29 01:46:24,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:46:24,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 01:46:24,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 108 transitions. [2023-11-29 01:46:24,976 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6792452830188679 [2023-11-29 01:46:24,976 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 108 transitions. [2023-11-29 01:46:24,977 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 108 transitions. [2023-11-29 01:46:24,977 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:46:24,978 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 108 transitions. [2023-11-29 01:46:24,979 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 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 01:46:24,981 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 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 01:46:24,981 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 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 01:46:24,981 INFO L175 Difference]: Start difference. First operand has 50 places, 51 transitions, 167 flow. Second operand 3 states and 108 transitions. [2023-11-29 01:46:24,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 82 transitions, 410 flow [2023-11-29 01:46:24,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 82 transitions, 405 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 01:46:24,985 INFO L231 Difference]: Finished difference. Result has 52 places, 50 transitions, 171 flow [2023-11-29 01:46:24,985 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=171, PETRI_PLACES=52, PETRI_TRANSITIONS=50} [2023-11-29 01:46:24,986 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -4 predicate places. [2023-11-29 01:46:24,986 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 50 transitions, 171 flow [2023-11-29 01:46:24,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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 01:46:24,987 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:46:24,987 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2023-11-29 01:46:24,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 01:46:24,987 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-11-29 01:46:24,988 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:46:24,988 INFO L85 PathProgramCache]: Analyzing trace with hash 179632525, now seen corresponding path program 1 times [2023-11-29 01:46:24,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:46:24,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011759568] [2023-11-29 01:46:24,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:46:24,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:46:25,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:46:25,060 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 01:46:25,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:46:25,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011759568] [2023-11-29 01:46:25,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011759568] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:46:25,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [345237670] [2023-11-29 01:46:25,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:46:25,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:46:25,062 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25e8c9d0-66c6-4054-9dbc-7ae39a6ae2ae/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:46:25,063 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25e8c9d0-66c6-4054-9dbc-7ae39a6ae2ae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:46:25,070 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25e8c9d0-66c6-4054-9dbc-7ae39a6ae2ae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 01:46:25,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:46:25,177 INFO L262 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 01:46:25,182 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:46:25,228 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 01:46:25,228 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:46:25,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [345237670] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:46:25,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:46:25,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-11-29 01:46:25,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746333096] [2023-11-29 01:46:25,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:46:25,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:46:25,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:46:25,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:46:25,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:46:25,231 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2023-11-29 01:46:25,231 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 50 transitions, 171 flow. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 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 01:46:25,231 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:46:25,231 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2023-11-29 01:46:25,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:46:28,695 INFO L124 PetriNetUnfolderBase]: 40585/50718 cut-off events. [2023-11-29 01:46:28,695 INFO L125 PetriNetUnfolderBase]: For 8345/8722 co-relation queries the response was YES. [2023-11-29 01:46:28,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139818 conditions, 50718 events. 40585/50718 cut-off events. For 8345/8722 co-relation queries the response was YES. Maximal size of possible extension queue 3734. Compared 268347 event pairs, 7034 based on Foata normal form. 0/26487 useless extension candidates. Maximal degree in co-relation 42467. Up to 34553 conditions per place. [2023-11-29 01:46:28,962 INFO L140 encePairwiseOnDemand]: 34/53 looper letters, 52 selfloop transitions, 22 changer transitions 0/82 dead transitions. [2023-11-29 01:46:28,962 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 82 transitions, 429 flow [2023-11-29 01:46:28,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:46:28,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 01:46:28,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 120 transitions. [2023-11-29 01:46:28,964 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5660377358490566 [2023-11-29 01:46:28,964 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 120 transitions. [2023-11-29 01:46:28,964 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 120 transitions. [2023-11-29 01:46:28,965 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:46:28,965 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 120 transitions. [2023-11-29 01:46:28,966 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 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 01:46:28,967 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 53.0) internal successors, (265), 5 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 01:46:28,968 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 53.0) internal successors, (265), 5 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 01:46:28,968 INFO L175 Difference]: Start difference. First operand has 52 places, 50 transitions, 171 flow. Second operand 4 states and 120 transitions. [2023-11-29 01:46:28,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 82 transitions, 429 flow [2023-11-29 01:46:28,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 82 transitions, 425 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 01:46:28,975 INFO L231 Difference]: Finished difference. Result has 54 places, 65 transitions, 357 flow [2023-11-29 01:46:28,975 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=357, PETRI_PLACES=54, PETRI_TRANSITIONS=65} [2023-11-29 01:46:28,976 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -2 predicate places. [2023-11-29 01:46:28,976 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 65 transitions, 357 flow [2023-11-29 01:46:28,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 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 01:46:28,976 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:46:28,977 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2023-11-29 01:46:28,986 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25e8c9d0-66c6-4054-9dbc-7ae39a6ae2ae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 01:46:29,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25e8c9d0-66c6-4054-9dbc-7ae39a6ae2ae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:46:29,177 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-11-29 01:46:29,178 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:46:29,178 INFO L85 PathProgramCache]: Analyzing trace with hash 179632528, now seen corresponding path program 1 times [2023-11-29 01:46:29,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:46:29,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840944532] [2023-11-29 01:46:29,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:46:29,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:46:29,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:46:29,240 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 01:46:29,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:46:29,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840944532] [2023-11-29 01:46:29,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840944532] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:46:29,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1127925688] [2023-11-29 01:46:29,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:46:29,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:46:29,242 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25e8c9d0-66c6-4054-9dbc-7ae39a6ae2ae/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:46:29,243 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25e8c9d0-66c6-4054-9dbc-7ae39a6ae2ae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:46:29,246 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25e8c9d0-66c6-4054-9dbc-7ae39a6ae2ae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 01:46:29,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:46:29,331 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 01:46:29,332 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:46:29,348 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 01:46:29,349 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:46:29,374 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 01:46:29,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1127925688] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:46:29,374 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:46:29,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-11-29 01:46:29,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393023263] [2023-11-29 01:46:29,375 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:46:29,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 01:46:29,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:46:29,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 01:46:29,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:46:29,383 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2023-11-29 01:46:29,383 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 65 transitions, 357 flow. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 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 01:46:29,384 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:46:29,384 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2023-11-29 01:46:29,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:46:39,056 INFO L124 PetriNetUnfolderBase]: 102975/127493 cut-off events. [2023-11-29 01:46:39,057 INFO L125 PetriNetUnfolderBase]: For 96379/96379 co-relation queries the response was YES. [2023-11-29 01:46:39,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 479456 conditions, 127493 events. 102975/127493 cut-off events. For 96379/96379 co-relation queries the response was YES. Maximal size of possible extension queue 6749. Compared 700889 event pairs, 9679 based on Foata normal form. 0/80042 useless extension candidates. Maximal degree in co-relation 292877. Up to 86795 conditions per place. [2023-11-29 01:46:40,125 INFO L140 encePairwiseOnDemand]: 49/53 looper letters, 257 selfloop transitions, 18 changer transitions 0/283 dead transitions. [2023-11-29 01:46:40,125 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 283 transitions, 2099 flow [2023-11-29 01:46:40,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 01:46:40,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 01:46:40,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 271 transitions. [2023-11-29 01:46:40,128 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7304582210242587 [2023-11-29 01:46:40,128 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 271 transitions. [2023-11-29 01:46:40,128 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 271 transitions. [2023-11-29 01:46:40,129 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:46:40,129 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 271 transitions. [2023-11-29 01:46:40,131 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 38.714285714285715) internal successors, (271), 7 states have internal predecessors, (271), 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 01:46:40,133 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 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 01:46:40,133 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 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 01:46:40,133 INFO L175 Difference]: Start difference. First operand has 54 places, 65 transitions, 357 flow. Second operand 7 states and 271 transitions. [2023-11-29 01:46:40,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 283 transitions, 2099 flow [2023-11-29 01:46:40,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 283 transitions, 1924 flow, removed 87 selfloop flow, removed 1 redundant places. [2023-11-29 01:46:40,192 INFO L231 Difference]: Finished difference. Result has 62 places, 77 transitions, 489 flow [2023-11-29 01:46:40,192 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=322, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=489, PETRI_PLACES=62, PETRI_TRANSITIONS=77} [2023-11-29 01:46:40,193 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 6 predicate places. [2023-11-29 01:46:40,194 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 77 transitions, 489 flow [2023-11-29 01:46:40,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 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 01:46:40,194 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:46:40,194 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2023-11-29 01:46:40,199 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25e8c9d0-66c6-4054-9dbc-7ae39a6ae2ae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 01:46:40,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25e8c9d0-66c6-4054-9dbc-7ae39a6ae2ae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:46:40,395 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-11-29 01:46:40,396 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:46:40,396 INFO L85 PathProgramCache]: Analyzing trace with hash 179632526, now seen corresponding path program 1 times [2023-11-29 01:46:40,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:46:40,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809367672] [2023-11-29 01:46:40,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:46:40,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:46:40,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:46:40,449 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 01:46:40,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:46:40,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809367672] [2023-11-29 01:46:40,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809367672] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:46:40,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [194176858] [2023-11-29 01:46:40,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:46:40,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:46:40,451 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25e8c9d0-66c6-4054-9dbc-7ae39a6ae2ae/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:46:40,452 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25e8c9d0-66c6-4054-9dbc-7ae39a6ae2ae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:46:40,457 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25e8c9d0-66c6-4054-9dbc-7ae39a6ae2ae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 01:46:40,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:46:40,544 INFO L262 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 01:46:40,545 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:46:40,559 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 01:46:40,560 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:46:40,581 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 01:46:40,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [194176858] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:46:40,582 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:46:40,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-11-29 01:46:40,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321685295] [2023-11-29 01:46:40,582 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:46:40,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 01:46:40,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:46:40,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 01:46:40,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:46:40,584 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2023-11-29 01:46:40,585 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 77 transitions, 489 flow. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 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 01:46:40,585 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:46:40,585 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2023-11-29 01:46:40,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:46:59,071 INFO L124 PetriNetUnfolderBase]: 184557/234902 cut-off events. [2023-11-29 01:46:59,071 INFO L125 PetriNetUnfolderBase]: For 280048/281034 co-relation queries the response was YES. [2023-11-29 01:46:59,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 812766 conditions, 234902 events. 184557/234902 cut-off events. For 280048/281034 co-relation queries the response was YES. Maximal size of possible extension queue 12175. Compared 1470884 event pairs, 14600 based on Foata normal form. 24443/178983 useless extension candidates. Maximal degree in co-relation 408787. Up to 112941 conditions per place. [2023-11-29 01:47:00,986 INFO L140 encePairwiseOnDemand]: 36/53 looper letters, 144 selfloop transitions, 82 changer transitions 0/234 dead transitions. [2023-11-29 01:47:00,986 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 234 transitions, 1878 flow [2023-11-29 01:47:00,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 01:47:00,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 01:47:00,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 239 transitions. [2023-11-29 01:47:00,989 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7515723270440252 [2023-11-29 01:47:00,989 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 239 transitions. [2023-11-29 01:47:00,989 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 239 transitions. [2023-11-29 01:47:00,990 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:47:00,990 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 239 transitions. [2023-11-29 01:47:00,991 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 39.833333333333336) internal successors, (239), 6 states have internal predecessors, (239), 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 01:47:00,993 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 53.0) internal successors, (371), 7 states have internal predecessors, (371), 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 01:47:00,994 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 53.0) internal successors, (371), 7 states have internal predecessors, (371), 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 01:47:00,994 INFO L175 Difference]: Start difference. First operand has 62 places, 77 transitions, 489 flow. Second operand 6 states and 239 transitions. [2023-11-29 01:47:00,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 234 transitions, 1878 flow [2023-11-29 01:47:01,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 234 transitions, 1785 flow, removed 42 selfloop flow, removed 1 redundant places. [2023-11-29 01:47:01,494 INFO L231 Difference]: Finished difference. Result has 70 places, 154 transitions, 1539 flow [2023-11-29 01:47:01,494 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=461, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1539, PETRI_PLACES=70, PETRI_TRANSITIONS=154} [2023-11-29 01:47:01,495 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 14 predicate places. [2023-11-29 01:47:01,495 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 154 transitions, 1539 flow [2023-11-29 01:47:01,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 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 01:47:01,496 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:47:01,496 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2023-11-29 01:47:01,500 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25e8c9d0-66c6-4054-9dbc-7ae39a6ae2ae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 01:47:01,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25e8c9d0-66c6-4054-9dbc-7ae39a6ae2ae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:47:01,697 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-11-29 01:47:01,697 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:47:01,697 INFO L85 PathProgramCache]: Analyzing trace with hash 179632527, now seen corresponding path program 1 times [2023-11-29 01:47:01,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:47:01,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501599879] [2023-11-29 01:47:01,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:47:01,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:47:01,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:47:01,754 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 01:47:01,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:47:01,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501599879] [2023-11-29 01:47:01,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501599879] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:47:01,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1917600624] [2023-11-29 01:47:01,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:47:01,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:47:01,755 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25e8c9d0-66c6-4054-9dbc-7ae39a6ae2ae/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:47:01,756 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25e8c9d0-66c6-4054-9dbc-7ae39a6ae2ae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:47:01,757 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25e8c9d0-66c6-4054-9dbc-7ae39a6ae2ae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 01:47:01,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:47:01,840 INFO L262 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 01:47:01,841 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:47:01,864 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 01:47:01,865 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:47:01,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1917600624] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:47:01,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:47:01,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-11-29 01:47:01,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149649396] [2023-11-29 01:47:01,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:47:01,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:47:01,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:47:01,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:47:01,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:47:01,870 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2023-11-29 01:47:01,870 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 154 transitions, 1539 flow. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 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 01:47:01,870 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:47:01,871 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2023-11-29 01:47:01,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:47:22,093 INFO L124 PetriNetUnfolderBase]: 167129/213917 cut-off events. [2023-11-29 01:47:22,094 INFO L125 PetriNetUnfolderBase]: For 468870/468870 co-relation queries the response was YES. [2023-11-29 01:47:22,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 945107 conditions, 213917 events. 167129/213917 cut-off events. For 468870/468870 co-relation queries the response was YES. Maximal size of possible extension queue 11706. Compared 1361888 event pairs, 32017 based on Foata normal form. 4112/151050 useless extension candidates. Maximal degree in co-relation 608119. Up to 174110 conditions per place. [2023-11-29 01:47:24,071 INFO L140 encePairwiseOnDemand]: 50/53 looper letters, 179 selfloop transitions, 9 changer transitions 0/196 dead transitions. [2023-11-29 01:47:24,072 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 196 transitions, 2118 flow [2023-11-29 01:47:24,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:47:24,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 01:47:24,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 114 transitions. [2023-11-29 01:47:24,073 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5377358490566038 [2023-11-29 01:47:24,074 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 114 transitions. [2023-11-29 01:47:24,074 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 114 transitions. [2023-11-29 01:47:24,074 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:47:24,074 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 114 transitions. [2023-11-29 01:47:24,075 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 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 01:47:24,076 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 53.0) internal successors, (265), 5 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 01:47:24,076 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 53.0) internal successors, (265), 5 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 01:47:24,076 INFO L175 Difference]: Start difference. First operand has 70 places, 154 transitions, 1539 flow. Second operand 4 states and 114 transitions. [2023-11-29 01:47:24,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 196 transitions, 2118 flow [2023-11-29 01:47:50,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 196 transitions, 2070 flow, removed 24 selfloop flow, removed 0 redundant places. [2023-11-29 01:47:50,274 INFO L231 Difference]: Finished difference. Result has 71 places, 126 transitions, 1178 flow [2023-11-29 01:47:50,275 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1160, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1178, PETRI_PLACES=71, PETRI_TRANSITIONS=126} [2023-11-29 01:47:50,275 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 15 predicate places. [2023-11-29 01:47:50,276 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 126 transitions, 1178 flow [2023-11-29 01:47:50,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 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 01:47:50,276 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:47:50,276 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:47:50,281 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25e8c9d0-66c6-4054-9dbc-7ae39a6ae2ae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 01:47:50,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25e8c9d0-66c6-4054-9dbc-7ae39a6ae2ae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-29 01:47:50,476 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-11-29 01:47:50,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:47:50,477 INFO L85 PathProgramCache]: Analyzing trace with hash 1988547082, now seen corresponding path program 1 times [2023-11-29 01:47:50,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:47:50,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571324470] [2023-11-29 01:47:50,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:47:50,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:47:50,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:47:50,517 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 01:47:50,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:47:50,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571324470] [2023-11-29 01:47:50,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571324470] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:47:50,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:47:50,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 01:47:50,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510153181] [2023-11-29 01:47:50,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:47:50,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:47:50,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:47:50,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:47:50,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:47:50,521 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2023-11-29 01:47:50,521 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 126 transitions, 1178 flow. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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 01:47:50,521 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:47:50,521 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2023-11-29 01:47:50,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:48:10,703 INFO L124 PetriNetUnfolderBase]: 171603/224522 cut-off events. [2023-11-29 01:48:10,703 INFO L125 PetriNetUnfolderBase]: For 481792/482723 co-relation queries the response was YES. [2023-11-29 01:48:11,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 969104 conditions, 224522 events. 171603/224522 cut-off events. For 481792/482723 co-relation queries the response was YES. Maximal size of possible extension queue 11569. Compared 1501195 event pairs, 20766 based on Foata normal form. 98/159817 useless extension candidates. Maximal degree in co-relation 813368. Up to 180839 conditions per place. [2023-11-29 01:48:12,683 INFO L140 encePairwiseOnDemand]: 49/53 looper letters, 184 selfloop transitions, 9 changer transitions 0/201 dead transitions. [2023-11-29 01:48:12,683 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 201 transitions, 2286 flow [2023-11-29 01:48:12,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:48:12,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 01:48:12,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 98 transitions. [2023-11-29 01:48:12,685 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6163522012578616 [2023-11-29 01:48:12,685 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 98 transitions. [2023-11-29 01:48:12,685 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 98 transitions. [2023-11-29 01:48:12,685 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:48:12,685 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 98 transitions. [2023-11-29 01:48:12,686 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 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 01:48:12,686 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 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 01:48:12,687 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 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 01:48:12,687 INFO L175 Difference]: Start difference. First operand has 71 places, 126 transitions, 1178 flow. Second operand 3 states and 98 transitions. [2023-11-29 01:48:12,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 201 transitions, 2286 flow [2023-11-29 01:49:44,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 201 transitions, 2276 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 01:49:44,093 INFO L231 Difference]: Finished difference. Result has 72 places, 131 transitions, 1272 flow [2023-11-29 01:49:44,093 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1144, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1272, PETRI_PLACES=72, PETRI_TRANSITIONS=131} [2023-11-29 01:49:44,094 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 16 predicate places. [2023-11-29 01:49:44,094 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 131 transitions, 1272 flow [2023-11-29 01:49:44,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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 01:49:44,094 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:49:44,094 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:49:44,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 01:49:44,094 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-11-29 01:49:44,095 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:49:44,095 INFO L85 PathProgramCache]: Analyzing trace with hash -118276143, now seen corresponding path program 1 times [2023-11-29 01:49:44,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:49:44,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550123963] [2023-11-29 01:49:44,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:49:44,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:49:44,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:49:44,141 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 01:49:44,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:49:44,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550123963] [2023-11-29 01:49:44,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550123963] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:49:44,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:49:44,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 01:49:44,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259005584] [2023-11-29 01:49:44,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:49:44,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:49:44,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:49:44,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:49:44,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:49:44,146 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2023-11-29 01:49:44,146 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 131 transitions, 1272 flow. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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 01:49:44,147 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:49:44,147 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2023-11-29 01:49:44,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:50:08,783 INFO L124 PetriNetUnfolderBase]: 185205/249072 cut-off events. [2023-11-29 01:50:08,783 INFO L125 PetriNetUnfolderBase]: For 622606/623236 co-relation queries the response was YES. [2023-11-29 01:50:09,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1093127 conditions, 249072 events. 185205/249072 cut-off events. For 622606/623236 co-relation queries the response was YES. Maximal size of possible extension queue 13397. Compared 1840393 event pairs, 39337 based on Foata normal form. 0/185885 useless extension candidates. Maximal degree in co-relation 916850. Up to 172069 conditions per place. [2023-11-29 01:50:11,234 INFO L140 encePairwiseOnDemand]: 49/53 looper letters, 227 selfloop transitions, 5 changer transitions 0/240 dead transitions. [2023-11-29 01:50:11,235 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 240 transitions, 2861 flow [2023-11-29 01:50:11,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:50:11,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 01:50:11,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 100 transitions. [2023-11-29 01:50:11,236 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6289308176100629 [2023-11-29 01:50:11,236 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 100 transitions. [2023-11-29 01:50:11,236 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 100 transitions. [2023-11-29 01:50:11,236 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:50:11,236 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 100 transitions. [2023-11-29 01:50:11,237 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 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 01:50:11,237 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 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 01:50:11,238 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 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 01:50:11,238 INFO L175 Difference]: Start difference. First operand has 72 places, 131 transitions, 1272 flow. Second operand 3 states and 100 transitions. [2023-11-29 01:50:11,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 240 transitions, 2861 flow [2023-11-29 01:51:03,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 240 transitions, 2845 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 01:51:03,613 INFO L231 Difference]: Finished difference. Result has 74 places, 135 transitions, 1340 flow [2023-11-29 01:51:03,613 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1263, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1340, PETRI_PLACES=74, PETRI_TRANSITIONS=135} [2023-11-29 01:51:03,614 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 18 predicate places. [2023-11-29 01:51:03,614 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 135 transitions, 1340 flow [2023-11-29 01:51:03,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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 01:51:03,614 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:51:03,614 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:51:03,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 01:51:03,614 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-11-29 01:51:03,615 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:51:03,615 INFO L85 PathProgramCache]: Analyzing trace with hash -266682672, now seen corresponding path program 1 times [2023-11-29 01:51:03,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:51:03,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075654271] [2023-11-29 01:51:03,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:51:03,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:51:03,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:51:03,653 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 01:51:03,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:51:03,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075654271] [2023-11-29 01:51:03,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075654271] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:51:03,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:51:03,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 01:51:03,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614364756] [2023-11-29 01:51:03,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:51:03,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:51:03,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:51:03,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:51:03,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:51:03,657 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2023-11-29 01:51:03,657 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 135 transitions, 1340 flow. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 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 01:51:03,657 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:51:03,657 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2023-11-29 01:51:03,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:51:23,051 INFO L124 PetriNetUnfolderBase]: 149359/201400 cut-off events. [2023-11-29 01:51:23,051 INFO L125 PetriNetUnfolderBase]: For 598996/602499 co-relation queries the response was YES. [2023-11-29 01:51:23,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 895839 conditions, 201400 events. 149359/201400 cut-off events. For 598996/602499 co-relation queries the response was YES. Maximal size of possible extension queue 10987. Compared 1485598 event pairs, 69923 based on Foata normal form. 114/155961 useless extension candidates. Maximal degree in co-relation 755939. Up to 192750 conditions per place. [2023-11-29 01:51:24,654 INFO L140 encePairwiseOnDemand]: 51/53 looper letters, 119 selfloop transitions, 1 changer transitions 0/128 dead transitions. [2023-11-29 01:51:24,654 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 128 transitions, 1507 flow [2023-11-29 01:51:24,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:51:24,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 01:51:24,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 70 transitions. [2023-11-29 01:51:24,655 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44025157232704404 [2023-11-29 01:51:24,655 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 70 transitions. [2023-11-29 01:51:24,655 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 70 transitions. [2023-11-29 01:51:24,655 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:51:24,655 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 70 transitions. [2023-11-29 01:51:24,655 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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 01:51:24,656 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 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 01:51:24,656 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 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 01:51:24,656 INFO L175 Difference]: Start difference. First operand has 74 places, 135 transitions, 1340 flow. Second operand 3 states and 70 transitions. [2023-11-29 01:51:24,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 128 transitions, 1507 flow [2023-11-29 01:51:47,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 128 transitions, 1502 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 01:51:47,032 INFO L231 Difference]: Finished difference. Result has 74 places, 128 transitions, 1264 flow [2023-11-29 01:51:47,033 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1262, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1264, PETRI_PLACES=74, PETRI_TRANSITIONS=128} [2023-11-29 01:51:47,033 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 18 predicate places. [2023-11-29 01:51:47,033 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 128 transitions, 1264 flow [2023-11-29 01:51:47,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 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 01:51:47,033 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:51:47,034 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:51:47,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 01:51:47,034 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-11-29 01:51:47,034 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:51:47,034 INFO L85 PathProgramCache]: Analyzing trace with hash -266682671, now seen corresponding path program 1 times [2023-11-29 01:51:47,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:51:47,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015191347] [2023-11-29 01:51:47,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:51:47,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:51:47,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:51:47,071 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 01:51:47,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:51:47,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015191347] [2023-11-29 01:51:47,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015191347] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:51:47,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [803188730] [2023-11-29 01:51:47,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:51:47,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:51:47,072 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25e8c9d0-66c6-4054-9dbc-7ae39a6ae2ae/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:51:47,073 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25e8c9d0-66c6-4054-9dbc-7ae39a6ae2ae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:51:47,078 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25e8c9d0-66c6-4054-9dbc-7ae39a6ae2ae/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 01:51:47,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:51:47,150 INFO L262 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 01:51:47,151 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:51:47,167 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 01:51:47,167 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:51:47,189 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 01:51:47,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [803188730] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:51:47,190 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:51:47,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-11-29 01:51:47,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48286266] [2023-11-29 01:51:47,190 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:51:47,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 01:51:47,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:51:47,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 01:51:47,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:51:47,196 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2023-11-29 01:51:47,196 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 128 transitions, 1264 flow. Second operand has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 7 states have internal predecessors, (107), 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 01:51:47,196 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:51:47,197 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2023-11-29 01:51:47,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand