./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-name-comparator-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dff7acf-e88e-4758-8922-58a6f7c4dd49/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dff7acf-e88e-4758-8922-58a6f7c4dd49/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_6dff7acf-e88e-4758-8922-58a6f7c4dd49/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dff7acf-e88e-4758-8922-58a6f7c4dd49/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-name-comparator-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dff7acf-e88e-4758-8922-58a6f7c4dd49/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_6dff7acf-e88e-4758-8922-58a6f7c4dd49/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 e3298e0ac573b72ea1dd21021e341a1c4e9f42cf513c1ea24a79ab2c37c412bc --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 01:11:45,635 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 01:11:45,696 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dff7acf-e88e-4758-8922-58a6f7c4dd49/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-29 01:11:45,701 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 01:11:45,702 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 01:11:45,726 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 01:11:45,727 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 01:11:45,728 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 01:11:45,729 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 01:11:45,729 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 01:11:45,730 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 01:11:45,730 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 01:11:45,731 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 01:11:45,731 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 01:11:45,732 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 01:11:45,732 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 01:11:45,733 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 01:11:45,733 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 01:11:45,734 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 01:11:45,734 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 01:11:45,735 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 01:11:45,738 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 01:11:45,739 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 01:11:45,739 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 01:11:45,739 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-29 01:11:45,740 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 01:11:45,740 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 01:11:45,741 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 01:11:45,741 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 01:11:45,741 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 01:11:45,742 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 01:11:45,742 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 01:11:45,742 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 01:11:45,743 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:11:45,743 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 01:11:45,743 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 01:11:45,743 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 01:11:45,743 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 01:11:45,744 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 01:11:45,744 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 01:11:45,744 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 01:11:45,744 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 01:11:45,745 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 01:11:45,745 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 01:11:45,745 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_6dff7acf-e88e-4758-8922-58a6f7c4dd49/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dff7acf-e88e-4758-8922-58a6f7c4dd49/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e3298e0ac573b72ea1dd21021e341a1c4e9f42cf513c1ea24a79ab2c37c412bc [2023-11-29 01:11:45,953 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 01:11:45,974 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 01:11:45,977 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 01:11:45,978 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 01:11:45,979 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 01:11:45,980 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dff7acf-e88e-4758-8922-58a6f7c4dd49/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/weaver/chl-name-comparator-symm.wvr.c [2023-11-29 01:11:48,767 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 01:11:48,926 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 01:11:48,927 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dff7acf-e88e-4758-8922-58a6f7c4dd49/sv-benchmarks/c/weaver/chl-name-comparator-symm.wvr.c [2023-11-29 01:11:48,939 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dff7acf-e88e-4758-8922-58a6f7c4dd49/bin/uautomizer-verify-BQ2R08f2Ya/data/ebd0821be/5483fe7f441e4350bfba1ef134f6008c/FLAG08e66469d [2023-11-29 01:11:48,950 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dff7acf-e88e-4758-8922-58a6f7c4dd49/bin/uautomizer-verify-BQ2R08f2Ya/data/ebd0821be/5483fe7f441e4350bfba1ef134f6008c [2023-11-29 01:11:48,952 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 01:11:48,953 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 01:11:48,954 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 01:11:48,955 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 01:11:48,960 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 01:11:48,960 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:11:48" (1/1) ... [2023-11-29 01:11:48,962 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62840798 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:11:48, skipping insertion in model container [2023-11-29 01:11:48,962 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:11:48" (1/1) ... [2023-11-29 01:11:48,988 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 01:11:49,146 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:11:49,156 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 01:11:49,190 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:11:49,208 INFO L206 MainTranslator]: Completed translation [2023-11-29 01:11:49,208 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:11:49 WrapperNode [2023-11-29 01:11:49,208 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 01:11:49,209 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 01:11:49,209 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 01:11:49,210 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 01:11:49,217 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:11:49" (1/1) ... [2023-11-29 01:11:49,227 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:11:49" (1/1) ... [2023-11-29 01:11:49,257 INFO L138 Inliner]: procedures = 25, calls = 35, calls flagged for inlining = 15, calls inlined = 17, statements flattened = 267 [2023-11-29 01:11:49,257 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 01:11:49,258 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 01:11:49,258 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 01:11:49,259 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 01:11:49,271 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:11:49" (1/1) ... [2023-11-29 01:11:49,271 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:11:49" (1/1) ... [2023-11-29 01:11:49,276 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:11:49" (1/1) ... [2023-11-29 01:11:49,294 INFO L175 MemorySlicer]: Split 9 memory accesses to 4 slices as follows [2, 3, 2, 2]. 33 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 3 writes are split as follows [0, 1, 1, 1]. [2023-11-29 01:11:49,295 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:11:49" (1/1) ... [2023-11-29 01:11:49,295 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:11:49" (1/1) ... [2023-11-29 01:11:49,305 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:11:49" (1/1) ... [2023-11-29 01:11:49,310 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:11:49" (1/1) ... [2023-11-29 01:11:49,313 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:11:49" (1/1) ... [2023-11-29 01:11:49,315 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:11:49" (1/1) ... [2023-11-29 01:11:49,320 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 01:11:49,321 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 01:11:49,321 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 01:11:49,321 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 01:11:49,322 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:11:49" (1/1) ... [2023-11-29 01:11:49,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:11:49,336 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dff7acf-e88e-4758-8922-58a6f7c4dd49/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:11:49,348 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dff7acf-e88e-4758-8922-58a6f7c4dd49/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 01:11:49,350 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dff7acf-e88e-4758-8922-58a6f7c4dd49/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 01:11:49,376 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 01:11:49,376 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 01:11:49,376 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 01:11:49,376 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-29 01:11:49,377 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-29 01:11:49,377 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-29 01:11:49,377 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-29 01:11:49,377 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-29 01:11:49,377 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-29 01:11:49,377 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-29 01:11:49,378 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-29 01:11:49,378 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-29 01:11:49,378 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-29 01:11:49,378 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-29 01:11:49,378 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 01:11:49,378 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 01:11:49,378 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 01:11:49,379 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-29 01:11:49,379 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-29 01:11:49,379 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 01:11:49,379 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 01:11:49,379 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 01:11:49,381 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 01:11:49,495 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 01:11:49,497 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 01:11:49,878 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 01:11:50,143 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 01:11:50,143 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-29 01:11:50,144 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:11:50 BoogieIcfgContainer [2023-11-29 01:11:50,144 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 01:11:50,146 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 01:11:50,146 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 01:11:50,149 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 01:11:50,149 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 01:11:48" (1/3) ... [2023-11-29 01:11:50,149 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ffce604 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:11:50, skipping insertion in model container [2023-11-29 01:11:50,149 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:11:49" (2/3) ... [2023-11-29 01:11:50,150 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ffce604 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:11:50, skipping insertion in model container [2023-11-29 01:11:50,150 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:11:50" (3/3) ... [2023-11-29 01:11:50,151 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-name-comparator-symm.wvr.c [2023-11-29 01:11:50,159 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-29 01:11:50,167 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 01:11:50,167 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2023-11-29 01:11:50,168 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 01:11:50,224 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-29 01:11:50,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 79 places, 83 transitions, 180 flow [2023-11-29 01:11:50,297 INFO L124 PetriNetUnfolderBase]: 11/81 cut-off events. [2023-11-29 01:11:50,298 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-29 01:11:50,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 81 events. 11/81 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 254 event pairs, 0 based on Foata normal form. 0/50 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2023-11-29 01:11:50,302 INFO L82 GeneralOperation]: Start removeDead. Operand has 79 places, 83 transitions, 180 flow [2023-11-29 01:11:50,307 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 76 places, 80 transitions, 172 flow [2023-11-29 01:11:50,317 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 01:11:50,324 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;@2d234abe, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 01:11:50,324 INFO L358 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2023-11-29 01:11:50,328 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 01:11:50,328 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2023-11-29 01:11:50,328 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 01:11:50,329 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:11:50,329 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-29 01:11:50,330 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-29 01:11:50,334 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:11:50,335 INFO L85 PathProgramCache]: Analyzing trace with hash 766861, now seen corresponding path program 1 times [2023-11-29 01:11:50,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:11:50,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462856873] [2023-11-29 01:11:50,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:11:50,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:11:50,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:11:50,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:11:50,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:11:50,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462856873] [2023-11-29 01:11:50,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462856873] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:11:50,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:11:50,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 01:11:50,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551055945] [2023-11-29 01:11:50,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:11:50,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:11:50,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:11:50,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:11:50,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:11:50,656 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 83 [2023-11-29 01:11:50,659 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 80 transitions, 172 flow. Second operand has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 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 01:11:50,659 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:11:50,659 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 83 [2023-11-29 01:11:50,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:11:50,975 INFO L124 PetriNetUnfolderBase]: 520/1274 cut-off events. [2023-11-29 01:11:50,975 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2023-11-29 01:11:50,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2104 conditions, 1274 events. 520/1274 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 8595 event pairs, 331 based on Foata normal form. 47/1025 useless extension candidates. Maximal degree in co-relation 1966. Up to 790 conditions per place. [2023-11-29 01:11:50,991 INFO L140 encePairwiseOnDemand]: 74/83 looper letters, 33 selfloop transitions, 4 changer transitions 3/75 dead transitions. [2023-11-29 01:11:50,991 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 75 transitions, 238 flow [2023-11-29 01:11:50,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:11:50,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 01:11:51,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 199 transitions. [2023-11-29 01:11:51,005 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5993975903614458 [2023-11-29 01:11:51,006 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 199 transitions. [2023-11-29 01:11:51,006 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 199 transitions. [2023-11-29 01:11:51,008 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:11:51,010 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 199 transitions. [2023-11-29 01:11:51,014 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 49.75) internal successors, (199), 4 states have internal predecessors, (199), 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 01:11:51,018 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 83.0) internal successors, (415), 5 states have internal predecessors, (415), 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 01:11:51,019 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 83.0) internal successors, (415), 5 states have internal predecessors, (415), 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 01:11:51,021 INFO L175 Difference]: Start difference. First operand has 76 places, 80 transitions, 172 flow. Second operand 4 states and 199 transitions. [2023-11-29 01:11:51,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 75 transitions, 238 flow [2023-11-29 01:11:51,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 75 transitions, 230 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-29 01:11:51,029 INFO L231 Difference]: Finished difference. Result has 72 places, 72 transitions, 155 flow [2023-11-29 01:11:51,031 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=155, PETRI_PLACES=72, PETRI_TRANSITIONS=72} [2023-11-29 01:11:51,035 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, -4 predicate places. [2023-11-29 01:11:51,035 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 72 transitions, 155 flow [2023-11-29 01:11:51,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 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 01:11:51,036 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:11:51,036 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-29 01:11:51,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 01:11:51,037 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-29 01:11:51,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:11:51,037 INFO L85 PathProgramCache]: Analyzing trace with hash 23773464, now seen corresponding path program 1 times [2023-11-29 01:11:51,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:11:51,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903122431] [2023-11-29 01:11:51,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:11:51,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:11:51,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:11:51,135 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 01:11:51,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:11:51,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903122431] [2023-11-29 01:11:51,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903122431] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:11:51,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:11:51,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 01:11:51,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706883727] [2023-11-29 01:11:51,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:11:51,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:11:51,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:11:51,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:11:51,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:11:51,146 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 83 [2023-11-29 01:11:51,146 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 72 transitions, 155 flow. Second operand has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 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 01:11:51,147 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:11:51,147 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 83 [2023-11-29 01:11:51,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:11:51,380 INFO L124 PetriNetUnfolderBase]: 521/1275 cut-off events. [2023-11-29 01:11:51,381 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-11-29 01:11:51,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2091 conditions, 1275 events. 521/1275 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 8585 event pairs, 331 based on Foata normal form. 1/980 useless extension candidates. Maximal degree in co-relation 2063. Up to 794 conditions per place. [2023-11-29 01:11:51,392 INFO L140 encePairwiseOnDemand]: 78/83 looper letters, 36 selfloop transitions, 4 changer transitions 0/75 dead transitions. [2023-11-29 01:11:51,392 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 75 transitions, 247 flow [2023-11-29 01:11:51,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:11:51,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 01:11:51,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 197 transitions. [2023-11-29 01:11:51,395 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5933734939759037 [2023-11-29 01:11:51,395 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 197 transitions. [2023-11-29 01:11:51,396 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 197 transitions. [2023-11-29 01:11:51,396 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:11:51,396 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 197 transitions. [2023-11-29 01:11:51,397 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 49.25) internal successors, (197), 4 states have internal predecessors, (197), 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 01:11:51,399 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 83.0) internal successors, (415), 5 states have internal predecessors, (415), 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 01:11:51,399 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 83.0) internal successors, (415), 5 states have internal predecessors, (415), 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 01:11:51,400 INFO L175 Difference]: Start difference. First operand has 72 places, 72 transitions, 155 flow. Second operand 4 states and 197 transitions. [2023-11-29 01:11:51,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 75 transitions, 247 flow [2023-11-29 01:11:51,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 75 transitions, 233 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-29 01:11:51,403 INFO L231 Difference]: Finished difference. Result has 71 places, 75 transitions, 174 flow [2023-11-29 01:11:51,403 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=174, PETRI_PLACES=71, PETRI_TRANSITIONS=75} [2023-11-29 01:11:51,404 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, -5 predicate places. [2023-11-29 01:11:51,404 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 75 transitions, 174 flow [2023-11-29 01:11:51,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 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 01:11:51,405 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:11:51,405 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2023-11-29 01:11:51,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 01:11:51,405 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-29 01:11:51,406 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:11:51,406 INFO L85 PathProgramCache]: Analyzing trace with hash -433533213, now seen corresponding path program 1 times [2023-11-29 01:11:51,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:11:51,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137476851] [2023-11-29 01:11:51,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:11:51,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:11:51,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:11:51,492 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:11:51,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:11:51,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137476851] [2023-11-29 01:11:51,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137476851] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:11:51,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2104668885] [2023-11-29 01:11:51,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:11:51,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:11:51,494 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dff7acf-e88e-4758-8922-58a6f7c4dd49/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:11:51,495 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dff7acf-e88e-4758-8922-58a6f7c4dd49/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:11:51,503 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dff7acf-e88e-4758-8922-58a6f7c4dd49/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 01:11:51,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:11:51,592 INFO L262 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 01:11:51,596 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:11:51,629 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:11:51,629 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:11:51,670 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:11:51,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2104668885] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:11:51,671 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:11:51,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2023-11-29 01:11:51,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051265126] [2023-11-29 01:11:51,671 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:11:51,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 01:11:51,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:11:51,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 01:11:51,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-11-29 01:11:51,684 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 83 [2023-11-29 01:11:51,685 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 75 transitions, 174 flow. Second operand has 10 states, 10 states have (on average 40.0) internal successors, (400), 10 states have internal predecessors, (400), 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 01:11:51,686 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:11:51,686 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 83 [2023-11-29 01:11:51,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:11:51,951 INFO L124 PetriNetUnfolderBase]: 524/1287 cut-off events. [2023-11-29 01:11:51,951 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2023-11-29 01:11:51,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2127 conditions, 1287 events. 524/1287 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 8672 event pairs, 331 based on Foata normal form. 0/988 useless extension candidates. Maximal degree in co-relation 2070. Up to 797 conditions per place. [2023-11-29 01:11:51,959 INFO L140 encePairwiseOnDemand]: 78/83 looper letters, 36 selfloop transitions, 13 changer transitions 0/84 dead transitions. [2023-11-29 01:11:51,959 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 84 transitions, 308 flow [2023-11-29 01:11:51,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 01:11:51,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 01:11:51,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 442 transitions. [2023-11-29 01:11:51,962 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5325301204819277 [2023-11-29 01:11:51,962 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 442 transitions. [2023-11-29 01:11:51,963 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 442 transitions. [2023-11-29 01:11:51,963 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:11:51,963 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 442 transitions. [2023-11-29 01:11:51,965 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 44.2) internal successors, (442), 10 states have internal predecessors, (442), 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 01:11:51,968 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 83.0) internal successors, (913), 11 states have internal predecessors, (913), 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 01:11:51,969 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 83.0) internal successors, (913), 11 states have internal predecessors, (913), 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 01:11:51,969 INFO L175 Difference]: Start difference. First operand has 71 places, 75 transitions, 174 flow. Second operand 10 states and 442 transitions. [2023-11-29 01:11:51,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 84 transitions, 308 flow [2023-11-29 01:11:51,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 84 transitions, 305 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 01:11:51,972 INFO L231 Difference]: Finished difference. Result has 82 places, 84 transitions, 251 flow [2023-11-29 01:11:51,972 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=251, PETRI_PLACES=82, PETRI_TRANSITIONS=84} [2023-11-29 01:11:51,973 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 6 predicate places. [2023-11-29 01:11:51,973 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 84 transitions, 251 flow [2023-11-29 01:11:51,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 40.0) internal successors, (400), 10 states have internal predecessors, (400), 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 01:11:51,974 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:11:51,974 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:11:51,982 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dff7acf-e88e-4758-8922-58a6f7c4dd49/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 01:11:52,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dff7acf-e88e-4758-8922-58a6f7c4dd49/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:11:52,175 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-29 01:11:52,175 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:11:52,176 INFO L85 PathProgramCache]: Analyzing trace with hash -315727857, now seen corresponding path program 1 times [2023-11-29 01:11:52,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:11:52,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425584475] [2023-11-29 01:11:52,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:11:52,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:11:52,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:11:52,243 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 01:11:52,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:11:52,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425584475] [2023-11-29 01:11:52,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425584475] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:11:52,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:11:52,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:11:52,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880943223] [2023-11-29 01:11:52,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:11:52,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:11:52,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:11:52,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:11:52,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:11:52,252 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 83 [2023-11-29 01:11:52,253 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 84 transitions, 251 flow. Second operand has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 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 01:11:52,253 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:11:52,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 83 [2023-11-29 01:11:52,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:11:52,589 INFO L124 PetriNetUnfolderBase]: 1120/2563 cut-off events. [2023-11-29 01:11:52,589 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2023-11-29 01:11:52,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4346 conditions, 2563 events. 1120/2563 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 19278 event pairs, 427 based on Foata normal form. 26/2044 useless extension candidates. Maximal degree in co-relation 4310. Up to 936 conditions per place. [2023-11-29 01:11:52,605 INFO L140 encePairwiseOnDemand]: 78/83 looper letters, 93 selfloop transitions, 3 changer transitions 0/130 dead transitions. [2023-11-29 01:11:52,605 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 130 transitions, 538 flow [2023-11-29 01:11:52,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:11:52,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 01:11:52,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 242 transitions. [2023-11-29 01:11:52,607 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7289156626506024 [2023-11-29 01:11:52,607 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 242 transitions. [2023-11-29 01:11:52,607 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 242 transitions. [2023-11-29 01:11:52,607 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:11:52,607 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 242 transitions. [2023-11-29 01:11:52,608 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 60.5) internal successors, (242), 4 states have internal predecessors, (242), 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 01:11:52,609 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 83.0) internal successors, (415), 5 states have internal predecessors, (415), 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 01:11:52,609 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 83.0) internal successors, (415), 5 states have internal predecessors, (415), 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 01:11:52,610 INFO L175 Difference]: Start difference. First operand has 82 places, 84 transitions, 251 flow. Second operand 4 states and 242 transitions. [2023-11-29 01:11:52,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 130 transitions, 538 flow [2023-11-29 01:11:52,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 130 transitions, 508 flow, removed 11 selfloop flow, removed 3 redundant places. [2023-11-29 01:11:52,614 INFO L231 Difference]: Finished difference. Result has 84 places, 86 transitions, 243 flow [2023-11-29 01:11:52,614 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=221, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=243, PETRI_PLACES=84, PETRI_TRANSITIONS=86} [2023-11-29 01:11:52,615 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 8 predicate places. [2023-11-29 01:11:52,615 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 86 transitions, 243 flow [2023-11-29 01:11:52,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 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 01:11:52,616 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:11:52,616 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:11:52,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 01:11:52,616 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-29 01:11:52,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:11:52,617 INFO L85 PathProgramCache]: Analyzing trace with hash -530388614, now seen corresponding path program 1 times [2023-11-29 01:11:52,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:11:52,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570737077] [2023-11-29 01:11:52,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:11:52,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:11:52,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:11:52,679 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 01:11:52,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:11:52,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570737077] [2023-11-29 01:11:52,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570737077] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:11:52,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:11:52,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:11:52,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221169577] [2023-11-29 01:11:52,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:11:52,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:11:52,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:11:52,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:11:52,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:11:52,687 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 83 [2023-11-29 01:11:52,688 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 86 transitions, 243 flow. Second operand has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 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 01:11:52,688 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:11:52,688 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 83 [2023-11-29 01:11:52,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:11:53,222 INFO L124 PetriNetUnfolderBase]: 2089/4804 cut-off events. [2023-11-29 01:11:53,222 INFO L125 PetriNetUnfolderBase]: For 439/522 co-relation queries the response was YES. [2023-11-29 01:11:53,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8333 conditions, 4804 events. 2089/4804 cut-off events. For 439/522 co-relation queries the response was YES. Maximal size of possible extension queue 280. Compared 40475 event pairs, 827 based on Foata normal form. 50/3921 useless extension candidates. Maximal degree in co-relation 8299. Up to 1768 conditions per place. [2023-11-29 01:11:53,251 INFO L140 encePairwiseOnDemand]: 78/83 looper letters, 97 selfloop transitions, 3 changer transitions 0/134 dead transitions. [2023-11-29 01:11:53,251 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 134 transitions, 569 flow [2023-11-29 01:11:53,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:11:53,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 01:11:53,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 240 transitions. [2023-11-29 01:11:53,253 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7228915662650602 [2023-11-29 01:11:53,253 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 240 transitions. [2023-11-29 01:11:53,253 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 240 transitions. [2023-11-29 01:11:53,253 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:11:53,253 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 240 transitions. [2023-11-29 01:11:53,254 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 60.0) internal successors, (240), 4 states have internal predecessors, (240), 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 01:11:53,255 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 83.0) internal successors, (415), 5 states have internal predecessors, (415), 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 01:11:53,255 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 83.0) internal successors, (415), 5 states have internal predecessors, (415), 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 01:11:53,255 INFO L175 Difference]: Start difference. First operand has 84 places, 86 transitions, 243 flow. Second operand 4 states and 240 transitions. [2023-11-29 01:11:53,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 134 transitions, 569 flow [2023-11-29 01:11:53,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 134 transitions, 563 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 01:11:53,260 INFO L231 Difference]: Finished difference. Result has 88 places, 88 transitions, 263 flow [2023-11-29 01:11:53,260 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=241, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=263, PETRI_PLACES=88, PETRI_TRANSITIONS=88} [2023-11-29 01:11:53,261 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 12 predicate places. [2023-11-29 01:11:53,261 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 88 transitions, 263 flow [2023-11-29 01:11:53,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 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 01:11:53,262 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:11:53,262 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:11:53,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 01:11:53,262 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-29 01:11:53,263 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:11:53,263 INFO L85 PathProgramCache]: Analyzing trace with hash 129631603, now seen corresponding path program 1 times [2023-11-29 01:11:53,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:11:53,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282366258] [2023-11-29 01:11:53,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:11:53,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:11:53,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:11:53,313 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 01:11:53,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:11:53,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282366258] [2023-11-29 01:11:53,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282366258] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:11:53,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:11:53,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 01:11:53,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778541875] [2023-11-29 01:11:53,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:11:53,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:11:53,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:11:53,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:11:53,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:11:53,316 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 83 [2023-11-29 01:11:53,316 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 88 transitions, 263 flow. Second operand has 4 states, 4 states have (on average 42.75) internal successors, (171), 4 states have internal predecessors, (171), 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 01:11:53,316 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:11:53,316 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 83 [2023-11-29 01:11:53,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:11:53,821 INFO L124 PetriNetUnfolderBase]: 1670/3737 cut-off events. [2023-11-29 01:11:53,821 INFO L125 PetriNetUnfolderBase]: For 662/760 co-relation queries the response was YES. [2023-11-29 01:11:53,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6998 conditions, 3737 events. 1670/3737 cut-off events. For 662/760 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 29278 event pairs, 643 based on Foata normal form. 0/3193 useless extension candidates. Maximal degree in co-relation 6962. Up to 1440 conditions per place. [2023-11-29 01:11:53,852 INFO L140 encePairwiseOnDemand]: 78/83 looper letters, 105 selfloop transitions, 4 changer transitions 6/151 dead transitions. [2023-11-29 01:11:53,852 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 151 transitions, 666 flow [2023-11-29 01:11:53,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 01:11:53,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 01:11:53,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 301 transitions. [2023-11-29 01:11:53,854 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7253012048192771 [2023-11-29 01:11:53,854 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 301 transitions. [2023-11-29 01:11:53,854 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 301 transitions. [2023-11-29 01:11:53,854 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:11:53,855 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 301 transitions. [2023-11-29 01:11:53,856 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 60.2) internal successors, (301), 5 states have internal predecessors, (301), 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 01:11:53,857 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 83.0) internal successors, (498), 6 states have internal predecessors, (498), 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 01:11:53,857 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 83.0) internal successors, (498), 6 states have internal predecessors, (498), 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 01:11:53,857 INFO L175 Difference]: Start difference. First operand has 88 places, 88 transitions, 263 flow. Second operand 5 states and 301 transitions. [2023-11-29 01:11:53,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 151 transitions, 666 flow [2023-11-29 01:11:53,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 151 transitions, 658 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 01:11:53,863 INFO L231 Difference]: Finished difference. Result has 94 places, 90 transitions, 286 flow [2023-11-29 01:11:53,863 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=261, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=286, PETRI_PLACES=94, PETRI_TRANSITIONS=90} [2023-11-29 01:11:53,864 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 18 predicate places. [2023-11-29 01:11:53,864 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 90 transitions, 286 flow [2023-11-29 01:11:53,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.75) internal successors, (171), 4 states have internal predecessors, (171), 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 01:11:53,864 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:11:53,864 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:11:53,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 01:11:53,865 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-29 01:11:53,865 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:11:53,865 INFO L85 PathProgramCache]: Analyzing trace with hash -245863896, now seen corresponding path program 1 times [2023-11-29 01:11:53,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:11:53,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683862760] [2023-11-29 01:11:53,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:11:53,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:11:53,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:11:53,923 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 01:11:53,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:11:53,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683862760] [2023-11-29 01:11:53,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683862760] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:11:53,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:11:53,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 01:11:53,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338384686] [2023-11-29 01:11:53,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:11:53,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:11:53,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:11:53,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:11:53,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:11:53,926 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 83 [2023-11-29 01:11:53,926 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 90 transitions, 286 flow. Second operand has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 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 01:11:53,926 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:11:53,927 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 83 [2023-11-29 01:11:53,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:11:54,447 INFO L124 PetriNetUnfolderBase]: 1637/3816 cut-off events. [2023-11-29 01:11:54,447 INFO L125 PetriNetUnfolderBase]: For 1181/1299 co-relation queries the response was YES. [2023-11-29 01:11:54,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7431 conditions, 3816 events. 1637/3816 cut-off events. For 1181/1299 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 30798 event pairs, 1203 based on Foata normal form. 1/3248 useless extension candidates. Maximal degree in co-relation 7397. Up to 2569 conditions per place. [2023-11-29 01:11:54,481 INFO L140 encePairwiseOnDemand]: 80/83 looper letters, 51 selfloop transitions, 2 changer transitions 0/89 dead transitions. [2023-11-29 01:11:54,482 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 89 transitions, 388 flow [2023-11-29 01:11:54,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:11:54,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 01:11:54,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 162 transitions. [2023-11-29 01:11:54,483 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6506024096385542 [2023-11-29 01:11:54,483 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 162 transitions. [2023-11-29 01:11:54,483 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 162 transitions. [2023-11-29 01:11:54,484 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:11:54,484 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 162 transitions. [2023-11-29 01:11:54,484 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 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 01:11:54,485 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 83.0) internal successors, (332), 4 states have internal predecessors, (332), 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 01:11:54,486 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 83.0) internal successors, (332), 4 states have internal predecessors, (332), 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 01:11:54,486 INFO L175 Difference]: Start difference. First operand has 94 places, 90 transitions, 286 flow. Second operand 3 states and 162 transitions. [2023-11-29 01:11:54,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 89 transitions, 388 flow [2023-11-29 01:11:54,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 89 transitions, 388 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 01:11:54,490 INFO L231 Difference]: Finished difference. Result has 96 places, 89 transitions, 286 flow [2023-11-29 01:11:54,491 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=286, PETRI_PLACES=96, PETRI_TRANSITIONS=89} [2023-11-29 01:11:54,491 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 20 predicate places. [2023-11-29 01:11:54,491 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 89 transitions, 286 flow [2023-11-29 01:11:54,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 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 01:11:54,492 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:11:54,492 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:11:54,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 01:11:54,492 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-29 01:11:54,492 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:11:54,493 INFO L85 PathProgramCache]: Analyzing trace with hash -1448062467, now seen corresponding path program 1 times [2023-11-29 01:11:54,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:11:54,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217284771] [2023-11-29 01:11:54,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:11:54,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:11:54,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:11:54,591 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 01:11:54,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:11:54,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217284771] [2023-11-29 01:11:54,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217284771] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:11:54,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1648157752] [2023-11-29 01:11:54,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:11:54,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:11:54,593 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dff7acf-e88e-4758-8922-58a6f7c4dd49/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:11:54,594 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dff7acf-e88e-4758-8922-58a6f7c4dd49/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:11:54,596 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dff7acf-e88e-4758-8922-58a6f7c4dd49/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 01:11:54,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:11:54,704 INFO L262 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 01:11:54,706 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:11:54,761 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 01:11:54,761 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:11:54,791 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 01:11:54,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1648157752] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:11:54,792 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:11:54,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2023-11-29 01:11:54,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472611561] [2023-11-29 01:11:54,792 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:11:54,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 01:11:54,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:11:54,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 01:11:54,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-29 01:11:54,806 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 83 [2023-11-29 01:11:54,807 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 89 transitions, 286 flow. Second operand has 10 states, 10 states have (on average 40.6) internal successors, (406), 10 states have internal predecessors, (406), 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 01:11:54,807 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:11:54,807 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 83 [2023-11-29 01:11:54,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:11:55,333 INFO L124 PetriNetUnfolderBase]: 1635/3814 cut-off events. [2023-11-29 01:11:55,334 INFO L125 PetriNetUnfolderBase]: For 1187/1305 co-relation queries the response was YES. [2023-11-29 01:11:55,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7429 conditions, 3814 events. 1635/3814 cut-off events. For 1187/1305 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 30730 event pairs, 1203 based on Foata normal form. 2/3247 useless extension candidates. Maximal degree in co-relation 7401. Up to 2561 conditions per place. [2023-11-29 01:11:55,359 INFO L140 encePairwiseOnDemand]: 79/83 looper letters, 42 selfloop transitions, 10 changer transitions 0/87 dead transitions. [2023-11-29 01:11:55,359 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 87 transitions, 382 flow [2023-11-29 01:11:55,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 01:11:55,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 01:11:55,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 317 transitions. [2023-11-29 01:11:55,361 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5456110154905336 [2023-11-29 01:11:55,361 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 317 transitions. [2023-11-29 01:11:55,361 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 317 transitions. [2023-11-29 01:11:55,362 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:11:55,362 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 317 transitions. [2023-11-29 01:11:55,363 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 45.285714285714285) internal successors, (317), 7 states have internal predecessors, (317), 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 01:11:55,365 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 83.0) internal successors, (664), 8 states have internal predecessors, (664), 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 01:11:55,365 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 83.0) internal successors, (664), 8 states have internal predecessors, (664), 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 01:11:55,365 INFO L175 Difference]: Start difference. First operand has 96 places, 89 transitions, 286 flow. Second operand 7 states and 317 transitions. [2023-11-29 01:11:55,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 87 transitions, 382 flow [2023-11-29 01:11:55,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 87 transitions, 378 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 01:11:55,369 INFO L231 Difference]: Finished difference. Result has 100 places, 87 transitions, 294 flow [2023-11-29 01:11:55,369 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=294, PETRI_PLACES=100, PETRI_TRANSITIONS=87} [2023-11-29 01:11:55,370 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 24 predicate places. [2023-11-29 01:11:55,370 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 87 transitions, 294 flow [2023-11-29 01:11:55,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 40.6) internal successors, (406), 10 states have internal predecessors, (406), 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 01:11:55,371 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:11:55,371 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2023-11-29 01:11:55,376 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dff7acf-e88e-4758-8922-58a6f7c4dd49/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 01:11:55,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dff7acf-e88e-4758-8922-58a6f7c4dd49/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:11:55,572 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-29 01:11:55,573 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:11:55,573 INFO L85 PathProgramCache]: Analyzing trace with hash 1790867800, now seen corresponding path program 2 times [2023-11-29 01:11:55,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:11:55,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039254804] [2023-11-29 01:11:55,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:11:55,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:11:55,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:11:55,698 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 21 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 01:11:55,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:11:55,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039254804] [2023-11-29 01:11:55,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039254804] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:11:55,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1868458031] [2023-11-29 01:11:55,699 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 01:11:55,699 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:11:55,700 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dff7acf-e88e-4758-8922-58a6f7c4dd49/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:11:55,705 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dff7acf-e88e-4758-8922-58a6f7c4dd49/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:11:55,708 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dff7acf-e88e-4758-8922-58a6f7c4dd49/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 01:11:55,792 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 01:11:55,792 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:11:55,793 INFO L262 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 01:11:55,794 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:11:55,844 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-29 01:11:55,844 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:11:55,892 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-29 01:11:55,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1868458031] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:11:55,892 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:11:55,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 2, 2] total 12 [2023-11-29 01:11:55,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818404674] [2023-11-29 01:11:55,893 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:11:55,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-29 01:11:55,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:11:55,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-29 01:11:55,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2023-11-29 01:11:55,920 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 83 [2023-11-29 01:11:55,921 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 87 transitions, 294 flow. Second operand has 13 states, 13 states have (on average 40.61538461538461) internal successors, (528), 13 states have internal predecessors, (528), 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 01:11:55,921 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:11:55,921 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 83 [2023-11-29 01:11:55,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:11:56,475 INFO L124 PetriNetUnfolderBase]: 1633/3806 cut-off events. [2023-11-29 01:11:56,475 INFO L125 PetriNetUnfolderBase]: For 1177/1295 co-relation queries the response was YES. [2023-11-29 01:11:56,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7408 conditions, 3806 events. 1633/3806 cut-off events. For 1177/1295 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 30689 event pairs, 1203 based on Foata normal form. 1/3239 useless extension candidates. Maximal degree in co-relation 7393. Up to 2557 conditions per place. [2023-11-29 01:11:56,503 INFO L140 encePairwiseOnDemand]: 79/83 looper letters, 38 selfloop transitions, 8 changer transitions 0/81 dead transitions. [2023-11-29 01:11:56,503 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 81 transitions, 344 flow [2023-11-29 01:11:56,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 01:11:56,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-29 01:11:56,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 392 transitions. [2023-11-29 01:11:56,505 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5247657295850067 [2023-11-29 01:11:56,505 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 392 transitions. [2023-11-29 01:11:56,505 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 392 transitions. [2023-11-29 01:11:56,506 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:11:56,506 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 392 transitions. [2023-11-29 01:11:56,507 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 43.55555555555556) internal successors, (392), 9 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:11:56,509 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 83.0) internal successors, (830), 10 states have internal predecessors, (830), 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 01:11:56,510 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 83.0) internal successors, (830), 10 states have internal predecessors, (830), 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 01:11:56,510 INFO L175 Difference]: Start difference. First operand has 100 places, 87 transitions, 294 flow. Second operand 9 states and 392 transitions. [2023-11-29 01:11:56,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 81 transitions, 344 flow [2023-11-29 01:11:56,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 81 transitions, 316 flow, removed 0 selfloop flow, removed 11 redundant places. [2023-11-29 01:11:56,513 INFO L231 Difference]: Finished difference. Result has 95 places, 81 transitions, 240 flow [2023-11-29 01:11:56,514 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=240, PETRI_PLACES=95, PETRI_TRANSITIONS=81} [2023-11-29 01:11:56,514 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 19 predicate places. [2023-11-29 01:11:56,514 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 81 transitions, 240 flow [2023-11-29 01:11:56,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 40.61538461538461) internal successors, (528), 13 states have internal predecessors, (528), 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 01:11:56,515 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:11:56,515 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:11:56,520 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dff7acf-e88e-4758-8922-58a6f7c4dd49/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 01:11:56,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dff7acf-e88e-4758-8922-58a6f7c4dd49/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-11-29 01:11:56,716 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-29 01:11:56,716 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:11:56,716 INFO L85 PathProgramCache]: Analyzing trace with hash -2055613923, now seen corresponding path program 2 times [2023-11-29 01:11:56,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:11:56,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558157409] [2023-11-29 01:11:56,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:11:56,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:11:56,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:11:56,796 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-29 01:11:56,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:11:56,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558157409] [2023-11-29 01:11:56,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558157409] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:11:56,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1472287305] [2023-11-29 01:11:56,797 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 01:11:56,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:11:56,797 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dff7acf-e88e-4758-8922-58a6f7c4dd49/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:11:56,798 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dff7acf-e88e-4758-8922-58a6f7c4dd49/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:11:56,800 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dff7acf-e88e-4758-8922-58a6f7c4dd49/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 01:11:56,900 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 01:11:56,900 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:11:56,902 INFO L262 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 01:11:56,903 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:11:56,937 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-29 01:11:56,938 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:11:56,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1472287305] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:11:56,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:11:56,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2023-11-29 01:11:56,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408304007] [2023-11-29 01:11:56,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:11:56,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 01:11:56,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:11:56,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 01:11:56,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-29 01:11:56,942 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 83 [2023-11-29 01:11:56,943 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 81 transitions, 240 flow. Second operand has 5 states, 5 states have (on average 40.2) internal successors, (201), 5 states have internal predecessors, (201), 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 01:11:56,943 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:11:56,943 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 83 [2023-11-29 01:11:56,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:11:57,406 INFO L124 PetriNetUnfolderBase]: 1906/4103 cut-off events. [2023-11-29 01:11:57,406 INFO L125 PetriNetUnfolderBase]: For 1093/1155 co-relation queries the response was YES. [2023-11-29 01:11:57,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8235 conditions, 4103 events. 1906/4103 cut-off events. For 1093/1155 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 31759 event pairs, 1113 based on Foata normal form. 48/3565 useless extension candidates. Maximal degree in co-relation 8224. Up to 2357 conditions per place. [2023-11-29 01:11:57,435 INFO L140 encePairwiseOnDemand]: 79/83 looper letters, 61 selfloop transitions, 5 changer transitions 0/98 dead transitions. [2023-11-29 01:11:57,435 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 98 transitions, 417 flow [2023-11-29 01:11:57,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:11:57,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 01:11:57,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 207 transitions. [2023-11-29 01:11:57,436 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6234939759036144 [2023-11-29 01:11:57,437 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 207 transitions. [2023-11-29 01:11:57,437 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 207 transitions. [2023-11-29 01:11:57,437 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:11:57,437 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 207 transitions. [2023-11-29 01:11:57,438 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 51.75) internal successors, (207), 4 states have internal predecessors, (207), 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 01:11:57,439 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 83.0) internal successors, (415), 5 states have internal predecessors, (415), 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 01:11:57,439 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 83.0) internal successors, (415), 5 states have internal predecessors, (415), 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 01:11:57,439 INFO L175 Difference]: Start difference. First operand has 95 places, 81 transitions, 240 flow. Second operand 4 states and 207 transitions. [2023-11-29 01:11:57,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 98 transitions, 417 flow [2023-11-29 01:11:57,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 98 transitions, 401 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-11-29 01:11:57,445 INFO L231 Difference]: Finished difference. Result has 89 places, 80 transitions, 230 flow [2023-11-29 01:11:57,445 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=230, PETRI_PLACES=89, PETRI_TRANSITIONS=80} [2023-11-29 01:11:57,446 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 13 predicate places. [2023-11-29 01:11:57,446 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 80 transitions, 230 flow [2023-11-29 01:11:57,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 40.2) internal successors, (201), 5 states have internal predecessors, (201), 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 01:11:57,446 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:11:57,446 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:11:57,452 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dff7acf-e88e-4758-8922-58a6f7c4dd49/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 01:11:57,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dff7acf-e88e-4758-8922-58a6f7c4dd49/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-29 01:11:57,650 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-29 01:11:57,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:11:57,651 INFO L85 PathProgramCache]: Analyzing trace with hash 109678354, now seen corresponding path program 1 times [2023-11-29 01:11:57,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:11:57,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638465180] [2023-11-29 01:11:57,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:11:57,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:11:57,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:11:57,726 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-29 01:11:57,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:11:57,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638465180] [2023-11-29 01:11:57,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638465180] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:11:57,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:11:57,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 01:11:57,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185159578] [2023-11-29 01:11:57,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:11:57,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:11:57,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:11:57,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:11:57,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:11:57,747 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 83 [2023-11-29 01:11:57,747 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 80 transitions, 230 flow. Second operand has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 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 01:11:57,747 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:11:57,747 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 83 [2023-11-29 01:11:57,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:11:58,155 INFO L124 PetriNetUnfolderBase]: 1865/4148 cut-off events. [2023-11-29 01:11:58,156 INFO L125 PetriNetUnfolderBase]: For 2009/2098 co-relation queries the response was YES. [2023-11-29 01:11:58,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8403 conditions, 4148 events. 1865/4148 cut-off events. For 2009/2098 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 32101 event pairs, 779 based on Foata normal form. 184/3662 useless extension candidates. Maximal degree in co-relation 8392. Up to 1555 conditions per place. [2023-11-29 01:11:58,176 INFO L140 encePairwiseOnDemand]: 78/83 looper letters, 65 selfloop transitions, 3 changer transitions 0/98 dead transitions. [2023-11-29 01:11:58,176 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 98 transitions, 444 flow [2023-11-29 01:11:58,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:11:58,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 01:11:58,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 204 transitions. [2023-11-29 01:11:58,177 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6144578313253012 [2023-11-29 01:11:58,177 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 204 transitions. [2023-11-29 01:11:58,177 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 204 transitions. [2023-11-29 01:11:58,178 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:11:58,178 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 204 transitions. [2023-11-29 01:11:58,178 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 51.0) internal successors, (204), 4 states have internal predecessors, (204), 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 01:11:58,179 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 83.0) internal successors, (415), 5 states have internal predecessors, (415), 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 01:11:58,179 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 83.0) internal successors, (415), 5 states have internal predecessors, (415), 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 01:11:58,179 INFO L175 Difference]: Start difference. First operand has 89 places, 80 transitions, 230 flow. Second operand 4 states and 204 transitions. [2023-11-29 01:11:58,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 98 transitions, 444 flow [2023-11-29 01:11:58,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 98 transitions, 426 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-29 01:11:58,183 INFO L231 Difference]: Finished difference. Result has 87 places, 78 transitions, 222 flow [2023-11-29 01:11:58,183 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=222, PETRI_PLACES=87, PETRI_TRANSITIONS=78} [2023-11-29 01:11:58,183 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 11 predicate places. [2023-11-29 01:11:58,183 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 78 transitions, 222 flow [2023-11-29 01:11:58,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 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 01:11:58,184 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:11:58,184 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-11-29 01:11:58,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-29 01:11:58,184 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-29 01:11:58,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:11:58,184 INFO L85 PathProgramCache]: Analyzing trace with hash 700478659, now seen corresponding path program 1 times [2023-11-29 01:11:58,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:11:58,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563443565] [2023-11-29 01:11:58,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:11:58,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:11:58,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:11:58,235 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-29 01:11:58,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:11:58,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563443565] [2023-11-29 01:11:58,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563443565] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:11:58,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:11:58,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 01:11:58,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070281160] [2023-11-29 01:11:58,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:11:58,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:11:58,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:11:58,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:11:58,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:11:58,241 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 83 [2023-11-29 01:11:58,242 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 78 transitions, 222 flow. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 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 01:11:58,242 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:11:58,242 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 83 [2023-11-29 01:11:58,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:11:58,586 INFO L124 PetriNetUnfolderBase]: 1657/3726 cut-off events. [2023-11-29 01:11:58,586 INFO L125 PetriNetUnfolderBase]: For 1369/1419 co-relation queries the response was YES. [2023-11-29 01:11:58,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7539 conditions, 3726 events. 1657/3726 cut-off events. For 1369/1419 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 28873 event pairs, 1089 based on Foata normal form. 0/3348 useless extension candidates. Maximal degree in co-relation 7528. Up to 2358 conditions per place. [2023-11-29 01:11:58,600 INFO L140 encePairwiseOnDemand]: 80/83 looper letters, 60 selfloop transitions, 4 changer transitions 0/95 dead transitions. [2023-11-29 01:11:58,600 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 95 transitions, 399 flow [2023-11-29 01:11:58,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:11:58,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 01:11:58,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 170 transitions. [2023-11-29 01:11:58,601 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6827309236947792 [2023-11-29 01:11:58,602 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 170 transitions. [2023-11-29 01:11:58,602 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 170 transitions. [2023-11-29 01:11:58,602 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:11:58,602 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 170 transitions. [2023-11-29 01:11:58,603 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 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 01:11:58,603 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 83.0) internal successors, (332), 4 states have internal predecessors, (332), 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 01:11:58,604 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 83.0) internal successors, (332), 4 states have internal predecessors, (332), 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 01:11:58,604 INFO L175 Difference]: Start difference. First operand has 87 places, 78 transitions, 222 flow. Second operand 3 states and 170 transitions. [2023-11-29 01:11:58,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 95 transitions, 399 flow [2023-11-29 01:11:58,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 95 transitions, 389 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-29 01:11:58,611 INFO L231 Difference]: Finished difference. Result has 85 places, 77 transitions, 220 flow [2023-11-29 01:11:58,611 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=220, PETRI_PLACES=85, PETRI_TRANSITIONS=77} [2023-11-29 01:11:58,612 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 9 predicate places. [2023-11-29 01:11:58,612 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 77 transitions, 220 flow [2023-11-29 01:11:58,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 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 01:11:58,612 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:11:58,612 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:11:58,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-29 01:11:58,613 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-29 01:11:58,613 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:11:58,613 INFO L85 PathProgramCache]: Analyzing trace with hash -864414584, now seen corresponding path program 1 times [2023-11-29 01:11:58,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:11:58,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351175945] [2023-11-29 01:11:58,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:11:58,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:11:58,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:11:58,707 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-29 01:11:58,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:11:58,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351175945] [2023-11-29 01:11:58,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351175945] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:11:58,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [705186266] [2023-11-29 01:11:58,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:11:58,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:11:58,708 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dff7acf-e88e-4758-8922-58a6f7c4dd49/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:11:58,709 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dff7acf-e88e-4758-8922-58a6f7c4dd49/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:11:58,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dff7acf-e88e-4758-8922-58a6f7c4dd49/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 01:11:58,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:11:58,824 INFO L262 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 01:11:58,825 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:11:58,858 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-29 01:11:58,859 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:11:58,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [705186266] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:11:58,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:11:58,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2023-11-29 01:11:58,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128227612] [2023-11-29 01:11:58,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:11:58,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 01:11:58,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:11:58,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 01:11:58,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-29 01:11:58,866 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 83 [2023-11-29 01:11:58,866 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 77 transitions, 220 flow. Second operand has 5 states, 5 states have (on average 40.6) internal successors, (203), 5 states have internal predecessors, (203), 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 01:11:58,866 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:11:58,866 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 83 [2023-11-29 01:11:58,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:11:59,230 INFO L124 PetriNetUnfolderBase]: 1855/3982 cut-off events. [2023-11-29 01:11:59,230 INFO L125 PetriNetUnfolderBase]: For 1768/1768 co-relation queries the response was YES. [2023-11-29 01:11:59,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8242 conditions, 3982 events. 1855/3982 cut-off events. For 1768/1768 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 30366 event pairs, 1099 based on Foata normal form. 46/3518 useless extension candidates. Maximal degree in co-relation 8231. Up to 2359 conditions per place. [2023-11-29 01:11:59,248 INFO L140 encePairwiseOnDemand]: 79/83 looper letters, 63 selfloop transitions, 5 changer transitions 0/96 dead transitions. [2023-11-29 01:11:59,249 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 96 transitions, 434 flow [2023-11-29 01:11:59,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:11:59,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 01:11:59,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 207 transitions. [2023-11-29 01:11:59,250 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6234939759036144 [2023-11-29 01:11:59,250 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 207 transitions. [2023-11-29 01:11:59,250 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 207 transitions. [2023-11-29 01:11:59,251 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:11:59,251 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 207 transitions. [2023-11-29 01:11:59,252 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 51.75) internal successors, (207), 4 states have internal predecessors, (207), 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 01:11:59,253 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 83.0) internal successors, (415), 5 states have internal predecessors, (415), 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 01:11:59,253 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 83.0) internal successors, (415), 5 states have internal predecessors, (415), 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 01:11:59,253 INFO L175 Difference]: Start difference. First operand has 85 places, 77 transitions, 220 flow. Second operand 4 states and 207 transitions. [2023-11-29 01:11:59,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 96 transitions, 434 flow [2023-11-29 01:11:59,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 96 transitions, 418 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 01:11:59,257 INFO L231 Difference]: Finished difference. Result has 85 places, 76 transitions, 218 flow [2023-11-29 01:11:59,258 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=218, PETRI_PLACES=85, PETRI_TRANSITIONS=76} [2023-11-29 01:11:59,258 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 9 predicate places. [2023-11-29 01:11:59,258 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 76 transitions, 218 flow [2023-11-29 01:11:59,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 40.6) internal successors, (203), 5 states have internal predecessors, (203), 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 01:11:59,259 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:11:59,259 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:11:59,265 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dff7acf-e88e-4758-8922-58a6f7c4dd49/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 01:11:59,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dff7acf-e88e-4758-8922-58a6f7c4dd49/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:11:59,465 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-29 01:11:59,466 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:11:59,466 INFO L85 PathProgramCache]: Analyzing trace with hash -894937449, now seen corresponding path program 1 times [2023-11-29 01:11:59,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:11:59,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981845163] [2023-11-29 01:11:59,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:11:59,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:11:59,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:11:59,536 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-29 01:11:59,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:11:59,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981845163] [2023-11-29 01:11:59,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981845163] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:11:59,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:11:59,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 01:11:59,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359433231] [2023-11-29 01:11:59,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:11:59,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:11:59,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:11:59,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:11:59,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:11:59,552 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 83 [2023-11-29 01:11:59,552 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 76 transitions, 218 flow. Second operand has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 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 01:11:59,553 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:11:59,553 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 83 [2023-11-29 01:11:59,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:11:59,970 INFO L124 PetriNetUnfolderBase]: 1585/3752 cut-off events. [2023-11-29 01:11:59,970 INFO L125 PetriNetUnfolderBase]: For 1569/1591 co-relation queries the response was YES. [2023-11-29 01:11:59,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7367 conditions, 3752 events. 1585/3752 cut-off events. For 1569/1591 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 29646 event pairs, 763 based on Foata normal form. 0/3266 useless extension candidates. Maximal degree in co-relation 7356. Up to 1555 conditions per place. [2023-11-29 01:11:59,986 INFO L140 encePairwiseOnDemand]: 79/83 looper letters, 63 selfloop transitions, 3 changer transitions 0/95 dead transitions. [2023-11-29 01:11:59,986 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 95 transitions, 422 flow [2023-11-29 01:11:59,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:11:59,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 01:11:59,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 205 transitions. [2023-11-29 01:11:59,988 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6174698795180723 [2023-11-29 01:11:59,988 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 205 transitions. [2023-11-29 01:11:59,988 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 205 transitions. [2023-11-29 01:11:59,989 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:11:59,989 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 205 transitions. [2023-11-29 01:11:59,989 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 51.25) internal successors, (205), 4 states have internal predecessors, (205), 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 01:11:59,990 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 83.0) internal successors, (415), 5 states have internal predecessors, (415), 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 01:11:59,990 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 83.0) internal successors, (415), 5 states have internal predecessors, (415), 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 01:11:59,991 INFO L175 Difference]: Start difference. First operand has 85 places, 76 transitions, 218 flow. Second operand 4 states and 205 transitions. [2023-11-29 01:11:59,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 95 transitions, 422 flow [2023-11-29 01:11:59,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 95 transitions, 412 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-29 01:11:59,995 INFO L231 Difference]: Finished difference. Result has 84 places, 75 transitions, 212 flow [2023-11-29 01:11:59,995 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=212, PETRI_PLACES=84, PETRI_TRANSITIONS=75} [2023-11-29 01:11:59,996 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 8 predicate places. [2023-11-29 01:11:59,996 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 75 transitions, 212 flow [2023-11-29 01:11:59,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 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 01:11:59,996 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:11:59,997 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:11:59,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-29 01:11:59,997 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-29 01:11:59,997 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:11:59,997 INFO L85 PathProgramCache]: Analyzing trace with hash -1027047465, now seen corresponding path program 1 times [2023-11-29 01:11:59,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:11:59,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908483983] [2023-11-29 01:11:59,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:11:59,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:12:00,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:12:00,060 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-29 01:12:00,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:12:00,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908483983] [2023-11-29 01:12:00,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908483983] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:12:00,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:12:00,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 01:12:00,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898293144] [2023-11-29 01:12:00,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:12:00,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:12:00,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:12:00,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:12:00,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:12:00,066 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 83 [2023-11-29 01:12:00,067 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 75 transitions, 212 flow. Second operand has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 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 01:12:00,067 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:12:00,067 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 83 [2023-11-29 01:12:00,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:12:00,402 INFO L124 PetriNetUnfolderBase]: 1645/3678 cut-off events. [2023-11-29 01:12:00,402 INFO L125 PetriNetUnfolderBase]: For 1329/1329 co-relation queries the response was YES. [2023-11-29 01:12:00,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7427 conditions, 3678 events. 1645/3678 cut-off events. For 1329/1329 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 28302 event pairs, 1087 based on Foata normal form. 0/3298 useless extension candidates. Maximal degree in co-relation 7416. Up to 2360 conditions per place. [2023-11-29 01:12:00,415 INFO L140 encePairwiseOnDemand]: 80/83 looper letters, 62 selfloop transitions, 4 changer transitions 0/94 dead transitions. [2023-11-29 01:12:00,415 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 94 transitions, 414 flow [2023-11-29 01:12:00,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:12:00,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 01:12:00,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 170 transitions. [2023-11-29 01:12:00,416 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6827309236947792 [2023-11-29 01:12:00,416 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 170 transitions. [2023-11-29 01:12:00,416 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 170 transitions. [2023-11-29 01:12:00,416 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:12:00,417 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 170 transitions. [2023-11-29 01:12:00,417 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 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 01:12:00,418 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 83.0) internal successors, (332), 4 states have internal predecessors, (332), 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 01:12:00,418 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 83.0) internal successors, (332), 4 states have internal predecessors, (332), 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 01:12:00,418 INFO L175 Difference]: Start difference. First operand has 84 places, 75 transitions, 212 flow. Second operand 3 states and 170 transitions. [2023-11-29 01:12:00,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 94 transitions, 414 flow [2023-11-29 01:12:00,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 94 transitions, 408 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-29 01:12:00,422 INFO L231 Difference]: Finished difference. Result has 82 places, 74 transitions, 210 flow [2023-11-29 01:12:00,422 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=210, PETRI_PLACES=82, PETRI_TRANSITIONS=74} [2023-11-29 01:12:00,423 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 6 predicate places. [2023-11-29 01:12:00,423 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 74 transitions, 210 flow [2023-11-29 01:12:00,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 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 01:12:00,423 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:12:00,423 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:12:00,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-29 01:12:00,424 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-29 01:12:00,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:12:00,424 INFO L85 PathProgramCache]: Analyzing trace with hash -1150832475, now seen corresponding path program 1 times [2023-11-29 01:12:00,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:12:00,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604343715] [2023-11-29 01:12:00,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:12:00,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:12:00,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:12:00,513 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-29 01:12:00,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:12:00,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604343715] [2023-11-29 01:12:00,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604343715] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:12:00,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [975506520] [2023-11-29 01:12:00,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:12:00,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:12:00,515 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dff7acf-e88e-4758-8922-58a6f7c4dd49/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:12:00,518 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dff7acf-e88e-4758-8922-58a6f7c4dd49/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:12:00,550 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dff7acf-e88e-4758-8922-58a6f7c4dd49/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 01:12:00,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:12:00,646 INFO L262 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 01:12:00,648 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:12:00,677 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-29 01:12:00,677 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:12:00,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [975506520] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:12:00,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:12:00,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2023-11-29 01:12:00,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977054695] [2023-11-29 01:12:00,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:12:00,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:12:00,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:12:00,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:12:00,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-29 01:12:00,704 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 83 [2023-11-29 01:12:00,705 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 74 transitions, 210 flow. Second operand has 4 states, 4 states have (on average 39.25) internal successors, (157), 4 states have internal predecessors, (157), 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 01:12:00,705 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:12:00,705 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 83 [2023-11-29 01:12:00,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:12:01,240 INFO L124 PetriNetUnfolderBase]: 2262/4667 cut-off events. [2023-11-29 01:12:01,240 INFO L125 PetriNetUnfolderBase]: For 1773/1773 co-relation queries the response was YES. [2023-11-29 01:12:01,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9499 conditions, 4667 events. 2262/4667 cut-off events. For 1773/1773 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 35527 event pairs, 1203 based on Foata normal form. 96/4203 useless extension candidates. Maximal degree in co-relation 9488. Up to 2564 conditions per place. [2023-11-29 01:12:01,257 INFO L140 encePairwiseOnDemand]: 74/83 looper letters, 102 selfloop transitions, 6 changer transitions 0/131 dead transitions. [2023-11-29 01:12:01,257 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 131 transitions, 603 flow [2023-11-29 01:12:01,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 01:12:01,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 01:12:01,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 275 transitions. [2023-11-29 01:12:01,259 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6626506024096386 [2023-11-29 01:12:01,259 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 275 transitions. [2023-11-29 01:12:01,259 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 275 transitions. [2023-11-29 01:12:01,259 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:12:01,259 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 275 transitions. [2023-11-29 01:12:01,260 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 55.0) internal successors, (275), 5 states have internal predecessors, (275), 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 01:12:01,260 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 83.0) internal successors, (498), 6 states have internal predecessors, (498), 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 01:12:01,260 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 83.0) internal successors, (498), 6 states have internal predecessors, (498), 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 01:12:01,261 INFO L175 Difference]: Start difference. First operand has 82 places, 74 transitions, 210 flow. Second operand 5 states and 275 transitions. [2023-11-29 01:12:01,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 131 transitions, 603 flow [2023-11-29 01:12:01,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 131 transitions, 571 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 01:12:01,265 INFO L231 Difference]: Finished difference. Result has 86 places, 76 transitions, 238 flow [2023-11-29 01:12:01,265 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=238, PETRI_PLACES=86, PETRI_TRANSITIONS=76} [2023-11-29 01:12:01,265 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 10 predicate places. [2023-11-29 01:12:01,265 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 76 transitions, 238 flow [2023-11-29 01:12:01,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.25) internal successors, (157), 4 states have internal predecessors, (157), 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 01:12:01,266 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:12:01,266 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:12:01,271 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dff7acf-e88e-4758-8922-58a6f7c4dd49/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 01:12:01,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dff7acf-e88e-4758-8922-58a6f7c4dd49/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:12:01,467 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-29 01:12:01,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:12:01,467 INFO L85 PathProgramCache]: Analyzing trace with hash -1042386278, now seen corresponding path program 1 times [2023-11-29 01:12:01,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:12:01,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593825072] [2023-11-29 01:12:01,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:12:01,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:12:01,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:12:01,535 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-29 01:12:01,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:12:01,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593825072] [2023-11-29 01:12:01,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593825072] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:12:01,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:12:01,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 01:12:01,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165739335] [2023-11-29 01:12:01,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:12:01,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:12:01,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:12:01,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:12:01,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:12:01,538 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 83 [2023-11-29 01:12:01,538 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 76 transitions, 238 flow. Second operand has 4 states, 4 states have (on average 44.0) internal successors, (176), 4 states have internal predecessors, (176), 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 01:12:01,538 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:12:01,539 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 83 [2023-11-29 01:12:01,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:12:01,905 INFO L124 PetriNetUnfolderBase]: 1523/3318 cut-off events. [2023-11-29 01:12:01,905 INFO L125 PetriNetUnfolderBase]: For 1893/1937 co-relation queries the response was YES. [2023-11-29 01:12:01,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7217 conditions, 3318 events. 1523/3318 cut-off events. For 1893/1937 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 23761 event pairs, 691 based on Foata normal form. 24/3064 useless extension candidates. Maximal degree in co-relation 7204. Up to 1458 conditions per place. [2023-11-29 01:12:01,917 INFO L140 encePairwiseOnDemand]: 78/83 looper letters, 99 selfloop transitions, 4 changer transitions 16/147 dead transitions. [2023-11-29 01:12:01,917 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 147 transitions, 783 flow [2023-11-29 01:12:01,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 01:12:01,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 01:12:01,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 297 transitions. [2023-11-29 01:12:01,918 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7156626506024096 [2023-11-29 01:12:01,918 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 297 transitions. [2023-11-29 01:12:01,918 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 297 transitions. [2023-11-29 01:12:01,919 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:12:01,919 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 297 transitions. [2023-11-29 01:12:01,919 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 59.4) internal successors, (297), 5 states have internal predecessors, (297), 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 01:12:01,920 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 83.0) internal successors, (498), 6 states have internal predecessors, (498), 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 01:12:01,920 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 83.0) internal successors, (498), 6 states have internal predecessors, (498), 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 01:12:01,920 INFO L175 Difference]: Start difference. First operand has 86 places, 76 transitions, 238 flow. Second operand 5 states and 297 transitions. [2023-11-29 01:12:01,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 147 transitions, 783 flow [2023-11-29 01:12:01,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 147 transitions, 778 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 01:12:01,924 INFO L231 Difference]: Finished difference. Result has 92 places, 78 transitions, 261 flow [2023-11-29 01:12:01,924 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=261, PETRI_PLACES=92, PETRI_TRANSITIONS=78} [2023-11-29 01:12:01,925 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 16 predicate places. [2023-11-29 01:12:01,925 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 78 transitions, 261 flow [2023-11-29 01:12:01,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.0) internal successors, (176), 4 states have internal predecessors, (176), 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 01:12:01,925 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:12:01,925 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:12:01,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-29 01:12:01,925 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-29 01:12:01,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:12:01,926 INFO L85 PathProgramCache]: Analyzing trace with hash -1316067515, now seen corresponding path program 1 times [2023-11-29 01:12:01,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:12:01,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23528802] [2023-11-29 01:12:01,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:12:01,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:12:01,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:12:02,020 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-29 01:12:02,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:12:02,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23528802] [2023-11-29 01:12:02,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23528802] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:12:02,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [755557635] [2023-11-29 01:12:02,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:12:02,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:12:02,021 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dff7acf-e88e-4758-8922-58a6f7c4dd49/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:12:02,022 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dff7acf-e88e-4758-8922-58a6f7c4dd49/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:12:02,026 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dff7acf-e88e-4758-8922-58a6f7c4dd49/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 01:12:02,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:12:02,135 INFO L262 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 01:12:02,137 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:12:02,180 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-29 01:12:02,181 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:12:02,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [755557635] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:12:02,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:12:02,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 8 [2023-11-29 01:12:02,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783803731] [2023-11-29 01:12:02,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:12:02,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:12:02,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:12:02,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:12:02,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-29 01:12:02,198 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 83 [2023-11-29 01:12:02,198 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 78 transitions, 261 flow. Second operand has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 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 01:12:02,198 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:12:02,198 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 83 [2023-11-29 01:12:02,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:12:02,546 INFO L124 PetriNetUnfolderBase]: 1611/3602 cut-off events. [2023-11-29 01:12:02,546 INFO L125 PetriNetUnfolderBase]: For 2554/2558 co-relation queries the response was YES. [2023-11-29 01:12:02,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8303 conditions, 3602 events. 1611/3602 cut-off events. For 2554/2558 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 26644 event pairs, 899 based on Foata normal form. 46/3338 useless extension candidates. Maximal degree in co-relation 8287. Up to 1753 conditions per place. [2023-11-29 01:12:02,559 INFO L140 encePairwiseOnDemand]: 79/83 looper letters, 67 selfloop transitions, 4 changer transitions 0/97 dead transitions. [2023-11-29 01:12:02,559 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 97 transitions, 475 flow [2023-11-29 01:12:02,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:12:02,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 01:12:02,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 206 transitions. [2023-11-29 01:12:02,560 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6204819277108434 [2023-11-29 01:12:02,561 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 206 transitions. [2023-11-29 01:12:02,561 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 206 transitions. [2023-11-29 01:12:02,561 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:12:02,561 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 206 transitions. [2023-11-29 01:12:02,562 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 51.5) internal successors, (206), 4 states have internal predecessors, (206), 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 01:12:02,562 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 83.0) internal successors, (415), 5 states have internal predecessors, (415), 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 01:12:02,562 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 83.0) internal successors, (415), 5 states have internal predecessors, (415), 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 01:12:02,562 INFO L175 Difference]: Start difference. First operand has 92 places, 78 transitions, 261 flow. Second operand 4 states and 206 transitions. [2023-11-29 01:12:02,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 97 transitions, 475 flow [2023-11-29 01:12:02,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 97 transitions, 475 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 01:12:02,568 INFO L231 Difference]: Finished difference. Result has 94 places, 77 transitions, 267 flow [2023-11-29 01:12:02,568 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=259, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=267, PETRI_PLACES=94, PETRI_TRANSITIONS=77} [2023-11-29 01:12:02,568 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 18 predicate places. [2023-11-29 01:12:02,568 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 77 transitions, 267 flow [2023-11-29 01:12:02,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 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 01:12:02,569 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:12:02,569 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:12:02,573 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dff7acf-e88e-4758-8922-58a6f7c4dd49/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 01:12:02,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dff7acf-e88e-4758-8922-58a6f7c4dd49/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-29 01:12:02,769 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-29 01:12:02,770 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:12:02,770 INFO L85 PathProgramCache]: Analyzing trace with hash -2143418231, now seen corresponding path program 1 times [2023-11-29 01:12:02,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:12:02,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868570863] [2023-11-29 01:12:02,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:12:02,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:12:02,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:12:02,844 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-29 01:12:02,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:12:02,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868570863] [2023-11-29 01:12:02,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868570863] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:12:02,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1913680062] [2023-11-29 01:12:02,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:12:02,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:12:02,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dff7acf-e88e-4758-8922-58a6f7c4dd49/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:12:02,846 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dff7acf-e88e-4758-8922-58a6f7c4dd49/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:12:02,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dff7acf-e88e-4758-8922-58a6f7c4dd49/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 01:12:02,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:12:02,957 INFO L262 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 01:12:02,959 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:12:03,009 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-29 01:12:03,009 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:12:03,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1913680062] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:12:03,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:12:03,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 8 [2023-11-29 01:12:03,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79079404] [2023-11-29 01:12:03,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:12:03,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:12:03,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:12:03,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:12:03,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-29 01:12:03,024 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 83 [2023-11-29 01:12:03,024 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 77 transitions, 267 flow. Second operand has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 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 01:12:03,024 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:12:03,024 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 83 [2023-11-29 01:12:03,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:12:03,379 INFO L124 PetriNetUnfolderBase]: 1615/3568 cut-off events. [2023-11-29 01:12:03,379 INFO L125 PetriNetUnfolderBase]: For 3024/3028 co-relation queries the response was YES. [2023-11-29 01:12:03,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8405 conditions, 3568 events. 1615/3568 cut-off events. For 3024/3028 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 26152 event pairs, 899 based on Foata normal form. 46/3304 useless extension candidates. Maximal degree in co-relation 8388. Up to 1753 conditions per place. [2023-11-29 01:12:03,393 INFO L140 encePairwiseOnDemand]: 79/83 looper letters, 68 selfloop transitions, 4 changer transitions 0/96 dead transitions. [2023-11-29 01:12:03,393 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 96 transitions, 481 flow [2023-11-29 01:12:03,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:12:03,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 01:12:03,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 202 transitions. [2023-11-29 01:12:03,394 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.608433734939759 [2023-11-29 01:12:03,394 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 202 transitions. [2023-11-29 01:12:03,394 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 202 transitions. [2023-11-29 01:12:03,395 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:12:03,395 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 202 transitions. [2023-11-29 01:12:03,395 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 50.5) internal successors, (202), 4 states have internal predecessors, (202), 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 01:12:03,396 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 83.0) internal successors, (415), 5 states have internal predecessors, (415), 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 01:12:03,396 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 83.0) internal successors, (415), 5 states have internal predecessors, (415), 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 01:12:03,396 INFO L175 Difference]: Start difference. First operand has 94 places, 77 transitions, 267 flow. Second operand 4 states and 202 transitions. [2023-11-29 01:12:03,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 96 transitions, 481 flow [2023-11-29 01:12:03,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 96 transitions, 473 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-29 01:12:03,402 INFO L231 Difference]: Finished difference. Result has 93 places, 76 transitions, 263 flow [2023-11-29 01:12:03,402 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=255, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=263, PETRI_PLACES=93, PETRI_TRANSITIONS=76} [2023-11-29 01:12:03,402 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 17 predicate places. [2023-11-29 01:12:03,402 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 76 transitions, 263 flow [2023-11-29 01:12:03,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 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 01:12:03,402 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:12:03,403 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:12:03,407 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dff7acf-e88e-4758-8922-58a6f7c4dd49/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 01:12:03,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dff7acf-e88e-4758-8922-58a6f7c4dd49/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:12:03,603 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-29 01:12:03,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:12:03,603 INFO L85 PathProgramCache]: Analyzing trace with hash -2021454872, now seen corresponding path program 1 times [2023-11-29 01:12:03,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:12:03,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294618992] [2023-11-29 01:12:03,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:12:03,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:12:03,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:12:03,693 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-29 01:12:03,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:12:03,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294618992] [2023-11-29 01:12:03,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294618992] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:12:03,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1928391436] [2023-11-29 01:12:03,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:12:03,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:12:03,694 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dff7acf-e88e-4758-8922-58a6f7c4dd49/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:12:03,695 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dff7acf-e88e-4758-8922-58a6f7c4dd49/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:12:03,697 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dff7acf-e88e-4758-8922-58a6f7c4dd49/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 01:12:03,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:12:03,817 INFO L262 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 01:12:03,818 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:12:03,851 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-29 01:12:03,851 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:12:03,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1928391436] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:12:03,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:12:03,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2023-11-29 01:12:03,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359829424] [2023-11-29 01:12:03,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:12:03,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:12:03,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:12:03,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:12:03,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-29 01:12:03,867 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 83 [2023-11-29 01:12:03,868 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 76 transitions, 263 flow. Second operand has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 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 01:12:03,868 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:12:03,868 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 83 [2023-11-29 01:12:03,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:12:04,288 INFO L124 PetriNetUnfolderBase]: 1627/3626 cut-off events. [2023-11-29 01:12:04,288 INFO L125 PetriNetUnfolderBase]: For 2962/2962 co-relation queries the response was YES. [2023-11-29 01:12:04,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8456 conditions, 3626 events. 1627/3626 cut-off events. For 2962/2962 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 26850 event pairs, 1105 based on Foata normal form. 42/3334 useless extension candidates. Maximal degree in co-relation 8439. Up to 2176 conditions per place. [2023-11-29 01:12:04,303 INFO L140 encePairwiseOnDemand]: 77/83 looper letters, 108 selfloop transitions, 5 changer transitions 0/136 dead transitions. [2023-11-29 01:12:04,303 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 136 transitions, 707 flow [2023-11-29 01:12:04,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 01:12:04,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 01:12:04,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 270 transitions. [2023-11-29 01:12:04,304 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6506024096385542 [2023-11-29 01:12:04,304 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 270 transitions. [2023-11-29 01:12:04,304 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 270 transitions. [2023-11-29 01:12:04,304 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:12:04,304 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 270 transitions. [2023-11-29 01:12:04,305 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 54.0) internal successors, (270), 5 states have internal predecessors, (270), 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 01:12:04,305 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 83.0) internal successors, (498), 6 states have internal predecessors, (498), 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 01:12:04,306 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 83.0) internal successors, (498), 6 states have internal predecessors, (498), 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 01:12:04,306 INFO L175 Difference]: Start difference. First operand has 93 places, 76 transitions, 263 flow. Second operand 5 states and 270 transitions. [2023-11-29 01:12:04,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 136 transitions, 707 flow [2023-11-29 01:12:04,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 136 transitions, 696 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-29 01:12:04,312 INFO L231 Difference]: Finished difference. Result has 93 places, 75 transitions, 256 flow [2023-11-29 01:12:04,312 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=256, PETRI_PLACES=93, PETRI_TRANSITIONS=75} [2023-11-29 01:12:04,312 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 17 predicate places. [2023-11-29 01:12:04,312 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 75 transitions, 256 flow [2023-11-29 01:12:04,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 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 01:12:04,313 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:12:04,313 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:12:04,317 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dff7acf-e88e-4758-8922-58a6f7c4dd49/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-29 01:12:04,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dff7acf-e88e-4758-8922-58a6f7c4dd49/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:12:04,513 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-29 01:12:04,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:12:04,514 INFO L85 PathProgramCache]: Analyzing trace with hash -2021455897, now seen corresponding path program 1 times [2023-11-29 01:12:04,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:12:04,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295964941] [2023-11-29 01:12:04,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:12:04,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:12:04,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:12:04,603 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-29 01:12:04,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:12:04,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295964941] [2023-11-29 01:12:04,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295964941] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:12:04,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1335067695] [2023-11-29 01:12:04,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:12:04,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:12:04,604 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dff7acf-e88e-4758-8922-58a6f7c4dd49/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:12:04,605 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dff7acf-e88e-4758-8922-58a6f7c4dd49/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:12:04,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dff7acf-e88e-4758-8922-58a6f7c4dd49/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 01:12:04,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:12:04,725 INFO L262 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 01:12:04,727 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:12:04,802 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-29 01:12:04,802 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:12:04,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1335067695] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:12:04,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:12:04,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 9 [2023-11-29 01:12:04,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041594338] [2023-11-29 01:12:04,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:12:04,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 01:12:04,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:12:04,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 01:12:04,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-29 01:12:04,827 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 83 [2023-11-29 01:12:04,828 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 75 transitions, 256 flow. Second operand has 5 states, 5 states have (on average 38.0) internal successors, (190), 5 states have internal predecessors, (190), 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 01:12:04,828 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:12:04,828 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 83 [2023-11-29 01:12:04,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:12:05,245 INFO L124 PetriNetUnfolderBase]: 1693/3652 cut-off events. [2023-11-29 01:12:05,245 INFO L125 PetriNetUnfolderBase]: For 2708/2708 co-relation queries the response was YES. [2023-11-29 01:12:05,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8623 conditions, 3652 events. 1693/3652 cut-off events. For 2708/2708 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 26383 event pairs, 1165 based on Foata normal form. 42/3442 useless extension candidates. Maximal degree in co-relation 8607. Up to 2283 conditions per place. [2023-11-29 01:12:05,261 INFO L140 encePairwiseOnDemand]: 76/83 looper letters, 108 selfloop transitions, 6 changer transitions 0/136 dead transitions. [2023-11-29 01:12:05,262 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 136 transitions, 708 flow [2023-11-29 01:12:05,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 01:12:05,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 01:12:05,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 301 transitions. [2023-11-29 01:12:05,263 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6044176706827309 [2023-11-29 01:12:05,263 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 301 transitions. [2023-11-29 01:12:05,264 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 301 transitions. [2023-11-29 01:12:05,264 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:12:05,264 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 301 transitions. [2023-11-29 01:12:05,265 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 50.166666666666664) internal successors, (301), 6 states have internal predecessors, (301), 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 01:12:05,266 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 83.0) internal successors, (581), 7 states have internal predecessors, (581), 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 01:12:05,266 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 83.0) internal successors, (581), 7 states have internal predecessors, (581), 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 01:12:05,266 INFO L175 Difference]: Start difference. First operand has 93 places, 75 transitions, 256 flow. Second operand 6 states and 301 transitions. [2023-11-29 01:12:05,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 136 transitions, 708 flow [2023-11-29 01:12:05,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 136 transitions, 699 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-29 01:12:05,273 INFO L231 Difference]: Finished difference. Result has 96 places, 75 transitions, 263 flow [2023-11-29 01:12:05,273 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=247, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=263, PETRI_PLACES=96, PETRI_TRANSITIONS=75} [2023-11-29 01:12:05,273 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 20 predicate places. [2023-11-29 01:12:05,273 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 75 transitions, 263 flow [2023-11-29 01:12:05,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 38.0) internal successors, (190), 5 states have internal predecessors, (190), 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 01:12:05,274 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:12:05,274 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:12:05,279 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dff7acf-e88e-4758-8922-58a6f7c4dd49/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-29 01:12:05,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dff7acf-e88e-4758-8922-58a6f7c4dd49/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-11-29 01:12:05,474 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-29 01:12:05,474 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:12:05,475 INFO L85 PathProgramCache]: Analyzing trace with hash 1759377484, now seen corresponding path program 1 times [2023-11-29 01:12:05,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:12:05,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856119469] [2023-11-29 01:12:05,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:12:05,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:12:05,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:12:05,559 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-29 01:12:05,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:12:05,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856119469] [2023-11-29 01:12:05,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856119469] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:12:05,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1096760358] [2023-11-29 01:12:05,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:12:05,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:12:05,560 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dff7acf-e88e-4758-8922-58a6f7c4dd49/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:12:05,561 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dff7acf-e88e-4758-8922-58a6f7c4dd49/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:12:05,579 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dff7acf-e88e-4758-8922-58a6f7c4dd49/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 01:12:05,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:12:05,691 INFO L262 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 01:12:05,693 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:12:05,779 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-29 01:12:05,779 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:12:05,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1096760358] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:12:05,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:12:05,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 10 [2023-11-29 01:12:05,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045195888] [2023-11-29 01:12:05,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:12:05,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 01:12:05,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:12:05,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 01:12:05,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-11-29 01:12:05,808 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 83 [2023-11-29 01:12:05,809 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 75 transitions, 263 flow. Second operand has 6 states, 6 states have (on average 37.5) internal successors, (225), 6 states have internal predecessors, (225), 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 01:12:05,809 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:12:05,809 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 83 [2023-11-29 01:12:05,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:12:06,288 INFO L124 PetriNetUnfolderBase]: 1897/3932 cut-off events. [2023-11-29 01:12:06,289 INFO L125 PetriNetUnfolderBase]: For 3330/3334 co-relation queries the response was YES. [2023-11-29 01:12:06,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9596 conditions, 3932 events. 1897/3932 cut-off events. For 3330/3334 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 28021 event pairs, 891 based on Foata normal form. 88/3862 useless extension candidates. Maximal degree in co-relation 9579. Up to 1795 conditions per place. [2023-11-29 01:12:06,304 INFO L140 encePairwiseOnDemand]: 74/83 looper letters, 124 selfloop transitions, 11 changer transitions 0/157 dead transitions. [2023-11-29 01:12:06,304 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 157 transitions, 839 flow [2023-11-29 01:12:06,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 01:12:06,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 01:12:06,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 351 transitions. [2023-11-29 01:12:06,306 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6041308089500861 [2023-11-29 01:12:06,306 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 351 transitions. [2023-11-29 01:12:06,306 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 351 transitions. [2023-11-29 01:12:06,306 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:12:06,306 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 351 transitions. [2023-11-29 01:12:06,307 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 50.142857142857146) internal successors, (351), 7 states have internal predecessors, (351), 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 01:12:06,308 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 83.0) internal successors, (664), 8 states have internal predecessors, (664), 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 01:12:06,308 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 83.0) internal successors, (664), 8 states have internal predecessors, (664), 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 01:12:06,308 INFO L175 Difference]: Start difference. First operand has 96 places, 75 transitions, 263 flow. Second operand 7 states and 351 transitions. [2023-11-29 01:12:06,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 157 transitions, 839 flow [2023-11-29 01:12:06,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 157 transitions, 825 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-29 01:12:06,316 INFO L231 Difference]: Finished difference. Result has 99 places, 77 transitions, 291 flow [2023-11-29 01:12:06,316 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=251, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=291, PETRI_PLACES=99, PETRI_TRANSITIONS=77} [2023-11-29 01:12:06,316 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 23 predicate places. [2023-11-29 01:12:06,316 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 77 transitions, 291 flow [2023-11-29 01:12:06,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 37.5) internal successors, (225), 6 states have internal predecessors, (225), 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 01:12:06,316 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:12:06,316 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:12:06,321 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dff7acf-e88e-4758-8922-58a6f7c4dd49/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-29 01:12:06,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dff7acf-e88e-4758-8922-58a6f7c4dd49/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-11-29 01:12:06,517 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-29 01:12:06,517 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:12:06,517 INFO L85 PathProgramCache]: Analyzing trace with hash 1018049971, now seen corresponding path program 1 times [2023-11-29 01:12:06,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:12:06,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637696362] [2023-11-29 01:12:06,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:12:06,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:12:06,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:12:06,603 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-29 01:12:06,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:12:06,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637696362] [2023-11-29 01:12:06,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637696362] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:12:06,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1957383462] [2023-11-29 01:12:06,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:12:06,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:12:06,604 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dff7acf-e88e-4758-8922-58a6f7c4dd49/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:12:06,605 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dff7acf-e88e-4758-8922-58a6f7c4dd49/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:12:06,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dff7acf-e88e-4758-8922-58a6f7c4dd49/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-29 01:12:06,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:12:06,731 INFO L262 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 01:12:06,732 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:12:06,763 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-29 01:12:06,763 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:12:06,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1957383462] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:12:06,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:12:06,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2023-11-29 01:12:06,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079533191] [2023-11-29 01:12:06,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:12:06,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:12:06,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:12:06,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:12:06,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-29 01:12:06,784 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 83 [2023-11-29 01:12:06,785 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 77 transitions, 291 flow. Second operand has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 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 01:12:06,785 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:12:06,785 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 83 [2023-11-29 01:12:06,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:12:07,313 INFO L124 PetriNetUnfolderBase]: 2024/4467 cut-off events. [2023-11-29 01:12:07,313 INFO L125 PetriNetUnfolderBase]: For 4291/4357 co-relation queries the response was YES. [2023-11-29 01:12:07,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10930 conditions, 4467 events. 2024/4467 cut-off events. For 4291/4357 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 34354 event pairs, 1380 based on Foata normal form. 60/4181 useless extension candidates. Maximal degree in co-relation 10911. Up to 2647 conditions per place. [2023-11-29 01:12:07,336 INFO L140 encePairwiseOnDemand]: 76/83 looper letters, 124 selfloop transitions, 6 changer transitions 0/153 dead transitions. [2023-11-29 01:12:07,336 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 153 transitions, 943 flow [2023-11-29 01:12:07,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 01:12:07,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 01:12:07,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 271 transitions. [2023-11-29 01:12:07,337 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.653012048192771 [2023-11-29 01:12:07,337 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 271 transitions. [2023-11-29 01:12:07,337 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 271 transitions. [2023-11-29 01:12:07,338 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:12:07,338 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 271 transitions. [2023-11-29 01:12:07,339 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 54.2) internal successors, (271), 5 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 01:12:07,339 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 83.0) internal successors, (498), 6 states have internal predecessors, (498), 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 01:12:07,340 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 83.0) internal successors, (498), 6 states have internal predecessors, (498), 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 01:12:07,340 INFO L175 Difference]: Start difference. First operand has 99 places, 77 transitions, 291 flow. Second operand 5 states and 271 transitions. [2023-11-29 01:12:07,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 153 transitions, 943 flow [2023-11-29 01:12:07,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 153 transitions, 911 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-29 01:12:07,352 INFO L231 Difference]: Finished difference. Result has 103 places, 80 transitions, 315 flow [2023-11-29 01:12:07,352 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=280, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=315, PETRI_PLACES=103, PETRI_TRANSITIONS=80} [2023-11-29 01:12:07,353 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 27 predicate places. [2023-11-29 01:12:07,353 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 80 transitions, 315 flow [2023-11-29 01:12:07,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 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 01:12:07,353 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:12:07,353 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:12:07,359 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dff7acf-e88e-4758-8922-58a6f7c4dd49/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-29 01:12:07,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dff7acf-e88e-4758-8922-58a6f7c4dd49/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-11-29 01:12:07,554 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-29 01:12:07,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:12:07,554 INFO L85 PathProgramCache]: Analyzing trace with hash 1018048946, now seen corresponding path program 1 times [2023-11-29 01:12:07,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:12:07,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263049457] [2023-11-29 01:12:07,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:12:07,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:12:07,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:12:07,644 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-29 01:12:07,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:12:07,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263049457] [2023-11-29 01:12:07,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263049457] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:12:07,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1748058698] [2023-11-29 01:12:07,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:12:07,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:12:07,645 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dff7acf-e88e-4758-8922-58a6f7c4dd49/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:12:07,646 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dff7acf-e88e-4758-8922-58a6f7c4dd49/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:12:07,650 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dff7acf-e88e-4758-8922-58a6f7c4dd49/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-29 01:12:07,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:12:07,775 INFO L262 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 01:12:07,777 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:12:07,867 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-29 01:12:07,867 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:12:07,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1748058698] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:12:07,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:12:07,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 9 [2023-11-29 01:12:07,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131316503] [2023-11-29 01:12:07,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:12:07,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 01:12:07,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:12:07,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 01:12:07,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-29 01:12:07,900 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 83 [2023-11-29 01:12:07,900 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 80 transitions, 315 flow. Second operand has 5 states, 5 states have (on average 38.4) internal successors, (192), 5 states have internal predecessors, (192), 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 01:12:07,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:12:07,900 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 83 [2023-11-29 01:12:07,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:12:08,510 INFO L124 PetriNetUnfolderBase]: 2340/4997 cut-off events. [2023-11-29 01:12:08,510 INFO L125 PetriNetUnfolderBase]: For 5408/5506 co-relation queries the response was YES. [2023-11-29 01:12:08,522 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12875 conditions, 4997 events. 2340/4997 cut-off events. For 5408/5506 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 38047 event pairs, 1672 based on Foata normal form. 136/4939 useless extension candidates. Maximal degree in co-relation 12854. Up to 3222 conditions per place. [2023-11-29 01:12:08,532 INFO L140 encePairwiseOnDemand]: 76/83 looper letters, 126 selfloop transitions, 6 changer transitions 0/154 dead transitions. [2023-11-29 01:12:08,532 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 154 transitions, 950 flow [2023-11-29 01:12:08,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 01:12:08,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 01:12:08,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 302 transitions. [2023-11-29 01:12:08,533 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.606425702811245 [2023-11-29 01:12:08,534 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 302 transitions. [2023-11-29 01:12:08,534 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 302 transitions. [2023-11-29 01:12:08,534 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:12:08,534 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 302 transitions. [2023-11-29 01:12:08,534 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 50.333333333333336) internal successors, (302), 6 states have internal predecessors, (302), 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 01:12:08,535 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 83.0) internal successors, (581), 7 states have internal predecessors, (581), 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 01:12:08,535 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 83.0) internal successors, (581), 7 states have internal predecessors, (581), 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 01:12:08,535 INFO L175 Difference]: Start difference. First operand has 103 places, 80 transitions, 315 flow. Second operand 6 states and 302 transitions. [2023-11-29 01:12:08,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 154 transitions, 950 flow [2023-11-29 01:12:08,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 154 transitions, 947 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 01:12:08,551 INFO L231 Difference]: Finished difference. Result has 108 places, 81 transitions, 336 flow [2023-11-29 01:12:08,552 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=312, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=336, PETRI_PLACES=108, PETRI_TRANSITIONS=81} [2023-11-29 01:12:08,552 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 32 predicate places. [2023-11-29 01:12:08,552 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 81 transitions, 336 flow [2023-11-29 01:12:08,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 38.4) internal successors, (192), 5 states have internal predecessors, (192), 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 01:12:08,552 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:12:08,552 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:12:08,557 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dff7acf-e88e-4758-8922-58a6f7c4dd49/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-29 01:12:08,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dff7acf-e88e-4758-8922-58a6f7c4dd49/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-11-29 01:12:08,753 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-29 01:12:08,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:12:08,753 INFO L85 PathProgramCache]: Analyzing trace with hash -346554899, now seen corresponding path program 1 times [2023-11-29 01:12:08,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:12:08,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265890570] [2023-11-29 01:12:08,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:12:08,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:12:08,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:12:08,831 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-29 01:12:08,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:12:08,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265890570] [2023-11-29 01:12:08,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265890570] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:12:08,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2088499184] [2023-11-29 01:12:08,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:12:08,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:12:08,832 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dff7acf-e88e-4758-8922-58a6f7c4dd49/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:12:08,834 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dff7acf-e88e-4758-8922-58a6f7c4dd49/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:12:08,838 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dff7acf-e88e-4758-8922-58a6f7c4dd49/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-29 01:12:08,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:12:08,950 INFO L262 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 01:12:08,951 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:12:08,981 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-29 01:12:08,981 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:12:08,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2088499184] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:12:08,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:12:08,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2023-11-29 01:12:08,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850507459] [2023-11-29 01:12:08,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:12:08,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:12:08,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:12:08,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:12:08,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-29 01:12:09,005 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 83 [2023-11-29 01:12:09,005 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 81 transitions, 336 flow. Second operand has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 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 01:12:09,006 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:12:09,006 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 83 [2023-11-29 01:12:09,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:12:09,593 INFO L124 PetriNetUnfolderBase]: 2201/4840 cut-off events. [2023-11-29 01:12:09,593 INFO L125 PetriNetUnfolderBase]: For 5769/5825 co-relation queries the response was YES. [2023-11-29 01:12:09,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12714 conditions, 4840 events. 2201/4840 cut-off events. For 5769/5825 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 37349 event pairs, 1397 based on Foata normal form. 92/4764 useless extension candidates. Maximal degree in co-relation 12691. Up to 2786 conditions per place. [2023-11-29 01:12:09,615 INFO L140 encePairwiseOnDemand]: 77/83 looper letters, 123 selfloop transitions, 6 changer transitions 0/152 dead transitions. [2023-11-29 01:12:09,615 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 152 transitions, 948 flow [2023-11-29 01:12:09,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 01:12:09,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 01:12:09,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 268 transitions. [2023-11-29 01:12:09,616 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6457831325301204 [2023-11-29 01:12:09,616 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 268 transitions. [2023-11-29 01:12:09,616 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 268 transitions. [2023-11-29 01:12:09,617 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:12:09,617 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 268 transitions. [2023-11-29 01:12:09,617 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 53.6) internal successors, (268), 5 states have internal predecessors, (268), 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 01:12:09,618 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 83.0) internal successors, (498), 6 states have internal predecessors, (498), 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 01:12:09,618 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 83.0) internal successors, (498), 6 states have internal predecessors, (498), 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 01:12:09,618 INFO L175 Difference]: Start difference. First operand has 108 places, 81 transitions, 336 flow. Second operand 5 states and 268 transitions. [2023-11-29 01:12:09,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 152 transitions, 948 flow [2023-11-29 01:12:09,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 152 transitions, 917 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-29 01:12:09,638 INFO L231 Difference]: Finished difference. Result has 106 places, 80 transitions, 329 flow [2023-11-29 01:12:09,638 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=317, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=329, PETRI_PLACES=106, PETRI_TRANSITIONS=80} [2023-11-29 01:12:09,639 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 30 predicate places. [2023-11-29 01:12:09,639 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 80 transitions, 329 flow [2023-11-29 01:12:09,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 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 01:12:09,639 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:12:09,639 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:12:09,644 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dff7acf-e88e-4758-8922-58a6f7c4dd49/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-29 01:12:09,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dff7acf-e88e-4758-8922-58a6f7c4dd49/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-11-29 01:12:09,840 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-29 01:12:09,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:12:09,840 INFO L85 PathProgramCache]: Analyzing trace with hash -346555924, now seen corresponding path program 1 times [2023-11-29 01:12:09,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:12:09,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517906292] [2023-11-29 01:12:09,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:12:09,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:12:09,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:12:09,906 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-29 01:12:09,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:12:09,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517906292] [2023-11-29 01:12:09,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517906292] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:12:09,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1409896813] [2023-11-29 01:12:09,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:12:09,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:12:09,907 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dff7acf-e88e-4758-8922-58a6f7c4dd49/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:12:09,908 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dff7acf-e88e-4758-8922-58a6f7c4dd49/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:12:09,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dff7acf-e88e-4758-8922-58a6f7c4dd49/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-29 01:12:10,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:12:10,031 INFO L262 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 01:12:10,032 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:12:10,062 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-29 01:12:10,062 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:12:10,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1409896813] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:12:10,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:12:10,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2023-11-29 01:12:10,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415295826] [2023-11-29 01:12:10,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:12:10,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:12:10,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:12:10,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:12:10,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-29 01:12:10,091 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 83 [2023-11-29 01:12:10,091 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 80 transitions, 329 flow. Second operand has 4 states, 4 states have (on average 40.75) internal successors, (163), 4 states have internal predecessors, (163), 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 01:12:10,091 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:12:10,091 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 83 [2023-11-29 01:12:10,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:12:10,656 INFO L124 PetriNetUnfolderBase]: 2450/5053 cut-off events. [2023-11-29 01:12:10,656 INFO L125 PetriNetUnfolderBase]: For 5585/5641 co-relation queries the response was YES. [2023-11-29 01:12:10,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13650 conditions, 5053 events. 2450/5053 cut-off events. For 5585/5641 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 37525 event pairs, 1552 based on Foata normal form. 86/4985 useless extension candidates. Maximal degree in co-relation 13627. Up to 3061 conditions per place. [2023-11-29 01:12:10,680 INFO L140 encePairwiseOnDemand]: 78/83 looper letters, 96 selfloop transitions, 6 changer transitions 7/129 dead transitions. [2023-11-29 01:12:10,680 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 129 transitions, 781 flow [2023-11-29 01:12:10,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:12:10,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 01:12:10,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 223 transitions. [2023-11-29 01:12:10,681 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6716867469879518 [2023-11-29 01:12:10,681 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 223 transitions. [2023-11-29 01:12:10,681 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 223 transitions. [2023-11-29 01:12:10,681 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:12:10,681 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 223 transitions. [2023-11-29 01:12:10,681 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 55.75) internal successors, (223), 4 states have internal predecessors, (223), 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 01:12:10,682 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 83.0) internal successors, (415), 5 states have internal predecessors, (415), 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 01:12:10,682 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 83.0) internal successors, (415), 5 states have internal predecessors, (415), 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 01:12:10,682 INFO L175 Difference]: Start difference. First operand has 106 places, 80 transitions, 329 flow. Second operand 4 states and 223 transitions. [2023-11-29 01:12:10,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 129 transitions, 781 flow [2023-11-29 01:12:10,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 129 transitions, 759 flow, removed 1 selfloop flow, removed 5 redundant places. [2023-11-29 01:12:10,702 INFO L231 Difference]: Finished difference. Result has 104 places, 80 transitions, 326 flow [2023-11-29 01:12:10,702 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=305, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=326, PETRI_PLACES=104, PETRI_TRANSITIONS=80} [2023-11-29 01:12:10,702 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 28 predicate places. [2023-11-29 01:12:10,702 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 80 transitions, 326 flow [2023-11-29 01:12:10,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.75) internal successors, (163), 4 states have internal predecessors, (163), 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 01:12:10,703 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:12:10,703 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:12:10,707 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dff7acf-e88e-4758-8922-58a6f7c4dd49/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-11-29 01:12:10,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dff7acf-e88e-4758-8922-58a6f7c4dd49/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-11-29 01:12:10,903 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-29 01:12:10,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:12:10,903 INFO L85 PathProgramCache]: Analyzing trace with hash 1494747136, now seen corresponding path program 1 times [2023-11-29 01:12:10,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:12:10,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549037593] [2023-11-29 01:12:10,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:12:10,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:12:10,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:12:10,986 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-29 01:12:10,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:12:10,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549037593] [2023-11-29 01:12:10,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549037593] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:12:10,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1766724748] [2023-11-29 01:12:10,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:12:10,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:12:10,986 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dff7acf-e88e-4758-8922-58a6f7c4dd49/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:12:10,987 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dff7acf-e88e-4758-8922-58a6f7c4dd49/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:12:10,994 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dff7acf-e88e-4758-8922-58a6f7c4dd49/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-29 01:12:11,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:12:11,126 INFO L262 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 01:12:11,127 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:12:11,211 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-29 01:12:11,212 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:12:11,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1766724748] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:12:11,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:12:11,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 10 [2023-11-29 01:12:11,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192467133] [2023-11-29 01:12:11,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:12:11,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 01:12:11,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:12:11,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 01:12:11,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-11-29 01:12:11,245 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 83 [2023-11-29 01:12:11,245 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 80 transitions, 326 flow. Second operand has 6 states, 6 states have (on average 37.833333333333336) internal successors, (227), 6 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:12:11,245 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:12:11,245 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 83 [2023-11-29 01:12:11,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:12:11,907 INFO L124 PetriNetUnfolderBase]: 2577/5252 cut-off events. [2023-11-29 01:12:11,908 INFO L125 PetriNetUnfolderBase]: For 6599/6693 co-relation queries the response was YES. [2023-11-29 01:12:11,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14198 conditions, 5252 events. 2577/5252 cut-off events. For 6599/6693 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 38898 event pairs, 1088 based on Foata normal form. 170/5336 useless extension candidates. Maximal degree in co-relation 14176. Up to 2226 conditions per place. [2023-11-29 01:12:11,933 INFO L140 encePairwiseOnDemand]: 74/83 looper letters, 144 selfloop transitions, 13 changer transitions 0/178 dead transitions. [2023-11-29 01:12:11,934 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 178 transitions, 1146 flow [2023-11-29 01:12:11,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 01:12:11,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 01:12:11,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 351 transitions. [2023-11-29 01:12:11,935 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6041308089500861 [2023-11-29 01:12:11,935 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 351 transitions. [2023-11-29 01:12:11,935 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 351 transitions. [2023-11-29 01:12:11,935 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:12:11,935 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 351 transitions. [2023-11-29 01:12:11,936 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 50.142857142857146) internal successors, (351), 7 states have internal predecessors, (351), 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 01:12:11,937 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 83.0) internal successors, (664), 8 states have internal predecessors, (664), 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 01:12:11,937 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 83.0) internal successors, (664), 8 states have internal predecessors, (664), 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 01:12:11,937 INFO L175 Difference]: Start difference. First operand has 104 places, 80 transitions, 326 flow. Second operand 7 states and 351 transitions. [2023-11-29 01:12:11,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 178 transitions, 1146 flow [2023-11-29 01:12:11,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 178 transitions, 1088 flow, removed 5 selfloop flow, removed 3 redundant places. [2023-11-29 01:12:11,959 INFO L231 Difference]: Finished difference. Result has 109 places, 82 transitions, 358 flow [2023-11-29 01:12:11,959 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=312, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=358, PETRI_PLACES=109, PETRI_TRANSITIONS=82} [2023-11-29 01:12:11,959 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 33 predicate places. [2023-11-29 01:12:11,959 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 82 transitions, 358 flow [2023-11-29 01:12:11,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 37.833333333333336) internal successors, (227), 6 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:12:11,960 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:12:11,960 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:12:11,964 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dff7acf-e88e-4758-8922-58a6f7c4dd49/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-11-29 01:12:12,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dff7acf-e88e-4758-8922-58a6f7c4dd49/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-11-29 01:12:12,160 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-29 01:12:12,161 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:12:12,161 INFO L85 PathProgramCache]: Analyzing trace with hash -1424797305, now seen corresponding path program 1 times [2023-11-29 01:12:12,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:12:12,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231798921] [2023-11-29 01:12:12,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:12:12,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:12:12,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:12:12,234 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-29 01:12:12,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:12:12,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231798921] [2023-11-29 01:12:12,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231798921] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:12:12,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2101982017] [2023-11-29 01:12:12,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:12:12,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:12:12,235 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dff7acf-e88e-4758-8922-58a6f7c4dd49/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:12:12,236 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dff7acf-e88e-4758-8922-58a6f7c4dd49/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:12:12,238 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dff7acf-e88e-4758-8922-58a6f7c4dd49/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-29 01:12:12,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:12:12,369 INFO L262 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 01:12:12,370 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:12:12,404 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-29 01:12:12,404 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:12:12,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2101982017] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:12:12,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:12:12,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2023-11-29 01:12:12,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508149648] [2023-11-29 01:12:12,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:12:12,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:12:12,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:12:12,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:12:12,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-29 01:12:12,440 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 83 [2023-11-29 01:12:12,441 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 82 transitions, 358 flow. Second operand has 4 states, 4 states have (on average 41.75) internal successors, (167), 4 states have internal predecessors, (167), 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 01:12:12,441 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:12:12,441 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 83 [2023-11-29 01:12:12,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:12:13,023 INFO L124 PetriNetUnfolderBase]: 2348/4999 cut-off events. [2023-11-29 01:12:13,023 INFO L125 PetriNetUnfolderBase]: For 7001/7057 co-relation queries the response was YES. [2023-11-29 01:12:13,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14271 conditions, 4999 events. 2348/4999 cut-off events. For 7001/7057 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 37981 event pairs, 1818 based on Foata normal form. 92/4983 useless extension candidates. Maximal degree in co-relation 14247. Up to 3537 conditions per place. [2023-11-29 01:12:13,077 INFO L140 encePairwiseOnDemand]: 79/83 looper letters, 84 selfloop transitions, 3 changer transitions 24/133 dead transitions. [2023-11-29 01:12:13,078 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 133 transitions, 876 flow [2023-11-29 01:12:13,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:12:13,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 01:12:13,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 224 transitions. [2023-11-29 01:12:13,079 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6746987951807228 [2023-11-29 01:12:13,079 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 224 transitions. [2023-11-29 01:12:13,079 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 224 transitions. [2023-11-29 01:12:13,079 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:12:13,079 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 224 transitions. [2023-11-29 01:12:13,080 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 56.0) internal successors, (224), 4 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:12:13,080 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 83.0) internal successors, (415), 5 states have internal predecessors, (415), 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 01:12:13,080 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 83.0) internal successors, (415), 5 states have internal predecessors, (415), 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 01:12:13,080 INFO L175 Difference]: Start difference. First operand has 109 places, 82 transitions, 358 flow. Second operand 4 states and 224 transitions. [2023-11-29 01:12:13,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 133 transitions, 876 flow [2023-11-29 01:12:13,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 133 transitions, 842 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-29 01:12:13,108 INFO L231 Difference]: Finished difference. Result has 107 places, 73 transitions, 293 flow [2023-11-29 01:12:13,108 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=338, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=293, PETRI_PLACES=107, PETRI_TRANSITIONS=73} [2023-11-29 01:12:13,109 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 31 predicate places. [2023-11-29 01:12:13,109 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 73 transitions, 293 flow [2023-11-29 01:12:13,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.75) internal successors, (167), 4 states have internal predecessors, (167), 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 01:12:13,109 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:12:13,109 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:12:13,114 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dff7acf-e88e-4758-8922-58a6f7c4dd49/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-11-29 01:12:13,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dff7acf-e88e-4758-8922-58a6f7c4dd49/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-11-29 01:12:13,310 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-29 01:12:13,310 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:12:13,311 INFO L85 PathProgramCache]: Analyzing trace with hash 39838936, now seen corresponding path program 1 times [2023-11-29 01:12:13,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:12:13,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507646832] [2023-11-29 01:12:13,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:12:13,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:12:13,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:12:13,381 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-29 01:12:13,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:12:13,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507646832] [2023-11-29 01:12:13,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507646832] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:12:13,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1866388457] [2023-11-29 01:12:13,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:12:13,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:12:13,382 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dff7acf-e88e-4758-8922-58a6f7c4dd49/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:12:13,383 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dff7acf-e88e-4758-8922-58a6f7c4dd49/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:12:13,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dff7acf-e88e-4758-8922-58a6f7c4dd49/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-29 01:12:13,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:12:13,517 INFO L262 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 01:12:13,518 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:12:13,547 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-29 01:12:13,547 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:12:13,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1866388457] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:12:13,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:12:13,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2023-11-29 01:12:13,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136659393] [2023-11-29 01:12:13,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:12:13,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:12:13,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:12:13,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:12:13,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-29 01:12:13,572 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 83 [2023-11-29 01:12:13,573 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 73 transitions, 293 flow. Second operand has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 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 01:12:13,573 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:12:13,573 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 83 [2023-11-29 01:12:13,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:12:14,081 INFO L124 PetriNetUnfolderBase]: 1631/3750 cut-off events. [2023-11-29 01:12:14,082 INFO L125 PetriNetUnfolderBase]: For 4129/4151 co-relation queries the response was YES. [2023-11-29 01:12:14,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10017 conditions, 3750 events. 1631/3750 cut-off events. For 4129/4151 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 28564 event pairs, 869 based on Foata normal form. 58/3724 useless extension candidates. Maximal degree in co-relation 9994. Up to 1678 conditions per place. [2023-11-29 01:12:14,103 INFO L140 encePairwiseOnDemand]: 78/83 looper letters, 117 selfloop transitions, 6 changer transitions 0/144 dead transitions. [2023-11-29 01:12:14,103 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 144 transitions, 881 flow [2023-11-29 01:12:14,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 01:12:14,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 01:12:14,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 264 transitions. [2023-11-29 01:12:14,104 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.636144578313253 [2023-11-29 01:12:14,104 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 264 transitions. [2023-11-29 01:12:14,104 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 264 transitions. [2023-11-29 01:12:14,104 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:12:14,104 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 264 transitions. [2023-11-29 01:12:14,105 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 52.8) internal successors, (264), 5 states have internal predecessors, (264), 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 01:12:14,105 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 83.0) internal successors, (498), 6 states have internal predecessors, (498), 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 01:12:14,105 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 83.0) internal successors, (498), 6 states have internal predecessors, (498), 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 01:12:14,105 INFO L175 Difference]: Start difference. First operand has 107 places, 73 transitions, 293 flow. Second operand 5 states and 264 transitions. [2023-11-29 01:12:14,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 144 transitions, 881 flow [2023-11-29 01:12:14,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 144 transitions, 824 flow, removed 5 selfloop flow, removed 10 redundant places. [2023-11-29 01:12:14,125 INFO L231 Difference]: Finished difference. Result has 96 places, 72 transitions, 272 flow [2023-11-29 01:12:14,126 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=272, PETRI_PLACES=96, PETRI_TRANSITIONS=72} [2023-11-29 01:12:14,126 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 20 predicate places. [2023-11-29 01:12:14,126 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 72 transitions, 272 flow [2023-11-29 01:12:14,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 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 01:12:14,126 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:12:14,126 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:12:14,131 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dff7acf-e88e-4758-8922-58a6f7c4dd49/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-11-29 01:12:14,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dff7acf-e88e-4758-8922-58a6f7c4dd49/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-11-29 01:12:14,327 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-29 01:12:14,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:12:14,327 INFO L85 PathProgramCache]: Analyzing trace with hash 39837911, now seen corresponding path program 1 times [2023-11-29 01:12:14,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:12:14,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444221190] [2023-11-29 01:12:14,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:12:14,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:12:14,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:12:14,397 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-29 01:12:14,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:12:14,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444221190] [2023-11-29 01:12:14,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444221190] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:12:14,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [967992773] [2023-11-29 01:12:14,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:12:14,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:12:14,397 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dff7acf-e88e-4758-8922-58a6f7c4dd49/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:12:14,398 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dff7acf-e88e-4758-8922-58a6f7c4dd49/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:12:14,402 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dff7acf-e88e-4758-8922-58a6f7c4dd49/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-29 01:12:14,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:12:14,537 INFO L262 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 01:12:14,538 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:12:14,570 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-29 01:12:14,570 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:12:14,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [967992773] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:12:14,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:12:14,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2023-11-29 01:12:14,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604905706] [2023-11-29 01:12:14,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:12:14,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:12:14,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:12:14,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:12:14,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-29 01:12:14,598 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 83 [2023-11-29 01:12:14,598 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 72 transitions, 272 flow. Second operand has 4 states, 4 states have (on average 41.25) internal successors, (165), 4 states have internal predecessors, (165), 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 01:12:14,598 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:12:14,598 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 83 [2023-11-29 01:12:14,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:12:15,087 INFO L124 PetriNetUnfolderBase]: 2026/4085 cut-off events. [2023-11-29 01:12:15,087 INFO L125 PetriNetUnfolderBase]: For 3711/3737 co-relation queries the response was YES. [2023-11-29 01:12:15,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10951 conditions, 4085 events. 2026/4085 cut-off events. For 3711/3737 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 28577 event pairs, 1015 based on Foata normal form. 108/4099 useless extension candidates. Maximal degree in co-relation 10932. Up to 1940 conditions per place. [2023-11-29 01:12:15,104 INFO L140 encePairwiseOnDemand]: 79/83 looper letters, 99 selfloop transitions, 3 changer transitions 2/122 dead transitions. [2023-11-29 01:12:15,104 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 122 transitions, 702 flow [2023-11-29 01:12:15,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:12:15,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 01:12:15,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 221 transitions. [2023-11-29 01:12:15,105 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6656626506024096 [2023-11-29 01:12:15,105 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 221 transitions. [2023-11-29 01:12:15,105 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 221 transitions. [2023-11-29 01:12:15,105 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:12:15,105 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 221 transitions. [2023-11-29 01:12:15,105 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 55.25) internal successors, (221), 4 states have internal predecessors, (221), 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 01:12:15,106 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 83.0) internal successors, (415), 5 states have internal predecessors, (415), 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 01:12:15,106 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 83.0) internal successors, (415), 5 states have internal predecessors, (415), 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 01:12:15,106 INFO L175 Difference]: Start difference. First operand has 96 places, 72 transitions, 272 flow. Second operand 4 states and 221 transitions. [2023-11-29 01:12:15,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 122 transitions, 702 flow [2023-11-29 01:12:15,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 122 transitions, 689 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-29 01:12:15,123 INFO L231 Difference]: Finished difference. Result has 95 places, 71 transitions, 263 flow [2023-11-29 01:12:15,123 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=257, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=263, PETRI_PLACES=95, PETRI_TRANSITIONS=71} [2023-11-29 01:12:15,123 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 19 predicate places. [2023-11-29 01:12:15,123 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 71 transitions, 263 flow [2023-11-29 01:12:15,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.25) internal successors, (165), 4 states have internal predecessors, (165), 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 01:12:15,123 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:12:15,123 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:12:15,129 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dff7acf-e88e-4758-8922-58a6f7c4dd49/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-11-29 01:12:15,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dff7acf-e88e-4758-8922-58a6f7c4dd49/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:12:15,324 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-29 01:12:15,324 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:12:15,324 INFO L85 PathProgramCache]: Analyzing trace with hash 1963477019, now seen corresponding path program 1 times [2023-11-29 01:12:15,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:12:15,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378349498] [2023-11-29 01:12:15,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:12:15,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:12:15,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:12:15,400 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-29 01:12:15,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:12:15,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378349498] [2023-11-29 01:12:15,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378349498] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:12:15,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1115214299] [2023-11-29 01:12:15,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:12:15,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:12:15,401 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dff7acf-e88e-4758-8922-58a6f7c4dd49/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:12:15,402 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dff7acf-e88e-4758-8922-58a6f7c4dd49/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:12:15,406 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dff7acf-e88e-4758-8922-58a6f7c4dd49/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-29 01:12:15,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:12:15,539 INFO L262 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 01:12:15,540 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:12:15,569 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-29 01:12:15,570 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:12:15,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1115214299] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:12:15,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:12:15,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2023-11-29 01:12:15,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001192413] [2023-11-29 01:12:15,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:12:15,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:12:15,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:12:15,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:12:15,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-29 01:12:15,593 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 83 [2023-11-29 01:12:15,593 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 71 transitions, 263 flow. Second operand has 4 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 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 01:12:15,593 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:12:15,593 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 83 [2023-11-29 01:12:15,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:12:15,977 INFO L124 PetriNetUnfolderBase]: 1473/3202 cut-off events. [2023-11-29 01:12:15,978 INFO L125 PetriNetUnfolderBase]: For 2540/2550 co-relation queries the response was YES. [2023-11-29 01:12:15,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8436 conditions, 3202 events. 1473/3202 cut-off events. For 2540/2550 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 22708 event pairs, 1015 based on Foata normal form. 104/3212 useless extension candidates. Maximal degree in co-relation 8418. Up to 1940 conditions per place. [2023-11-29 01:12:15,987 INFO L140 encePairwiseOnDemand]: 80/83 looper letters, 0 selfloop transitions, 0 changer transitions 118/118 dead transitions. [2023-11-29 01:12:15,987 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 118 transitions, 667 flow [2023-11-29 01:12:15,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:12:15,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 01:12:15,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 219 transitions. [2023-11-29 01:12:15,988 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6596385542168675 [2023-11-29 01:12:15,988 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 219 transitions. [2023-11-29 01:12:15,988 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 219 transitions. [2023-11-29 01:12:15,988 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:12:15,988 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 219 transitions. [2023-11-29 01:12:15,988 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 54.75) internal successors, (219), 4 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:12:15,989 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 83.0) internal successors, (415), 5 states have internal predecessors, (415), 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 01:12:15,989 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 83.0) internal successors, (415), 5 states have internal predecessors, (415), 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 01:12:15,989 INFO L175 Difference]: Start difference. First operand has 95 places, 71 transitions, 263 flow. Second operand 4 states and 219 transitions. [2023-11-29 01:12:15,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 118 transitions, 667 flow [2023-11-29 01:12:15,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 118 transitions, 659 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-11-29 01:12:15,998 INFO L231 Difference]: Finished difference. Result has 94 places, 0 transitions, 0 flow [2023-11-29 01:12:15,999 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=251, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=94, PETRI_TRANSITIONS=0} [2023-11-29 01:12:15,999 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 18 predicate places. [2023-11-29 01:12:15,999 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 0 transitions, 0 flow [2023-11-29 01:12:15,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 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 01:12:16,001 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (37 of 38 remaining) [2023-11-29 01:12:16,002 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (36 of 38 remaining) [2023-11-29 01:12:16,002 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (35 of 38 remaining) [2023-11-29 01:12:16,002 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (34 of 38 remaining) [2023-11-29 01:12:16,002 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 38 remaining) [2023-11-29 01:12:16,002 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 38 remaining) [2023-11-29 01:12:16,002 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 38 remaining) [2023-11-29 01:12:16,002 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 38 remaining) [2023-11-29 01:12:16,002 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 38 remaining) [2023-11-29 01:12:16,003 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 38 remaining) [2023-11-29 01:12:16,003 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 38 remaining) [2023-11-29 01:12:16,003 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 38 remaining) [2023-11-29 01:12:16,003 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 38 remaining) [2023-11-29 01:12:16,003 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 38 remaining) [2023-11-29 01:12:16,004 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 38 remaining) [2023-11-29 01:12:16,004 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 38 remaining) [2023-11-29 01:12:16,004 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 38 remaining) [2023-11-29 01:12:16,004 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 38 remaining) [2023-11-29 01:12:16,004 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 38 remaining) [2023-11-29 01:12:16,005 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 38 remaining) [2023-11-29 01:12:16,005 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 38 remaining) [2023-11-29 01:12:16,005 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 38 remaining) [2023-11-29 01:12:16,005 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 38 remaining) [2023-11-29 01:12:16,005 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 38 remaining) [2023-11-29 01:12:16,005 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 38 remaining) [2023-11-29 01:12:16,006 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 38 remaining) [2023-11-29 01:12:16,006 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 38 remaining) [2023-11-29 01:12:16,006 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 38 remaining) [2023-11-29 01:12:16,006 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 38 remaining) [2023-11-29 01:12:16,006 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 38 remaining) [2023-11-29 01:12:16,006 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 38 remaining) [2023-11-29 01:12:16,007 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 38 remaining) [2023-11-29 01:12:16,007 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 38 remaining) [2023-11-29 01:12:16,007 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 38 remaining) [2023-11-29 01:12:16,007 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 38 remaining) [2023-11-29 01:12:16,007 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 38 remaining) [2023-11-29 01:12:16,007 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 38 remaining) [2023-11-29 01:12:16,008 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 38 remaining) [2023-11-29 01:12:16,012 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dff7acf-e88e-4758-8922-58a6f7c4dd49/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2023-11-29 01:12:16,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dff7acf-e88e-4758-8922-58a6f7c4dd49/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2023-11-29 01:12:16,210 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:12:16,215 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-29 01:12:16,215 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-29 01:12:16,219 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 01:12:16 BasicIcfg [2023-11-29 01:12:16,219 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-29 01:12:16,220 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-29 01:12:16,220 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-29 01:12:16,220 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-29 01:12:16,220 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:11:50" (3/4) ... [2023-11-29 01:12:16,222 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-29 01:12:16,224 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-11-29 01:12:16,224 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-11-29 01:12:16,230 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 121 nodes and edges [2023-11-29 01:12:16,231 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 23 nodes and edges [2023-11-29 01:12:16,231 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2023-11-29 01:12:16,231 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-11-29 01:12:16,320 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dff7acf-e88e-4758-8922-58a6f7c4dd49/bin/uautomizer-verify-BQ2R08f2Ya/witness.graphml [2023-11-29 01:12:16,320 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dff7acf-e88e-4758-8922-58a6f7c4dd49/bin/uautomizer-verify-BQ2R08f2Ya/witness.yml [2023-11-29 01:12:16,321 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-29 01:12:16,321 INFO L158 Benchmark]: Toolchain (without parser) took 27368.23ms. Allocated memory was 142.6MB in the beginning and 702.5MB in the end (delta: 559.9MB). Free memory was 104.3MB in the beginning and 266.3MB in the end (delta: -162.0MB). Peak memory consumption was 399.3MB. Max. memory is 16.1GB. [2023-11-29 01:12:16,322 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 109.1MB. Free memory was 62.1MB in the beginning and 61.8MB in the end (delta: 321.6kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 01:12:16,322 INFO L158 Benchmark]: CACSL2BoogieTranslator took 254.28ms. Allocated memory is still 142.6MB. Free memory was 104.3MB in the beginning and 91.7MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-29 01:12:16,322 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.26ms. Allocated memory is still 142.6MB. Free memory was 91.7MB in the beginning and 89.0MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 01:12:16,323 INFO L158 Benchmark]: Boogie Preprocessor took 61.78ms. Allocated memory is still 142.6MB. Free memory was 89.0MB in the beginning and 86.1MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-29 01:12:16,323 INFO L158 Benchmark]: RCFGBuilder took 823.38ms. Allocated memory is still 142.6MB. Free memory was 86.1MB in the beginning and 73.8MB in the end (delta: 12.3MB). Peak memory consumption was 45.5MB. Max. memory is 16.1GB. [2023-11-29 01:12:16,324 INFO L158 Benchmark]: TraceAbstraction took 26073.25ms. Allocated memory was 142.6MB in the beginning and 702.5MB in the end (delta: 559.9MB). Free memory was 72.8MB in the beginning and 271.5MB in the end (delta: -198.7MB). Peak memory consumption was 362.2MB. Max. memory is 16.1GB. [2023-11-29 01:12:16,324 INFO L158 Benchmark]: Witness Printer took 100.90ms. Allocated memory is still 702.5MB. Free memory was 271.5MB in the beginning and 266.3MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-29 01:12:16,326 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 109.1MB. Free memory was 62.1MB in the beginning and 61.8MB in the end (delta: 321.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 254.28ms. Allocated memory is still 142.6MB. Free memory was 104.3MB in the beginning and 91.7MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 48.26ms. Allocated memory is still 142.6MB. Free memory was 91.7MB in the beginning and 89.0MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 61.78ms. Allocated memory is still 142.6MB. Free memory was 89.0MB in the beginning and 86.1MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 823.38ms. Allocated memory is still 142.6MB. Free memory was 86.1MB in the beginning and 73.8MB in the end (delta: 12.3MB). Peak memory consumption was 45.5MB. Max. memory is 16.1GB. * TraceAbstraction took 26073.25ms. Allocated memory was 142.6MB in the beginning and 702.5MB in the end (delta: 559.9MB). Free memory was 72.8MB in the beginning and 271.5MB in the end (delta: -198.7MB). Peak memory consumption was 362.2MB. Max. memory is 16.1GB. * Witness Printer took 100.90ms. Allocated memory is still 702.5MB. Free memory was 271.5MB in the beginning and 266.3MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 60]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 60]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 130]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 130]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 131]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 132]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 131]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 132]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 81]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 81]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 130]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 130]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 131]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 132]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 131]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 132]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 123]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 123]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 112]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 112]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 129 locations, 38 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 26.0s, OverallIterations: 31, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 15.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1951 SdHoareTripleChecker+Valid, 3.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1680 mSDsluCounter, 208 SdHoareTripleChecker+Invalid, 3.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 119 mSDsCounter, 83 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5140 IncrementalHoareTripleChecker+Invalid, 5223 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 83 mSolverCounterUnsat, 89 mSDtfsCounter, 5140 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 694 GetRequests, 494 SyntacticMatches, 1 SemanticMatches, 199 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=358occurred in iteration=27, InterpolantAutomatonStates: 152, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 3.1s InterpolantComputationTime, 1137 NumberOfCodeBlocks, 1125 NumberOfCodeBlocksAsserted, 52 NumberOfCheckSat, 1120 ConstructedInterpolants, 0 QuantifiedInterpolants, 2574 SizeOfPredicates, 31 NumberOfNonLiveVariables, 3722 ConjunctsInSsa, 83 ConjunctsInUnsatCore, 54 InterpolantComputations, 28 PerfectInterpolantSequences, 591/662 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 20 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-29 01:12:16,343 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6dff7acf-e88e-4758-8922-58a6f7c4dd49/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE