./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-node-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_26396cbe-f567-4919-8f72-969e62029743/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26396cbe-f567-4919-8f72-969e62029743/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_26396cbe-f567-4919-8f72-969e62029743/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26396cbe-f567-4919-8f72-969e62029743/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-node-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26396cbe-f567-4919-8f72-969e62029743/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_26396cbe-f567-4919-8f72-969e62029743/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 9db11e263e78e3a6bd75c2a0c3dda64920ec857df2fbb1d0b7b1072a48f36a31 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-28 23:51:55,067 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-28 23:51:55,136 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26396cbe-f567-4919-8f72-969e62029743/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-28 23:51:55,141 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-28 23:51:55,142 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-28 23:51:55,168 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-28 23:51:55,169 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-28 23:51:55,170 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-28 23:51:55,170 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-28 23:51:55,171 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-28 23:51:55,172 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-28 23:51:55,172 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-28 23:51:55,173 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-28 23:51:55,174 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-28 23:51:55,174 INFO L153 SettingsManager]: * Use SBE=true [2023-11-28 23:51:55,175 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-28 23:51:55,176 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-28 23:51:55,176 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-28 23:51:55,177 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-28 23:51:55,177 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-28 23:51:55,178 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-28 23:51:55,178 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-28 23:51:55,179 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-28 23:51:55,179 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-28 23:51:55,180 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-28 23:51:55,180 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-28 23:51:55,181 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-28 23:51:55,181 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-28 23:51:55,181 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-28 23:51:55,182 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-28 23:51:55,182 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-28 23:51:55,183 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-28 23:51:55,183 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-28 23:51:55,184 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-28 23:51:55,184 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-28 23:51:55,184 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-28 23:51:55,184 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-28 23:51:55,185 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-28 23:51:55,185 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-28 23:51:55,185 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-28 23:51:55,185 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-28 23:51:55,186 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-28 23:51:55,186 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-28 23:51:55,186 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-28 23:51:55,186 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_26396cbe-f567-4919-8f72-969e62029743/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26396cbe-f567-4919-8f72-969e62029743/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9db11e263e78e3a6bd75c2a0c3dda64920ec857df2fbb1d0b7b1072a48f36a31 [2023-11-28 23:51:55,420 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-28 23:51:55,441 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-28 23:51:55,444 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-28 23:51:55,445 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-28 23:51:55,445 INFO L274 PluginConnector]: CDTParser initialized [2023-11-28 23:51:55,447 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26396cbe-f567-4919-8f72-969e62029743/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/weaver/chl-node-symm.wvr.c [2023-11-28 23:51:58,332 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-28 23:51:58,516 INFO L384 CDTParser]: Found 1 translation units. [2023-11-28 23:51:58,517 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26396cbe-f567-4919-8f72-969e62029743/sv-benchmarks/c/weaver/chl-node-symm.wvr.c [2023-11-28 23:51:58,526 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26396cbe-f567-4919-8f72-969e62029743/bin/uautomizer-verify-BQ2R08f2Ya/data/b6d11f951/adcf3dc87a5342dabda127eee14ca62e/FLAG0ad970e81 [2023-11-28 23:51:58,541 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26396cbe-f567-4919-8f72-969e62029743/bin/uautomizer-verify-BQ2R08f2Ya/data/b6d11f951/adcf3dc87a5342dabda127eee14ca62e [2023-11-28 23:51:58,543 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-28 23:51:58,545 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-28 23:51:58,547 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-28 23:51:58,547 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-28 23:51:58,552 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-28 23:51:58,553 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:51:58" (1/1) ... [2023-11-28 23:51:58,554 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41925e70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:51:58, skipping insertion in model container [2023-11-28 23:51:58,554 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:51:58" (1/1) ... [2023-11-28 23:51:58,582 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-28 23:51:58,776 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-28 23:51:58,787 INFO L202 MainTranslator]: Completed pre-run [2023-11-28 23:51:58,821 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-28 23:51:58,835 INFO L206 MainTranslator]: Completed translation [2023-11-28 23:51:58,836 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:51:58 WrapperNode [2023-11-28 23:51:58,836 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-28 23:51:58,837 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-28 23:51:58,837 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-28 23:51:58,837 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-28 23:51:58,842 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:51:58" (1/1) ... [2023-11-28 23:51:58,851 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:51:58" (1/1) ... [2023-11-28 23:51:58,888 INFO L138 Inliner]: procedures = 26, calls = 51, calls flagged for inlining = 19, calls inlined = 25, statements flattened = 347 [2023-11-28 23:51:58,889 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-28 23:51:58,889 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-28 23:51:58,890 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-28 23:51:58,890 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-28 23:51:58,901 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:51:58" (1/1) ... [2023-11-28 23:51:58,901 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:51:58" (1/1) ... [2023-11-28 23:51:58,907 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:51:58" (1/1) ... [2023-11-28 23:51:58,928 INFO L175 MemorySlicer]: Split 22 memory accesses to 5 slices as follows [2, 6, 2, 2, 10]. 45 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 6 writes are split as follows [0, 2, 1, 1, 2]. [2023-11-28 23:51:58,929 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:51:58" (1/1) ... [2023-11-28 23:51:58,929 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:51:58" (1/1) ... [2023-11-28 23:51:58,943 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:51:58" (1/1) ... [2023-11-28 23:51:58,948 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:51:58" (1/1) ... [2023-11-28 23:51:58,951 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:51:58" (1/1) ... [2023-11-28 23:51:58,954 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:51:58" (1/1) ... [2023-11-28 23:51:58,959 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-28 23:51:58,961 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-28 23:51:58,961 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-28 23:51:58,961 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-28 23:51:58,962 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:51:58" (1/1) ... [2023-11-28 23:51:58,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-28 23:51:58,977 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26396cbe-f567-4919-8f72-969e62029743/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:51:58,988 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26396cbe-f567-4919-8f72-969e62029743/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-28 23:51:58,996 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26396cbe-f567-4919-8f72-969e62029743/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-28 23:51:59,020 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-28 23:51:59,021 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-28 23:51:59,021 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-28 23:51:59,021 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-28 23:51:59,021 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-28 23:51:59,021 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-28 23:51:59,021 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-28 23:51:59,021 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-28 23:51:59,022 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-28 23:51:59,022 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-28 23:51:59,022 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-28 23:51:59,022 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-28 23:51:59,022 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-28 23:51:59,022 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-28 23:51:59,023 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-28 23:51:59,023 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-28 23:51:59,023 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-28 23:51:59,023 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-28 23:51:59,023 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-28 23:51:59,023 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-28 23:51:59,023 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-28 23:51:59,024 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-28 23:51:59,024 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-28 23:51:59,024 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-28 23:51:59,024 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-28 23:51:59,026 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-28 23:51:59,177 INFO L241 CfgBuilder]: Building ICFG [2023-11-28 23:51:59,179 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-28 23:51:59,685 INFO L282 CfgBuilder]: Performing block encoding [2023-11-28 23:52:00,009 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-28 23:52:00,009 INFO L309 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-28 23:52:00,010 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:52:00 BoogieIcfgContainer [2023-11-28 23:52:00,010 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-28 23:52:00,012 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-28 23:52:00,012 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-28 23:52:00,014 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-28 23:52:00,015 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 11:51:58" (1/3) ... [2023-11-28 23:52:00,015 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@346ec9ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 11:52:00, skipping insertion in model container [2023-11-28 23:52:00,015 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:51:58" (2/3) ... [2023-11-28 23:52:00,016 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@346ec9ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 11:52:00, skipping insertion in model container [2023-11-28 23:52:00,016 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:52:00" (3/3) ... [2023-11-28 23:52:00,017 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-node-symm.wvr.c [2023-11-28 23:52:00,024 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-28 23:52:00,032 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-28 23:52:00,032 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2023-11-28 23:52:00,032 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-28 23:52:00,093 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-28 23:52:00,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 96 places, 99 transitions, 212 flow [2023-11-28 23:52:00,160 INFO L124 PetriNetUnfolderBase]: 10/97 cut-off events. [2023-11-28 23:52:00,160 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-28 23:52:00,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106 conditions, 97 events. 10/97 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 244 event pairs, 0 based on Foata normal form. 0/57 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2023-11-28 23:52:00,164 INFO L82 GeneralOperation]: Start removeDead. Operand has 96 places, 99 transitions, 212 flow [2023-11-28 23:52:00,168 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 93 places, 96 transitions, 204 flow [2023-11-28 23:52:00,178 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-28 23:52:00,184 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;@10f2118, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-28 23:52:00,184 INFO L358 AbstractCegarLoop]: Starting to check reachability of 44 error locations. [2023-11-28 23:52:00,186 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-28 23:52:00,186 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2023-11-28 23:52:00,187 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-28 23:52:00,187 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:52:00,187 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-28 23:52:00,188 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-28 23:52:00,191 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:52:00,192 INFO L85 PathProgramCache]: Analyzing trace with hash 33389, now seen corresponding path program 1 times [2023-11-28 23:52:00,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:52:00,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294555230] [2023-11-28 23:52:00,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:52:00,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:52:00,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:52:00,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:52:00,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:52:00,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294555230] [2023-11-28 23:52:00,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294555230] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:52:00,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:52:00,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-28 23:52:00,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103126836] [2023-11-28 23:52:00,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:52:00,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 23:52:00,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:52:00,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 23:52:00,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 23:52:00,433 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 99 [2023-11-28 23:52:00,435 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 96 transitions, 204 flow. Second operand has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:00,435 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:52:00,435 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 99 [2023-11-28 23:52:00,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:52:00,664 INFO L124 PetriNetUnfolderBase]: 296/752 cut-off events. [2023-11-28 23:52:00,664 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2023-11-28 23:52:00,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1250 conditions, 752 events. 296/752 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 4487 event pairs, 184 based on Foata normal form. 4/594 useless extension candidates. Maximal degree in co-relation 1096. Up to 470 conditions per place. [2023-11-28 23:52:00,673 INFO L140 encePairwiseOnDemand]: 94/99 looper letters, 42 selfloop transitions, 1 changer transitions 3/92 dead transitions. [2023-11-28 23:52:00,674 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 92 transitions, 284 flow [2023-11-28 23:52:00,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 23:52:00,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-28 23:52:00,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 198 transitions. [2023-11-28 23:52:00,688 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2023-11-28 23:52:00,688 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 198 transitions. [2023-11-28 23:52:00,689 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 198 transitions. [2023-11-28 23:52:00,690 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:52:00,693 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 198 transitions. [2023-11-28 23:52:00,696 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:00,700 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:00,700 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:00,702 INFO L175 Difference]: Start difference. First operand has 93 places, 96 transitions, 204 flow. Second operand 3 states and 198 transitions. [2023-11-28 23:52:00,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 92 transitions, 284 flow [2023-11-28 23:52:00,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 92 transitions, 276 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-28 23:52:00,710 INFO L231 Difference]: Finished difference. Result has 87 places, 89 transitions, 183 flow [2023-11-28 23:52:00,712 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=183, PETRI_PLACES=87, PETRI_TRANSITIONS=89} [2023-11-28 23:52:00,716 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, -6 predicate places. [2023-11-28 23:52:00,716 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 89 transitions, 183 flow [2023-11-28 23:52:00,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:00,717 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:52:00,717 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-28 23:52:00,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-28 23:52:00,717 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-28 23:52:00,718 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:52:00,718 INFO L85 PathProgramCache]: Analyzing trace with hash 1036071, now seen corresponding path program 1 times [2023-11-28 23:52:00,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:52:00,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190604178] [2023-11-28 23:52:00,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:52:00,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:52:00,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:52:00,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:52:00,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:52:00,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190604178] [2023-11-28 23:52:00,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190604178] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:52:00,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:52:00,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-28 23:52:00,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34348557] [2023-11-28 23:52:00,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:52:00,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 23:52:00,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:52:00,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 23:52:00,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 23:52:00,800 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 99 [2023-11-28 23:52:00,801 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 89 transitions, 183 flow. Second operand has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:00,801 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:52:00,801 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 99 [2023-11-28 23:52:00,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:52:00,953 INFO L124 PetriNetUnfolderBase]: 296/747 cut-off events. [2023-11-28 23:52:00,954 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-11-28 23:52:00,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1226 conditions, 747 events. 296/747 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 4454 event pairs, 184 based on Foata normal form. 0/587 useless extension candidates. Maximal degree in co-relation 1220. Up to 467 conditions per place. [2023-11-28 23:52:00,961 INFO L140 encePairwiseOnDemand]: 96/99 looper letters, 40 selfloop transitions, 1 changer transitions 0/87 dead transitions. [2023-11-28 23:52:00,961 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 87 transitions, 261 flow [2023-11-28 23:52:00,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 23:52:00,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-28 23:52:00,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 193 transitions. [2023-11-28 23:52:00,963 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6498316498316499 [2023-11-28 23:52:00,963 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 193 transitions. [2023-11-28 23:52:00,964 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 193 transitions. [2023-11-28 23:52:00,964 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:52:00,964 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 193 transitions. [2023-11-28 23:52:00,966 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:00,967 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:00,968 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:00,968 INFO L175 Difference]: Start difference. First operand has 87 places, 89 transitions, 183 flow. Second operand 3 states and 193 transitions. [2023-11-28 23:52:00,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 87 transitions, 261 flow [2023-11-28 23:52:00,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 87 transitions, 260 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-28 23:52:00,971 INFO L231 Difference]: Finished difference. Result has 83 places, 87 transitions, 180 flow [2023-11-28 23:52:00,971 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=180, PETRI_PLACES=83, PETRI_TRANSITIONS=87} [2023-11-28 23:52:00,972 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, -10 predicate places. [2023-11-28 23:52:00,972 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 87 transitions, 180 flow [2023-11-28 23:52:00,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:00,973 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:52:00,973 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-28 23:52:00,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-28 23:52:00,974 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-28 23:52:00,974 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:52:00,974 INFO L85 PathProgramCache]: Analyzing trace with hash 995697060, now seen corresponding path program 1 times [2023-11-28 23:52:00,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:52:00,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543847635] [2023-11-28 23:52:00,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:52:00,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:52:00,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:52:01,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:52:01,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:52:01,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543847635] [2023-11-28 23:52:01,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543847635] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:52:01,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:52:01,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 23:52:01,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957838477] [2023-11-28 23:52:01,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:52:01,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 23:52:01,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:52:01,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 23:52:01,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-28 23:52:01,087 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 99 [2023-11-28 23:52:01,088 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 87 transitions, 180 flow. Second operand has 4 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) [2023-11-28 23:52:01,088 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:52:01,088 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 99 [2023-11-28 23:52:01,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:52:01,337 INFO L124 PetriNetUnfolderBase]: 298/755 cut-off events. [2023-11-28 23:52:01,337 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-11-28 23:52:01,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1245 conditions, 755 events. 298/755 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 4497 event pairs, 184 based on Foata normal form. 2/595 useless extension candidates. Maximal degree in co-relation 1238. Up to 474 conditions per place. [2023-11-28 23:52:01,344 INFO L140 encePairwiseOnDemand]: 87/99 looper letters, 43 selfloop transitions, 8 changer transitions 0/93 dead transitions. [2023-11-28 23:52:01,344 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 93 transitions, 294 flow [2023-11-28 23:52:01,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-28 23:52:01,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-28 23:52:01,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 255 transitions. [2023-11-28 23:52:01,347 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6439393939393939 [2023-11-28 23:52:01,347 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 255 transitions. [2023-11-28 23:52:01,347 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 255 transitions. [2023-11-28 23:52:01,347 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:52:01,348 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 255 transitions. [2023-11-28 23:52:01,349 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 63.75) internal successors, (255), 4 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:01,351 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 99.0) internal successors, (495), 5 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:01,352 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 99.0) internal successors, (495), 5 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:01,352 INFO L175 Difference]: Start difference. First operand has 83 places, 87 transitions, 180 flow. Second operand 4 states and 255 transitions. [2023-11-28 23:52:01,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 93 transitions, 294 flow [2023-11-28 23:52:01,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 93 transitions, 293 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-28 23:52:01,356 INFO L231 Difference]: Finished difference. Result has 87 places, 93 transitions, 237 flow [2023-11-28 23:52:01,356 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=179, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=237, PETRI_PLACES=87, PETRI_TRANSITIONS=93} [2023-11-28 23:52:01,357 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, -6 predicate places. [2023-11-28 23:52:01,357 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 93 transitions, 237 flow [2023-11-28 23:52:01,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 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) [2023-11-28 23:52:01,358 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:52:01,358 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-28 23:52:01,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-28 23:52:01,358 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-28 23:52:01,359 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:52:01,359 INFO L85 PathProgramCache]: Analyzing trace with hash 995697071, now seen corresponding path program 1 times [2023-11-28 23:52:01,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:52:01,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111378663] [2023-11-28 23:52:01,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:52:01,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:52:01,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:52:01,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:52:01,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:52:01,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111378663] [2023-11-28 23:52:01,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111378663] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:52:01,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:52:01,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-28 23:52:01,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571241515] [2023-11-28 23:52:01,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:52:01,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 23:52:01,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:52:01,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 23:52:01,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 23:52:01,425 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 99 [2023-11-28 23:52:01,425 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 93 transitions, 237 flow. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:01,425 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:52:01,426 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 99 [2023-11-28 23:52:01,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:52:01,586 INFO L124 PetriNetUnfolderBase]: 298/753 cut-off events. [2023-11-28 23:52:01,587 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2023-11-28 23:52:01,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1267 conditions, 753 events. 298/753 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 4502 event pairs, 184 based on Foata normal form. 2/598 useless extension candidates. Maximal degree in co-relation 1258. Up to 475 conditions per place. [2023-11-28 23:52:01,593 INFO L140 encePairwiseOnDemand]: 96/99 looper letters, 48 selfloop transitions, 1 changer transitions 0/91 dead transitions. [2023-11-28 23:52:01,593 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 91 transitions, 331 flow [2023-11-28 23:52:01,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 23:52:01,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-28 23:52:01,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 195 transitions. [2023-11-28 23:52:01,595 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6565656565656566 [2023-11-28 23:52:01,595 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 195 transitions. [2023-11-28 23:52:01,595 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 195 transitions. [2023-11-28 23:52:01,595 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:52:01,595 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 195 transitions. [2023-11-28 23:52:01,596 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 65.0) internal successors, (195), 3 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:01,598 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:01,598 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:01,598 INFO L175 Difference]: Start difference. First operand has 87 places, 93 transitions, 237 flow. Second operand 3 states and 195 transitions. [2023-11-28 23:52:01,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 91 transitions, 331 flow [2023-11-28 23:52:01,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 91 transitions, 325 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-28 23:52:01,602 INFO L231 Difference]: Finished difference. Result has 86 places, 91 transitions, 229 flow [2023-11-28 23:52:01,602 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=227, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=229, PETRI_PLACES=86, PETRI_TRANSITIONS=91} [2023-11-28 23:52:01,603 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, -7 predicate places. [2023-11-28 23:52:01,603 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 91 transitions, 229 flow [2023-11-28 23:52:01,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:01,603 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:52:01,604 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-28 23:52:01,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-28 23:52:01,604 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-28 23:52:01,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:52:01,605 INFO L85 PathProgramCache]: Analyzing trace with hash 801839153, now seen corresponding path program 1 times [2023-11-28 23:52:01,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:52:01,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277741087] [2023-11-28 23:52:01,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:52:01,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:52:01,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:52:01,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:52:01,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:52:01,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277741087] [2023-11-28 23:52:01,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277741087] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:52:01,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:52:01,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-28 23:52:01,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095060371] [2023-11-28 23:52:01,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:52:01,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 23:52:01,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:52:01,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 23:52:01,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 23:52:01,658 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 99 [2023-11-28 23:52:01,659 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 91 transitions, 229 flow. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:01,659 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:52:01,659 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 99 [2023-11-28 23:52:01,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:52:01,808 INFO L124 PetriNetUnfolderBase]: 298/751 cut-off events. [2023-11-28 23:52:01,808 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2023-11-28 23:52:01,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1260 conditions, 751 events. 298/751 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 4490 event pairs, 184 based on Foata normal form. 1/596 useless extension candidates. Maximal degree in co-relation 1250. Up to 473 conditions per place. [2023-11-28 23:52:01,812 INFO L140 encePairwiseOnDemand]: 96/99 looper letters, 46 selfloop transitions, 1 changer transitions 0/89 dead transitions. [2023-11-28 23:52:01,812 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 89 transitions, 319 flow [2023-11-28 23:52:01,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 23:52:01,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-28 23:52:01,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 193 transitions. [2023-11-28 23:52:01,813 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6498316498316499 [2023-11-28 23:52:01,814 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 193 transitions. [2023-11-28 23:52:01,814 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 193 transitions. [2023-11-28 23:52:01,814 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:52:01,815 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 193 transitions. [2023-11-28 23:52:01,815 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:01,816 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:01,817 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:01,817 INFO L175 Difference]: Start difference. First operand has 86 places, 91 transitions, 229 flow. Second operand 3 states and 193 transitions. [2023-11-28 23:52:01,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 89 transitions, 319 flow [2023-11-28 23:52:01,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 89 transitions, 318 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-28 23:52:01,820 INFO L231 Difference]: Finished difference. Result has 85 places, 89 transitions, 226 flow [2023-11-28 23:52:01,820 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=226, PETRI_PLACES=85, PETRI_TRANSITIONS=89} [2023-11-28 23:52:01,822 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, -8 predicate places. [2023-11-28 23:52:01,822 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 89 transitions, 226 flow [2023-11-28 23:52:01,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:01,822 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:52:01,823 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-11-28 23:52:01,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-28 23:52:01,823 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-28 23:52:01,824 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:52:01,824 INFO L85 PathProgramCache]: Analyzing trace with hash 1767991904, now seen corresponding path program 1 times [2023-11-28 23:52:01,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:52:01,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234667565] [2023-11-28 23:52:01,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:52:01,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:52:01,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:52:01,909 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:52:01,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:52:01,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234667565] [2023-11-28 23:52:01,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234667565] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:52:01,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2047216135] [2023-11-28 23:52:01,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:52:01,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:52:01,911 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26396cbe-f567-4919-8f72-969e62029743/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:52:01,912 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26396cbe-f567-4919-8f72-969e62029743/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:52:01,916 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26396cbe-f567-4919-8f72-969e62029743/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-28 23:52:02,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:52:02,014 INFO L262 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-28 23:52:02,017 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:52:02,073 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:52:02,073 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:52:02,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2047216135] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:52:02,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-28 23:52:02,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2023-11-28 23:52:02,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814900338] [2023-11-28 23:52:02,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:52:02,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-28 23:52:02,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:52:02,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-28 23:52:02,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-28 23:52:02,089 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 99 [2023-11-28 23:52:02,090 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 89 transitions, 226 flow. Second operand has 6 states, 6 states have (on average 51.0) internal successors, (306), 6 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:02,090 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:52:02,090 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 99 [2023-11-28 23:52:02,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:52:02,293 INFO L124 PetriNetUnfolderBase]: 298/749 cut-off events. [2023-11-28 23:52:02,293 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2023-11-28 23:52:02,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1259 conditions, 749 events. 298/749 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 4467 event pairs, 184 based on Foata normal form. 2/593 useless extension candidates. Maximal degree in co-relation 1248. Up to 464 conditions per place. [2023-11-28 23:52:02,299 INFO L140 encePairwiseOnDemand]: 89/99 looper letters, 35 selfloop transitions, 14 changer transitions 0/87 dead transitions. [2023-11-28 23:52:02,299 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 87 transitions, 316 flow [2023-11-28 23:52:02,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-28 23:52:02,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-28 23:52:02,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 351 transitions. [2023-11-28 23:52:02,301 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5909090909090909 [2023-11-28 23:52:02,301 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 351 transitions. [2023-11-28 23:52:02,301 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 351 transitions. [2023-11-28 23:52:02,301 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:52:02,301 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 351 transitions. [2023-11-28 23:52:02,302 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 58.5) internal successors, (351), 6 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) [2023-11-28 23:52:02,304 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 99.0) internal successors, (693), 7 states have internal predecessors, (693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:02,304 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 99.0) internal successors, (693), 7 states have internal predecessors, (693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:02,305 INFO L175 Difference]: Start difference. First operand has 85 places, 89 transitions, 226 flow. Second operand 6 states and 351 transitions. [2023-11-28 23:52:02,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 87 transitions, 316 flow [2023-11-28 23:52:02,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 87 transitions, 315 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-28 23:52:02,307 INFO L231 Difference]: Finished difference. Result has 87 places, 87 transitions, 245 flow [2023-11-28 23:52:02,307 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=217, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=245, PETRI_PLACES=87, PETRI_TRANSITIONS=87} [2023-11-28 23:52:02,308 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, -6 predicate places. [2023-11-28 23:52:02,308 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 87 transitions, 245 flow [2023-11-28 23:52:02,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 51.0) internal successors, (306), 6 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:02,309 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:52:02,309 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-11-28 23:52:02,317 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26396cbe-f567-4919-8f72-969e62029743/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-28 23:52:02,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26396cbe-f567-4919-8f72-969e62029743/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:52:02,510 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-28 23:52:02,510 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:52:02,510 INFO L85 PathProgramCache]: Analyzing trace with hash -1026824793, now seen corresponding path program 1 times [2023-11-28 23:52:02,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:52:02,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750047177] [2023-11-28 23:52:02,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:52:02,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:52:02,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:52:02,584 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:52:02,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:52:02,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750047177] [2023-11-28 23:52:02,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750047177] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:52:02,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [957339843] [2023-11-28 23:52:02,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:52:02,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:52:02,585 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26396cbe-f567-4919-8f72-969e62029743/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:52:02,586 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26396cbe-f567-4919-8f72-969e62029743/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:52:02,592 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26396cbe-f567-4919-8f72-969e62029743/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-28 23:52:02,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:52:02,686 INFO L262 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-28 23:52:02,687 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:52:02,711 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:52:02,711 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:52:02,752 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:52:02,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [957339843] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:52:02,752 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 23:52:02,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-11-28 23:52:02,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171430764] [2023-11-28 23:52:02,753 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 23:52:02,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-28 23:52:02,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:52:02,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-28 23:52:02,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-11-28 23:52:02,782 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 99 [2023-11-28 23:52:02,783 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 87 transitions, 245 flow. Second operand has 12 states, 12 states have (on average 51.166666666666664) internal successors, (614), 12 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:02,783 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:52:02,783 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 99 [2023-11-28 23:52:02,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:52:03,052 INFO L124 PetriNetUnfolderBase]: 304/773 cut-off events. [2023-11-28 23:52:03,052 INFO L125 PetriNetUnfolderBase]: For 49/49 co-relation queries the response was YES. [2023-11-28 23:52:03,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1351 conditions, 773 events. 304/773 cut-off events. For 49/49 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 4580 event pairs, 184 based on Foata normal form. 6/617 useless extension candidates. Maximal degree in co-relation 1340. Up to 478 conditions per place. [2023-11-28 23:52:03,057 INFO L140 encePairwiseOnDemand]: 89/99 looper letters, 41 selfloop transitions, 26 changer transitions 0/105 dead transitions. [2023-11-28 23:52:03,057 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 105 transitions, 487 flow [2023-11-28 23:52:03,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-28 23:52:03,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-28 23:52:03,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 573 transitions. [2023-11-28 23:52:03,060 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5787878787878787 [2023-11-28 23:52:03,060 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 573 transitions. [2023-11-28 23:52:03,060 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 573 transitions. [2023-11-28 23:52:03,060 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:52:03,060 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 573 transitions. [2023-11-28 23:52:03,062 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 57.3) internal successors, (573), 10 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:03,063 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 99.0) internal successors, (1089), 11 states have internal predecessors, (1089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:03,064 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 99.0) internal successors, (1089), 11 states have internal predecessors, (1089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:03,064 INFO L175 Difference]: Start difference. First operand has 87 places, 87 transitions, 245 flow. Second operand 10 states and 573 transitions. [2023-11-28 23:52:03,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 105 transitions, 487 flow [2023-11-28 23:52:03,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 105 transitions, 427 flow, removed 16 selfloop flow, removed 4 redundant places. [2023-11-28 23:52:03,068 INFO L231 Difference]: Finished difference. Result has 95 places, 105 transitions, 381 flow [2023-11-28 23:52:03,068 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=215, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=381, PETRI_PLACES=95, PETRI_TRANSITIONS=105} [2023-11-28 23:52:03,069 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, 2 predicate places. [2023-11-28 23:52:03,069 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 105 transitions, 381 flow [2023-11-28 23:52:03,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 51.166666666666664) internal successors, (614), 12 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:03,069 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:52:03,069 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:52:03,074 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26396cbe-f567-4919-8f72-969e62029743/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-28 23:52:03,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26396cbe-f567-4919-8f72-969e62029743/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-28 23:52:03,270 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-28 23:52:03,270 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:52:03,270 INFO L85 PathProgramCache]: Analyzing trace with hash 2071642211, now seen corresponding path program 1 times [2023-11-28 23:52:03,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:52:03,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762898331] [2023-11-28 23:52:03,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:52:03,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:52:03,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:52:03,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:52:03,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:52:03,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762898331] [2023-11-28 23:52:03,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762898331] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:52:03,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:52:03,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 23:52:03,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860026268] [2023-11-28 23:52:03,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:52:03,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 23:52:03,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:52:03,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 23:52:03,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-28 23:52:03,338 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 99 [2023-11-28 23:52:03,338 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 105 transitions, 381 flow. Second operand has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:03,339 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:52:03,339 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 99 [2023-11-28 23:52:03,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:52:03,511 INFO L124 PetriNetUnfolderBase]: 306/781 cut-off events. [2023-11-28 23:52:03,511 INFO L125 PetriNetUnfolderBase]: For 73/73 co-relation queries the response was YES. [2023-11-28 23:52:03,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1379 conditions, 781 events. 306/781 cut-off events. For 73/73 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 4656 event pairs, 184 based on Foata normal form. 2/625 useless extension candidates. Maximal degree in co-relation 1366. Up to 498 conditions per place. [2023-11-28 23:52:03,516 INFO L140 encePairwiseOnDemand]: 87/99 looper letters, 67 selfloop transitions, 8 changer transitions 0/111 dead transitions. [2023-11-28 23:52:03,516 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 111 transitions, 543 flow [2023-11-28 23:52:03,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-28 23:52:03,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-28 23:52:03,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 255 transitions. [2023-11-28 23:52:03,518 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6439393939393939 [2023-11-28 23:52:03,518 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 255 transitions. [2023-11-28 23:52:03,518 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 255 transitions. [2023-11-28 23:52:03,518 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:52:03,518 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 255 transitions. [2023-11-28 23:52:03,519 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 63.75) internal successors, (255), 4 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:03,520 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 99.0) internal successors, (495), 5 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:03,520 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 99.0) internal successors, (495), 5 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:03,520 INFO L175 Difference]: Start difference. First operand has 95 places, 105 transitions, 381 flow. Second operand 4 states and 255 transitions. [2023-11-28 23:52:03,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 111 transitions, 543 flow [2023-11-28 23:52:03,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 111 transitions, 521 flow, removed 6 selfloop flow, removed 2 redundant places. [2023-11-28 23:52:03,525 INFO L231 Difference]: Finished difference. Result has 98 places, 111 transitions, 417 flow [2023-11-28 23:52:03,525 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=359, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=417, PETRI_PLACES=98, PETRI_TRANSITIONS=111} [2023-11-28 23:52:03,525 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, 5 predicate places. [2023-11-28 23:52:03,526 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 111 transitions, 417 flow [2023-11-28 23:52:03,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:03,526 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:52:03,526 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:52:03,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-28 23:52:03,526 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-28 23:52:03,527 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:52:03,527 INFO L85 PathProgramCache]: Analyzing trace with hash 1909049025, now seen corresponding path program 1 times [2023-11-28 23:52:03,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:52:03,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493054956] [2023-11-28 23:52:03,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:52:03,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:52:03,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:52:03,594 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-28 23:52:03,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:52:03,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493054956] [2023-11-28 23:52:03,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493054956] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:52:03,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:52:03,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 23:52:03,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268151844] [2023-11-28 23:52:03,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:52:03,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 23:52:03,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:52:03,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 23:52:03,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-28 23:52:03,607 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 99 [2023-11-28 23:52:03,607 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 111 transitions, 417 flow. Second operand has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:03,607 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:52:03,607 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 99 [2023-11-28 23:52:03,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:52:03,801 INFO L124 PetriNetUnfolderBase]: 305/780 cut-off events. [2023-11-28 23:52:03,801 INFO L125 PetriNetUnfolderBase]: For 61/61 co-relation queries the response was YES. [2023-11-28 23:52:03,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1389 conditions, 780 events. 305/780 cut-off events. For 61/61 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 4625 event pairs, 184 based on Foata normal form. 1/627 useless extension candidates. Maximal degree in co-relation 1373. Up to 494 conditions per place. [2023-11-28 23:52:03,808 INFO L140 encePairwiseOnDemand]: 95/99 looper letters, 67 selfloop transitions, 3 changer transitions 0/110 dead transitions. [2023-11-28 23:52:03,808 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 110 transitions, 553 flow [2023-11-28 23:52:03,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-28 23:52:03,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-28 23:52:03,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 244 transitions. [2023-11-28 23:52:03,810 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6161616161616161 [2023-11-28 23:52:03,810 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 244 transitions. [2023-11-28 23:52:03,810 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 244 transitions. [2023-11-28 23:52:03,810 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:52:03,810 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 244 transitions. [2023-11-28 23:52:03,811 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 61.0) internal successors, (244), 4 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:03,812 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 99.0) internal successors, (495), 5 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:03,812 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 99.0) internal successors, (495), 5 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:03,813 INFO L175 Difference]: Start difference. First operand has 98 places, 111 transitions, 417 flow. Second operand 4 states and 244 transitions. [2023-11-28 23:52:03,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 110 transitions, 553 flow [2023-11-28 23:52:03,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 110 transitions, 547 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-28 23:52:03,817 INFO L231 Difference]: Finished difference. Result has 100 places, 110 transitions, 413 flow [2023-11-28 23:52:03,817 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=407, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=413, PETRI_PLACES=100, PETRI_TRANSITIONS=110} [2023-11-28 23:52:03,818 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, 7 predicate places. [2023-11-28 23:52:03,818 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 110 transitions, 413 flow [2023-11-28 23:52:03,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:03,818 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:52:03,818 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:52:03,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-28 23:52:03,819 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-28 23:52:03,819 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:52:03,819 INFO L85 PathProgramCache]: Analyzing trace with hash -1702784635, now seen corresponding path program 1 times [2023-11-28 23:52:03,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:52:03,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455892117] [2023-11-28 23:52:03,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:52:03,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:52:03,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:52:03,906 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-28 23:52:03,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:52:03,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455892117] [2023-11-28 23:52:03,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455892117] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:52:03,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:52:03,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 23:52:03,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401525677] [2023-11-28 23:52:03,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:52:03,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 23:52:03,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:52:03,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 23:52:03,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-28 23:52:03,919 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 99 [2023-11-28 23:52:03,920 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 110 transitions, 413 flow. Second operand has 4 states, 4 states have (on average 52.5) internal successors, (210), 4 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:03,920 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:52:03,920 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 99 [2023-11-28 23:52:03,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:52:04,095 INFO L124 PetriNetUnfolderBase]: 304/779 cut-off events. [2023-11-28 23:52:04,096 INFO L125 PetriNetUnfolderBase]: For 61/61 co-relation queries the response was YES. [2023-11-28 23:52:04,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1385 conditions, 779 events. 304/779 cut-off events. For 61/61 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 4572 event pairs, 184 based on Foata normal form. 1/626 useless extension candidates. Maximal degree in co-relation 1368. Up to 493 conditions per place. [2023-11-28 23:52:04,102 INFO L140 encePairwiseOnDemand]: 95/99 looper letters, 66 selfloop transitions, 3 changer transitions 0/109 dead transitions. [2023-11-28 23:52:04,102 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 109 transitions, 547 flow [2023-11-28 23:52:04,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-28 23:52:04,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-28 23:52:04,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 244 transitions. [2023-11-28 23:52:04,104 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6161616161616161 [2023-11-28 23:52:04,104 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 244 transitions. [2023-11-28 23:52:04,104 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 244 transitions. [2023-11-28 23:52:04,104 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:52:04,104 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 244 transitions. [2023-11-28 23:52:04,105 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 61.0) internal successors, (244), 4 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:04,106 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 99.0) internal successors, (495), 5 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:04,106 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 99.0) internal successors, (495), 5 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:04,106 INFO L175 Difference]: Start difference. First operand has 100 places, 110 transitions, 413 flow. Second operand 4 states and 244 transitions. [2023-11-28 23:52:04,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 109 transitions, 547 flow [2023-11-28 23:52:04,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 109 transitions, 543 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-28 23:52:04,110 INFO L231 Difference]: Finished difference. Result has 101 places, 109 transitions, 411 flow [2023-11-28 23:52:04,111 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=405, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=411, PETRI_PLACES=101, PETRI_TRANSITIONS=109} [2023-11-28 23:52:04,111 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, 8 predicate places. [2023-11-28 23:52:04,111 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 109 transitions, 411 flow [2023-11-28 23:52:04,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 52.5) internal successors, (210), 4 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:04,112 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:52:04,112 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1, 1] [2023-11-28 23:52:04,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-28 23:52:04,112 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-28 23:52:04,112 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:52:04,112 INFO L85 PathProgramCache]: Analyzing trace with hash -1291933213, now seen corresponding path program 2 times [2023-11-28 23:52:04,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:52:04,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964424440] [2023-11-28 23:52:04,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:52:04,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:52:04,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:52:04,269 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:52:04,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:52:04,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964424440] [2023-11-28 23:52:04,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964424440] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:52:04,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1492264534] [2023-11-28 23:52:04,270 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-28 23:52:04,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:52:04,270 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26396cbe-f567-4919-8f72-969e62029743/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:52:04,271 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26396cbe-f567-4919-8f72-969e62029743/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:52:04,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26396cbe-f567-4919-8f72-969e62029743/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-28 23:52:04,367 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-28 23:52:04,367 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-28 23:52:04,369 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-28 23:52:04,370 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:52:04,428 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-28 23:52:04,428 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:52:04,475 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-28 23:52:04,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1492264534] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:52:04,475 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 23:52:04,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 3, 3] total 13 [2023-11-28 23:52:04,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513456385] [2023-11-28 23:52:04,476 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 23:52:04,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-28 23:52:04,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:52:04,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-28 23:52:04,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2023-11-28 23:52:04,505 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 99 [2023-11-28 23:52:04,506 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 109 transitions, 411 flow. Second operand has 14 states, 14 states have (on average 51.214285714285715) internal successors, (717), 14 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:04,506 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:52:04,506 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 99 [2023-11-28 23:52:04,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:52:04,906 INFO L124 PetriNetUnfolderBase]: 306/785 cut-off events. [2023-11-28 23:52:04,906 INFO L125 PetriNetUnfolderBase]: For 103/103 co-relation queries the response was YES. [2023-11-28 23:52:04,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1402 conditions, 785 events. 306/785 cut-off events. For 103/103 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 4604 event pairs, 184 based on Foata normal form. 4/633 useless extension candidates. Maximal degree in co-relation 1385. Up to 476 conditions per place. [2023-11-28 23:52:04,911 INFO L140 encePairwiseOnDemand]: 89/99 looper letters, 39 selfloop transitions, 36 changer transitions 0/113 dead transitions. [2023-11-28 23:52:04,911 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 113 transitions, 579 flow [2023-11-28 23:52:04,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-28 23:52:04,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-28 23:52:04,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 773 transitions. [2023-11-28 23:52:04,915 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5577200577200577 [2023-11-28 23:52:04,915 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 773 transitions. [2023-11-28 23:52:04,915 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 773 transitions. [2023-11-28 23:52:04,916 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:52:04,916 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 773 transitions. [2023-11-28 23:52:04,917 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 55.214285714285715) internal successors, (773), 14 states have internal predecessors, (773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:04,920 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 99.0) internal successors, (1485), 15 states have internal predecessors, (1485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:04,920 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 99.0) internal successors, (1485), 15 states have internal predecessors, (1485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:04,920 INFO L175 Difference]: Start difference. First operand has 101 places, 109 transitions, 411 flow. Second operand 14 states and 773 transitions. [2023-11-28 23:52:04,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 113 transitions, 579 flow [2023-11-28 23:52:04,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 113 transitions, 551 flow, removed 4 selfloop flow, removed 6 redundant places. [2023-11-28 23:52:04,923 INFO L231 Difference]: Finished difference. Result has 106 places, 113 transitions, 473 flow [2023-11-28 23:52:04,923 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=367, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=473, PETRI_PLACES=106, PETRI_TRANSITIONS=113} [2023-11-28 23:52:04,924 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, 13 predicate places. [2023-11-28 23:52:04,924 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 113 transitions, 473 flow [2023-11-28 23:52:04,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 51.214285714285715) internal successors, (717), 14 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:04,924 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:52:04,924 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:52:04,929 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26396cbe-f567-4919-8f72-969e62029743/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-28 23:52:05,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26396cbe-f567-4919-8f72-969e62029743/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-28 23:52:05,125 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-28 23:52:05,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:52:05,126 INFO L85 PathProgramCache]: Analyzing trace with hash -93957993, now seen corresponding path program 1 times [2023-11-28 23:52:05,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:52:05,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58843485] [2023-11-28 23:52:05,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:52:05,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:52:05,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:52:05,212 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-28 23:52:05,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:52:05,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58843485] [2023-11-28 23:52:05,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58843485] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:52:05,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1484212092] [2023-11-28 23:52:05,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:52:05,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:52:05,213 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26396cbe-f567-4919-8f72-969e62029743/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:52:05,217 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26396cbe-f567-4919-8f72-969e62029743/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:52:05,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26396cbe-f567-4919-8f72-969e62029743/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-28 23:52:05,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:52:05,331 INFO L262 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-28 23:52:05,332 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:52:05,355 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-28 23:52:05,356 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:52:05,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1484212092] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:52:05,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-28 23:52:05,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2023-11-28 23:52:05,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54943489] [2023-11-28 23:52:05,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:52:05,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-28 23:52:05,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:52:05,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-28 23:52:05,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-28 23:52:05,372 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 99 [2023-11-28 23:52:05,373 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 113 transitions, 473 flow. Second operand has 6 states, 6 states have (on average 52.333333333333336) internal successors, (314), 6 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:05,373 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:52:05,373 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 99 [2023-11-28 23:52:05,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:52:05,587 INFO L124 PetriNetUnfolderBase]: 306/783 cut-off events. [2023-11-28 23:52:05,587 INFO L125 PetriNetUnfolderBase]: For 89/89 co-relation queries the response was YES. [2023-11-28 23:52:05,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1418 conditions, 783 events. 306/783 cut-off events. For 89/89 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 4603 event pairs, 184 based on Foata normal form. 2/621 useless extension candidates. Maximal degree in co-relation 1406. Up to 492 conditions per place. [2023-11-28 23:52:05,603 INFO L140 encePairwiseOnDemand]: 89/99 looper letters, 63 selfloop transitions, 14 changer transitions 0/111 dead transitions. [2023-11-28 23:52:05,603 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 111 transitions, 619 flow [2023-11-28 23:52:05,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-28 23:52:05,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-28 23:52:05,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 351 transitions. [2023-11-28 23:52:05,605 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5909090909090909 [2023-11-28 23:52:05,605 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 351 transitions. [2023-11-28 23:52:05,605 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 351 transitions. [2023-11-28 23:52:05,606 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:52:05,606 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 351 transitions. [2023-11-28 23:52:05,607 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 58.5) internal successors, (351), 6 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) [2023-11-28 23:52:05,608 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 99.0) internal successors, (693), 7 states have internal predecessors, (693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:05,608 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 99.0) internal successors, (693), 7 states have internal predecessors, (693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:05,608 INFO L175 Difference]: Start difference. First operand has 106 places, 113 transitions, 473 flow. Second operand 6 states and 351 transitions. [2023-11-28 23:52:05,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 111 transitions, 619 flow [2023-11-28 23:52:05,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 111 transitions, 483 flow, removed 12 selfloop flow, removed 12 redundant places. [2023-11-28 23:52:05,612 INFO L231 Difference]: Finished difference. Result has 97 places, 111 transitions, 357 flow [2023-11-28 23:52:05,612 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=329, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=357, PETRI_PLACES=97, PETRI_TRANSITIONS=111} [2023-11-28 23:52:05,613 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, 4 predicate places. [2023-11-28 23:52:05,613 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 111 transitions, 357 flow [2023-11-28 23:52:05,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 52.333333333333336) internal successors, (314), 6 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:05,613 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:52:05,613 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:52:05,619 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26396cbe-f567-4919-8f72-969e62029743/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-28 23:52:05,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26396cbe-f567-4919-8f72-969e62029743/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-28 23:52:05,816 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-28 23:52:05,816 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:52:05,816 INFO L85 PathProgramCache]: Analyzing trace with hash 1382270535, now seen corresponding path program 1 times [2023-11-28 23:52:05,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:52:05,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586436957] [2023-11-28 23:52:05,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:52:05,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:52:05,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:52:05,888 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-28 23:52:05,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:52:05,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586436957] [2023-11-28 23:52:05,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586436957] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:52:05,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [608396358] [2023-11-28 23:52:05,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:52:05,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:52:05,889 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26396cbe-f567-4919-8f72-969e62029743/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:52:05,890 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26396cbe-f567-4919-8f72-969e62029743/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:52:05,893 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26396cbe-f567-4919-8f72-969e62029743/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-28 23:52:06,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:52:06,005 INFO L262 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-28 23:52:06,007 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:52:06,036 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-28 23:52:06,036 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:52:06,073 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-28 23:52:06,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [608396358] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:52:06,073 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 23:52:06,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-11-28 23:52:06,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055490352] [2023-11-28 23:52:06,074 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 23:52:06,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-28 23:52:06,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:52:06,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-28 23:52:06,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-11-28 23:52:06,103 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 99 [2023-11-28 23:52:06,104 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 111 transitions, 357 flow. Second operand has 12 states, 12 states have (on average 51.833333333333336) internal successors, (622), 12 states have internal predecessors, (622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:06,104 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:52:06,104 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 99 [2023-11-28 23:52:06,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:52:06,355 INFO L124 PetriNetUnfolderBase]: 312/807 cut-off events. [2023-11-28 23:52:06,355 INFO L125 PetriNetUnfolderBase]: For 65/65 co-relation queries the response was YES. [2023-11-28 23:52:06,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1441 conditions, 807 events. 312/807 cut-off events. For 65/65 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 4806 event pairs, 184 based on Foata normal form. 6/645 useless extension candidates. Maximal degree in co-relation 1430. Up to 506 conditions per place. [2023-11-28 23:52:06,360 INFO L140 encePairwiseOnDemand]: 89/99 looper letters, 69 selfloop transitions, 26 changer transitions 0/129 dead transitions. [2023-11-28 23:52:06,360 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 129 transitions, 655 flow [2023-11-28 23:52:06,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-28 23:52:06,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-28 23:52:06,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 573 transitions. [2023-11-28 23:52:06,363 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5787878787878787 [2023-11-28 23:52:06,363 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 573 transitions. [2023-11-28 23:52:06,363 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 573 transitions. [2023-11-28 23:52:06,364 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:52:06,364 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 573 transitions. [2023-11-28 23:52:06,366 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 57.3) internal successors, (573), 10 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:06,368 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 99.0) internal successors, (1089), 11 states have internal predecessors, (1089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:06,369 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 99.0) internal successors, (1089), 11 states have internal predecessors, (1089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:06,369 INFO L175 Difference]: Start difference. First operand has 97 places, 111 transitions, 357 flow. Second operand 10 states and 573 transitions. [2023-11-28 23:52:06,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 129 transitions, 655 flow [2023-11-28 23:52:06,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 129 transitions, 595 flow, removed 16 selfloop flow, removed 4 redundant places. [2023-11-28 23:52:06,373 INFO L231 Difference]: Finished difference. Result has 105 places, 129 transitions, 493 flow [2023-11-28 23:52:06,374 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=327, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=493, PETRI_PLACES=105, PETRI_TRANSITIONS=129} [2023-11-28 23:52:06,374 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, 12 predicate places. [2023-11-28 23:52:06,374 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 129 transitions, 493 flow [2023-11-28 23:52:06,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 51.833333333333336) internal successors, (622), 12 states have internal predecessors, (622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:06,375 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:52:06,375 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:52:06,380 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26396cbe-f567-4919-8f72-969e62029743/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-28 23:52:06,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26396cbe-f567-4919-8f72-969e62029743/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-28 23:52:06,576 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-28 23:52:06,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:52:06,577 INFO L85 PathProgramCache]: Analyzing trace with hash 332964421, now seen corresponding path program 1 times [2023-11-28 23:52:06,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:52:06,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007592248] [2023-11-28 23:52:06,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:52:06,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:52:06,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:52:06,667 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-28 23:52:06,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:52:06,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007592248] [2023-11-28 23:52:06,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007592248] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:52:06,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:52:06,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 23:52:06,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122495695] [2023-11-28 23:52:06,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:52:06,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 23:52:06,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:52:06,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 23:52:06,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-28 23:52:06,685 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 99 [2023-11-28 23:52:06,686 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 129 transitions, 493 flow. Second operand has 4 states, 4 states have (on average 52.5) internal successors, (210), 4 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:06,686 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:52:06,686 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 99 [2023-11-28 23:52:06,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:52:06,954 INFO L124 PetriNetUnfolderBase]: 571/1312 cut-off events. [2023-11-28 23:52:06,954 INFO L125 PetriNetUnfolderBase]: For 89/89 co-relation queries the response was YES. [2023-11-28 23:52:06,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2369 conditions, 1312 events. 571/1312 cut-off events. For 89/89 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 8472 event pairs, 169 based on Foata normal form. 40/1095 useless extension candidates. Maximal degree in co-relation 2356. Up to 489 conditions per place. [2023-11-28 23:52:06,961 INFO L140 encePairwiseOnDemand]: 91/99 looper letters, 121 selfloop transitions, 5 changer transitions 0/156 dead transitions. [2023-11-28 23:52:06,961 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 156 transitions, 801 flow [2023-11-28 23:52:06,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-28 23:52:06,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-28 23:52:06,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 269 transitions. [2023-11-28 23:52:06,963 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6792929292929293 [2023-11-28 23:52:06,963 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 269 transitions. [2023-11-28 23:52:06,963 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 269 transitions. [2023-11-28 23:52:06,963 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:52:06,963 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 269 transitions. [2023-11-28 23:52:06,964 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 67.25) internal successors, (269), 4 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:06,965 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 99.0) internal successors, (495), 5 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:06,965 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 99.0) internal successors, (495), 5 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:06,965 INFO L175 Difference]: Start difference. First operand has 105 places, 129 transitions, 493 flow. Second operand 4 states and 269 transitions. [2023-11-28 23:52:06,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 156 transitions, 801 flow [2023-11-28 23:52:06,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 156 transitions, 779 flow, removed 6 selfloop flow, removed 2 redundant places. [2023-11-28 23:52:06,969 INFO L231 Difference]: Finished difference. Result has 108 places, 131 transitions, 505 flow [2023-11-28 23:52:06,969 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=469, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=505, PETRI_PLACES=108, PETRI_TRANSITIONS=131} [2023-11-28 23:52:06,969 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, 15 predicate places. [2023-11-28 23:52:06,970 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 131 transitions, 505 flow [2023-11-28 23:52:06,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 52.5) internal successors, (210), 4 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:06,970 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:52:06,970 INFO L208 CegarLoopForPetriNet]: trace histogram [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] [2023-11-28 23:52:06,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-28 23:52:06,970 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-28 23:52:06,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:52:06,970 INFO L85 PathProgramCache]: Analyzing trace with hash 1731963578, now seen corresponding path program 1 times [2023-11-28 23:52:06,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:52:06,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194984234] [2023-11-28 23:52:06,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:52:06,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:52:06,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:52:07,069 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-28 23:52:07,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:52:07,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194984234] [2023-11-28 23:52:07,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194984234] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:52:07,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:52:07,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 23:52:07,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618945510] [2023-11-28 23:52:07,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:52:07,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 23:52:07,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:52:07,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 23:52:07,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-28 23:52:07,083 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 99 [2023-11-28 23:52:07,083 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 131 transitions, 505 flow. Second operand has 4 states, 4 states have (on average 54.0) internal successors, (216), 4 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:07,083 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:52:07,083 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 99 [2023-11-28 23:52:07,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:52:07,280 INFO L124 PetriNetUnfolderBase]: 381/1026 cut-off events. [2023-11-28 23:52:07,281 INFO L125 PetriNetUnfolderBase]: For 269/293 co-relation queries the response was YES. [2023-11-28 23:52:07,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1952 conditions, 1026 events. 381/1026 cut-off events. For 269/293 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 6690 event pairs, 236 based on Foata normal form. 14/856 useless extension candidates. Maximal degree in co-relation 1936. Up to 626 conditions per place. [2023-11-28 23:52:07,289 INFO L140 encePairwiseOnDemand]: 95/99 looper letters, 91 selfloop transitions, 3 changer transitions 0/130 dead transitions. [2023-11-28 23:52:07,290 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 130 transitions, 689 flow [2023-11-28 23:52:07,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-28 23:52:07,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-28 23:52:07,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 244 transitions. [2023-11-28 23:52:07,291 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6161616161616161 [2023-11-28 23:52:07,291 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 244 transitions. [2023-11-28 23:52:07,292 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 244 transitions. [2023-11-28 23:52:07,292 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:52:07,292 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 244 transitions. [2023-11-28 23:52:07,293 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 61.0) internal successors, (244), 4 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:07,294 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 99.0) internal successors, (495), 5 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:07,294 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 99.0) internal successors, (495), 5 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:07,294 INFO L175 Difference]: Start difference. First operand has 108 places, 131 transitions, 505 flow. Second operand 4 states and 244 transitions. [2023-11-28 23:52:07,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 130 transitions, 689 flow [2023-11-28 23:52:07,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 130 transitions, 689 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-28 23:52:07,300 INFO L231 Difference]: Finished difference. Result has 111 places, 130 transitions, 507 flow [2023-11-28 23:52:07,300 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=501, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=507, PETRI_PLACES=111, PETRI_TRANSITIONS=130} [2023-11-28 23:52:07,301 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, 18 predicate places. [2023-11-28 23:52:07,301 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 130 transitions, 507 flow [2023-11-28 23:52:07,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 54.0) internal successors, (216), 4 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:07,301 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:52:07,301 INFO L208 CegarLoopForPetriNet]: trace histogram [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, 1] [2023-11-28 23:52:07,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-28 23:52:07,302 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-28 23:52:07,302 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:52:07,302 INFO L85 PathProgramCache]: Analyzing trace with hash -1182819580, now seen corresponding path program 1 times [2023-11-28 23:52:07,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:52:07,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920807526] [2023-11-28 23:52:07,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:52:07,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:52:07,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:52:07,411 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-28 23:52:07,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:52:07,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920807526] [2023-11-28 23:52:07,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920807526] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:52:07,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:52:07,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 23:52:07,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563866389] [2023-11-28 23:52:07,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:52:07,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 23:52:07,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:52:07,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 23:52:07,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-28 23:52:07,425 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 99 [2023-11-28 23:52:07,425 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 130 transitions, 507 flow. Second operand has 4 states, 4 states have (on average 54.5) internal successors, (218), 4 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:07,425 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:52:07,425 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 99 [2023-11-28 23:52:07,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:52:07,629 INFO L124 PetriNetUnfolderBase]: 380/1025 cut-off events. [2023-11-28 23:52:07,629 INFO L125 PetriNetUnfolderBase]: For 273/297 co-relation queries the response was YES. [2023-11-28 23:52:07,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1953 conditions, 1025 events. 380/1025 cut-off events. For 273/297 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 6614 event pairs, 236 based on Foata normal form. 14/855 useless extension candidates. Maximal degree in co-relation 1935. Up to 625 conditions per place. [2023-11-28 23:52:07,638 INFO L140 encePairwiseOnDemand]: 95/99 looper letters, 90 selfloop transitions, 3 changer transitions 0/129 dead transitions. [2023-11-28 23:52:07,638 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 129 transitions, 689 flow [2023-11-28 23:52:07,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-28 23:52:07,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-28 23:52:07,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 244 transitions. [2023-11-28 23:52:07,640 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6161616161616161 [2023-11-28 23:52:07,640 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 244 transitions. [2023-11-28 23:52:07,640 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 244 transitions. [2023-11-28 23:52:07,641 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:52:07,641 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 244 transitions. [2023-11-28 23:52:07,641 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 61.0) internal successors, (244), 4 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:07,643 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 99.0) internal successors, (495), 5 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:07,643 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 99.0) internal successors, (495), 5 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:07,643 INFO L175 Difference]: Start difference. First operand has 111 places, 130 transitions, 507 flow. Second operand 4 states and 244 transitions. [2023-11-28 23:52:07,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 129 transitions, 689 flow [2023-11-28 23:52:07,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 129 transitions, 685 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-28 23:52:07,648 INFO L231 Difference]: Finished difference. Result has 112 places, 129 transitions, 505 flow [2023-11-28 23:52:07,649 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=499, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=505, PETRI_PLACES=112, PETRI_TRANSITIONS=129} [2023-11-28 23:52:07,649 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, 19 predicate places. [2023-11-28 23:52:07,649 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 129 transitions, 505 flow [2023-11-28 23:52:07,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 54.5) internal successors, (218), 4 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:07,649 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:52:07,650 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:52:07,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-28 23:52:07,650 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-28 23:52:07,650 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:52:07,650 INFO L85 PathProgramCache]: Analyzing trace with hash -558870575, now seen corresponding path program 2 times [2023-11-28 23:52:07,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:52:07,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638921676] [2023-11-28 23:52:07,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:52:07,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:52:07,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:52:07,856 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-28 23:52:07,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:52:07,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638921676] [2023-11-28 23:52:07,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638921676] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:52:07,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [761119524] [2023-11-28 23:52:07,857 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-28 23:52:07,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:52:07,857 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26396cbe-f567-4919-8f72-969e62029743/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:52:07,858 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26396cbe-f567-4919-8f72-969e62029743/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:52:07,864 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26396cbe-f567-4919-8f72-969e62029743/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-28 23:52:07,980 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-28 23:52:07,981 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-28 23:52:07,982 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-28 23:52:07,984 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:52:08,056 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-28 23:52:08,057 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:52:08,110 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-28 23:52:08,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [761119524] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:52:08,111 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 23:52:08,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 4, 4] total 12 [2023-11-28 23:52:08,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515492181] [2023-11-28 23:52:08,111 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 23:52:08,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-28 23:52:08,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:52:08,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-28 23:52:08,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2023-11-28 23:52:08,219 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 99 [2023-11-28 23:52:08,220 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 129 transitions, 505 flow. Second operand has 12 states, 12 states have (on average 44.416666666666664) internal successors, (533), 12 states have internal predecessors, (533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:08,220 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:52:08,220 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 99 [2023-11-28 23:52:08,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:52:08,729 INFO L124 PetriNetUnfolderBase]: 750/2005 cut-off events. [2023-11-28 23:52:08,729 INFO L125 PetriNetUnfolderBase]: For 533/582 co-relation queries the response was YES. [2023-11-28 23:52:08,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3764 conditions, 2005 events. 750/2005 cut-off events. For 533/582 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 15345 event pairs, 472 based on Foata normal form. 31/1682 useless extension candidates. Maximal degree in co-relation 3746. Up to 600 conditions per place. [2023-11-28 23:52:08,742 INFO L140 encePairwiseOnDemand]: 81/99 looper letters, 89 selfloop transitions, 67 changer transitions 0/190 dead transitions. [2023-11-28 23:52:08,743 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 190 transitions, 1055 flow [2023-11-28 23:52:08,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-28 23:52:08,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-28 23:52:08,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 717 transitions. [2023-11-28 23:52:08,746 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48282828282828283 [2023-11-28 23:52:08,746 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 717 transitions. [2023-11-28 23:52:08,746 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 717 transitions. [2023-11-28 23:52:08,747 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:52:08,747 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 717 transitions. [2023-11-28 23:52:08,749 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 47.8) internal successors, (717), 15 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:08,752 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 99.0) internal successors, (1584), 16 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:08,753 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 99.0) internal successors, (1584), 16 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:08,753 INFO L175 Difference]: Start difference. First operand has 112 places, 129 transitions, 505 flow. Second operand 15 states and 717 transitions. [2023-11-28 23:52:08,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 190 transitions, 1055 flow [2023-11-28 23:52:08,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 190 transitions, 1017 flow, removed 3 selfloop flow, removed 6 redundant places. [2023-11-28 23:52:08,758 INFO L231 Difference]: Finished difference. Result has 120 places, 158 transitions, 803 flow [2023-11-28 23:52:08,759 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=461, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=803, PETRI_PLACES=120, PETRI_TRANSITIONS=158} [2023-11-28 23:52:08,759 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, 27 predicate places. [2023-11-28 23:52:08,759 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 158 transitions, 803 flow [2023-11-28 23:52:08,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 44.416666666666664) internal successors, (533), 12 states have internal predecessors, (533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:08,759 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:52:08,760 INFO L208 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1] [2023-11-28 23:52:08,764 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26396cbe-f567-4919-8f72-969e62029743/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-28 23:52:08,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26396cbe-f567-4919-8f72-969e62029743/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-28 23:52:08,960 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-28 23:52:08,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:52:08,961 INFO L85 PathProgramCache]: Analyzing trace with hash -1681370484, now seen corresponding path program 1 times [2023-11-28 23:52:08,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:52:08,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997327901] [2023-11-28 23:52:08,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:52:08,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:52:09,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:52:09,604 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-28 23:52:09,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:52:09,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997327901] [2023-11-28 23:52:09,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997327901] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:52:09,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [706971565] [2023-11-28 23:52:09,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:52:09,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:52:09,605 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26396cbe-f567-4919-8f72-969e62029743/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:52:09,607 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26396cbe-f567-4919-8f72-969e62029743/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:52:09,609 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26396cbe-f567-4919-8f72-969e62029743/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-28 23:52:09,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:52:09,766 INFO L262 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-28 23:52:09,769 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:52:09,842 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2023-11-28 23:52:10,196 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-11-28 23:52:10,196 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2023-11-28 23:52:10,203 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-28 23:52:10,203 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:52:10,325 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2023-11-28 23:52:10,330 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2023-11-28 23:52:10,369 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-28 23:52:10,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [706971565] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:52:10,370 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 23:52:10,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 15 [2023-11-28 23:52:10,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209467867] [2023-11-28 23:52:10,370 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 23:52:10,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-28 23:52:10,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:52:10,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-28 23:52:10,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2023-11-28 23:52:10,718 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 99 [2023-11-28 23:52:10,719 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 158 transitions, 803 flow. Second operand has 17 states, 17 states have (on average 46.05882352941177) internal successors, (783), 17 states have internal predecessors, (783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:10,719 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:52:10,720 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 99 [2023-11-28 23:52:10,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:52:12,426 INFO L124 PetriNetUnfolderBase]: 2780/6941 cut-off events. [2023-11-28 23:52:12,426 INFO L125 PetriNetUnfolderBase]: For 1913/1957 co-relation queries the response was YES. [2023-11-28 23:52:12,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13464 conditions, 6941 events. 2780/6941 cut-off events. For 1913/1957 co-relation queries the response was YES. Maximal size of possible extension queue 437. Compared 64650 event pairs, 778 based on Foata normal form. 44/5995 useless extension candidates. Maximal degree in co-relation 13448. Up to 922 conditions per place. [2023-11-28 23:52:12,466 INFO L140 encePairwiseOnDemand]: 86/99 looper letters, 291 selfloop transitions, 52 changer transitions 0/375 dead transitions. [2023-11-28 23:52:12,466 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 375 transitions, 2530 flow [2023-11-28 23:52:12,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-28 23:52:12,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-28 23:52:12,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 830 transitions. [2023-11-28 23:52:12,469 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5589225589225589 [2023-11-28 23:52:12,469 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 830 transitions. [2023-11-28 23:52:12,469 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 830 transitions. [2023-11-28 23:52:12,470 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:52:12,470 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 830 transitions. [2023-11-28 23:52:12,472 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 55.333333333333336) internal successors, (830), 15 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) [2023-11-28 23:52:12,475 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 99.0) internal successors, (1584), 16 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:12,475 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 99.0) internal successors, (1584), 16 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:12,475 INFO L175 Difference]: Start difference. First operand has 120 places, 158 transitions, 803 flow. Second operand 15 states and 830 transitions. [2023-11-28 23:52:12,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 375 transitions, 2530 flow [2023-11-28 23:52:12,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 375 transitions, 2527 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-28 23:52:12,493 INFO L231 Difference]: Finished difference. Result has 135 places, 171 transitions, 1018 flow [2023-11-28 23:52:12,494 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=800, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1018, PETRI_PLACES=135, PETRI_TRANSITIONS=171} [2023-11-28 23:52:12,494 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, 42 predicate places. [2023-11-28 23:52:12,494 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 171 transitions, 1018 flow [2023-11-28 23:52:12,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 46.05882352941177) internal successors, (783), 17 states have internal predecessors, (783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:12,494 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:52:12,494 INFO L208 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1] [2023-11-28 23:52:12,499 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26396cbe-f567-4919-8f72-969e62029743/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-28 23:52:12,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26396cbe-f567-4919-8f72-969e62029743/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-28 23:52:12,695 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-28 23:52:12,695 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:52:12,695 INFO L85 PathProgramCache]: Analyzing trace with hash -582908105, now seen corresponding path program 1 times [2023-11-28 23:52:12,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:52:12,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364107775] [2023-11-28 23:52:12,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:52:12,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:52:12,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:52:13,228 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-28 23:52:13,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:52:13,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364107775] [2023-11-28 23:52:13,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364107775] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:52:13,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1259847682] [2023-11-28 23:52:13,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:52:13,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:52:13,229 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26396cbe-f567-4919-8f72-969e62029743/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:52:13,230 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26396cbe-f567-4919-8f72-969e62029743/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:52:13,236 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26396cbe-f567-4919-8f72-969e62029743/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-28 23:52:13,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:52:13,380 INFO L262 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-28 23:52:13,383 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:52:13,422 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2023-11-28 23:52:13,716 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-11-28 23:52:13,716 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 12 [2023-11-28 23:52:13,732 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-28 23:52:13,732 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:52:13,850 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2023-11-28 23:52:13,854 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 20 [2023-11-28 23:52:13,907 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-28 23:52:13,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1259847682] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:52:13,907 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 23:52:13,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 15 [2023-11-28 23:52:13,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730126600] [2023-11-28 23:52:13,908 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 23:52:13,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-28 23:52:13,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:52:13,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-28 23:52:13,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2023-11-28 23:52:14,192 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 99 [2023-11-28 23:52:14,193 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 171 transitions, 1018 flow. Second operand has 17 states, 17 states have (on average 44.1764705882353) internal successors, (751), 17 states have internal predecessors, (751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:14,193 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:52:14,193 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 99 [2023-11-28 23:52:14,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:52:15,740 INFO L124 PetriNetUnfolderBase]: 3312/7493 cut-off events. [2023-11-28 23:52:15,741 INFO L125 PetriNetUnfolderBase]: For 4211/4255 co-relation queries the response was YES. [2023-11-28 23:52:15,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16077 conditions, 7493 events. 3312/7493 cut-off events. For 4211/4255 co-relation queries the response was YES. Maximal size of possible extension queue 447. Compared 66269 event pairs, 960 based on Foata normal form. 124/6627 useless extension candidates. Maximal degree in co-relation 16057. Up to 1212 conditions per place. [2023-11-28 23:52:15,777 INFO L140 encePairwiseOnDemand]: 86/99 looper letters, 296 selfloop transitions, 52 changer transitions 0/377 dead transitions. [2023-11-28 23:52:15,777 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 377 transitions, 2706 flow [2023-11-28 23:52:15,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-28 23:52:15,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-28 23:52:15,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 799 transitions. [2023-11-28 23:52:15,781 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.538047138047138 [2023-11-28 23:52:15,781 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 799 transitions. [2023-11-28 23:52:15,781 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 799 transitions. [2023-11-28 23:52:15,782 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:52:15,782 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 799 transitions. [2023-11-28 23:52:15,785 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 53.266666666666666) internal successors, (799), 15 states have internal predecessors, (799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:15,788 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 99.0) internal successors, (1584), 16 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:15,789 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 99.0) internal successors, (1584), 16 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:15,789 INFO L175 Difference]: Start difference. First operand has 135 places, 171 transitions, 1018 flow. Second operand 15 states and 799 transitions. [2023-11-28 23:52:15,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 377 transitions, 2706 flow [2023-11-28 23:52:15,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 377 transitions, 2687 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-11-28 23:52:15,812 INFO L231 Difference]: Finished difference. Result has 146 places, 174 transitions, 1150 flow [2023-11-28 23:52:15,812 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=986, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1150, PETRI_PLACES=146, PETRI_TRANSITIONS=174} [2023-11-28 23:52:15,812 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, 53 predicate places. [2023-11-28 23:52:15,813 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 174 transitions, 1150 flow [2023-11-28 23:52:15,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 44.1764705882353) internal successors, (751), 17 states have internal predecessors, (751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:15,813 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:52:15,813 INFO L208 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1] [2023-11-28 23:52:15,818 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26396cbe-f567-4919-8f72-969e62029743/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-28 23:52:16,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26396cbe-f567-4919-8f72-969e62029743/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:52:16,014 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-28 23:52:16,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:52:16,014 INFO L85 PathProgramCache]: Analyzing trace with hash 1921906050, now seen corresponding path program 1 times [2023-11-28 23:52:16,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:52:16,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939301084] [2023-11-28 23:52:16,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:52:16,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:52:16,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:52:16,098 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-28 23:52:16,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:52:16,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939301084] [2023-11-28 23:52:16,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939301084] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:52:16,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:52:16,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 23:52:16,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215707624] [2023-11-28 23:52:16,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:52:16,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 23:52:16,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:52:16,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 23:52:16,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-28 23:52:16,116 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 99 [2023-11-28 23:52:16,117 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 174 transitions, 1150 flow. Second operand has 4 states, 4 states have (on average 54.0) internal successors, (216), 4 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:16,117 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:52:16,117 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 99 [2023-11-28 23:52:16,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:52:17,152 INFO L124 PetriNetUnfolderBase]: 4520/10265 cut-off events. [2023-11-28 23:52:17,153 INFO L125 PetriNetUnfolderBase]: For 8807/8965 co-relation queries the response was YES. [2023-11-28 23:52:17,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22969 conditions, 10265 events. 4520/10265 cut-off events. For 8807/8965 co-relation queries the response was YES. Maximal size of possible extension queue 608. Compared 96918 event pairs, 1550 based on Foata normal form. 438/9139 useless extension candidates. Maximal degree in co-relation 22947. Up to 3809 conditions per place. [2023-11-28 23:52:17,253 INFO L140 encePairwiseOnDemand]: 91/99 looper letters, 189 selfloop transitions, 5 changer transitions 0/227 dead transitions. [2023-11-28 23:52:17,253 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 227 transitions, 1850 flow [2023-11-28 23:52:17,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-28 23:52:17,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-28 23:52:17,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 269 transitions. [2023-11-28 23:52:17,254 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6792929292929293 [2023-11-28 23:52:17,254 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 269 transitions. [2023-11-28 23:52:17,254 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 269 transitions. [2023-11-28 23:52:17,254 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:52:17,254 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 269 transitions. [2023-11-28 23:52:17,255 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 67.25) internal successors, (269), 4 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:17,256 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 99.0) internal successors, (495), 5 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:17,256 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 99.0) internal successors, (495), 5 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:17,256 INFO L175 Difference]: Start difference. First operand has 146 places, 174 transitions, 1150 flow. Second operand 4 states and 269 transitions. [2023-11-28 23:52:17,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 227 transitions, 1850 flow [2023-11-28 23:52:17,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 227 transitions, 1757 flow, removed 2 selfloop flow, removed 10 redundant places. [2023-11-28 23:52:17,272 INFO L231 Difference]: Finished difference. Result has 141 places, 176 transitions, 1119 flow [2023-11-28 23:52:17,272 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=1083, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1119, PETRI_PLACES=141, PETRI_TRANSITIONS=176} [2023-11-28 23:52:17,273 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, 48 predicate places. [2023-11-28 23:52:17,273 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 176 transitions, 1119 flow [2023-11-28 23:52:17,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 54.0) internal successors, (216), 4 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:17,273 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:52:17,273 INFO L208 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1] [2023-11-28 23:52:17,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-28 23:52:17,273 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-28 23:52:17,274 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:52:17,274 INFO L85 PathProgramCache]: Analyzing trace with hash -890280945, now seen corresponding path program 1 times [2023-11-28 23:52:17,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:52:17,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491005708] [2023-11-28 23:52:17,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:52:17,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:52:17,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:52:17,345 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-28 23:52:17,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:52:17,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491005708] [2023-11-28 23:52:17,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491005708] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:52:17,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:52:17,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 23:52:17,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250455560] [2023-11-28 23:52:17,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:52:17,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 23:52:17,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:52:17,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 23:52:17,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-28 23:52:17,365 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 99 [2023-11-28 23:52:17,365 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 176 transitions, 1119 flow. Second operand has 4 states, 4 states have (on average 53.75) internal successors, (215), 4 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:17,365 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:52:17,366 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 99 [2023-11-28 23:52:17,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:52:18,467 INFO L124 PetriNetUnfolderBase]: 3980/9637 cut-off events. [2023-11-28 23:52:18,467 INFO L125 PetriNetUnfolderBase]: For 8558/8778 co-relation queries the response was YES. [2023-11-28 23:52:18,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22169 conditions, 9637 events. 3980/9637 cut-off events. For 8558/8778 co-relation queries the response was YES. Maximal size of possible extension queue 557. Compared 93375 event pairs, 1542 based on Foata normal form. 276/8919 useless extension candidates. Maximal degree in co-relation 22147. Up to 3637 conditions per place. [2023-11-28 23:52:18,513 INFO L140 encePairwiseOnDemand]: 94/99 looper letters, 162 selfloop transitions, 11 changer transitions 0/202 dead transitions. [2023-11-28 23:52:18,513 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 202 transitions, 1537 flow [2023-11-28 23:52:18,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-28 23:52:18,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-28 23:52:18,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 266 transitions. [2023-11-28 23:52:18,514 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6717171717171717 [2023-11-28 23:52:18,514 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 266 transitions. [2023-11-28 23:52:18,514 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 266 transitions. [2023-11-28 23:52:18,514 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:52:18,514 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 266 transitions. [2023-11-28 23:52:18,515 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 66.5) internal successors, (266), 4 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:18,516 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 99.0) internal successors, (495), 5 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:18,516 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 99.0) internal successors, (495), 5 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:18,516 INFO L175 Difference]: Start difference. First operand has 141 places, 176 transitions, 1119 flow. Second operand 4 states and 266 transitions. [2023-11-28 23:52:18,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 202 transitions, 1537 flow [2023-11-28 23:52:18,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 202 transitions, 1530 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-28 23:52:18,545 INFO L231 Difference]: Finished difference. Result has 143 places, 173 transitions, 1110 flow [2023-11-28 23:52:18,545 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=1088, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1110, PETRI_PLACES=143, PETRI_TRANSITIONS=173} [2023-11-28 23:52:18,546 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, 50 predicate places. [2023-11-28 23:52:18,546 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 173 transitions, 1110 flow [2023-11-28 23:52:18,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.75) internal successors, (215), 4 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:18,547 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:52:18,547 INFO L208 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1] [2023-11-28 23:52:18,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-28 23:52:18,548 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-28 23:52:18,548 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:52:18,548 INFO L85 PathProgramCache]: Analyzing trace with hash -890281970, now seen corresponding path program 1 times [2023-11-28 23:52:18,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:52:18,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329684887] [2023-11-28 23:52:18,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:52:18,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:52:18,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:52:19,065 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-28 23:52:19,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:52:19,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329684887] [2023-11-28 23:52:19,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329684887] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:52:19,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [430325842] [2023-11-28 23:52:19,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:52:19,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:52:19,066 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26396cbe-f567-4919-8f72-969e62029743/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:52:19,066 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26396cbe-f567-4919-8f72-969e62029743/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:52:19,078 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26396cbe-f567-4919-8f72-969e62029743/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-28 23:52:19,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:52:19,297 INFO L262 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 40 conjunts are in the unsatisfiable core [2023-11-28 23:52:19,300 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:52:19,314 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-28 23:52:19,335 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-28 23:52:19,448 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-28 23:52:19,448 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-11-28 23:52:19,459 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-28 23:52:19,582 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-11-28 23:52:19,627 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-28 23:52:19,627 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:52:19,692 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_503 (Array Int Int))) (< 0 (+ 2147483649 (select (select (store |c_#memory_int#4| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_503) c_~get_2~0.base) (+ (* c_~id_0~0 4) c_~get_2~0.offset))))) is different from false [2023-11-28 23:52:19,830 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 23:52:19,831 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 29 [2023-11-28 23:52:19,841 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 23:52:19,842 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 39 [2023-11-28 23:52:19,847 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 9 [2023-11-28 23:52:19,915 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 1 not checked. [2023-11-28 23:52:19,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [430325842] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:52:19,915 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 23:52:19,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2023-11-28 23:52:19,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224647567] [2023-11-28 23:52:19,916 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 23:52:19,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-28 23:52:19,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:52:19,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-28 23:52:19,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=318, Unknown=1, NotChecked=36, Total=420 [2023-11-28 23:52:19,918 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 99 [2023-11-28 23:52:19,919 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 173 transitions, 1110 flow. Second operand has 21 states, 21 states have (on average 33.80952380952381) internal successors, (710), 21 states have internal predecessors, (710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:19,919 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:52:19,919 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 99 [2023-11-28 23:52:19,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:52:24,451 INFO L124 PetriNetUnfolderBase]: 9105/17346 cut-off events. [2023-11-28 23:52:24,451 INFO L125 PetriNetUnfolderBase]: For 12335/13013 co-relation queries the response was YES. [2023-11-28 23:52:24,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43407 conditions, 17346 events. 9105/17346 cut-off events. For 12335/13013 co-relation queries the response was YES. Maximal size of possible extension queue 808. Compared 152165 event pairs, 1921 based on Foata normal form. 362/16665 useless extension candidates. Maximal degree in co-relation 43385. Up to 2693 conditions per place. [2023-11-28 23:52:24,552 INFO L140 encePairwiseOnDemand]: 82/99 looper letters, 531 selfloop transitions, 104 changer transitions 0/654 dead transitions. [2023-11-28 23:52:24,553 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 654 transitions, 4471 flow [2023-11-28 23:52:24,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-11-28 23:52:24,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2023-11-28 23:52:24,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 1557 transitions. [2023-11-28 23:52:24,556 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43686868686868685 [2023-11-28 23:52:24,557 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 1557 transitions. [2023-11-28 23:52:24,557 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 1557 transitions. [2023-11-28 23:52:24,557 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:52:24,557 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 1557 transitions. [2023-11-28 23:52:24,560 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 43.25) internal successors, (1557), 36 states have internal predecessors, (1557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:24,564 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 99.0) internal successors, (3663), 37 states have internal predecessors, (3663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:24,564 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 99.0) internal successors, (3663), 37 states have internal predecessors, (3663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:24,564 INFO L175 Difference]: Start difference. First operand has 143 places, 173 transitions, 1110 flow. Second operand 36 states and 1557 transitions. [2023-11-28 23:52:24,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 654 transitions, 4471 flow [2023-11-28 23:52:24,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 654 transitions, 4420 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-28 23:52:24,632 INFO L231 Difference]: Finished difference. Result has 187 places, 230 transitions, 1813 flow [2023-11-28 23:52:24,633 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=1094, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=1813, PETRI_PLACES=187, PETRI_TRANSITIONS=230} [2023-11-28 23:52:24,633 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, 94 predicate places. [2023-11-28 23:52:24,633 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 230 transitions, 1813 flow [2023-11-28 23:52:24,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 33.80952380952381) internal successors, (710), 21 states have internal predecessors, (710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:24,634 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:52:24,634 INFO L208 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1] [2023-11-28 23:52:24,638 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26396cbe-f567-4919-8f72-969e62029743/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-28 23:52:24,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26396cbe-f567-4919-8f72-969e62029743/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-11-28 23:52:24,834 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-28 23:52:24,835 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:52:24,835 INFO L85 PathProgramCache]: Analyzing trace with hash -550453453, now seen corresponding path program 1 times [2023-11-28 23:52:24,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:52:24,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259905766] [2023-11-28 23:52:24,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:52:24,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:52:24,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:52:25,562 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-28 23:52:25,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:52:25,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259905766] [2023-11-28 23:52:25,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259905766] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:52:25,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2135271877] [2023-11-28 23:52:25,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:52:25,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:52:25,563 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26396cbe-f567-4919-8f72-969e62029743/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:52:25,564 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26396cbe-f567-4919-8f72-969e62029743/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:52:25,569 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26396cbe-f567-4919-8f72-969e62029743/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-28 23:52:25,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:52:25,733 INFO L262 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 31 conjunts are in the unsatisfiable core [2023-11-28 23:52:25,737 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:52:25,754 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-28 23:52:25,773 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-28 23:52:25,894 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-28 23:52:25,894 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-11-28 23:52:25,930 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-28 23:52:26,047 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-28 23:52:26,062 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-28 23:52:26,063 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:52:26,272 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 23:52:26,273 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 27 [2023-11-28 23:52:26,281 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 23:52:26,282 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 33 [2023-11-28 23:52:26,287 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2023-11-28 23:52:26,348 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-28 23:52:26,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2135271877] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:52:26,349 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 23:52:26,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2023-11-28 23:52:26,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832673433] [2023-11-28 23:52:26,349 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 23:52:26,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-28 23:52:26,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:52:26,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-28 23:52:26,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=381, Unknown=4, NotChecked=0, Total=462 [2023-11-28 23:52:26,693 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 99 [2023-11-28 23:52:26,693 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 230 transitions, 1813 flow. Second operand has 22 states, 22 states have (on average 36.5) internal successors, (803), 22 states have internal predecessors, (803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:26,693 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:52:26,693 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 99 [2023-11-28 23:52:26,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:52:31,029 INFO L124 PetriNetUnfolderBase]: 10154/19340 cut-off events. [2023-11-28 23:52:31,029 INFO L125 PetriNetUnfolderBase]: For 36805/37321 co-relation queries the response was YES. [2023-11-28 23:52:31,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53462 conditions, 19340 events. 10154/19340 cut-off events. For 36805/37321 co-relation queries the response was YES. Maximal size of possible extension queue 862. Compared 170578 event pairs, 2277 based on Foata normal form. 173/18100 useless extension candidates. Maximal degree in co-relation 53428. Up to 3535 conditions per place. [2023-11-28 23:52:31,166 INFO L140 encePairwiseOnDemand]: 84/99 looper letters, 383 selfloop transitions, 71 changer transitions 0/482 dead transitions. [2023-11-28 23:52:31,166 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 482 transitions, 4177 flow [2023-11-28 23:52:31,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-28 23:52:31,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-11-28 23:52:31,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 964 transitions. [2023-11-28 23:52:31,169 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4426078971533517 [2023-11-28 23:52:31,169 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 964 transitions. [2023-11-28 23:52:31,169 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 964 transitions. [2023-11-28 23:52:31,170 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:52:31,170 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 964 transitions. [2023-11-28 23:52:31,172 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 43.81818181818182) internal successors, (964), 22 states have internal predecessors, (964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:31,174 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 99.0) internal successors, (2277), 23 states have internal predecessors, (2277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:31,175 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 99.0) internal successors, (2277), 23 states have internal predecessors, (2277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:31,175 INFO L175 Difference]: Start difference. First operand has 187 places, 230 transitions, 1813 flow. Second operand 22 states and 964 transitions. [2023-11-28 23:52:31,175 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 482 transitions, 4177 flow [2023-11-28 23:52:31,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 482 transitions, 4036 flow, removed 32 selfloop flow, removed 8 redundant places. [2023-11-28 23:52:31,274 INFO L231 Difference]: Finished difference. Result has 203 places, 243 transitions, 1961 flow [2023-11-28 23:52:31,274 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=1713, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1961, PETRI_PLACES=203, PETRI_TRANSITIONS=243} [2023-11-28 23:52:31,274 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, 110 predicate places. [2023-11-28 23:52:31,275 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 243 transitions, 1961 flow [2023-11-28 23:52:31,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 36.5) internal successors, (803), 22 states have internal predecessors, (803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:31,275 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:52:31,275 INFO L208 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:52:31,280 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26396cbe-f567-4919-8f72-969e62029743/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-28 23:52:31,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26396cbe-f567-4919-8f72-969e62029743/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-11-28 23:52:31,476 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-28 23:52:31,476 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:52:31,476 INFO L85 PathProgramCache]: Analyzing trace with hash -1828936166, now seen corresponding path program 1 times [2023-11-28 23:52:31,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:52:31,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115115754] [2023-11-28 23:52:31,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:52:31,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:52:31,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:52:31,966 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-28 23:52:31,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:52:31,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115115754] [2023-11-28 23:52:31,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115115754] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:52:31,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1124568167] [2023-11-28 23:52:31,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:52:31,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:52:31,967 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26396cbe-f567-4919-8f72-969e62029743/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:52:31,968 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26396cbe-f567-4919-8f72-969e62029743/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:52:31,969 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26396cbe-f567-4919-8f72-969e62029743/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-28 23:52:32,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:52:32,087 INFO L262 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 40 conjunts are in the unsatisfiable core [2023-11-28 23:52:32,089 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:52:32,100 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-28 23:52:32,115 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-28 23:52:32,220 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-28 23:52:32,220 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-11-28 23:52:32,236 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-28 23:52:32,317 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-28 23:52:32,361 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-28 23:52:32,361 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:52:32,559 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 23:52:32,560 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 27 [2023-11-28 23:52:32,567 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 23:52:32,567 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 33 [2023-11-28 23:52:32,572 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2023-11-28 23:52:32,625 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-28 23:52:32,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1124568167] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:52:32,625 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 23:52:32,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 20 [2023-11-28 23:52:32,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087122148] [2023-11-28 23:52:32,625 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 23:52:32,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-28 23:52:32,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:52:32,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-28 23:52:32,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=388, Unknown=3, NotChecked=0, Total=462 [2023-11-28 23:52:32,833 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 99 [2023-11-28 23:52:32,834 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 243 transitions, 1961 flow. Second operand has 22 states, 22 states have (on average 33.72727272727273) internal successors, (742), 22 states have internal predecessors, (742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:32,834 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:52:32,834 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 99 [2023-11-28 23:52:32,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:52:34,495 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (+ (* c_~id_0~0 4) c_~get_2~0.offset))) (and (forall ((|v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_134| Int)) (or (forall ((v_ArrVal_602 (Array Int Int))) (< (select (select (store |c_#memory_int#4| |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_134| v_ArrVal_602) c_~get_2~0.base) .cse0) 2147483648)) (not (= (select |c_#valid| |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_134|) 0)))) (<= 0 c_~id_0~0) (forall ((v_ArrVal_602 (Array Int Int))) (< (select (select (store |c_#memory_int#4| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_602) c_~get_2~0.base) .cse0) 2147483648)))) is different from false [2023-11-28 23:52:37,807 INFO L124 PetriNetUnfolderBase]: 10013/18751 cut-off events. [2023-11-28 23:52:37,807 INFO L125 PetriNetUnfolderBase]: For 27929/28851 co-relation queries the response was YES. [2023-11-28 23:52:37,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54390 conditions, 18751 events. 10013/18751 cut-off events. For 27929/28851 co-relation queries the response was YES. Maximal size of possible extension queue 881. Compared 163114 event pairs, 2652 based on Foata normal form. 947/18606 useless extension candidates. Maximal degree in co-relation 54354. Up to 3965 conditions per place. [2023-11-28 23:52:37,960 INFO L140 encePairwiseOnDemand]: 79/99 looper letters, 406 selfloop transitions, 112 changer transitions 18/561 dead transitions. [2023-11-28 23:52:37,960 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 561 transitions, 4491 flow [2023-11-28 23:52:37,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-11-28 23:52:37,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2023-11-28 23:52:38,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 1308 transitions. [2023-11-28 23:52:38,093 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.426197458455523 [2023-11-28 23:52:38,093 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 1308 transitions. [2023-11-28 23:52:38,093 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 1308 transitions. [2023-11-28 23:52:38,094 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:52:38,094 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 1308 transitions. [2023-11-28 23:52:38,098 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 42.193548387096776) internal successors, (1308), 31 states have internal predecessors, (1308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:38,104 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 99.0) internal successors, (3168), 32 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:38,105 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 99.0) internal successors, (3168), 32 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:38,105 INFO L175 Difference]: Start difference. First operand has 203 places, 243 transitions, 1961 flow. Second operand 31 states and 1308 transitions. [2023-11-28 23:52:38,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 561 transitions, 4491 flow [2023-11-28 23:52:38,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 561 transitions, 4396 flow, removed 10 selfloop flow, removed 13 redundant places. [2023-11-28 23:52:38,235 INFO L231 Difference]: Finished difference. Result has 226 places, 269 transitions, 2345 flow [2023-11-28 23:52:38,236 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=1882, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=2345, PETRI_PLACES=226, PETRI_TRANSITIONS=269} [2023-11-28 23:52:38,236 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, 133 predicate places. [2023-11-28 23:52:38,236 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 269 transitions, 2345 flow [2023-11-28 23:52:38,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 33.72727272727273) internal successors, (742), 22 states have internal predecessors, (742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:38,236 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:52:38,237 INFO L208 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:52:38,241 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26396cbe-f567-4919-8f72-969e62029743/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-28 23:52:38,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26396cbe-f567-4919-8f72-969e62029743/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-11-28 23:52:38,437 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-28 23:52:38,437 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:52:38,438 INFO L85 PathProgramCache]: Analyzing trace with hash 115781510, now seen corresponding path program 1 times [2023-11-28 23:52:38,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:52:38,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761416293] [2023-11-28 23:52:38,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:52:38,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:52:38,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:52:39,006 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-28 23:52:39,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:52:39,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761416293] [2023-11-28 23:52:39,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761416293] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:52:39,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [317619203] [2023-11-28 23:52:39,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:52:39,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:52:39,007 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26396cbe-f567-4919-8f72-969e62029743/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:52:39,008 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26396cbe-f567-4919-8f72-969e62029743/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:52:39,012 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26396cbe-f567-4919-8f72-969e62029743/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-28 23:52:39,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:52:39,191 INFO L262 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 32 conjunts are in the unsatisfiable core [2023-11-28 23:52:39,195 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:52:39,207 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-28 23:52:39,236 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-28 23:52:39,355 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-28 23:52:39,356 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-11-28 23:52:39,371 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-28 23:52:39,502 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-11-28 23:52:39,517 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-28 23:52:39,517 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:52:39,581 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_654 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int#4| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_654) c_~get_2~0.base) (+ (* c_~id_0~0 4) c_~get_2~0.offset)) 4294967296))) is different from false [2023-11-28 23:52:39,695 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 23:52:39,696 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 29 [2023-11-28 23:52:39,706 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 23:52:39,707 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 39 [2023-11-28 23:52:39,714 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 9 [2023-11-28 23:52:39,773 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 1 not checked. [2023-11-28 23:52:39,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [317619203] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:52:39,773 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 23:52:39,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2023-11-28 23:52:39,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829899048] [2023-11-28 23:52:39,774 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 23:52:39,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-28 23:52:39,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:52:39,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-28 23:52:39,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=251, Unknown=1, NotChecked=32, Total=342 [2023-11-28 23:52:39,852 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 99 [2023-11-28 23:52:39,853 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 269 transitions, 2345 flow. Second operand has 19 states, 19 states have (on average 36.10526315789474) internal successors, (686), 19 states have internal predecessors, (686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:39,853 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:52:39,853 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 99 [2023-11-28 23:52:39,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:52:42,091 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (+ (* c_~id_0~0 4) c_~get_2~0.offset))) (and (<= 0 c_~id_0~0) (< 0 (+ (select (select |c_#memory_int#4| c_~get_2~0.base) .cse0) 4294967296)) (forall ((|v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_137| Int)) (or (not (= (select |c_#valid| |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_137|) 0)) (forall ((v_ArrVal_654 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int#4| |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_137| v_ArrVal_654) c_~get_2~0.base) .cse0) 4294967296))))) (forall ((v_ArrVal_654 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int#4| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_654) c_~get_2~0.base) .cse0) 4294967296))))) is different from false [2023-11-28 23:52:45,419 INFO L124 PetriNetUnfolderBase]: 10157/19281 cut-off events. [2023-11-28 23:52:45,419 INFO L125 PetriNetUnfolderBase]: For 57646/59082 co-relation queries the response was YES. [2023-11-28 23:52:45,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61213 conditions, 19281 events. 10157/19281 cut-off events. For 57646/59082 co-relation queries the response was YES. Maximal size of possible extension queue 884. Compared 170154 event pairs, 2781 based on Foata normal form. 629/18660 useless extension candidates. Maximal degree in co-relation 61170. Up to 4101 conditions per place. [2023-11-28 23:52:45,592 INFO L140 encePairwiseOnDemand]: 84/99 looper letters, 390 selfloop transitions, 70 changer transitions 0/500 dead transitions. [2023-11-28 23:52:45,592 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 500 transitions, 4825 flow [2023-11-28 23:52:45,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-28 23:52:45,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-11-28 23:52:45,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 951 transitions. [2023-11-28 23:52:45,594 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4366391184573003 [2023-11-28 23:52:45,594 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 951 transitions. [2023-11-28 23:52:45,594 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 951 transitions. [2023-11-28 23:52:45,594 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:52:45,594 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 951 transitions. [2023-11-28 23:52:45,596 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 43.22727272727273) internal successors, (951), 22 states have internal predecessors, (951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:45,598 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 99.0) internal successors, (2277), 23 states have internal predecessors, (2277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:45,598 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 99.0) internal successors, (2277), 23 states have internal predecessors, (2277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:45,598 INFO L175 Difference]: Start difference. First operand has 226 places, 269 transitions, 2345 flow. Second operand 22 states and 951 transitions. [2023-11-28 23:52:45,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 500 transitions, 4825 flow [2023-11-28 23:52:45,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 500 transitions, 4646 flow, removed 14 selfloop flow, removed 15 redundant places. [2023-11-28 23:52:45,930 INFO L231 Difference]: Finished difference. Result has 233 places, 272 transitions, 2391 flow [2023-11-28 23:52:45,931 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=2199, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=2391, PETRI_PLACES=233, PETRI_TRANSITIONS=272} [2023-11-28 23:52:45,931 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, 140 predicate places. [2023-11-28 23:52:45,931 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 272 transitions, 2391 flow [2023-11-28 23:52:45,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 36.10526315789474) internal successors, (686), 19 states have internal predecessors, (686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:45,931 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:52:45,932 INFO L208 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:52:45,936 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26396cbe-f567-4919-8f72-969e62029743/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-28 23:52:46,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26396cbe-f567-4919-8f72-969e62029743/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-11-28 23:52:46,132 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-28 23:52:46,132 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:52:46,132 INFO L85 PathProgramCache]: Analyzing trace with hash 84871924, now seen corresponding path program 1 times [2023-11-28 23:52:46,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:52:46,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572546249] [2023-11-28 23:52:46,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:52:46,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:52:46,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:52:46,203 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-28 23:52:46,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:52:46,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572546249] [2023-11-28 23:52:46,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572546249] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:52:46,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:52:46,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-28 23:52:46,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43477205] [2023-11-28 23:52:46,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:52:46,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-28 23:52:46,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:52:46,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-28 23:52:46,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-28 23:52:46,227 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 99 [2023-11-28 23:52:46,228 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 272 transitions, 2391 flow. Second operand has 5 states, 5 states have (on average 51.0) internal successors, (255), 5 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:46,228 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:52:46,228 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 99 [2023-11-28 23:52:46,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:52:48,425 INFO L124 PetriNetUnfolderBase]: 7340/15318 cut-off events. [2023-11-28 23:52:48,425 INFO L125 PetriNetUnfolderBase]: For 36007/36315 co-relation queries the response was YES. [2023-11-28 23:52:48,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48068 conditions, 15318 events. 7340/15318 cut-off events. For 36007/36315 co-relation queries the response was YES. Maximal size of possible extension queue 768. Compared 141796 event pairs, 2889 based on Foata normal form. 388/14970 useless extension candidates. Maximal degree in co-relation 48023. Up to 6742 conditions per place. [2023-11-28 23:52:48,575 INFO L140 encePairwiseOnDemand]: 92/99 looper letters, 288 selfloop transitions, 37 changer transitions 10/369 dead transitions. [2023-11-28 23:52:48,575 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 369 transitions, 3627 flow [2023-11-28 23:52:48,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-28 23:52:48,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-28 23:52:48,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 377 transitions. [2023-11-28 23:52:48,577 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6346801346801347 [2023-11-28 23:52:48,577 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 377 transitions. [2023-11-28 23:52:48,577 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 377 transitions. [2023-11-28 23:52:48,577 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:52:48,577 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 377 transitions. [2023-11-28 23:52:48,578 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 62.833333333333336) internal successors, (377), 6 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:48,579 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 99.0) internal successors, (693), 7 states have internal predecessors, (693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:48,579 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 99.0) internal successors, (693), 7 states have internal predecessors, (693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:48,579 INFO L175 Difference]: Start difference. First operand has 233 places, 272 transitions, 2391 flow. Second operand 6 states and 377 transitions. [2023-11-28 23:52:48,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 369 transitions, 3627 flow [2023-11-28 23:52:48,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 369 transitions, 3396 flow, removed 12 selfloop flow, removed 20 redundant places. [2023-11-28 23:52:48,909 INFO L231 Difference]: Finished difference. Result has 218 places, 269 transitions, 2289 flow [2023-11-28 23:52:48,909 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=2144, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2289, PETRI_PLACES=218, PETRI_TRANSITIONS=269} [2023-11-28 23:52:48,909 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, 125 predicate places. [2023-11-28 23:52:48,909 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 269 transitions, 2289 flow [2023-11-28 23:52:48,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 51.0) internal successors, (255), 5 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:48,910 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:52:48,910 INFO L208 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:52:48,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-11-28 23:52:48,910 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-28 23:52:48,910 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:52:48,910 INFO L85 PathProgramCache]: Analyzing trace with hash -705740363, now seen corresponding path program 1 times [2023-11-28 23:52:48,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:52:48,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93235774] [2023-11-28 23:52:48,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:52:48,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:52:48,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:52:49,368 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-28 23:52:49,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:52:49,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93235774] [2023-11-28 23:52:49,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93235774] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:52:49,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1754125475] [2023-11-28 23:52:49,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:52:49,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:52:49,368 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26396cbe-f567-4919-8f72-969e62029743/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:52:49,369 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26396cbe-f567-4919-8f72-969e62029743/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:52:49,370 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26396cbe-f567-4919-8f72-969e62029743/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-28 23:52:49,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:52:49,509 INFO L262 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-28 23:52:49,511 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:52:49,546 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2023-11-28 23:52:49,791 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-11-28 23:52:49,792 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 12 [2023-11-28 23:52:49,834 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-28 23:52:49,834 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:52:49,929 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2023-11-28 23:52:49,931 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 20 [2023-11-28 23:52:49,958 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-28 23:52:49,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1754125475] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:52:49,958 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 23:52:49,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2023-11-28 23:52:49,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91013101] [2023-11-28 23:52:49,958 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 23:52:49,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-28 23:52:49,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:52:49,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-28 23:52:49,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2023-11-28 23:52:50,305 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 99 [2023-11-28 23:52:50,306 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 269 transitions, 2289 flow. Second operand has 19 states, 19 states have (on average 40.36842105263158) internal successors, (767), 19 states have internal predecessors, (767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:50,306 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:52:50,306 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 99 [2023-11-28 23:52:50,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:52:53,662 INFO L124 PetriNetUnfolderBase]: 8837/16973 cut-off events. [2023-11-28 23:52:53,662 INFO L125 PetriNetUnfolderBase]: For 56504/57300 co-relation queries the response was YES. [2023-11-28 23:52:53,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55373 conditions, 16973 events. 8837/16973 cut-off events. For 56504/57300 co-relation queries the response was YES. Maximal size of possible extension queue 771. Compared 148532 event pairs, 2171 based on Foata normal form. 430/16704 useless extension candidates. Maximal degree in co-relation 55329. Up to 2952 conditions per place. [2023-11-28 23:52:53,820 INFO L140 encePairwiseOnDemand]: 83/99 looper letters, 818 selfloop transitions, 86 changer transitions 10/953 dead transitions. [2023-11-28 23:52:53,820 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 953 transitions, 9250 flow [2023-11-28 23:52:53,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-28 23:52:53,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-11-28 23:52:53,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1113 transitions. [2023-11-28 23:52:53,822 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5110192837465565 [2023-11-28 23:52:53,822 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 1113 transitions. [2023-11-28 23:52:53,822 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 1113 transitions. [2023-11-28 23:52:53,823 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:52:53,823 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 1113 transitions. [2023-11-28 23:52:53,824 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 50.59090909090909) internal successors, (1113), 22 states have internal predecessors, (1113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:53,826 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 99.0) internal successors, (2277), 23 states have internal predecessors, (2277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:53,827 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 99.0) internal successors, (2277), 23 states have internal predecessors, (2277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:53,827 INFO L175 Difference]: Start difference. First operand has 218 places, 269 transitions, 2289 flow. Second operand 22 states and 1113 transitions. [2023-11-28 23:52:53,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 953 transitions, 9250 flow [2023-11-28 23:52:53,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 953 transitions, 8974 flow, removed 45 selfloop flow, removed 3 redundant places. [2023-11-28 23:52:53,994 INFO L231 Difference]: Finished difference. Result has 242 places, 293 transitions, 2661 flow [2023-11-28 23:52:53,995 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=2234, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=2661, PETRI_PLACES=242, PETRI_TRANSITIONS=293} [2023-11-28 23:52:53,995 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, 149 predicate places. [2023-11-28 23:52:53,995 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 293 transitions, 2661 flow [2023-11-28 23:52:53,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 40.36842105263158) internal successors, (767), 19 states have internal predecessors, (767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:53,995 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:52:53,995 INFO L208 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:52:54,000 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26396cbe-f567-4919-8f72-969e62029743/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-28 23:52:54,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26396cbe-f567-4919-8f72-969e62029743/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-11-28 23:52:54,196 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-28 23:52:54,196 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:52:54,196 INFO L85 PathProgramCache]: Analyzing trace with hash -403113623, now seen corresponding path program 1 times [2023-11-28 23:52:54,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:52:54,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297680481] [2023-11-28 23:52:54,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:52:54,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:52:54,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:52:54,790 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-28 23:52:54,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:52:54,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297680481] [2023-11-28 23:52:54,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297680481] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:52:54,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [437750817] [2023-11-28 23:52:54,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:52:54,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:52:54,790 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26396cbe-f567-4919-8f72-969e62029743/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:52:54,791 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26396cbe-f567-4919-8f72-969e62029743/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:52:54,796 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26396cbe-f567-4919-8f72-969e62029743/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-28 23:52:54,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:52:54,965 INFO L262 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-28 23:52:54,968 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:52:55,004 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2023-11-28 23:52:55,272 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-11-28 23:52:55,273 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2023-11-28 23:52:55,317 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-28 23:52:55,318 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:52:55,418 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2023-11-28 23:52:55,422 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2023-11-28 23:52:55,447 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-28 23:52:55,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [437750817] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:52:55,448 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 23:52:55,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2023-11-28 23:52:55,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907596276] [2023-11-28 23:52:55,448 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 23:52:55,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-28 23:52:55,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:52:55,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-28 23:52:55,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=316, Unknown=0, NotChecked=0, Total=380 [2023-11-28 23:52:55,736 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 99 [2023-11-28 23:52:55,736 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 293 transitions, 2661 flow. Second operand has 20 states, 20 states have (on average 41.2) internal successors, (824), 20 states have internal predecessors, (824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:55,736 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:52:55,736 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 99 [2023-11-28 23:52:55,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:52:59,346 INFO L124 PetriNetUnfolderBase]: 7791/15679 cut-off events. [2023-11-28 23:52:59,346 INFO L125 PetriNetUnfolderBase]: For 52599/53301 co-relation queries the response was YES. [2023-11-28 23:52:59,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53688 conditions, 15679 events. 7791/15679 cut-off events. For 52599/53301 co-relation queries the response was YES. Maximal size of possible extension queue 753. Compared 141433 event pairs, 2385 based on Foata normal form. 794/15890 useless extension candidates. Maximal degree in co-relation 53637. Up to 3352 conditions per place. [2023-11-28 23:52:59,465 INFO L140 encePairwiseOnDemand]: 81/99 looper letters, 719 selfloop transitions, 91 changer transitions 164/1018 dead transitions. [2023-11-28 23:52:59,465 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 1018 transitions, 9890 flow [2023-11-28 23:52:59,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-28 23:52:59,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-11-28 23:52:59,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 1221 transitions. [2023-11-28 23:52:59,467 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5138888888888888 [2023-11-28 23:52:59,468 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 1221 transitions. [2023-11-28 23:52:59,468 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 1221 transitions. [2023-11-28 23:52:59,468 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:52:59,468 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 1221 transitions. [2023-11-28 23:52:59,470 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 50.875) internal successors, (1221), 24 states have internal predecessors, (1221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:59,472 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 99.0) internal successors, (2475), 25 states have internal predecessors, (2475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:59,473 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 99.0) internal successors, (2475), 25 states have internal predecessors, (2475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:59,473 INFO L175 Difference]: Start difference. First operand has 242 places, 293 transitions, 2661 flow. Second operand 24 states and 1221 transitions. [2023-11-28 23:52:59,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 1018 transitions, 9890 flow [2023-11-28 23:52:59,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 1018 transitions, 9805 flow, removed 3 selfloop flow, removed 7 redundant places. [2023-11-28 23:52:59,761 INFO L231 Difference]: Finished difference. Result has 266 places, 313 transitions, 2968 flow [2023-11-28 23:52:59,761 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=2576, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=2968, PETRI_PLACES=266, PETRI_TRANSITIONS=313} [2023-11-28 23:52:59,761 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, 173 predicate places. [2023-11-28 23:52:59,761 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 313 transitions, 2968 flow [2023-11-28 23:52:59,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 41.2) internal successors, (824), 20 states have internal predecessors, (824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:52:59,762 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:52:59,762 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 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, 1] [2023-11-28 23:52:59,767 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26396cbe-f567-4919-8f72-969e62029743/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-11-28 23:52:59,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26396cbe-f567-4919-8f72-969e62029743/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-11-28 23:52:59,962 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-28 23:52:59,962 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:52:59,963 INFO L85 PathProgramCache]: Analyzing trace with hash -252489396, now seen corresponding path program 2 times [2023-11-28 23:52:59,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:52:59,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524269974] [2023-11-28 23:52:59,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:52:59,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:52:59,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:53:00,121 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-28 23:53:00,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:53:00,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524269974] [2023-11-28 23:53:00,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524269974] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:53:00,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [647199813] [2023-11-28 23:53:00,122 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-28 23:53:00,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:53:00,122 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26396cbe-f567-4919-8f72-969e62029743/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:53:00,123 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26396cbe-f567-4919-8f72-969e62029743/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:53:00,126 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26396cbe-f567-4919-8f72-969e62029743/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-28 23:53:00,476 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-28 23:53:00,477 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-28 23:53:00,478 INFO L262 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-28 23:53:00,480 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:53:00,582 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-28 23:53:00,582 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:53:00,697 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-28 23:53:00,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [647199813] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:53:00,698 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 23:53:00,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2023-11-28 23:53:00,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286489205] [2023-11-28 23:53:00,698 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 23:53:00,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-28 23:53:00,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:53:00,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-28 23:53:00,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2023-11-28 23:53:00,897 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 99 [2023-11-28 23:53:00,898 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 313 transitions, 2968 flow. Second operand has 20 states, 20 states have (on average 43.9) internal successors, (878), 20 states have internal predecessors, (878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:53:00,898 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:53:00,898 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 99 [2023-11-28 23:53:00,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:53:03,114 INFO L124 PetriNetUnfolderBase]: 4715/12017 cut-off events. [2023-11-28 23:53:03,114 INFO L125 PetriNetUnfolderBase]: For 42910/43223 co-relation queries the response was YES. [2023-11-28 23:53:03,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43460 conditions, 12017 events. 4715/12017 cut-off events. For 42910/43223 co-relation queries the response was YES. Maximal size of possible extension queue 528. Compared 120191 event pairs, 3573 based on Foata normal form. 135/11828 useless extension candidates. Maximal degree in co-relation 43401. Up to 5198 conditions per place. [2023-11-28 23:53:03,225 INFO L140 encePairwiseOnDemand]: 89/99 looper letters, 206 selfloop transitions, 113 changer transitions 0/387 dead transitions. [2023-11-28 23:53:03,225 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 387 transitions, 4100 flow [2023-11-28 23:53:03,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-28 23:53:03,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-28 23:53:03,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 628 transitions. [2023-11-28 23:53:03,227 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48795648795648794 [2023-11-28 23:53:03,227 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 628 transitions. [2023-11-28 23:53:03,227 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 628 transitions. [2023-11-28 23:53:03,227 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:53:03,227 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 628 transitions. [2023-11-28 23:53:03,228 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 48.30769230769231) internal successors, (628), 13 states have internal predecessors, (628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:53:03,230 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 99.0) internal successors, (1386), 14 states have internal predecessors, (1386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:53:03,230 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 99.0) internal successors, (1386), 14 states have internal predecessors, (1386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:53:03,230 INFO L175 Difference]: Start difference. First operand has 266 places, 313 transitions, 2968 flow. Second operand 13 states and 628 transitions. [2023-11-28 23:53:03,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 387 transitions, 4100 flow [2023-11-28 23:53:03,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 387 transitions, 4009 flow, removed 5 selfloop flow, removed 8 redundant places. [2023-11-28 23:53:03,607 INFO L231 Difference]: Finished difference. Result has 273 places, 347 transitions, 3455 flow [2023-11-28 23:53:03,608 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=2877, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3455, PETRI_PLACES=273, PETRI_TRANSITIONS=347} [2023-11-28 23:53:03,608 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, 180 predicate places. [2023-11-28 23:53:03,608 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 347 transitions, 3455 flow [2023-11-28 23:53:03,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 43.9) internal successors, (878), 20 states have internal predecessors, (878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:53:03,609 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:53:03,609 INFO L208 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:53:03,613 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26396cbe-f567-4919-8f72-969e62029743/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-11-28 23:53:03,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26396cbe-f567-4919-8f72-969e62029743/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-11-28 23:53:03,809 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-28 23:53:03,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:53:03,810 INFO L85 PathProgramCache]: Analyzing trace with hash 1335697819, now seen corresponding path program 1 times [2023-11-28 23:53:03,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:53:03,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785419048] [2023-11-28 23:53:03,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:53:03,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:53:03,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:53:03,881 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-28 23:53:03,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:53:03,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785419048] [2023-11-28 23:53:03,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785419048] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:53:03,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:53:03,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 23:53:03,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050413573] [2023-11-28 23:53:03,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:53:03,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 23:53:03,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:53:03,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 23:53:03,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-28 23:53:03,899 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 99 [2023-11-28 23:53:03,900 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 347 transitions, 3455 flow. Second operand has 4 states, 4 states have (on average 54.5) internal successors, (218), 4 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:53:03,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:53:03,900 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 99 [2023-11-28 23:53:03,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:53:06,333 INFO L124 PetriNetUnfolderBase]: 6457/13795 cut-off events. [2023-11-28 23:53:06,333 INFO L125 PetriNetUnfolderBase]: For 50854/51456 co-relation queries the response was YES. [2023-11-28 23:53:06,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49817 conditions, 13795 events. 6457/13795 cut-off events. For 50854/51456 co-relation queries the response was YES. Maximal size of possible extension queue 579. Compared 124762 event pairs, 2673 based on Foata normal form. 504/14064 useless extension candidates. Maximal degree in co-relation 49756. Up to 6038 conditions per place. [2023-11-28 23:53:06,464 INFO L140 encePairwiseOnDemand]: 94/99 looper letters, 325 selfloop transitions, 16 changer transitions 98/485 dead transitions. [2023-11-28 23:53:06,464 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 485 transitions, 5505 flow [2023-11-28 23:53:06,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-28 23:53:06,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-28 23:53:06,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 264 transitions. [2023-11-28 23:53:06,465 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2023-11-28 23:53:06,465 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 264 transitions. [2023-11-28 23:53:06,465 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 264 transitions. [2023-11-28 23:53:06,465 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:53:06,465 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 264 transitions. [2023-11-28 23:53:06,466 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 66.0) internal successors, (264), 4 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) [2023-11-28 23:53:06,466 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 99.0) internal successors, (495), 5 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:53:06,466 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 99.0) internal successors, (495), 5 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:53:06,466 INFO L175 Difference]: Start difference. First operand has 273 places, 347 transitions, 3455 flow. Second operand 4 states and 264 transitions. [2023-11-28 23:53:06,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 485 transitions, 5505 flow [2023-11-28 23:53:06,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 485 transitions, 5390 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-11-28 23:53:06,713 INFO L231 Difference]: Finished difference. Result has 266 places, 287 transitions, 2811 flow [2023-11-28 23:53:06,714 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=3226, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=335, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=319, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2811, PETRI_PLACES=266, PETRI_TRANSITIONS=287} [2023-11-28 23:53:06,714 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, 173 predicate places. [2023-11-28 23:53:06,714 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 287 transitions, 2811 flow [2023-11-28 23:53:06,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 54.5) internal successors, (218), 4 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:53:06,714 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:53:06,715 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 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, 1, 1, 1] [2023-11-28 23:53:06,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-11-28 23:53:06,715 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-28 23:53:06,715 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:53:06,715 INFO L85 PathProgramCache]: Analyzing trace with hash -1840966002, now seen corresponding path program 2 times [2023-11-28 23:53:06,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:53:06,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012897822] [2023-11-28 23:53:06,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:53:06,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:53:06,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:53:06,876 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-28 23:53:06,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:53:06,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012897822] [2023-11-28 23:53:06,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012897822] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:53:06,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1600862783] [2023-11-28 23:53:06,877 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-28 23:53:06,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:53:06,877 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26396cbe-f567-4919-8f72-969e62029743/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:53:06,878 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26396cbe-f567-4919-8f72-969e62029743/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:53:06,884 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26396cbe-f567-4919-8f72-969e62029743/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-28 23:53:07,142 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-28 23:53:07,142 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-28 23:53:07,144 INFO L262 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-28 23:53:07,145 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:53:07,305 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-28 23:53:07,305 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:53:07,665 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-28 23:53:07,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1600862783] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:53:07,666 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 23:53:07,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 11] total 25 [2023-11-28 23:53:07,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390743446] [2023-11-28 23:53:07,666 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 23:53:07,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-11-28 23:53:07,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:53:07,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-11-28 23:53:07,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=501, Unknown=0, NotChecked=0, Total=600 [2023-11-28 23:53:07,895 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 99 [2023-11-28 23:53:07,895 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 287 transitions, 2811 flow. Second operand has 25 states, 25 states have (on average 44.0) internal successors, (1100), 25 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:53:07,895 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:53:07,896 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 99 [2023-11-28 23:53:07,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:53:09,738 INFO L124 PetriNetUnfolderBase]: 3067/7631 cut-off events. [2023-11-28 23:53:09,738 INFO L125 PetriNetUnfolderBase]: For 29031/29461 co-relation queries the response was YES. [2023-11-28 23:53:09,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28574 conditions, 7631 events. 3067/7631 cut-off events. For 29031/29461 co-relation queries the response was YES. Maximal size of possible extension queue 344. Compared 68283 event pairs, 2235 based on Foata normal form. 167/7722 useless extension candidates. Maximal degree in co-relation 28513. Up to 2827 conditions per place. [2023-11-28 23:53:09,812 INFO L140 encePairwiseOnDemand]: 89/99 looper letters, 205 selfloop transitions, 89 changer transitions 24/373 dead transitions. [2023-11-28 23:53:09,812 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 373 transitions, 4090 flow [2023-11-28 23:53:09,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-28 23:53:09,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-11-28 23:53:09,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 971 transitions. [2023-11-28 23:53:09,815 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4904040404040404 [2023-11-28 23:53:09,815 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 971 transitions. [2023-11-28 23:53:09,815 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 971 transitions. [2023-11-28 23:53:09,816 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:53:09,816 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 971 transitions. [2023-11-28 23:53:09,818 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 48.55) internal successors, (971), 20 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:53:09,820 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 99.0) internal successors, (2079), 21 states have internal predecessors, (2079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:53:09,820 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 99.0) internal successors, (2079), 21 states have internal predecessors, (2079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:53:09,821 INFO L175 Difference]: Start difference. First operand has 266 places, 287 transitions, 2811 flow. Second operand 20 states and 971 transitions. [2023-11-28 23:53:09,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 373 transitions, 4090 flow [2023-11-28 23:53:09,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 373 transitions, 4044 flow, removed 9 selfloop flow, removed 5 redundant places. [2023-11-28 23:53:09,962 INFO L231 Difference]: Finished difference. Result has 278 places, 307 transitions, 3227 flow [2023-11-28 23:53:09,963 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=2764, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=3227, PETRI_PLACES=278, PETRI_TRANSITIONS=307} [2023-11-28 23:53:09,963 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, 185 predicate places. [2023-11-28 23:53:09,963 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 307 transitions, 3227 flow [2023-11-28 23:53:09,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 44.0) internal successors, (1100), 25 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:53:09,964 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:53:09,964 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 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] [2023-11-28 23:53:09,969 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26396cbe-f567-4919-8f72-969e62029743/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-11-28 23:53:10,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26396cbe-f567-4919-8f72-969e62029743/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:53:10,164 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-28 23:53:10,165 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:53:10,165 INFO L85 PathProgramCache]: Analyzing trace with hash -1638820028, now seen corresponding path program 3 times [2023-11-28 23:53:10,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:53:10,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434239570] [2023-11-28 23:53:10,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:53:10,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:53:10,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:53:10,459 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-28 23:53:10,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:53:10,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434239570] [2023-11-28 23:53:10,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434239570] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:53:10,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [340230075] [2023-11-28 23:53:10,460 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-28 23:53:10,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:53:10,460 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26396cbe-f567-4919-8f72-969e62029743/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:53:10,461 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26396cbe-f567-4919-8f72-969e62029743/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:53:10,463 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26396cbe-f567-4919-8f72-969e62029743/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-28 23:53:10,789 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-28 23:53:10,789 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-28 23:53:10,791 INFO L262 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-28 23:53:10,793 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:53:10,824 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2023-11-28 23:53:10,973 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2023-11-28 23:53:10,992 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-28 23:53:10,992 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:53:10,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [340230075] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:53:10,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-28 23:53:10,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [13] total 18 [2023-11-28 23:53:10,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185508779] [2023-11-28 23:53:10,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:53:10,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-28 23:53:10,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:53:10,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-28 23:53:10,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2023-11-28 23:53:11,184 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 99 [2023-11-28 23:53:11,184 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 307 transitions, 3227 flow. Second operand has 7 states, 7 states have (on average 54.285714285714285) internal successors, (380), 7 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:53:11,185 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:53:11,185 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 99 [2023-11-28 23:53:11,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:53:12,625 INFO L124 PetriNetUnfolderBase]: 3165/7583 cut-off events. [2023-11-28 23:53:12,625 INFO L125 PetriNetUnfolderBase]: For 27048/27526 co-relation queries the response was YES. [2023-11-28 23:53:12,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28170 conditions, 7583 events. 3165/7583 cut-off events. For 27048/27526 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 66140 event pairs, 750 based on Foata normal form. 237/7809 useless extension candidates. Maximal degree in co-relation 28110. Up to 2924 conditions per place. [2023-11-28 23:53:12,701 INFO L140 encePairwiseOnDemand]: 92/99 looper letters, 233 selfloop transitions, 67 changer transitions 0/351 dead transitions. [2023-11-28 23:53:12,701 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 351 transitions, 4176 flow [2023-11-28 23:53:12,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-28 23:53:12,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-28 23:53:12,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 413 transitions. [2023-11-28 23:53:12,703 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5959595959595959 [2023-11-28 23:53:12,703 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 413 transitions. [2023-11-28 23:53:12,703 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 413 transitions. [2023-11-28 23:53:12,703 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:53:12,703 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 413 transitions. [2023-11-28 23:53:12,704 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 59.0) internal successors, (413), 7 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:53:12,705 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 99.0) internal successors, (792), 8 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:53:12,705 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 99.0) internal successors, (792), 8 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:53:12,705 INFO L175 Difference]: Start difference. First operand has 278 places, 307 transitions, 3227 flow. Second operand 7 states and 413 transitions. [2023-11-28 23:53:12,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 351 transitions, 4176 flow [2023-11-28 23:53:12,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 351 transitions, 4110 flow, removed 0 selfloop flow, removed 10 redundant places. [2023-11-28 23:53:12,858 INFO L231 Difference]: Finished difference. Result has 272 places, 304 transitions, 3272 flow [2023-11-28 23:53:12,858 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=3138, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3272, PETRI_PLACES=272, PETRI_TRANSITIONS=304} [2023-11-28 23:53:12,859 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, 179 predicate places. [2023-11-28 23:53:12,859 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 304 transitions, 3272 flow [2023-11-28 23:53:12,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 54.285714285714285) internal successors, (380), 7 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:53:12,859 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:53:12,859 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 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] [2023-11-28 23:53:12,863 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26396cbe-f567-4919-8f72-969e62029743/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-11-28 23:53:13,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26396cbe-f567-4919-8f72-969e62029743/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2023-11-28 23:53:13,060 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-28 23:53:13,060 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:53:13,060 INFO L85 PathProgramCache]: Analyzing trace with hash 736156031, now seen corresponding path program 2 times [2023-11-28 23:53:13,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:53:13,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156634920] [2023-11-28 23:53:13,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:53:13,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:53:13,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:53:13,309 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-28 23:53:13,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:53:13,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156634920] [2023-11-28 23:53:13,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156634920] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:53:13,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2116294245] [2023-11-28 23:53:13,310 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-28 23:53:13,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:53:13,310 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26396cbe-f567-4919-8f72-969e62029743/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:53:13,311 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26396cbe-f567-4919-8f72-969e62029743/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:53:13,312 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26396cbe-f567-4919-8f72-969e62029743/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-28 23:53:13,677 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-28 23:53:13,677 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-28 23:53:13,678 INFO L262 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-28 23:53:13,680 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:53:13,866 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-28 23:53:13,866 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:53:14,058 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-28 23:53:14,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2116294245] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:53:14,059 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 23:53:14,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 30 [2023-11-28 23:53:14,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086467440] [2023-11-28 23:53:14,059 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 23:53:14,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-11-28 23:53:14,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:53:14,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-11-28 23:53:14,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=748, Unknown=0, NotChecked=0, Total=870 [2023-11-28 23:53:14,444 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 99 [2023-11-28 23:53:14,446 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 304 transitions, 3272 flow. Second operand has 30 states, 30 states have (on average 43.6) internal successors, (1308), 30 states have internal predecessors, (1308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:53:14,446 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:53:14,446 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 99 [2023-11-28 23:53:14,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:53:16,094 INFO L124 PetriNetUnfolderBase]: 3012/7422 cut-off events. [2023-11-28 23:53:16,094 INFO L125 PetriNetUnfolderBase]: For 30017/30473 co-relation queries the response was YES. [2023-11-28 23:53:16,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27844 conditions, 7422 events. 3012/7422 cut-off events. For 30017/30473 co-relation queries the response was YES. Maximal size of possible extension queue 332. Compared 65574 event pairs, 2190 based on Foata normal form. 185/7521 useless extension candidates. Maximal degree in co-relation 27784. Up to 2807 conditions per place. [2023-11-28 23:53:16,187 INFO L140 encePairwiseOnDemand]: 89/99 looper letters, 156 selfloop transitions, 138 changer transitions 22/368 dead transitions. [2023-11-28 23:53:16,187 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 368 transitions, 4564 flow [2023-11-28 23:53:16,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-28 23:53:16,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-11-28 23:53:16,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 801 transitions. [2023-11-28 23:53:16,189 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47593582887700536 [2023-11-28 23:53:16,189 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 801 transitions. [2023-11-28 23:53:16,189 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 801 transitions. [2023-11-28 23:53:16,189 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:53:16,189 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 801 transitions. [2023-11-28 23:53:16,191 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 47.11764705882353) internal successors, (801), 17 states have internal predecessors, (801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:53:16,192 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 99.0) internal successors, (1782), 18 states have internal predecessors, (1782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:53:16,192 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 99.0) internal successors, (1782), 18 states have internal predecessors, (1782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:53:16,192 INFO L175 Difference]: Start difference. First operand has 272 places, 304 transitions, 3272 flow. Second operand 17 states and 801 transitions. [2023-11-28 23:53:16,192 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 368 transitions, 4564 flow [2023-11-28 23:53:16,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 368 transitions, 4430 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-28 23:53:16,325 INFO L231 Difference]: Finished difference. Result has 285 places, 324 transitions, 3792 flow [2023-11-28 23:53:16,326 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=3130, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=3792, PETRI_PLACES=285, PETRI_TRANSITIONS=324} [2023-11-28 23:53:16,326 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, 192 predicate places. [2023-11-28 23:53:16,326 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 324 transitions, 3792 flow [2023-11-28 23:53:16,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 43.6) internal successors, (1308), 30 states have internal predecessors, (1308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:53:16,326 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:53:16,326 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2023-11-28 23:53:16,332 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26396cbe-f567-4919-8f72-969e62029743/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-11-28 23:53:16,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26396cbe-f567-4919-8f72-969e62029743/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2023-11-28 23:53:16,527 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-28 23:53:16,527 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:53:16,528 INFO L85 PathProgramCache]: Analyzing trace with hash -734305417, now seen corresponding path program 3 times [2023-11-28 23:53:16,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:53:16,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432594012] [2023-11-28 23:53:16,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:53:16,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:53:16,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:53:16,989 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-11-28 23:53:16,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:53:16,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432594012] [2023-11-28 23:53:16,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432594012] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:53:16,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1818640237] [2023-11-28 23:53:16,990 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-28 23:53:16,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:53:16,990 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26396cbe-f567-4919-8f72-969e62029743/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:53:16,992 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26396cbe-f567-4919-8f72-969e62029743/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:53:17,001 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26396cbe-f567-4919-8f72-969e62029743/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-28 23:53:17,422 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-28 23:53:17,423 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-28 23:53:17,424 INFO L262 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-28 23:53:17,427 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:53:17,461 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2023-11-28 23:53:17,576 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 9 [2023-11-28 23:53:17,588 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-11-28 23:53:17,588 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:53:17,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1818640237] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:53:17,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-28 23:53:17,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2023-11-28 23:53:17,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215437743] [2023-11-28 23:53:17,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:53:17,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-28 23:53:17,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:53:17,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-28 23:53:17,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-11-28 23:53:17,743 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 99 [2023-11-28 23:53:17,743 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 324 transitions, 3792 flow. Second operand has 7 states, 7 states have (on average 53.42857142857143) internal successors, (374), 7 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:53:17,744 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:53:17,744 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 99 [2023-11-28 23:53:17,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:53:19,159 INFO L124 PetriNetUnfolderBase]: 2985/7245 cut-off events. [2023-11-28 23:53:19,159 INFO L125 PetriNetUnfolderBase]: For 26276/26702 co-relation queries the response was YES. [2023-11-28 23:53:19,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27146 conditions, 7245 events. 2985/7245 cut-off events. For 26276/26702 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 62838 event pairs, 705 based on Foata normal form. 219/7454 useless extension candidates. Maximal degree in co-relation 27084. Up to 2720 conditions per place. [2023-11-28 23:53:19,255 INFO L140 encePairwiseOnDemand]: 92/99 looper letters, 240 selfloop transitions, 67 changer transitions 12/370 dead transitions. [2023-11-28 23:53:19,255 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 370 transitions, 4797 flow [2023-11-28 23:53:19,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-28 23:53:19,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-28 23:53:19,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 405 transitions. [2023-11-28 23:53:19,256 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5844155844155844 [2023-11-28 23:53:19,256 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 405 transitions. [2023-11-28 23:53:19,256 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 405 transitions. [2023-11-28 23:53:19,257 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:53:19,257 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 405 transitions. [2023-11-28 23:53:19,257 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 57.857142857142854) internal successors, (405), 7 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:53:19,258 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 99.0) internal successors, (792), 8 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:53:19,258 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 99.0) internal successors, (792), 8 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:53:19,258 INFO L175 Difference]: Start difference. First operand has 285 places, 324 transitions, 3792 flow. Second operand 7 states and 405 transitions. [2023-11-28 23:53:19,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 370 transitions, 4797 flow [2023-11-28 23:53:19,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 370 transitions, 4653 flow, removed 2 selfloop flow, removed 9 redundant places. [2023-11-28 23:53:19,414 INFO L231 Difference]: Finished difference. Result has 281 places, 317 transitions, 3709 flow [2023-11-28 23:53:19,414 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=3643, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=323, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3709, PETRI_PLACES=281, PETRI_TRANSITIONS=317} [2023-11-28 23:53:19,414 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, 188 predicate places. [2023-11-28 23:53:19,415 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 317 transitions, 3709 flow [2023-11-28 23:53:19,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 53.42857142857143) internal successors, (374), 7 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:53:19,415 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:53:19,415 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2023-11-28 23:53:19,420 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26396cbe-f567-4919-8f72-969e62029743/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-11-28 23:53:19,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26396cbe-f567-4919-8f72-969e62029743/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2023-11-28 23:53:19,616 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-28 23:53:19,616 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:53:19,616 INFO L85 PathProgramCache]: Analyzing trace with hash -48358834, now seen corresponding path program 3 times [2023-11-28 23:53:19,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:53:19,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509081220] [2023-11-28 23:53:19,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:53:19,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:53:19,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:53:20,027 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-28 23:53:20,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:53:20,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509081220] [2023-11-28 23:53:20,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509081220] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:53:20,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1940764706] [2023-11-28 23:53:20,027 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-28 23:53:20,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:53:20,028 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26396cbe-f567-4919-8f72-969e62029743/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:53:20,028 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26396cbe-f567-4919-8f72-969e62029743/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:53:20,029 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26396cbe-f567-4919-8f72-969e62029743/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-28 23:53:20,422 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-28 23:53:20,422 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-28 23:53:20,424 INFO L262 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 32 conjunts are in the unsatisfiable core [2023-11-28 23:53:20,427 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:53:20,433 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-28 23:53:20,481 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2023-11-28 23:53:20,605 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-28 23:53:20,606 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-11-28 23:53:20,613 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 17 [2023-11-28 23:53:20,676 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 9 [2023-11-28 23:53:20,736 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-28 23:53:20,736 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:53:20,799 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1141 (Array Int Int))) (< 0 (+ 2147483649 (select (select (store |c_#memory_int#4| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_1141) c_~get_2~0.base) (+ (* c_~id_0~0 4) c_~get_2~0.offset))))) is different from false [2023-11-28 23:53:20,944 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 23:53:20,944 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2023-11-28 23:53:20,952 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 23:53:20,953 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 41 [2023-11-28 23:53:20,958 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 9 [2023-11-28 23:53:21,041 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 18 trivial. 1 not checked. [2023-11-28 23:53:21,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1940764706] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:53:21,041 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 23:53:21,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2023-11-28 23:53:21,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324334225] [2023-11-28 23:53:21,042 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 23:53:21,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-28 23:53:21,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:53:21,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-28 23:53:21,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=290, Unknown=1, NotChecked=34, Total=380 [2023-11-28 23:53:21,120 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 99 [2023-11-28 23:53:21,121 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 317 transitions, 3709 flow. Second operand has 20 states, 20 states have (on average 33.7) internal successors, (674), 20 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:53:21,121 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:53:21,121 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 99 [2023-11-28 23:53:21,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:53:23,260 INFO L124 PetriNetUnfolderBase]: 4441/8571 cut-off events. [2023-11-28 23:53:23,260 INFO L125 PetriNetUnfolderBase]: For 29509/30219 co-relation queries the response was YES. [2023-11-28 23:53:23,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32314 conditions, 8571 events. 4441/8571 cut-off events. For 29509/30219 co-relation queries the response was YES. Maximal size of possible extension queue 345. Compared 65530 event pairs, 705 based on Foata normal form. 435/8977 useless extension candidates. Maximal degree in co-relation 32251. Up to 2500 conditions per place. [2023-11-28 23:53:23,351 INFO L140 encePairwiseOnDemand]: 85/99 looper letters, 390 selfloop transitions, 98 changer transitions 0/522 dead transitions. [2023-11-28 23:53:23,351 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 522 transitions, 6199 flow [2023-11-28 23:53:23,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-28 23:53:23,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-28 23:53:23,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 521 transitions. [2023-11-28 23:53:23,352 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4048174048174048 [2023-11-28 23:53:23,352 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 521 transitions. [2023-11-28 23:53:23,353 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 521 transitions. [2023-11-28 23:53:23,353 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:53:23,353 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 521 transitions. [2023-11-28 23:53:23,353 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 40.07692307692308) internal successors, (521), 13 states have internal predecessors, (521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:53:23,354 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 99.0) internal successors, (1386), 14 states have internal predecessors, (1386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:53:23,355 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 99.0) internal successors, (1386), 14 states have internal predecessors, (1386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:53:23,355 INFO L175 Difference]: Start difference. First operand has 281 places, 317 transitions, 3709 flow. Second operand 13 states and 521 transitions. [2023-11-28 23:53:23,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 522 transitions, 6199 flow [2023-11-28 23:53:23,496 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 522 transitions, 6004 flow, removed 0 selfloop flow, removed 13 redundant places. [2023-11-28 23:53:23,502 INFO L231 Difference]: Finished difference. Result has 279 places, 315 transitions, 3718 flow [2023-11-28 23:53:23,502 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=3522, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3718, PETRI_PLACES=279, PETRI_TRANSITIONS=315} [2023-11-28 23:53:23,503 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, 186 predicate places. [2023-11-28 23:53:23,503 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 315 transitions, 3718 flow [2023-11-28 23:53:23,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 33.7) internal successors, (674), 20 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:53:23,503 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:53:23,503 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2023-11-28 23:53:23,508 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26396cbe-f567-4919-8f72-969e62029743/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2023-11-28 23:53:23,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26396cbe-f567-4919-8f72-969e62029743/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:53:23,703 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-28 23:53:23,704 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:53:23,704 INFO L85 PathProgramCache]: Analyzing trace with hash 291469683, now seen corresponding path program 2 times [2023-11-28 23:53:23,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:53:23,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208710204] [2023-11-28 23:53:23,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:53:23,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:53:23,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:53:24,089 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-28 23:53:24,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:53:24,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208710204] [2023-11-28 23:53:24,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208710204] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:53:24,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1514088965] [2023-11-28 23:53:24,090 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-28 23:53:24,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:53:24,090 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26396cbe-f567-4919-8f72-969e62029743/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:53:24,091 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26396cbe-f567-4919-8f72-969e62029743/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:53:24,100 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26396cbe-f567-4919-8f72-969e62029743/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-28 23:53:24,499 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-28 23:53:24,499 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-28 23:53:24,501 INFO L262 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 55 conjunts are in the unsatisfiable core [2023-11-28 23:53:24,504 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:53:24,513 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-28 23:53:24,652 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-28 23:53:24,790 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-28 23:53:24,791 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-11-28 23:53:24,819 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-28 23:53:25,068 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-28 23:53:25,088 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-28 23:53:25,088 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:53:25,154 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1208 (Array Int Int))) (< (select (select (store |c_#memory_int#4| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_1208) c_~get_2~0.base) (+ (* c_~id_0~0 4) c_~get_2~0.offset)) 9223372039002259456)) is different from false [2023-11-28 23:53:25,305 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 23:53:25,305 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 27 [2023-11-28 23:53:25,314 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 23:53:25,314 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 33 [2023-11-28 23:53:25,320 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2023-11-28 23:53:25,584 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 13 trivial. 1 not checked. [2023-11-28 23:53:25,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1514088965] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:53:25,584 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 23:53:25,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 16, 12] total 33 [2023-11-28 23:53:25,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253605724] [2023-11-28 23:53:25,584 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 23:53:25,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-11-28 23:53:25,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:53:25,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-11-28 23:53:25,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=911, Unknown=1, NotChecked=62, Total=1122 [2023-11-28 23:53:25,651 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 99 [2023-11-28 23:53:25,652 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 315 transitions, 3718 flow. Second operand has 34 states, 34 states have (on average 30.08823529411765) internal successors, (1023), 34 states have internal predecessors, (1023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:53:25,652 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:53:25,652 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 99 [2023-11-28 23:53:25,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:53:29,842 INFO L124 PetriNetUnfolderBase]: 7499/14388 cut-off events. [2023-11-28 23:53:29,842 INFO L125 PetriNetUnfolderBase]: For 59290/60352 co-relation queries the response was YES. [2023-11-28 23:53:29,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54746 conditions, 14388 events. 7499/14388 cut-off events. For 59290/60352 co-relation queries the response was YES. Maximal size of possible extension queue 524. Compared 117008 event pairs, 1128 based on Foata normal form. 361/14725 useless extension candidates. Maximal degree in co-relation 54688. Up to 5738 conditions per place. [2023-11-28 23:53:30,021 INFO L140 encePairwiseOnDemand]: 81/99 looper letters, 397 selfloop transitions, 137 changer transitions 0/565 dead transitions. [2023-11-28 23:53:30,021 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 565 transitions, 7437 flow [2023-11-28 23:53:30,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-11-28 23:53:30,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2023-11-28 23:53:30,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 976 transitions. [2023-11-28 23:53:30,023 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32861952861952864 [2023-11-28 23:53:30,023 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 976 transitions. [2023-11-28 23:53:30,023 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 976 transitions. [2023-11-28 23:53:30,024 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:53:30,024 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 976 transitions. [2023-11-28 23:53:30,025 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 32.53333333333333) internal successors, (976), 30 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:53:30,028 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 99.0) internal successors, (3069), 31 states have internal predecessors, (3069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:53:30,028 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 99.0) internal successors, (3069), 31 states have internal predecessors, (3069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:53:30,028 INFO L175 Difference]: Start difference. First operand has 279 places, 315 transitions, 3718 flow. Second operand 30 states and 976 transitions. [2023-11-28 23:53:30,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 565 transitions, 7437 flow [2023-11-28 23:53:30,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 565 transitions, 7072 flow, removed 0 selfloop flow, removed 13 redundant places. [2023-11-28 23:53:30,326 INFO L231 Difference]: Finished difference. Result has 299 places, 371 transitions, 4800 flow [2023-11-28 23:53:30,327 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=3491, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=4800, PETRI_PLACES=299, PETRI_TRANSITIONS=371} [2023-11-28 23:53:30,327 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, 206 predicate places. [2023-11-28 23:53:30,327 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 371 transitions, 4800 flow [2023-11-28 23:53:30,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 30.08823529411765) internal successors, (1023), 34 states have internal predecessors, (1023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:53:30,328 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:53:30,328 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 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, 1] [2023-11-28 23:53:30,333 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26396cbe-f567-4919-8f72-969e62029743/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2023-11-28 23:53:30,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26396cbe-f567-4919-8f72-969e62029743/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:53:30,528 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-28 23:53:30,529 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:53:30,529 INFO L85 PathProgramCache]: Analyzing trace with hash -1499122726, now seen corresponding path program 2 times [2023-11-28 23:53:30,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:53:30,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496520683] [2023-11-28 23:53:30,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:53:30,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:53:30,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:53:30,998 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-28 23:53:30,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:53:30,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496520683] [2023-11-28 23:53:30,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496520683] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:53:30,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [950013942] [2023-11-28 23:53:30,998 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-28 23:53:30,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:53:30,999 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26396cbe-f567-4919-8f72-969e62029743/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:53:30,999 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26396cbe-f567-4919-8f72-969e62029743/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:53:31,004 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26396cbe-f567-4919-8f72-969e62029743/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-11-28 23:53:31,352 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-28 23:53:31,353 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-28 23:53:31,355 INFO L262 TraceCheckSpWp]: Trace formula consists of 341 conjuncts, 44 conjunts are in the unsatisfiable core [2023-11-28 23:53:31,358 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:53:31,366 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-28 23:53:31,527 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-28 23:53:31,668 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-28 23:53:31,668 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-11-28 23:53:31,710 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-28 23:53:31,833 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-28 23:53:31,898 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-28 23:53:31,898 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:53:31,977 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1272 (Array Int Int))) (< (select (select (store |c_#memory_int#4| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_1272) c_~get_2~0.base) (+ (* c_~id_0~0 4) c_~get_2~0.offset)) 2147483648)) is different from false [2023-11-28 23:53:32,118 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 23:53:32,119 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 27 [2023-11-28 23:53:32,126 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 23:53:32,127 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 33 [2023-11-28 23:53:32,132 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2023-11-28 23:53:32,370 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 13 trivial. 1 not checked. [2023-11-28 23:53:32,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [950013942] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:53:32,370 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 23:53:32,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 14, 14] total 32 [2023-11-28 23:53:32,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973829552] [2023-11-28 23:53:32,370 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 23:53:32,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-11-28 23:53:32,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:53:32,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-11-28 23:53:32,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=856, Unknown=1, NotChecked=60, Total=1056 [2023-11-28 23:53:32,435 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 99 [2023-11-28 23:53:32,436 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 371 transitions, 4800 flow. Second operand has 33 states, 33 states have (on average 33.81818181818182) internal successors, (1116), 33 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:53:32,436 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:53:32,436 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 99 [2023-11-28 23:53:32,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:53:36,929 INFO L124 PetriNetUnfolderBase]: 7175/13440 cut-off events. [2023-11-28 23:53:36,930 INFO L125 PetriNetUnfolderBase]: For 47883/48954 co-relation queries the response was YES. [2023-11-28 23:53:37,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50074 conditions, 13440 events. 7175/13440 cut-off events. For 47883/48954 co-relation queries the response was YES. Maximal size of possible extension queue 485. Compared 106385 event pairs, 1128 based on Foata normal form. 693/13965 useless extension candidates. Maximal degree in co-relation 50010. Up to 1976 conditions per place. [2023-11-28 23:53:37,108 INFO L140 encePairwiseOnDemand]: 84/99 looper letters, 473 selfloop transitions, 150 changer transitions 294/945 dead transitions. [2023-11-28 23:53:37,108 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 945 transitions, 11385 flow [2023-11-28 23:53:37,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-11-28 23:53:37,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2023-11-28 23:53:37,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 1389 transitions. [2023-11-28 23:53:37,110 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3897306397306397 [2023-11-28 23:53:37,110 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 1389 transitions. [2023-11-28 23:53:37,110 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 1389 transitions. [2023-11-28 23:53:37,111 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:53:37,111 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 1389 transitions. [2023-11-28 23:53:37,113 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 38.583333333333336) internal successors, (1389), 36 states have internal predecessors, (1389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:53:37,117 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 99.0) internal successors, (3663), 37 states have internal predecessors, (3663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:53:37,118 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 99.0) internal successors, (3663), 37 states have internal predecessors, (3663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:53:37,118 INFO L175 Difference]: Start difference. First operand has 299 places, 371 transitions, 4800 flow. Second operand 36 states and 1389 transitions. [2023-11-28 23:53:37,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 945 transitions, 11385 flow [2023-11-28 23:53:37,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 945 transitions, 11278 flow, removed 32 selfloop flow, removed 12 redundant places. [2023-11-28 23:53:37,325 INFO L231 Difference]: Finished difference. Result has 321 places, 362 transitions, 4877 flow [2023-11-28 23:53:37,326 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=4717, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=370, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=4877, PETRI_PLACES=321, PETRI_TRANSITIONS=362} [2023-11-28 23:53:37,326 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, 228 predicate places. [2023-11-28 23:53:37,326 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 362 transitions, 4877 flow [2023-11-28 23:53:37,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 33.81818181818182) internal successors, (1116), 33 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:53:37,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:53:37,327 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 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, 1] [2023-11-28 23:53:37,332 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26396cbe-f567-4919-8f72-969e62029743/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-11-28 23:53:37,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26396cbe-f567-4919-8f72-969e62029743/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2023-11-28 23:53:37,527 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-28 23:53:37,528 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:53:37,528 INFO L85 PathProgramCache]: Analyzing trace with hash 445594950, now seen corresponding path program 2 times [2023-11-28 23:53:37,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:53:37,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846051449] [2023-11-28 23:53:37,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:53:37,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:53:37,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:53:37,916 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-28 23:53:37,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:53:37,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846051449] [2023-11-28 23:53:37,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846051449] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:53:37,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [227630007] [2023-11-28 23:53:37,917 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-28 23:53:37,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:53:37,917 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26396cbe-f567-4919-8f72-969e62029743/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:53:37,918 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26396cbe-f567-4919-8f72-969e62029743/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:53:37,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26396cbe-f567-4919-8f72-969e62029743/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-11-28 23:53:38,260 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-28 23:53:38,260 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-28 23:53:38,262 INFO L262 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 41 conjunts are in the unsatisfiable core [2023-11-28 23:53:38,264 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:53:38,271 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-28 23:53:38,413 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-28 23:53:38,540 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-28 23:53:38,541 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-11-28 23:53:38,566 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-28 23:53:38,703 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-11-28 23:53:38,719 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-28 23:53:38,719 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:53:38,939 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 23:53:38,939 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 29 [2023-11-28 23:53:38,947 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 23:53:38,947 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 39 [2023-11-28 23:53:38,952 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 9 [2023-11-28 23:53:39,185 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-28 23:53:39,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [227630007] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:53:39,185 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 23:53:39,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 12, 12] total 29 [2023-11-28 23:53:39,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839653506] [2023-11-28 23:53:39,185 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 23:53:39,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-11-28 23:53:39,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:53:39,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-11-28 23:53:39,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=736, Unknown=3, NotChecked=0, Total=870 [2023-11-28 23:53:39,851 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 99 [2023-11-28 23:53:39,852 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 362 transitions, 4877 flow. Second operand has 30 states, 30 states have (on average 43.6) internal successors, (1308), 30 states have internal predecessors, (1308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:53:39,852 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:53:39,853 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 99 [2023-11-28 23:53:39,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:53:42,570 INFO L124 PetriNetUnfolderBase]: 2957/7666 cut-off events. [2023-11-28 23:53:42,571 INFO L125 PetriNetUnfolderBase]: For 31649/31901 co-relation queries the response was YES. [2023-11-28 23:53:42,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28722 conditions, 7666 events. 2957/7666 cut-off events. For 31649/31901 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 68419 event pairs, 552 based on Foata normal form. 156/7772 useless extension candidates. Maximal degree in co-relation 28662. Up to 2448 conditions per place. [2023-11-28 23:53:42,663 INFO L140 encePairwiseOnDemand]: 89/99 looper letters, 231 selfloop transitions, 82 changer transitions 151/501 dead transitions. [2023-11-28 23:53:42,663 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 501 transitions, 7223 flow [2023-11-28 23:53:42,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-28 23:53:42,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-11-28 23:53:42,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 1186 transitions. [2023-11-28 23:53:42,665 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46076146076146074 [2023-11-28 23:53:42,665 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 1186 transitions. [2023-11-28 23:53:42,665 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 1186 transitions. [2023-11-28 23:53:42,665 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:53:42,665 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 1186 transitions. [2023-11-28 23:53:42,667 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 45.61538461538461) internal successors, (1186), 26 states have internal predecessors, (1186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:53:42,669 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 99.0) internal successors, (2673), 27 states have internal predecessors, (2673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:53:42,669 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 99.0) internal successors, (2673), 27 states have internal predecessors, (2673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:53:42,669 INFO L175 Difference]: Start difference. First operand has 321 places, 362 transitions, 4877 flow. Second operand 26 states and 1186 transitions. [2023-11-28 23:53:42,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 501 transitions, 7223 flow [2023-11-28 23:53:42,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 501 transitions, 6969 flow, removed 22 selfloop flow, removed 31 redundant places. [2023-11-28 23:53:42,894 INFO L231 Difference]: Finished difference. Result has 302 places, 260 transitions, 3372 flow [2023-11-28 23:53:42,894 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=4660, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=361, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=3372, PETRI_PLACES=302, PETRI_TRANSITIONS=260} [2023-11-28 23:53:42,895 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, 209 predicate places. [2023-11-28 23:53:42,895 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 260 transitions, 3372 flow [2023-11-28 23:53:42,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 43.6) internal successors, (1308), 30 states have internal predecessors, (1308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:53:42,895 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:53:42,895 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 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, 1, 1] [2023-11-28 23:53:42,901 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26396cbe-f567-4919-8f72-969e62029743/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2023-11-28 23:53:43,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26396cbe-f567-4919-8f72-969e62029743/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2023-11-28 23:53:43,096 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-28 23:53:43,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:53:43,096 INFO L85 PathProgramCache]: Analyzing trace with hash -1267401355, now seen corresponding path program 2 times [2023-11-28 23:53:43,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:53:43,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069854005] [2023-11-28 23:53:43,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:53:43,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:53:43,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:53:43,446 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-11-28 23:53:43,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:53:43,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069854005] [2023-11-28 23:53:43,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069854005] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:53:43,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1231928817] [2023-11-28 23:53:43,447 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-28 23:53:43,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:53:43,447 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26396cbe-f567-4919-8f72-969e62029743/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:53:43,448 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26396cbe-f567-4919-8f72-969e62029743/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:53:43,448 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26396cbe-f567-4919-8f72-969e62029743/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-11-28 23:53:43,721 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-28 23:53:43,721 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-28 23:53:43,723 INFO L262 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-28 23:53:43,725 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:53:43,745 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2023-11-28 23:53:43,862 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 9 [2023-11-28 23:53:43,899 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-11-28 23:53:43,899 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:53:43,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1231928817] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:53:43,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-28 23:53:43,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2023-11-28 23:53:43,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554055654] [2023-11-28 23:53:43,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:53:43,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-28 23:53:43,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:53:43,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-28 23:53:43,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2023-11-28 23:53:44,134 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 99 [2023-11-28 23:53:44,134 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 260 transitions, 3372 flow. Second operand has 8 states, 8 states have (on average 51.5) internal successors, (412), 8 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:53:44,135 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:53:44,135 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 99 [2023-11-28 23:53:44,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:53:45,643 INFO L124 PetriNetUnfolderBase]: 1889/4892 cut-off events. [2023-11-28 23:53:45,644 INFO L125 PetriNetUnfolderBase]: For 17682/17804 co-relation queries the response was YES. [2023-11-28 23:53:45,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17361 conditions, 4892 events. 1889/4892 cut-off events. For 17682/17804 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 40388 event pairs, 708 based on Foata normal form. 226/5097 useless extension candidates. Maximal degree in co-relation 17310. Up to 1576 conditions per place. [2023-11-28 23:53:45,691 INFO L140 encePairwiseOnDemand]: 90/99 looper letters, 297 selfloop transitions, 69 changer transitions 4/406 dead transitions. [2023-11-28 23:53:45,691 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 406 transitions, 5351 flow [2023-11-28 23:53:45,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-28 23:53:45,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-28 23:53:45,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 511 transitions. [2023-11-28 23:53:45,692 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5735129068462402 [2023-11-28 23:53:45,692 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 511 transitions. [2023-11-28 23:53:45,692 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 511 transitions. [2023-11-28 23:53:45,692 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:53:45,693 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 511 transitions. [2023-11-28 23:53:45,694 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 56.77777777777778) internal successors, (511), 9 states have internal predecessors, (511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:53:45,695 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 99.0) internal successors, (990), 10 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:53:45,695 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 99.0) internal successors, (990), 10 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:53:45,695 INFO L175 Difference]: Start difference. First operand has 302 places, 260 transitions, 3372 flow. Second operand 9 states and 511 transitions. [2023-11-28 23:53:45,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 406 transitions, 5351 flow [2023-11-28 23:53:45,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 406 transitions, 4547 flow, removed 22 selfloop flow, removed 44 redundant places. [2023-11-28 23:53:45,787 INFO L231 Difference]: Finished difference. Result has 246 places, 254 transitions, 2800 flow [2023-11-28 23:53:45,788 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=2686, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2800, PETRI_PLACES=246, PETRI_TRANSITIONS=254} [2023-11-28 23:53:45,788 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, 153 predicate places. [2023-11-28 23:53:45,788 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 254 transitions, 2800 flow [2023-11-28 23:53:45,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 51.5) internal successors, (412), 8 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:53:45,789 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:53:45,789 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 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, 1, 1, 1] [2023-11-28 23:53:45,794 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26396cbe-f567-4919-8f72-969e62029743/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2023-11-28 23:53:45,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26396cbe-f567-4919-8f72-969e62029743/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2023-11-28 23:53:45,989 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-28 23:53:45,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:53:45,990 INFO L85 PathProgramCache]: Analyzing trace with hash -634735191, now seen corresponding path program 2 times [2023-11-28 23:53:45,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:53:45,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983044712] [2023-11-28 23:53:45,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:53:45,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:53:46,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:53:46,368 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-11-28 23:53:46,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:53:46,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983044712] [2023-11-28 23:53:46,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983044712] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:53:46,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2097736509] [2023-11-28 23:53:46,369 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-28 23:53:46,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:53:46,369 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26396cbe-f567-4919-8f72-969e62029743/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:53:46,370 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26396cbe-f567-4919-8f72-969e62029743/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:53:46,370 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26396cbe-f567-4919-8f72-969e62029743/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-11-28 23:53:46,553 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-28 23:53:46,553 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-28 23:53:46,555 INFO L262 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-28 23:53:46,557 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:53:46,581 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2023-11-28 23:53:46,694 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2023-11-28 23:53:46,750 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-11-28 23:53:46,750 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:53:46,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2097736509] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:53:46,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-28 23:53:46,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 13 [2023-11-28 23:53:46,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206812790] [2023-11-28 23:53:46,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:53:46,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-28 23:53:46,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:53:46,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-28 23:53:46,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2023-11-28 23:53:46,979 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 99 [2023-11-28 23:53:46,980 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 254 transitions, 2800 flow. Second operand has 9 states, 9 states have (on average 51.111111111111114) internal successors, (460), 9 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:53:46,980 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:53:46,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 99 [2023-11-28 23:53:46,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:53:47,849 INFO L124 PetriNetUnfolderBase]: 1721/4234 cut-off events. [2023-11-28 23:53:47,850 INFO L125 PetriNetUnfolderBase]: For 11627/11719 co-relation queries the response was YES. [2023-11-28 23:53:47,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14237 conditions, 4234 events. 1721/4234 cut-off events. For 11627/11719 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 32488 event pairs, 276 based on Foata normal form. 208/4421 useless extension candidates. Maximal degree in co-relation 14212. Up to 760 conditions per place. [2023-11-28 23:53:47,871 INFO L140 encePairwiseOnDemand]: 90/99 looper letters, 0 selfloop transitions, 0 changer transitions 449/449 dead transitions. [2023-11-28 23:53:47,872 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 449 transitions, 5112 flow [2023-11-28 23:53:47,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-28 23:53:47,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-28 23:53:47,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 568 transitions. [2023-11-28 23:53:47,873 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5737373737373738 [2023-11-28 23:53:47,873 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 568 transitions. [2023-11-28 23:53:47,873 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 568 transitions. [2023-11-28 23:53:47,873 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:53:47,873 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 568 transitions. [2023-11-28 23:53:47,874 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 56.8) internal successors, (568), 10 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:53:47,875 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 99.0) internal successors, (1089), 11 states have internal predecessors, (1089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:53:47,875 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 99.0) internal successors, (1089), 11 states have internal predecessors, (1089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:53:47,875 INFO L175 Difference]: Start difference. First operand has 246 places, 254 transitions, 2800 flow. Second operand 10 states and 568 transitions. [2023-11-28 23:53:47,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 449 transitions, 5112 flow [2023-11-28 23:53:47,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 449 transitions, 4900 flow, removed 2 selfloop flow, removed 11 redundant places. [2023-11-28 23:53:47,913 INFO L231 Difference]: Finished difference. Result has 240 places, 0 transitions, 0 flow [2023-11-28 23:53:47,914 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=2584, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=0, PETRI_PLACES=240, PETRI_TRANSITIONS=0} [2023-11-28 23:53:47,914 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, 147 predicate places. [2023-11-28 23:53:47,914 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 0 transitions, 0 flow [2023-11-28 23:53:47,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 51.111111111111114) internal successors, (460), 9 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:53:47,916 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (43 of 44 remaining) [2023-11-28 23:53:47,916 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (42 of 44 remaining) [2023-11-28 23:53:47,916 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (41 of 44 remaining) [2023-11-28 23:53:47,917 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (40 of 44 remaining) [2023-11-28 23:53:47,917 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (39 of 44 remaining) [2023-11-28 23:53:47,917 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (38 of 44 remaining) [2023-11-28 23:53:47,917 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (37 of 44 remaining) [2023-11-28 23:53:47,917 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (36 of 44 remaining) [2023-11-28 23:53:47,917 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (35 of 44 remaining) [2023-11-28 23:53:47,917 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (34 of 44 remaining) [2023-11-28 23:53:47,917 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 44 remaining) [2023-11-28 23:53:47,917 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 44 remaining) [2023-11-28 23:53:47,917 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 44 remaining) [2023-11-28 23:53:47,917 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 44 remaining) [2023-11-28 23:53:47,917 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 44 remaining) [2023-11-28 23:53:47,918 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 44 remaining) [2023-11-28 23:53:47,918 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 44 remaining) [2023-11-28 23:53:47,918 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 44 remaining) [2023-11-28 23:53:47,918 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 44 remaining) [2023-11-28 23:53:47,918 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 44 remaining) [2023-11-28 23:53:47,918 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 44 remaining) [2023-11-28 23:53:47,918 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 44 remaining) [2023-11-28 23:53:47,918 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 44 remaining) [2023-11-28 23:53:47,918 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 44 remaining) [2023-11-28 23:53:47,918 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 44 remaining) [2023-11-28 23:53:47,919 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 44 remaining) [2023-11-28 23:53:47,919 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 44 remaining) [2023-11-28 23:53:47,919 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 44 remaining) [2023-11-28 23:53:47,919 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 44 remaining) [2023-11-28 23:53:47,919 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 44 remaining) [2023-11-28 23:53:47,919 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (13 of 44 remaining) [2023-11-28 23:53:47,919 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 44 remaining) [2023-11-28 23:53:47,919 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 44 remaining) [2023-11-28 23:53:47,919 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 44 remaining) [2023-11-28 23:53:47,919 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 44 remaining) [2023-11-28 23:53:47,920 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 44 remaining) [2023-11-28 23:53:47,920 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 44 remaining) [2023-11-28 23:53:47,920 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 44 remaining) [2023-11-28 23:53:47,920 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 44 remaining) [2023-11-28 23:53:47,920 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 44 remaining) [2023-11-28 23:53:47,920 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 44 remaining) [2023-11-28 23:53:47,920 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 44 remaining) [2023-11-28 23:53:47,920 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 44 remaining) [2023-11-28 23:53:47,920 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 44 remaining) [2023-11-28 23:53:47,926 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26396cbe-f567-4919-8f72-969e62029743/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2023-11-28 23:53:48,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26396cbe-f567-4919-8f72-969e62029743/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2023-11-28 23:53:48,121 INFO L445 BasicCegarLoop]: Path program histogram: [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:53:48,125 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-28 23:53:48,125 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-28 23:53:48,128 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 11:53:48 BasicIcfg [2023-11-28 23:53:48,129 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-28 23:53:48,129 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-28 23:53:48,129 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-28 23:53:48,129 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-28 23:53:48,129 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:52:00" (3/4) ... [2023-11-28 23:53:48,131 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-28 23:53:48,133 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-11-28 23:53:48,133 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-11-28 23:53:48,141 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 226 nodes and edges [2023-11-28 23:53:48,142 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 43 nodes and edges [2023-11-28 23:53:48,142 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2023-11-28 23:53:48,143 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-28 23:53:48,238 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26396cbe-f567-4919-8f72-969e62029743/bin/uautomizer-verify-BQ2R08f2Ya/witness.graphml [2023-11-28 23:53:48,238 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26396cbe-f567-4919-8f72-969e62029743/bin/uautomizer-verify-BQ2R08f2Ya/witness.yml [2023-11-28 23:53:48,239 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-28 23:53:48,240 INFO L158 Benchmark]: Toolchain (without parser) took 109694.58ms. Allocated memory was 134.2MB in the beginning and 5.3GB in the end (delta: 5.2GB). Free memory was 88.6MB in the beginning and 2.6GB in the end (delta: -2.5GB). Peak memory consumption was 2.7GB. Max. memory is 16.1GB. [2023-11-28 23:53:48,240 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 134.2MB. Free memory is still 84.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-28 23:53:48,240 INFO L158 Benchmark]: CACSL2BoogieTranslator took 289.65ms. Allocated memory is still 134.2MB. Free memory was 88.6MB in the beginning and 76.0MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-28 23:53:48,241 INFO L158 Benchmark]: Boogie Procedure Inliner took 51.98ms. Allocated memory is still 134.2MB. Free memory was 76.0MB in the beginning and 73.1MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-28 23:53:48,241 INFO L158 Benchmark]: Boogie Preprocessor took 70.28ms. Allocated memory is still 134.2MB. Free memory was 73.1MB in the beginning and 69.4MB in the end (delta: 3.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-28 23:53:48,241 INFO L158 Benchmark]: RCFGBuilder took 1049.37ms. Allocated memory was 134.2MB in the beginning and 197.1MB in the end (delta: 62.9MB). Free memory was 69.4MB in the beginning and 137.5MB in the end (delta: -68.0MB). Peak memory consumption was 38.7MB. Max. memory is 16.1GB. [2023-11-28 23:53:48,241 INFO L158 Benchmark]: TraceAbstraction took 108116.78ms. Allocated memory was 197.1MB in the beginning and 5.3GB in the end (delta: 5.1GB). Free memory was 136.4MB in the beginning and 2.6GB in the end (delta: -2.5GB). Peak memory consumption was 2.6GB. Max. memory is 16.1GB. [2023-11-28 23:53:48,242 INFO L158 Benchmark]: Witness Printer took 109.97ms. Allocated memory is still 5.3GB. Free memory was 2.6GB in the beginning and 2.6GB in the end (delta: 7.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-28 23:53:48,243 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 134.2MB. Free memory is still 84.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 289.65ms. Allocated memory is still 134.2MB. Free memory was 88.6MB in the beginning and 76.0MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 51.98ms. Allocated memory is still 134.2MB. Free memory was 76.0MB in the beginning and 73.1MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 70.28ms. Allocated memory is still 134.2MB. Free memory was 73.1MB in the beginning and 69.4MB in the end (delta: 3.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1049.37ms. Allocated memory was 134.2MB in the beginning and 197.1MB in the end (delta: 62.9MB). Free memory was 69.4MB in the beginning and 137.5MB in the end (delta: -68.0MB). Peak memory consumption was 38.7MB. Max. memory is 16.1GB. * TraceAbstraction took 108116.78ms. Allocated memory was 197.1MB in the beginning and 5.3GB in the end (delta: 5.1GB). Free memory was 136.4MB in the beginning and 2.6GB in the end (delta: -2.5GB). Peak memory consumption was 2.6GB. Max. memory is 16.1GB. * Witness Printer took 109.97ms. Allocated memory is still 5.3GB. Free memory was 2.6GB in the beginning and 2.6GB in the end (delta: 7.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 121]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 121]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 122]: 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: 122]: 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: 121]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 121]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 122]: 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: 122]: 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: 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: 103]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 82]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 103]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 82]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 103]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 83]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 103]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 83]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 114]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 84]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 114]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 84]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 114]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 114]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 92]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 92]: 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, 132 locations, 44 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: 108.0s, OverallIterations: 40, TraceHistogramMax: 5, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 76.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 31 mSolverCounterUnknown, 8516 SdHoareTripleChecker+Valid, 21.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 7995 mSDsluCounter, 8411 SdHoareTripleChecker+Invalid, 18.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 1330 IncrementalHoareTripleChecker+Unchecked, 8207 mSDsCounter, 701 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 26330 IncrementalHoareTripleChecker+Invalid, 28392 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 701 mSolverCounterUnsat, 204 mSDtfsCounter, 26330 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2007 GetRequests, 1223 SyntacticMatches, 26 SemanticMatches, 758 ConstructedPredicates, 7 IntricatePredicates, 0 DeprecatedPredicates, 6002 ImplicationChecksByTransitivity, 15.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4877occurred in iteration=37, InterpolantAutomatonStates: 494, 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: 0.7s SsaConstructionTime, 3.2s SatisfiabilityAnalysisTime, 19.5s InterpolantComputationTime, 1981 NumberOfCodeBlocks, 1936 NumberOfCodeBlocksAsserted, 79 NumberOfCheckSat, 2542 ConstructedInterpolants, 171 QuantifiedInterpolants, 23718 SizeOfPredicates, 264 NumberOfNonLiveVariables, 6994 ConjunctsInSsa, 580 ConjunctsInUnsatCore, 84 InterpolantComputations, 21 PerfectInterpolantSequences, 638/999 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 30 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-28 23:53:48,264 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26396cbe-f567-4919-8f72-969e62029743/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE