./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_92-evilcollapse_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11132958-68b6-46ce-8a50-f82952e5dd1b/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11132958-68b6-46ce-8a50-f82952e5dd1b/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_11132958-68b6-46ce-8a50-f82952e5dd1b/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11132958-68b6-46ce-8a50-f82952e5dd1b/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_92-evilcollapse_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11132958-68b6-46ce-8a50-f82952e5dd1b/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_11132958-68b6-46ce-8a50-f82952e5dd1b/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 6efa0097353392a416215c2535cfc6cdc34364d9b0eb2844e37da9edef467642 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 06:33:26,963 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 06:33:27,026 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11132958-68b6-46ce-8a50-f82952e5dd1b/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-29 06:33:27,030 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 06:33:27,031 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 06:33:27,053 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 06:33:27,054 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 06:33:27,054 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 06:33:27,055 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 06:33:27,055 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 06:33:27,056 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 06:33:27,057 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 06:33:27,057 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 06:33:27,058 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 06:33:27,059 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 06:33:27,059 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 06:33:27,060 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 06:33:27,060 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 06:33:27,061 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 06:33:27,062 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 06:33:27,062 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 06:33:27,063 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 06:33:27,063 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 06:33:27,064 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 06:33:27,064 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-29 06:33:27,065 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 06:33:27,065 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 06:33:27,065 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 06:33:27,066 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 06:33:27,066 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 06:33:27,067 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 06:33:27,067 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 06:33:27,067 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 06:33:27,068 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 06:33:27,068 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 06:33:27,068 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 06:33:27,068 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 06:33:27,069 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 06:33:27,069 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 06:33:27,069 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 06:33:27,069 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 06:33:27,070 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 06:33:27,070 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 06:33:27,070 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 06:33:27,070 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_11132958-68b6-46ce-8a50-f82952e5dd1b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11132958-68b6-46ce-8a50-f82952e5dd1b/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6efa0097353392a416215c2535cfc6cdc34364d9b0eb2844e37da9edef467642 [2023-11-29 06:33:27,266 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 06:33:27,287 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 06:33:27,289 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 06:33:27,290 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 06:33:27,291 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 06:33:27,292 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11132958-68b6-46ce-8a50-f82952e5dd1b/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/goblint-regression/28-race_reach_92-evilcollapse_racing.i [2023-11-29 06:33:29,989 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 06:33:30,244 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 06:33:30,245 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11132958-68b6-46ce-8a50-f82952e5dd1b/sv-benchmarks/c/goblint-regression/28-race_reach_92-evilcollapse_racing.i [2023-11-29 06:33:30,263 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11132958-68b6-46ce-8a50-f82952e5dd1b/bin/uautomizer-verify-BQ2R08f2Ya/data/36a11409d/06b9496e69354bcaa7ff90211bfc313c/FLAG70e3a3e86 [2023-11-29 06:33:30,277 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11132958-68b6-46ce-8a50-f82952e5dd1b/bin/uautomizer-verify-BQ2R08f2Ya/data/36a11409d/06b9496e69354bcaa7ff90211bfc313c [2023-11-29 06:33:30,279 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 06:33:30,281 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 06:33:30,282 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 06:33:30,282 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 06:33:30,288 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 06:33:30,288 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:33:30" (1/1) ... [2023-11-29 06:33:30,289 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@218dd53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:33:30, skipping insertion in model container [2023-11-29 06:33:30,289 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:33:30" (1/1) ... [2023-11-29 06:33:30,360 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 06:33:30,806 WARN L1590 CHandler]: Possible shadowing of function new [2023-11-29 06:33:30,806 WARN L1590 CHandler]: Possible shadowing of function new [2023-11-29 06:33:30,807 WARN L1590 CHandler]: Possible shadowing of function new [2023-11-29 06:33:30,807 WARN L1590 CHandler]: Possible shadowing of function new [2023-11-29 06:33:30,832 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 06:33:30,852 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 06:33:30,892 WARN L1590 CHandler]: Possible shadowing of function new [2023-11-29 06:33:30,892 WARN L1590 CHandler]: Possible shadowing of function new [2023-11-29 06:33:30,893 WARN L1590 CHandler]: Possible shadowing of function new [2023-11-29 06:33:30,893 WARN L1590 CHandler]: Possible shadowing of function new [2023-11-29 06:33:30,908 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 06:33:30,967 INFO L206 MainTranslator]: Completed translation [2023-11-29 06:33:30,968 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:33:30 WrapperNode [2023-11-29 06:33:30,968 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 06:33:30,969 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 06:33:30,969 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 06:33:30,969 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 06:33:30,975 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:33:30" (1/1) ... [2023-11-29 06:33:30,996 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:33:30" (1/1) ... [2023-11-29 06:33:31,030 INFO L138 Inliner]: procedures = 279, calls = 56, calls flagged for inlining = 12, calls inlined = 13, statements flattened = 259 [2023-11-29 06:33:31,030 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 06:33:31,031 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 06:33:31,031 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 06:33:31,032 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 06:33:31,043 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:33:30" (1/1) ... [2023-11-29 06:33:31,043 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:33:30" (1/1) ... [2023-11-29 06:33:31,049 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:33:30" (1/1) ... [2023-11-29 06:33:31,076 INFO L175 MemorySlicer]: Split 32 memory accesses to 4 slices as follows [2, 5, 2, 23]. 72 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5, 0, 0]. The 15 writes are split as follows [0, 0, 1, 14]. [2023-11-29 06:33:31,077 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:33:30" (1/1) ... [2023-11-29 06:33:31,077 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:33:30" (1/1) ... [2023-11-29 06:33:31,092 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:33:30" (1/1) ... [2023-11-29 06:33:31,097 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:33:30" (1/1) ... [2023-11-29 06:33:31,101 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:33:30" (1/1) ... [2023-11-29 06:33:31,103 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:33:30" (1/1) ... [2023-11-29 06:33:31,109 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 06:33:31,110 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 06:33:31,110 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 06:33:31,110 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 06:33:31,111 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:33:30" (1/1) ... [2023-11-29 06:33:31,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 06:33:31,127 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11132958-68b6-46ce-8a50-f82952e5dd1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:33:31,140 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11132958-68b6-46ce-8a50-f82952e5dd1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 06:33:31,153 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11132958-68b6-46ce-8a50-f82952e5dd1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 06:33:31,188 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 06:33:31,189 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-29 06:33:31,189 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-29 06:33:31,189 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-29 06:33:31,189 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2023-11-29 06:33:31,189 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 06:33:31,189 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-29 06:33:31,189 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-29 06:33:31,189 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-29 06:33:31,189 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-29 06:33:31,190 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-29 06:33:31,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 06:33:31,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-29 06:33:31,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-29 06:33:31,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-29 06:33:31,190 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-29 06:33:31,190 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-29 06:33:31,191 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 06:33:31,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-29 06:33:31,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-29 06:33:31,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-29 06:33:31,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2023-11-29 06:33:31,191 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-29 06:33:31,191 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-29 06:33:31,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 06:33:31,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 06:33:31,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 06:33:31,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-29 06:33:31,192 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 06:33:31,192 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 06:33:31,193 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-29 06:33:31,370 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 06:33:31,372 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 06:33:31,760 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 06:33:32,092 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 06:33:32,092 INFO L309 CfgBuilder]: Removed 16 assume(true) statements. [2023-11-29 06:33:32,093 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:33:32 BoogieIcfgContainer [2023-11-29 06:33:32,093 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 06:33:32,096 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 06:33:32,096 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 06:33:32,099 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 06:33:32,100 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 06:33:30" (1/3) ... [2023-11-29 06:33:32,100 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43860550 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:33:32, skipping insertion in model container [2023-11-29 06:33:32,100 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:33:30" (2/3) ... [2023-11-29 06:33:32,102 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43860550 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:33:32, skipping insertion in model container [2023-11-29 06:33:32,102 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:33:32" (3/3) ... [2023-11-29 06:33:32,106 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_92-evilcollapse_racing.i [2023-11-29 06:33:32,114 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-29 06:33:32,121 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 06:33:32,121 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2023-11-29 06:33:32,122 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 06:33:32,171 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-29 06:33:32,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 74 places, 87 transitions, 181 flow [2023-11-29 06:33:32,232 INFO L124 PetriNetUnfolderBase]: 16/91 cut-off events. [2023-11-29 06:33:32,232 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-29 06:33:32,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96 conditions, 91 events. 16/91 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 256 event pairs, 0 based on Foata normal form. 0/56 useless extension candidates. Maximal degree in co-relation 62. Up to 4 conditions per place. [2023-11-29 06:33:32,235 INFO L82 GeneralOperation]: Start removeDead. Operand has 74 places, 87 transitions, 181 flow [2023-11-29 06:33:32,239 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 74 places, 86 transitions, 179 flow [2023-11-29 06:33:32,248 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 06:33:32,255 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;@270ec38e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 06:33:32,255 INFO L358 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2023-11-29 06:33:32,260 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 06:33:32,260 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2023-11-29 06:33:32,260 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 06:33:32,261 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:33:32,261 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-29 06:33:32,261 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-29 06:33:32,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:33:32,266 INFO L85 PathProgramCache]: Analyzing trace with hash 22321454, now seen corresponding path program 1 times [2023-11-29 06:33:32,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:33:32,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709994649] [2023-11-29 06:33:32,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:33:32,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:33:32,374 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:33:32,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1921385534] [2023-11-29 06:33:32,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:33:32,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:33:32,376 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11132958-68b6-46ce-8a50-f82952e5dd1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:33:32,385 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11132958-68b6-46ce-8a50-f82952e5dd1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:33:32,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11132958-68b6-46ce-8a50-f82952e5dd1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 06:33:32,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:33:32,495 INFO L262 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 06:33:32,500 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:33:32,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:33:32,527 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:33:32,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:33:32,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709994649] [2023-11-29 06:33:32,528 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:33:32,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1921385534] [2023-11-29 06:33:32,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1921385534] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:33:32,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:33:32,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 06:33:32,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281424248] [2023-11-29 06:33:32,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:33:32,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:33:32,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:33:32,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:33:32,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:33:32,571 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 87 [2023-11-29 06:33:32,573 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 86 transitions, 179 flow. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:33:32,573 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:33:32,573 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 87 [2023-11-29 06:33:32,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:33:32,845 INFO L124 PetriNetUnfolderBase]: 150/479 cut-off events. [2023-11-29 06:33:32,845 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-29 06:33:32,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 799 conditions, 479 events. 150/479 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2277 event pairs, 126 based on Foata normal form. 43/436 useless extension candidates. Maximal degree in co-relation 729. Up to 310 conditions per place. [2023-11-29 06:33:32,852 INFO L140 encePairwiseOnDemand]: 72/87 looper letters, 44 selfloop transitions, 2 changer transitions 0/81 dead transitions. [2023-11-29 06:33:32,852 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 81 transitions, 261 flow [2023-11-29 06:33:32,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:33:32,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 06:33:32,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 164 transitions. [2023-11-29 06:33:32,863 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6283524904214559 [2023-11-29 06:33:32,864 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 164 transitions. [2023-11-29 06:33:32,864 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 164 transitions. [2023-11-29 06:33:32,866 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:33:32,868 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 164 transitions. [2023-11-29 06:33:32,870 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:33:32,875 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 87.0) internal successors, (348), 4 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:33:32,875 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 87.0) internal successors, (348), 4 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:33:32,877 INFO L175 Difference]: Start difference. First operand has 74 places, 86 transitions, 179 flow. Second operand 3 states and 164 transitions. [2023-11-29 06:33:32,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 81 transitions, 261 flow [2023-11-29 06:33:32,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 81 transitions, 261 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 06:33:32,885 INFO L231 Difference]: Finished difference. Result has 77 places, 77 transitions, 175 flow [2023-11-29 06:33:32,887 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=175, PETRI_PLACES=77, PETRI_TRANSITIONS=77} [2023-11-29 06:33:32,891 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 3 predicate places. [2023-11-29 06:33:32,891 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 77 transitions, 175 flow [2023-11-29 06:33:32,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:33:32,891 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:33:32,892 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-29 06:33:32,921 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11132958-68b6-46ce-8a50-f82952e5dd1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 06:33:33,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11132958-68b6-46ce-8a50-f82952e5dd1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-29 06:33:33,093 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-29 06:33:33,094 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:33:33,094 INFO L85 PathProgramCache]: Analyzing trace with hash 22321445, now seen corresponding path program 1 times [2023-11-29 06:33:33,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:33:33,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678630370] [2023-11-29 06:33:33,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:33:33,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:33:33,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:33:33,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:33:33,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:33:33,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678630370] [2023-11-29 06:33:33,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678630370] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:33:33,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:33:33,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:33:33,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572559653] [2023-11-29 06:33:33,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:33:33,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:33:33,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:33:33,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:33:33,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:33:33,235 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 87 [2023-11-29 06:33:33,235 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 77 transitions, 175 flow. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:33:33,235 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:33:33,235 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 87 [2023-11-29 06:33:33,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:33:33,468 INFO L124 PetriNetUnfolderBase]: 150/493 cut-off events. [2023-11-29 06:33:33,468 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-29 06:33:33,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 826 conditions, 493 events. 150/493 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2348 event pairs, 126 based on Foata normal form. 4/411 useless extension candidates. Maximal degree in co-relation 789. Up to 315 conditions per place. [2023-11-29 06:33:33,473 INFO L140 encePairwiseOnDemand]: 82/87 looper letters, 42 selfloop transitions, 2 changer transitions 0/79 dead transitions. [2023-11-29 06:33:33,473 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 79 transitions, 267 flow [2023-11-29 06:33:33,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:33:33,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 06:33:33,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 151 transitions. [2023-11-29 06:33:33,476 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.578544061302682 [2023-11-29 06:33:33,476 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 151 transitions. [2023-11-29 06:33:33,476 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 151 transitions. [2023-11-29 06:33:33,477 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:33:33,477 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 151 transitions. [2023-11-29 06:33:33,478 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:33:33,480 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 87.0) internal successors, (348), 4 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:33:33,480 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 87.0) internal successors, (348), 4 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:33:33,480 INFO L175 Difference]: Start difference. First operand has 77 places, 77 transitions, 175 flow. Second operand 3 states and 151 transitions. [2023-11-29 06:33:33,480 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 79 transitions, 267 flow [2023-11-29 06:33:33,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 79 transitions, 265 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 06:33:33,484 INFO L231 Difference]: Finished difference. Result has 79 places, 78 transitions, 189 flow [2023-11-29 06:33:33,484 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=173, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=189, PETRI_PLACES=79, PETRI_TRANSITIONS=78} [2023-11-29 06:33:33,485 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 5 predicate places. [2023-11-29 06:33:33,485 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 78 transitions, 189 flow [2023-11-29 06:33:33,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:33:33,485 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:33:33,485 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-29 06:33:33,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 06:33:33,486 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-29 06:33:33,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:33:33,486 INFO L85 PathProgramCache]: Analyzing trace with hash -23895042, now seen corresponding path program 1 times [2023-11-29 06:33:33,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:33:33,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004085650] [2023-11-29 06:33:33,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:33:33,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:33:33,530 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:33:33,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [28500583] [2023-11-29 06:33:33,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:33:33,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:33:33,531 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11132958-68b6-46ce-8a50-f82952e5dd1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:33:33,533 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11132958-68b6-46ce-8a50-f82952e5dd1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:33:33,541 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11132958-68b6-46ce-8a50-f82952e5dd1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 06:33:33,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:33:33,689 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 06:33:33,690 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:33:33,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:33:33,720 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:33:33,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:33:33,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004085650] [2023-11-29 06:33:33,721 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:33:33,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [28500583] [2023-11-29 06:33:33,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [28500583] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:33:33,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:33:33,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:33:33,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125784694] [2023-11-29 06:33:33,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:33:33,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 06:33:33,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:33:33,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 06:33:33,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 06:33:33,739 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 87 [2023-11-29 06:33:33,739 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 78 transitions, 189 flow. Second operand has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:33:33,739 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:33:33,740 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 87 [2023-11-29 06:33:33,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:33:33,962 INFO L124 PetriNetUnfolderBase]: 150/489 cut-off events. [2023-11-29 06:33:33,963 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2023-11-29 06:33:33,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 836 conditions, 489 events. 150/489 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2328 event pairs, 126 based on Foata normal form. 4/411 useless extension candidates. Maximal degree in co-relation 774. Up to 307 conditions per place. [2023-11-29 06:33:33,967 INFO L140 encePairwiseOnDemand]: 82/87 looper letters, 37 selfloop transitions, 5 changer transitions 0/77 dead transitions. [2023-11-29 06:33:33,967 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 77 transitions, 271 flow [2023-11-29 06:33:33,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 06:33:33,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 06:33:33,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 181 transitions. [2023-11-29 06:33:33,970 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5201149425287356 [2023-11-29 06:33:33,970 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 181 transitions. [2023-11-29 06:33:33,970 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 181 transitions. [2023-11-29 06:33:33,970 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:33:33,970 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 181 transitions. [2023-11-29 06:33:33,972 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 45.25) internal successors, (181), 4 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:33:33,973 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 87.0) internal successors, (435), 5 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:33:33,974 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 87.0) internal successors, (435), 5 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:33:33,974 INFO L175 Difference]: Start difference. First operand has 79 places, 78 transitions, 189 flow. Second operand 4 states and 181 transitions. [2023-11-29 06:33:33,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 77 transitions, 271 flow [2023-11-29 06:33:33,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 77 transitions, 269 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 06:33:33,978 INFO L231 Difference]: Finished difference. Result has 80 places, 77 transitions, 195 flow [2023-11-29 06:33:33,978 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=185, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=195, PETRI_PLACES=80, PETRI_TRANSITIONS=77} [2023-11-29 06:33:33,979 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 6 predicate places. [2023-11-29 06:33:33,979 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 77 transitions, 195 flow [2023-11-29 06:33:33,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:33:33,979 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:33:33,979 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:33:33,985 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11132958-68b6-46ce-8a50-f82952e5dd1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 06:33:34,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11132958-68b6-46ce-8a50-f82952e5dd1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:33:34,181 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-29 06:33:34,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:33:34,181 INFO L85 PathProgramCache]: Analyzing trace with hash -740745553, now seen corresponding path program 1 times [2023-11-29 06:33:34,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:33:34,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064727004] [2023-11-29 06:33:34,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:33:34,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:33:34,217 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:33:34,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [822580462] [2023-11-29 06:33:34,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:33:34,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:33:34,218 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11132958-68b6-46ce-8a50-f82952e5dd1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:33:34,219 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11132958-68b6-46ce-8a50-f82952e5dd1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:33:34,228 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11132958-68b6-46ce-8a50-f82952e5dd1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 06:33:34,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:33:34,401 INFO L262 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 06:33:34,402 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:33:34,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:33:34,419 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:33:34,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:33:34,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064727004] [2023-11-29 06:33:34,419 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:33:34,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [822580462] [2023-11-29 06:33:34,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [822580462] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:33:34,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:33:34,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:33:34,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498944541] [2023-11-29 06:33:34,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:33:34,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 06:33:34,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:33:34,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 06:33:34,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 06:33:34,440 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 87 [2023-11-29 06:33:34,440 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 77 transitions, 195 flow. Second operand has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:33:34,440 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:33:34,440 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 87 [2023-11-29 06:33:34,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:33:34,854 INFO L124 PetriNetUnfolderBase]: 150/487 cut-off events. [2023-11-29 06:33:34,855 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2023-11-29 06:33:34,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 842 conditions, 487 events. 150/487 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 2325 event pairs, 126 based on Foata normal form. 2/407 useless extension candidates. Maximal degree in co-relation 761. Up to 315 conditions per place. [2023-11-29 06:33:34,858 INFO L140 encePairwiseOnDemand]: 83/87 looper letters, 40 selfloop transitions, 3 changer transitions 0/78 dead transitions. [2023-11-29 06:33:34,859 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 78 transitions, 285 flow [2023-11-29 06:33:34,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 06:33:34,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 06:33:34,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 183 transitions. [2023-11-29 06:33:34,861 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5258620689655172 [2023-11-29 06:33:34,861 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 183 transitions. [2023-11-29 06:33:34,861 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 183 transitions. [2023-11-29 06:33:34,861 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:33:34,861 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 183 transitions. [2023-11-29 06:33:34,862 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 45.75) internal successors, (183), 4 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:33:34,864 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 87.0) internal successors, (435), 5 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:33:34,864 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 87.0) internal successors, (435), 5 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:33:34,864 INFO L175 Difference]: Start difference. First operand has 80 places, 77 transitions, 195 flow. Second operand 4 states and 183 transitions. [2023-11-29 06:33:34,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 78 transitions, 285 flow [2023-11-29 06:33:34,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 78 transitions, 273 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-29 06:33:34,868 INFO L231 Difference]: Finished difference. Result has 82 places, 78 transitions, 201 flow [2023-11-29 06:33:34,868 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=185, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=201, PETRI_PLACES=82, PETRI_TRANSITIONS=78} [2023-11-29 06:33:34,869 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 8 predicate places. [2023-11-29 06:33:34,869 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 78 transitions, 201 flow [2023-11-29 06:33:34,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:33:34,870 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:33:34,870 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:33:34,875 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11132958-68b6-46ce-8a50-f82952e5dd1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 06:33:35,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11132958-68b6-46ce-8a50-f82952e5dd1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:33:35,073 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-29 06:33:35,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:33:35,074 INFO L85 PathProgramCache]: Analyzing trace with hash 1108119026, now seen corresponding path program 1 times [2023-11-29 06:33:35,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:33:35,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415502069] [2023-11-29 06:33:35,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:33:35,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:33:35,133 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:33:35,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1964944974] [2023-11-29 06:33:35,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:33:35,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:33:35,134 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11132958-68b6-46ce-8a50-f82952e5dd1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:33:35,135 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11132958-68b6-46ce-8a50-f82952e5dd1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:33:35,145 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11132958-68b6-46ce-8a50-f82952e5dd1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 06:33:35,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:33:35,307 INFO L262 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 06:33:35,309 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:33:35,336 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:33:35,336 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:33:35,368 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:33:35,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:33:35,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415502069] [2023-11-29 06:33:35,368 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:33:35,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1964944974] [2023-11-29 06:33:35,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1964944974] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:33:35,369 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 06:33:35,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-11-29 06:33:35,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894694720] [2023-11-29 06:33:35,370 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 06:33:35,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 06:33:35,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:33:35,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 06:33:35,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-11-29 06:33:35,413 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 87 [2023-11-29 06:33:35,413 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 78 transitions, 201 flow. Second operand has 8 states, 8 states have (on average 35.375) internal successors, (283), 8 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:33:35,413 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:33:35,414 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 87 [2023-11-29 06:33:35,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:33:35,804 INFO L124 PetriNetUnfolderBase]: 150/501 cut-off events. [2023-11-29 06:33:35,805 INFO L125 PetriNetUnfolderBase]: For 37/37 co-relation queries the response was YES. [2023-11-29 06:33:35,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 880 conditions, 501 events. 150/501 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 2406 event pairs, 126 based on Foata normal form. 6/425 useless extension candidates. Maximal degree in co-relation 793. Up to 309 conditions per place. [2023-11-29 06:33:35,808 INFO L140 encePairwiseOnDemand]: 81/87 looper letters, 42 selfloop transitions, 7 changer transitions 0/83 dead transitions. [2023-11-29 06:33:35,808 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 83 transitions, 313 flow [2023-11-29 06:33:35,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 06:33:35,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 06:33:35,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 289 transitions. [2023-11-29 06:33:35,811 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4745484400656814 [2023-11-29 06:33:35,811 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 289 transitions. [2023-11-29 06:33:35,811 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 289 transitions. [2023-11-29 06:33:35,811 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:33:35,811 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 289 transitions. [2023-11-29 06:33:35,813 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 41.285714285714285) internal successors, (289), 7 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:33:35,815 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 87.0) internal successors, (696), 8 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:33:35,815 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 87.0) internal successors, (696), 8 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:33:35,815 INFO L175 Difference]: Start difference. First operand has 82 places, 78 transitions, 201 flow. Second operand 7 states and 289 transitions. [2023-11-29 06:33:35,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 83 transitions, 313 flow [2023-11-29 06:33:35,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 83 transitions, 309 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 06:33:35,819 INFO L231 Difference]: Finished difference. Result has 90 places, 81 transitions, 241 flow [2023-11-29 06:33:35,820 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=197, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=241, PETRI_PLACES=90, PETRI_TRANSITIONS=81} [2023-11-29 06:33:35,820 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 16 predicate places. [2023-11-29 06:33:35,820 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 81 transitions, 241 flow [2023-11-29 06:33:35,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 35.375) internal successors, (283), 8 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:33:35,821 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:33:35,821 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 1, 1, 1] [2023-11-29 06:33:35,826 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11132958-68b6-46ce-8a50-f82952e5dd1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 06:33:36,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11132958-68b6-46ce-8a50-f82952e5dd1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:33:36,025 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-29 06:33:36,025 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:33:36,025 INFO L85 PathProgramCache]: Analyzing trace with hash -1051020657, now seen corresponding path program 1 times [2023-11-29 06:33:36,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:33:36,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523434215] [2023-11-29 06:33:36,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:33:36,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:33:36,106 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:33:36,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1297717540] [2023-11-29 06:33:36,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:33:36,106 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:33:36,107 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11132958-68b6-46ce-8a50-f82952e5dd1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:33:36,108 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11132958-68b6-46ce-8a50-f82952e5dd1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:33:36,113 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11132958-68b6-46ce-8a50-f82952e5dd1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 06:33:36,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:33:36,349 INFO L262 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 06:33:36,351 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:33:36,413 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:33:36,414 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:33:36,512 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:33:36,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:33:36,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523434215] [2023-11-29 06:33:36,513 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:33:36,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1297717540] [2023-11-29 06:33:36,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1297717540] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:33:36,514 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 06:33:36,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2023-11-29 06:33:36,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654408901] [2023-11-29 06:33:36,514 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 06:33:36,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 06:33:36,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:33:36,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 06:33:36,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2023-11-29 06:33:36,566 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 87 [2023-11-29 06:33:36,567 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 81 transitions, 241 flow. Second operand has 14 states, 14 states have (on average 35.5) internal successors, (497), 14 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:33:36,567 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:33:36,567 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 87 [2023-11-29 06:33:36,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:33:37,075 INFO L124 PetriNetUnfolderBase]: 152/513 cut-off events. [2023-11-29 06:33:37,076 INFO L125 PetriNetUnfolderBase]: For 111/111 co-relation queries the response was YES. [2023-11-29 06:33:37,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 955 conditions, 513 events. 152/513 cut-off events. For 111/111 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2491 event pairs, 126 based on Foata normal form. 4/435 useless extension candidates. Maximal degree in co-relation 834. Up to 309 conditions per place. [2023-11-29 06:33:37,080 INFO L140 encePairwiseOnDemand]: 81/87 looper letters, 40 selfloop transitions, 12 changer transitions 0/86 dead transitions. [2023-11-29 06:33:37,080 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 86 transitions, 375 flow [2023-11-29 06:33:37,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 06:33:37,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-29 06:33:37,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 427 transitions. [2023-11-29 06:33:37,083 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44618599791013586 [2023-11-29 06:33:37,084 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 427 transitions. [2023-11-29 06:33:37,084 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 427 transitions. [2023-11-29 06:33:37,084 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:33:37,084 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 427 transitions. [2023-11-29 06:33:37,086 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 38.81818181818182) internal successors, (427), 11 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:33:37,088 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 87.0) internal successors, (1044), 12 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:33:37,088 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 87.0) internal successors, (1044), 12 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:33:37,089 INFO L175 Difference]: Start difference. First operand has 90 places, 81 transitions, 241 flow. Second operand 11 states and 427 transitions. [2023-11-29 06:33:37,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 86 transitions, 375 flow [2023-11-29 06:33:37,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 86 transitions, 363 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-11-29 06:33:37,095 INFO L231 Difference]: Finished difference. Result has 96 places, 84 transitions, 280 flow [2023-11-29 06:33:37,096 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=223, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=280, PETRI_PLACES=96, PETRI_TRANSITIONS=84} [2023-11-29 06:33:37,099 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 22 predicate places. [2023-11-29 06:33:37,100 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 84 transitions, 280 flow [2023-11-29 06:33:37,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 35.5) internal successors, (497), 14 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:33:37,100 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:33:37,100 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1] [2023-11-29 06:33:37,106 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11132958-68b6-46ce-8a50-f82952e5dd1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 06:33:37,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11132958-68b6-46ce-8a50-f82952e5dd1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-29 06:33:37,307 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-29 06:33:37,307 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:33:37,307 INFO L85 PathProgramCache]: Analyzing trace with hash -713512494, now seen corresponding path program 2 times [2023-11-29 06:33:37,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:33:37,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606130152] [2023-11-29 06:33:37,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:33:37,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:33:37,376 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:33:37,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [662184900] [2023-11-29 06:33:37,377 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 06:33:37,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:33:37,377 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11132958-68b6-46ce-8a50-f82952e5dd1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:33:37,378 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11132958-68b6-46ce-8a50-f82952e5dd1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:33:37,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11132958-68b6-46ce-8a50-f82952e5dd1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 06:33:37,566 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 06:33:37,566 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:33:37,567 INFO L262 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 06:33:37,569 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:33:37,603 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-29 06:33:37,603 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:33:37,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:33:37,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606130152] [2023-11-29 06:33:37,604 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:33:37,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [662184900] [2023-11-29 06:33:37,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [662184900] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:33:37,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:33:37,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 06:33:37,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174846309] [2023-11-29 06:33:37,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:33:37,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 06:33:37,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:33:37,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 06:33:37,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 06:33:37,615 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 87 [2023-11-29 06:33:37,615 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 84 transitions, 280 flow. Second operand has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:33:37,615 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:33:37,615 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 87 [2023-11-29 06:33:37,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:33:37,823 INFO L124 PetriNetUnfolderBase]: 152/511 cut-off events. [2023-11-29 06:33:37,823 INFO L125 PetriNetUnfolderBase]: For 131/131 co-relation queries the response was YES. [2023-11-29 06:33:37,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 963 conditions, 511 events. 152/511 cut-off events. For 131/131 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2476 event pairs, 126 based on Foata normal form. 2/433 useless extension candidates. Maximal degree in co-relation 888. Up to 302 conditions per place. [2023-11-29 06:33:37,827 INFO L140 encePairwiseOnDemand]: 82/87 looper letters, 42 selfloop transitions, 6 changer transitions 0/83 dead transitions. [2023-11-29 06:33:37,828 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 83 transitions, 374 flow [2023-11-29 06:33:37,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 06:33:37,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 06:33:37,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 181 transitions. [2023-11-29 06:33:37,829 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5201149425287356 [2023-11-29 06:33:37,830 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 181 transitions. [2023-11-29 06:33:37,830 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 181 transitions. [2023-11-29 06:33:37,830 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:33:37,830 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 181 transitions. [2023-11-29 06:33:37,831 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 45.25) internal successors, (181), 4 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:33:37,832 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 87.0) internal successors, (435), 5 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:33:37,832 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 87.0) internal successors, (435), 5 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:33:37,832 INFO L175 Difference]: Start difference. First operand has 96 places, 84 transitions, 280 flow. Second operand 4 states and 181 transitions. [2023-11-29 06:33:37,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 83 transitions, 374 flow [2023-11-29 06:33:37,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 83 transitions, 334 flow, removed 10 selfloop flow, removed 8 redundant places. [2023-11-29 06:33:37,838 INFO L231 Difference]: Finished difference. Result has 90 places, 83 transitions, 250 flow [2023-11-29 06:33:37,839 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=250, PETRI_PLACES=90, PETRI_TRANSITIONS=83} [2023-11-29 06:33:37,839 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 16 predicate places. [2023-11-29 06:33:37,839 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 83 transitions, 250 flow [2023-11-29 06:33:37,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:33:37,840 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:33:37,840 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1] [2023-11-29 06:33:37,845 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11132958-68b6-46ce-8a50-f82952e5dd1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 06:33:38,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11132958-68b6-46ce-8a50-f82952e5dd1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-29 06:33:38,045 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-29 06:33:38,045 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:33:38,046 INFO L85 PathProgramCache]: Analyzing trace with hash -644050090, now seen corresponding path program 1 times [2023-11-29 06:33:38,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:33:38,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157433024] [2023-11-29 06:33:38,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:33:38,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:33:38,104 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:33:38,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1768346115] [2023-11-29 06:33:38,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:33:38,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:33:38,105 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11132958-68b6-46ce-8a50-f82952e5dd1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:33:38,106 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11132958-68b6-46ce-8a50-f82952e5dd1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:33:38,109 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11132958-68b6-46ce-8a50-f82952e5dd1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 06:33:38,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:33:38,358 INFO L262 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 06:33:38,360 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:33:38,425 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:33:38,425 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:33:38,510 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:33:38,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:33:38,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157433024] [2023-11-29 06:33:38,510 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:33:38,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1768346115] [2023-11-29 06:33:38,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1768346115] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:33:38,511 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 06:33:38,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2023-11-29 06:33:38,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688836220] [2023-11-29 06:33:38,511 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 06:33:38,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 06:33:38,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:33:38,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 06:33:38,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2023-11-29 06:33:38,577 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 87 [2023-11-29 06:33:38,578 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 83 transitions, 250 flow. Second operand has 16 states, 16 states have (on average 35.4375) internal successors, (567), 16 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:33:38,578 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:33:38,578 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 87 [2023-11-29 06:33:38,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:33:39,222 INFO L124 PetriNetUnfolderBase]: 150/545 cut-off events. [2023-11-29 06:33:39,222 INFO L125 PetriNetUnfolderBase]: For 99/99 co-relation queries the response was YES. [2023-11-29 06:33:39,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1033 conditions, 545 events. 150/545 cut-off events. For 99/99 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2539 event pairs, 126 based on Foata normal form. 8/473 useless extension candidates. Maximal degree in co-relation 854. Up to 309 conditions per place. [2023-11-29 06:33:39,225 INFO L140 encePairwiseOnDemand]: 82/87 looper letters, 45 selfloop transitions, 15 changer transitions 0/93 dead transitions. [2023-11-29 06:33:39,225 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 93 transitions, 429 flow [2023-11-29 06:33:39,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 06:33:39,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-29 06:33:39,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 573 transitions. [2023-11-29 06:33:39,228 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43908045977011495 [2023-11-29 06:33:39,228 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 573 transitions. [2023-11-29 06:33:39,228 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 573 transitions. [2023-11-29 06:33:39,229 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:33:39,229 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 573 transitions. [2023-11-29 06:33:39,231 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 38.2) internal successors, (573), 15 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) [2023-11-29 06:33:39,234 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 87.0) internal successors, (1392), 16 states have internal predecessors, (1392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:33:39,234 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 87.0) internal successors, (1392), 16 states have internal predecessors, (1392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:33:39,235 INFO L175 Difference]: Start difference. First operand has 90 places, 83 transitions, 250 flow. Second operand 15 states and 573 transitions. [2023-11-29 06:33:39,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 93 transitions, 429 flow [2023-11-29 06:33:39,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 93 transitions, 408 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-29 06:33:39,238 INFO L231 Difference]: Finished difference. Result has 104 places, 89 transitions, 316 flow [2023-11-29 06:33:39,239 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=316, PETRI_PLACES=104, PETRI_TRANSITIONS=89} [2023-11-29 06:33:39,239 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 30 predicate places. [2023-11-29 06:33:39,240 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 89 transitions, 316 flow [2023-11-29 06:33:39,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 35.4375) internal successors, (567), 16 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:33:39,240 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:33:39,241 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 1, 1, 1, 1, 1] [2023-11-29 06:33:39,247 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11132958-68b6-46ce-8a50-f82952e5dd1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 06:33:39,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11132958-68b6-46ce-8a50-f82952e5dd1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:33:39,441 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-29 06:33:39,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:33:39,442 INFO L85 PathProgramCache]: Analyzing trace with hash 2052610966, now seen corresponding path program 2 times [2023-11-29 06:33:39,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:33:39,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12224310] [2023-11-29 06:33:39,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:33:39,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:33:39,561 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:33:39,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1594342382] [2023-11-29 06:33:39,562 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 06:33:39,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:33:39,562 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11132958-68b6-46ce-8a50-f82952e5dd1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:33:39,563 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11132958-68b6-46ce-8a50-f82952e5dd1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:33:39,567 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11132958-68b6-46ce-8a50-f82952e5dd1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 06:33:39,838 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 06:33:39,838 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:33:39,839 INFO L262 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 06:33:39,842 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:33:39,883 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-11-29 06:33:39,884 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:33:39,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:33:39,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12224310] [2023-11-29 06:33:39,884 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:33:39,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1594342382] [2023-11-29 06:33:39,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1594342382] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:33:39,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:33:39,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 06:33:39,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040100039] [2023-11-29 06:33:39,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:33:39,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 06:33:39,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:33:39,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 06:33:39,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 06:33:39,894 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 87 [2023-11-29 06:33:39,894 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 89 transitions, 316 flow. Second operand has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:33:39,894 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:33:39,894 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 87 [2023-11-29 06:33:39,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:33:40,147 INFO L124 PetriNetUnfolderBase]: 150/544 cut-off events. [2023-11-29 06:33:40,148 INFO L125 PetriNetUnfolderBase]: For 209/209 co-relation queries the response was YES. [2023-11-29 06:33:40,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1057 conditions, 544 events. 150/544 cut-off events. For 209/209 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2531 event pairs, 126 based on Foata normal form. 1/465 useless extension candidates. Maximal degree in co-relation 876. Up to 321 conditions per place. [2023-11-29 06:33:40,151 INFO L140 encePairwiseOnDemand]: 83/87 looper letters, 66 selfloop transitions, 3 changer transitions 0/105 dead transitions. [2023-11-29 06:33:40,151 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 105 transitions, 579 flow [2023-11-29 06:33:40,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 06:33:40,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 06:33:40,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 186 transitions. [2023-11-29 06:33:40,152 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5344827586206896 [2023-11-29 06:33:40,152 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 186 transitions. [2023-11-29 06:33:40,152 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 186 transitions. [2023-11-29 06:33:40,152 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:33:40,153 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 186 transitions. [2023-11-29 06:33:40,153 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 46.5) internal successors, (186), 4 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:33:40,154 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 87.0) internal successors, (435), 5 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:33:40,154 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 87.0) internal successors, (435), 5 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:33:40,154 INFO L175 Difference]: Start difference. First operand has 104 places, 89 transitions, 316 flow. Second operand 4 states and 186 transitions. [2023-11-29 06:33:40,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 105 transitions, 579 flow [2023-11-29 06:33:40,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 105 transitions, 555 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-29 06:33:40,157 INFO L231 Difference]: Finished difference. Result has 103 places, 90 transitions, 328 flow [2023-11-29 06:33:40,157 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=328, PETRI_PLACES=103, PETRI_TRANSITIONS=90} [2023-11-29 06:33:40,158 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 29 predicate places. [2023-11-29 06:33:40,158 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 90 transitions, 328 flow [2023-11-29 06:33:40,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:33:40,158 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:33:40,158 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:33:40,163 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11132958-68b6-46ce-8a50-f82952e5dd1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-29 06:33:40,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11132958-68b6-46ce-8a50-f82952e5dd1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:33:40,359 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-29 06:33:40,359 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:33:40,360 INFO L85 PathProgramCache]: Analyzing trace with hash -1387450820, now seen corresponding path program 1 times [2023-11-29 06:33:40,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:33:40,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816217829] [2023-11-29 06:33:40,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:33:40,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:33:40,474 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:33:40,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1055911280] [2023-11-29 06:33:40,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:33:40,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:33:40,474 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11132958-68b6-46ce-8a50-f82952e5dd1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:33:40,475 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11132958-68b6-46ce-8a50-f82952e5dd1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:33:40,476 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11132958-68b6-46ce-8a50-f82952e5dd1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 06:33:40,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:33:40,886 INFO L262 TraceCheckSpWp]: Trace formula consists of 793 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-29 06:33:40,890 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:33:41,030 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 1 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:33:41,030 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:33:41,276 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 1 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:33:41,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:33:41,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816217829] [2023-11-29 06:33:41,276 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:33:41,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1055911280] [2023-11-29 06:33:41,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1055911280] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:33:41,277 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 06:33:41,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32 [2023-11-29 06:33:41,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084374339] [2023-11-29 06:33:41,277 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 06:33:41,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-11-29 06:33:41,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:33:41,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-11-29 06:33:41,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=272, Invalid=720, Unknown=0, NotChecked=0, Total=992 [2023-11-29 06:33:41,379 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 87 [2023-11-29 06:33:41,381 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 90 transitions, 328 flow. Second operand has 32 states, 32 states have (on average 35.625) internal successors, (1140), 32 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:33:41,381 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:33:41,381 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 87 [2023-11-29 06:33:41,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:33:43,112 INFO L124 PetriNetUnfolderBase]: 150/640 cut-off events. [2023-11-29 06:33:43,113 INFO L125 PetriNetUnfolderBase]: For 568/568 co-relation queries the response was YES. [2023-11-29 06:33:43,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1422 conditions, 640 events. 150/640 cut-off events. For 568/568 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2578 event pairs, 126 based on Foata normal form. 16/576 useless extension candidates. Maximal degree in co-relation 1121. Up to 309 conditions per place. [2023-11-29 06:33:43,116 INFO L140 encePairwiseOnDemand]: 82/87 looper letters, 54 selfloop transitions, 31 changer transitions 0/118 dead transitions. [2023-11-29 06:33:43,116 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 118 transitions, 748 flow [2023-11-29 06:33:43,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-11-29 06:33:43,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2023-11-29 06:33:43,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 1145 transitions. [2023-11-29 06:33:43,121 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42454579162031886 [2023-11-29 06:33:43,122 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 1145 transitions. [2023-11-29 06:33:43,122 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 1145 transitions. [2023-11-29 06:33:43,122 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:33:43,123 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 1145 transitions. [2023-11-29 06:33:43,126 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 36.935483870967744) internal successors, (1145), 31 states have internal predecessors, (1145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:33:43,130 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 87.0) internal successors, (2784), 32 states have internal predecessors, (2784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:33:43,130 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 87.0) internal successors, (2784), 32 states have internal predecessors, (2784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:33:43,130 INFO L175 Difference]: Start difference. First operand has 103 places, 90 transitions, 328 flow. Second operand 31 states and 1145 transitions. [2023-11-29 06:33:43,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 118 transitions, 748 flow [2023-11-29 06:33:43,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 118 transitions, 744 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 06:33:43,135 INFO L231 Difference]: Finished difference. Result has 140 places, 107 transitions, 589 flow [2023-11-29 06:33:43,135 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=324, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=589, PETRI_PLACES=140, PETRI_TRANSITIONS=107} [2023-11-29 06:33:43,136 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 66 predicate places. [2023-11-29 06:33:43,136 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 107 transitions, 589 flow [2023-11-29 06:33:43,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 35.625) internal successors, (1140), 32 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:33:43,137 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:33:43,137 INFO L208 CegarLoopForPetriNet]: trace histogram [15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:33:43,143 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11132958-68b6-46ce-8a50-f82952e5dd1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-29 06:33:43,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11132958-68b6-46ce-8a50-f82952e5dd1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-29 06:33:43,338 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-29 06:33:43,338 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:33:43,338 INFO L85 PathProgramCache]: Analyzing trace with hash -1679569476, now seen corresponding path program 2 times [2023-11-29 06:33:43,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:33:43,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486858523] [2023-11-29 06:33:43,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:33:43,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:33:43,591 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:33:43,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [204587644] [2023-11-29 06:33:43,591 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 06:33:43,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:33:43,591 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11132958-68b6-46ce-8a50-f82952e5dd1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:33:43,592 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11132958-68b6-46ce-8a50-f82952e5dd1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:33:43,595 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11132958-68b6-46ce-8a50-f82952e5dd1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 06:33:44,078 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 06:33:44,078 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:33:44,080 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 06:33:44,083 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:33:44,097 INFO L134 CoverageAnalysis]: Checked inductivity of 541 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 541 trivial. 0 not checked. [2023-11-29 06:33:44,097 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:33:44,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:33:44,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486858523] [2023-11-29 06:33:44,097 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:33:44,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [204587644] [2023-11-29 06:33:44,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [204587644] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:33:44,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:33:44,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:33:44,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181751429] [2023-11-29 06:33:44,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:33:44,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 06:33:44,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:33:44,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 06:33:44,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 06:33:44,104 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 87 [2023-11-29 06:33:44,104 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 107 transitions, 589 flow. Second operand has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:33:44,104 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:33:44,104 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 87 [2023-11-29 06:33:44,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:33:44,360 INFO L124 PetriNetUnfolderBase]: 171/641 cut-off events. [2023-11-29 06:33:44,360 INFO L125 PetriNetUnfolderBase]: For 959/959 co-relation queries the response was YES. [2023-11-29 06:33:44,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1558 conditions, 641 events. 171/641 cut-off events. For 959/959 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2678 event pairs, 41 based on Foata normal form. 22/567 useless extension candidates. Maximal degree in co-relation 1207. Up to 208 conditions per place. [2023-11-29 06:33:44,363 INFO L140 encePairwiseOnDemand]: 82/87 looper letters, 112 selfloop transitions, 4 changer transitions 0/152 dead transitions. [2023-11-29 06:33:44,363 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 152 transitions, 911 flow [2023-11-29 06:33:44,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 06:33:44,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 06:33:44,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 227 transitions. [2023-11-29 06:33:44,365 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6522988505747126 [2023-11-29 06:33:44,365 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 227 transitions. [2023-11-29 06:33:44,365 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 227 transitions. [2023-11-29 06:33:44,365 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:33:44,365 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 227 transitions. [2023-11-29 06:33:44,366 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 56.75) internal successors, (227), 4 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:33:44,366 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 87.0) internal successors, (435), 5 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:33:44,366 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 87.0) internal successors, (435), 5 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:33:44,366 INFO L175 Difference]: Start difference. First operand has 140 places, 107 transitions, 589 flow. Second operand 4 states and 227 transitions. [2023-11-29 06:33:44,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 152 transitions, 911 flow [2023-11-29 06:33:44,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 152 transitions, 885 flow, removed 1 selfloop flow, removed 12 redundant places. [2023-11-29 06:33:44,374 INFO L231 Difference]: Finished difference. Result has 130 places, 106 transitions, 569 flow [2023-11-29 06:33:44,374 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=561, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=569, PETRI_PLACES=130, PETRI_TRANSITIONS=106} [2023-11-29 06:33:44,375 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 56 predicate places. [2023-11-29 06:33:44,375 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 106 transitions, 569 flow [2023-11-29 06:33:44,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:33:44,375 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:33:44,375 INFO L208 CegarLoopForPetriNet]: trace histogram [15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:33:44,381 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11132958-68b6-46ce-8a50-f82952e5dd1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-29 06:33:44,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11132958-68b6-46ce-8a50-f82952e5dd1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:33:44,575 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-29 06:33:44,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:33:44,576 INFO L85 PathProgramCache]: Analyzing trace with hash -527045497, now seen corresponding path program 1 times [2023-11-29 06:33:44,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:33:44,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165448288] [2023-11-29 06:33:44,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:33:44,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:33:44,810 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:33:44,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [769838478] [2023-11-29 06:33:44,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:33:44,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:33:44,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11132958-68b6-46ce-8a50-f82952e5dd1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:33:44,812 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11132958-68b6-46ce-8a50-f82952e5dd1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:33:44,812 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11132958-68b6-46ce-8a50-f82952e5dd1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 06:33:45,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:33:45,542 INFO L262 TraceCheckSpWp]: Trace formula consists of 1522 conjuncts, 32 conjunts are in the unsatisfiable core [2023-11-29 06:33:45,546 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:33:45,940 INFO L134 CoverageAnalysis]: Checked inductivity of 541 backedges. 1 proven. 540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:33:45,940 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:33:46,791 INFO L134 CoverageAnalysis]: Checked inductivity of 541 backedges. 1 proven. 540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:33:46,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:33:46,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165448288] [2023-11-29 06:33:46,792 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:33:46,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [769838478] [2023-11-29 06:33:46,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [769838478] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:33:46,792 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 06:33:46,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 61 [2023-11-29 06:33:46,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365461762] [2023-11-29 06:33:46,792 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 06:33:46,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2023-11-29 06:33:46,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:33:46,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2023-11-29 06:33:46,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=960, Invalid=2700, Unknown=0, NotChecked=0, Total=3660 [2023-11-29 06:33:46,959 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 87 [2023-11-29 06:33:46,962 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 106 transitions, 569 flow. Second operand has 61 states, 61 states have (on average 35.59016393442623) internal successors, (2171), 61 states have internal predecessors, (2171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:33:46,962 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:33:46,962 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 87 [2023-11-29 06:33:46,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:33:50,049 INFO L124 PetriNetUnfolderBase]: 150/817 cut-off events. [2023-11-29 06:33:50,049 INFO L125 PetriNetUnfolderBase]: For 3485/3485 co-relation queries the response was YES. [2023-11-29 06:33:50,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2394 conditions, 817 events. 150/817 cut-off events. For 3485/3485 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2640 event pairs, 126 based on Foata normal form. 30/793 useless extension candidates. Maximal degree in co-relation 1679. Up to 309 conditions per place. [2023-11-29 06:33:50,053 INFO L140 encePairwiseOnDemand]: 82/87 looper letters, 69 selfloop transitions, 61 changer transitions 0/162 dead transitions. [2023-11-29 06:33:50,054 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 162 transitions, 1516 flow [2023-11-29 06:33:50,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2023-11-29 06:33:50,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2023-11-29 06:33:50,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 2217 transitions. [2023-11-29 06:33:50,061 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4177501413227812 [2023-11-29 06:33:50,061 INFO L72 ComplementDD]: Start complementDD. Operand 61 states and 2217 transitions. [2023-11-29 06:33:50,061 INFO L73 IsDeterministic]: Start isDeterministic. Operand 61 states and 2217 transitions. [2023-11-29 06:33:50,063 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:33:50,063 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 61 states and 2217 transitions. [2023-11-29 06:33:50,069 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 62 states, 61 states have (on average 36.34426229508197) internal successors, (2217), 61 states have internal predecessors, (2217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:33:50,078 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 62 states, 62 states have (on average 87.0) internal successors, (5394), 62 states have internal predecessors, (5394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:33:50,080 INFO L81 ComplementDD]: Finished complementDD. Result has 62 states, 62 states have (on average 87.0) internal successors, (5394), 62 states have internal predecessors, (5394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:33:50,080 INFO L175 Difference]: Start difference. First operand has 130 places, 106 transitions, 569 flow. Second operand 61 states and 2217 transitions. [2023-11-29 06:33:50,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 162 transitions, 1516 flow [2023-11-29 06:33:50,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 162 transitions, 1508 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-29 06:33:50,095 INFO L231 Difference]: Finished difference. Result has 203 places, 137 transitions, 1141 flow [2023-11-29 06:33:50,095 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=561, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=61, PETRI_FLOW=1141, PETRI_PLACES=203, PETRI_TRANSITIONS=137} [2023-11-29 06:33:50,096 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 129 predicate places. [2023-11-29 06:33:50,096 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 137 transitions, 1141 flow [2023-11-29 06:33:50,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 35.59016393442623) internal successors, (2171), 61 states have internal predecessors, (2171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:33:50,097 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:33:50,098 INFO L208 CegarLoopForPetriNet]: trace histogram [30, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:33:50,106 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11132958-68b6-46ce-8a50-f82952e5dd1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-29 06:33:50,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11132958-68b6-46ce-8a50-f82952e5dd1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:33:50,301 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-29 06:33:50,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:33:50,301 INFO L85 PathProgramCache]: Analyzing trace with hash 559366964, now seen corresponding path program 2 times [2023-11-29 06:33:50,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:33:50,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259571696] [2023-11-29 06:33:50,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:33:50,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:33:50,713 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:33:50,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [700631200] [2023-11-29 06:33:50,714 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 06:33:50,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:33:50,714 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11132958-68b6-46ce-8a50-f82952e5dd1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:33:50,715 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11132958-68b6-46ce-8a50-f82952e5dd1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:33:50,716 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11132958-68b6-46ce-8a50-f82952e5dd1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-29 06:33:51,675 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 06:33:51,676 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:33:51,678 INFO L262 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 06:33:51,682 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:33:51,699 INFO L134 CoverageAnalysis]: Checked inductivity of 2206 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2206 trivial. 0 not checked. [2023-11-29 06:33:51,699 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:33:51,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:33:51,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259571696] [2023-11-29 06:33:51,700 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:33:51,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [700631200] [2023-11-29 06:33:51,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [700631200] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:33:51,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:33:51,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:33:51,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211159710] [2023-11-29 06:33:51,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:33:51,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 06:33:51,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:33:51,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 06:33:51,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 06:33:51,706 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 87 [2023-11-29 06:33:51,706 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 137 transitions, 1141 flow. Second operand has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:33:51,706 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:33:51,706 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 87 [2023-11-29 06:33:51,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:33:52,198 INFO L124 PetriNetUnfolderBase]: 144/735 cut-off events. [2023-11-29 06:33:52,198 INFO L125 PetriNetUnfolderBase]: For 3349/3349 co-relation queries the response was YES. [2023-11-29 06:33:52,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2412 conditions, 735 events. 144/735 cut-off events. For 3349/3349 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 2223 event pairs, 0 based on Foata normal form. 0/680 useless extension candidates. Maximal degree in co-relation 1712. Up to 355 conditions per place. [2023-11-29 06:33:52,203 INFO L140 encePairwiseOnDemand]: 82/87 looper letters, 143 selfloop transitions, 3 changer transitions 0/183 dead transitions. [2023-11-29 06:33:52,203 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 183 transitions, 1525 flow [2023-11-29 06:33:52,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 06:33:52,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 06:33:52,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 228 transitions. [2023-11-29 06:33:52,204 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6551724137931034 [2023-11-29 06:33:52,205 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 228 transitions. [2023-11-29 06:33:52,205 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 228 transitions. [2023-11-29 06:33:52,205 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:33:52,205 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 228 transitions. [2023-11-29 06:33:52,206 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:33:52,206 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 87.0) internal successors, (435), 5 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:33:52,206 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 87.0) internal successors, (435), 5 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:33:52,206 INFO L175 Difference]: Start difference. First operand has 203 places, 137 transitions, 1141 flow. Second operand 4 states and 228 transitions. [2023-11-29 06:33:52,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 183 transitions, 1525 flow [2023-11-29 06:33:52,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 183 transitions, 1467 flow, removed 1 selfloop flow, removed 28 redundant places. [2023-11-29 06:33:52,229 INFO L231 Difference]: Finished difference. Result has 178 places, 136 transitions, 1091 flow [2023-11-29 06:33:52,229 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=1081, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1091, PETRI_PLACES=178, PETRI_TRANSITIONS=136} [2023-11-29 06:33:52,230 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 104 predicate places. [2023-11-29 06:33:52,230 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 136 transitions, 1091 flow [2023-11-29 06:33:52,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:33:52,231 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:33:52,231 INFO L208 CegarLoopForPetriNet]: trace histogram [32, 31, 31, 31, 31, 2, 1, 1, 1, 1, 1] [2023-11-29 06:33:52,236 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11132958-68b6-46ce-8a50-f82952e5dd1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-29 06:33:52,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11132958-68b6-46ce-8a50-f82952e5dd1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-29 06:33:52,431 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-29 06:33:52,432 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:33:52,432 INFO L85 PathProgramCache]: Analyzing trace with hash 2110895784, now seen corresponding path program 1 times [2023-11-29 06:33:52,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:33:52,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641215171] [2023-11-29 06:33:52,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:33:52,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:33:52,833 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:33:52,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1380532331] [2023-11-29 06:33:52,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:33:52,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:33:52,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11132958-68b6-46ce-8a50-f82952e5dd1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:33:52,834 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11132958-68b6-46ce-8a50-f82952e5dd1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:33:52,835 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11132958-68b6-46ce-8a50-f82952e5dd1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-29 06:33:59,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:33:59,239 INFO L262 TraceCheckSpWp]: Trace formula consists of 2935 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 06:33:59,243 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:33:59,451 INFO L134 CoverageAnalysis]: Checked inductivity of 2420 backedges. 215 proven. 0 refuted. 0 times theorem prover too weak. 2205 trivial. 0 not checked. [2023-11-29 06:33:59,451 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:33:59,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:33:59,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641215171] [2023-11-29 06:33:59,451 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:33:59,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1380532331] [2023-11-29 06:33:59,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1380532331] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:33:59,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:33:59,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 06:33:59,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671561001] [2023-11-29 06:33:59,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:33:59,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 06:33:59,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:33:59,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 06:33:59,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-11-29 06:33:59,481 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 87 [2023-11-29 06:33:59,482 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 136 transitions, 1091 flow. Second operand has 8 states, 8 states have (on average 32.25) internal successors, (258), 8 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:33:59,482 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:33:59,482 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 87 [2023-11-29 06:33:59,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:34:00,331 INFO L124 PetriNetUnfolderBase]: 150/779 cut-off events. [2023-11-29 06:34:00,331 INFO L125 PetriNetUnfolderBase]: For 3251/3251 co-relation queries the response was YES. [2023-11-29 06:34:00,333 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2461 conditions, 779 events. 150/779 cut-off events. For 3251/3251 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2428 event pairs, 126 based on Foata normal form. 29/754 useless extension candidates. Maximal degree in co-relation 1679. Up to 299 conditions per place. [2023-11-29 06:34:00,336 INFO L140 encePairwiseOnDemand]: 79/87 looper letters, 95 selfloop transitions, 67 changer transitions 0/196 dead transitions. [2023-11-29 06:34:00,336 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 196 transitions, 2143 flow [2023-11-29 06:34:00,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 06:34:00,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 06:34:00,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 359 transitions. [2023-11-29 06:34:00,337 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4126436781609195 [2023-11-29 06:34:00,337 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 359 transitions. [2023-11-29 06:34:00,337 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 359 transitions. [2023-11-29 06:34:00,338 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:34:00,338 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 359 transitions. [2023-11-29 06:34:00,338 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 35.9) internal successors, (359), 10 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:34:00,339 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 87.0) internal successors, (957), 11 states have internal predecessors, (957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:34:00,339 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 87.0) internal successors, (957), 11 states have internal predecessors, (957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:34:00,339 INFO L175 Difference]: Start difference. First operand has 178 places, 136 transitions, 1091 flow. Second operand 10 states and 359 transitions. [2023-11-29 06:34:00,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 196 transitions, 2143 flow [2023-11-29 06:34:00,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 196 transitions, 2137 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-29 06:34:00,361 INFO L231 Difference]: Finished difference. Result has 188 places, 196 transitions, 2195 flow [2023-11-29 06:34:00,361 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=1079, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2195, PETRI_PLACES=188, PETRI_TRANSITIONS=196} [2023-11-29 06:34:00,362 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 114 predicate places. [2023-11-29 06:34:00,362 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 196 transitions, 2195 flow [2023-11-29 06:34:00,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 32.25) internal successors, (258), 8 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:34:00,362 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:34:00,362 INFO L208 CegarLoopForPetriNet]: trace histogram [30, 30, 30, 30, 30, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:34:00,387 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11132958-68b6-46ce-8a50-f82952e5dd1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-29 06:34:00,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11132958-68b6-46ce-8a50-f82952e5dd1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:34:00,563 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-29 06:34:00,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:34:00,563 INFO L85 PathProgramCache]: Analyzing trace with hash 680763275, now seen corresponding path program 1 times [2023-11-29 06:34:00,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:34:00,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777797991] [2023-11-29 06:34:00,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:34:00,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:34:00,921 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:34:00,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1031348293] [2023-11-29 06:34:00,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:34:00,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:34:00,921 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11132958-68b6-46ce-8a50-f82952e5dd1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:34:00,922 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11132958-68b6-46ce-8a50-f82952e5dd1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:34:00,924 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11132958-68b6-46ce-8a50-f82952e5dd1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-29 06:34:02,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:34:02,486 INFO L262 TraceCheckSpWp]: Trace formula consists of 2907 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 06:34:02,491 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:34:02,630 INFO L134 CoverageAnalysis]: Checked inductivity of 2208 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2207 trivial. 0 not checked. [2023-11-29 06:34:02,630 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:34:02,790 INFO L134 CoverageAnalysis]: Checked inductivity of 2208 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2207 trivial. 0 not checked. [2023-11-29 06:34:02,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:34:02,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777797991] [2023-11-29 06:34:02,790 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:34:02,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1031348293] [2023-11-29 06:34:02,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1031348293] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:34:02,790 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 06:34:02,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2023-11-29 06:34:02,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810567179] [2023-11-29 06:34:02,791 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 06:34:02,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 06:34:02,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:34:02,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 06:34:02,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-11-29 06:34:02,812 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 87 [2023-11-29 06:34:02,813 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 196 transitions, 2195 flow. Second operand has 8 states, 8 states have (on average 37.25) internal successors, (298), 8 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:34:02,813 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:34:02,813 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 87 [2023-11-29 06:34:02,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:34:03,491 INFO L124 PetriNetUnfolderBase]: 151/964 cut-off events. [2023-11-29 06:34:03,491 INFO L125 PetriNetUnfolderBase]: For 6646/6646 co-relation queries the response was YES. [2023-11-29 06:34:03,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3538 conditions, 964 events. 151/964 cut-off events. For 6646/6646 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 2177 event pairs, 126 based on Foata normal form. 3/913 useless extension candidates. Maximal degree in co-relation 2714. Up to 300 conditions per place. [2023-11-29 06:34:03,497 INFO L140 encePairwiseOnDemand]: 81/87 looper letters, 218 selfloop transitions, 7 changer transitions 0/260 dead transitions. [2023-11-29 06:34:03,497 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 260 transitions, 3707 flow [2023-11-29 06:34:03,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 06:34:03,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 06:34:03,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 299 transitions. [2023-11-29 06:34:03,499 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4909688013136289 [2023-11-29 06:34:03,499 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 299 transitions. [2023-11-29 06:34:03,499 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 299 transitions. [2023-11-29 06:34:03,499 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:34:03,500 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 299 transitions. [2023-11-29 06:34:03,501 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 42.714285714285715) internal successors, (299), 7 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:34:03,502 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 87.0) internal successors, (696), 8 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:34:03,502 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 87.0) internal successors, (696), 8 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:34:03,502 INFO L175 Difference]: Start difference. First operand has 188 places, 196 transitions, 2195 flow. Second operand 7 states and 299 transitions. [2023-11-29 06:34:03,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 260 transitions, 3707 flow [2023-11-29 06:34:03,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 260 transitions, 3689 flow, removed 5 selfloop flow, removed 4 redundant places. [2023-11-29 06:34:03,547 INFO L231 Difference]: Finished difference. Result has 194 places, 199 transitions, 2295 flow [2023-11-29 06:34:03,547 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=2181, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2295, PETRI_PLACES=194, PETRI_TRANSITIONS=199} [2023-11-29 06:34:03,548 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 120 predicate places. [2023-11-29 06:34:03,548 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 199 transitions, 2295 flow [2023-11-29 06:34:03,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 37.25) internal successors, (298), 8 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:34:03,548 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:34:03,549 INFO L208 CegarLoopForPetriNet]: trace histogram [32, 32, 31, 31, 31, 2, 1, 1, 1, 1, 1] [2023-11-29 06:34:03,559 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11132958-68b6-46ce-8a50-f82952e5dd1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-29 06:34:03,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11132958-68b6-46ce-8a50-f82952e5dd1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:34:03,749 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-29 06:34:03,749 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:34:03,749 INFO L85 PathProgramCache]: Analyzing trace with hash 1013260619, now seen corresponding path program 1 times [2023-11-29 06:34:03,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:34:03,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435669283] [2023-11-29 06:34:03,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:34:03,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:34:04,148 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:34:04,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2146893734] [2023-11-29 06:34:04,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:34:04,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:34:04,149 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11132958-68b6-46ce-8a50-f82952e5dd1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:34:04,150 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11132958-68b6-46ce-8a50-f82952e5dd1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:34:04,152 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11132958-68b6-46ce-8a50-f82952e5dd1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-29 06:34:07,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:34:07,437 INFO L262 TraceCheckSpWp]: Trace formula consists of 2936 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 06:34:07,441 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:34:07,634 INFO L134 CoverageAnalysis]: Checked inductivity of 2451 backedges. 0 proven. 246 refuted. 0 times theorem prover too weak. 2205 trivial. 0 not checked. [2023-11-29 06:34:07,635 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:34:07,864 INFO L134 CoverageAnalysis]: Checked inductivity of 2451 backedges. 0 proven. 246 refuted. 0 times theorem prover too weak. 2205 trivial. 0 not checked. [2023-11-29 06:34:07,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:34:07,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435669283] [2023-11-29 06:34:07,864 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:34:07,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2146893734] [2023-11-29 06:34:07,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2146893734] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:34:07,864 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 06:34:07,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2023-11-29 06:34:07,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509126192] [2023-11-29 06:34:07,865 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 06:34:07,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 06:34:07,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:34:07,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 06:34:07,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2023-11-29 06:34:07,928 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 87 [2023-11-29 06:34:07,929 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 199 transitions, 2295 flow. Second operand has 14 states, 14 states have (on average 31.857142857142858) internal successors, (446), 14 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:34:07,929 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:34:07,929 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 87 [2023-11-29 06:34:07,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:34:09,467 INFO L124 PetriNetUnfolderBase]: 151/933 cut-off events. [2023-11-29 06:34:09,467 INFO L125 PetriNetUnfolderBase]: For 6812/6812 co-relation queries the response was YES. [2023-11-29 06:34:09,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3576 conditions, 933 events. 151/933 cut-off events. For 6812/6812 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 2140 event pairs, 126 based on Foata normal form. 31/910 useless extension candidates. Maximal degree in co-relation 2750. Up to 299 conditions per place. [2023-11-29 06:34:09,473 INFO L140 encePairwiseOnDemand]: 77/87 looper letters, 111 selfloop transitions, 136 changer transitions 0/275 dead transitions. [2023-11-29 06:34:09,473 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 275 transitions, 3915 flow [2023-11-29 06:34:09,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-29 06:34:09,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-11-29 06:34:09,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 638 transitions. [2023-11-29 06:34:09,476 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38596491228070173 [2023-11-29 06:34:09,476 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 638 transitions. [2023-11-29 06:34:09,476 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 638 transitions. [2023-11-29 06:34:09,476 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:34:09,476 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 638 transitions. [2023-11-29 06:34:09,478 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 33.578947368421055) internal successors, (638), 19 states have internal predecessors, (638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:34:09,480 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 87.0) internal successors, (1740), 20 states have internal predecessors, (1740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:34:09,481 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 87.0) internal successors, (1740), 20 states have internal predecessors, (1740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:34:09,481 INFO L175 Difference]: Start difference. First operand has 194 places, 199 transitions, 2295 flow. Second operand 19 states and 638 transitions. [2023-11-29 06:34:09,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 275 transitions, 3915 flow [2023-11-29 06:34:09,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 275 transitions, 3907 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-29 06:34:09,539 INFO L231 Difference]: Finished difference. Result has 211 places, 265 transitions, 3751 flow [2023-11-29 06:34:09,539 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=2281, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=3751, PETRI_PLACES=211, PETRI_TRANSITIONS=265} [2023-11-29 06:34:09,540 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 137 predicate places. [2023-11-29 06:34:09,540 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 265 transitions, 3751 flow [2023-11-29 06:34:09,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 31.857142857142858) internal successors, (446), 14 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:34:09,540 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:34:09,540 INFO L208 CegarLoopForPetriNet]: trace histogram [63, 63, 62, 62, 62, 3, 2, 2, 2, 1, 1] [2023-11-29 06:34:09,561 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11132958-68b6-46ce-8a50-f82952e5dd1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-11-29 06:34:09,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11132958-68b6-46ce-8a50-f82952e5dd1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:34:09,741 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-29 06:34:09,741 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:34:09,741 INFO L85 PathProgramCache]: Analyzing trace with hash 493368063, now seen corresponding path program 2 times [2023-11-29 06:34:09,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:34:09,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47839487] [2023-11-29 06:34:09,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:34:09,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:34:10,677 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:34:10,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [76533872] [2023-11-29 06:34:10,677 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 06:34:10,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:34:10,678 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11132958-68b6-46ce-8a50-f82952e5dd1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:34:10,678 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11132958-68b6-46ce-8a50-f82952e5dd1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:34:10,682 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11132958-68b6-46ce-8a50-f82952e5dd1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-29 06:34:34,096 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 06:34:34,096 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:34:34,160 INFO L262 TraceCheckSpWp]: Trace formula consists of 5791 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 06:34:34,168 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:34:34,576 INFO L134 CoverageAnalysis]: Checked inductivity of 9773 backedges. 5356 proven. 0 refuted. 0 times theorem prover too weak. 4417 trivial. 0 not checked. [2023-11-29 06:34:34,576 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:34:34,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:34:34,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47839487] [2023-11-29 06:34:34,577 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:34:34,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [76533872] [2023-11-29 06:34:34,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [76533872] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:34:34,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:34:34,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 06:34:34,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220309423] [2023-11-29 06:34:34,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:34:34,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 06:34:34,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:34:34,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 06:34:34,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-11-29 06:34:34,651 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 87 [2023-11-29 06:34:34,652 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 265 transitions, 3751 flow. Second operand has 9 states, 9 states have (on average 34.111111111111114) internal successors, (307), 9 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:34:34,652 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:34:34,652 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 87 [2023-11-29 06:34:34,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:34:35,969 INFO L124 PetriNetUnfolderBase]: 151/905 cut-off events. [2023-11-29 06:34:35,969 INFO L125 PetriNetUnfolderBase]: For 8640/8640 co-relation queries the response was YES. [2023-11-29 06:34:35,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3775 conditions, 905 events. 151/905 cut-off events. For 8640/8640 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 2110 event pairs, 126 based on Foata normal form. 28/879 useless extension candidates. Maximal degree in co-relation 2946. Up to 299 conditions per place. [2023-11-29 06:34:35,976 INFO L140 encePairwiseOnDemand]: 79/87 looper letters, 198 selfloop transitions, 46 changer transitions 0/272 dead transitions. [2023-11-29 06:34:35,977 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 272 transitions, 4319 flow [2023-11-29 06:34:35,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 06:34:35,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 06:34:35,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 374 transitions. [2023-11-29 06:34:35,978 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4298850574712644 [2023-11-29 06:34:35,978 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 374 transitions. [2023-11-29 06:34:35,978 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 374 transitions. [2023-11-29 06:34:35,978 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:34:35,978 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 374 transitions. [2023-11-29 06:34:35,979 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 37.4) internal successors, (374), 10 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) [2023-11-29 06:34:35,981 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 87.0) internal successors, (957), 11 states have internal predecessors, (957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:34:35,981 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 87.0) internal successors, (957), 11 states have internal predecessors, (957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:34:35,981 INFO L175 Difference]: Start difference. First operand has 211 places, 265 transitions, 3751 flow. Second operand 10 states and 374 transitions. [2023-11-29 06:34:35,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 272 transitions, 4319 flow [2023-11-29 06:34:36,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 272 transitions, 4177 flow, removed 3 selfloop flow, removed 15 redundant places. [2023-11-29 06:34:36,033 INFO L231 Difference]: Finished difference. Result has 205 places, 270 transitions, 3818 flow [2023-11-29 06:34:36,033 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=3597, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3818, PETRI_PLACES=205, PETRI_TRANSITIONS=270} [2023-11-29 06:34:36,034 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 131 predicate places. [2023-11-29 06:34:36,034 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 270 transitions, 3818 flow [2023-11-29 06:34:36,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 34.111111111111114) internal successors, (307), 9 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:34:36,034 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:34:36,034 INFO L208 CegarLoopForPetriNet]: trace histogram [90, 90, 90, 90, 90, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:34:36,093 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11132958-68b6-46ce-8a50-f82952e5dd1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-11-29 06:34:36,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11132958-68b6-46ce-8a50-f82952e5dd1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:34:36,235 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-29 06:34:36,235 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:34:36,235 INFO L85 PathProgramCache]: Analyzing trace with hash 1735837221, now seen corresponding path program 2 times [2023-11-29 06:34:36,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:34:36,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343590552] [2023-11-29 06:34:36,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:34:36,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:34:37,659 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:34:37,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [940838008] [2023-11-29 06:34:37,660 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 06:34:37,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:34:37,660 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11132958-68b6-46ce-8a50-f82952e5dd1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:34:37,661 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11132958-68b6-46ce-8a50-f82952e5dd1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:34:37,663 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11132958-68b6-46ce-8a50-f82952e5dd1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-29 06:34:41,635 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 06:34:41,636 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:34:41,692 INFO L262 TraceCheckSpWp]: Trace formula consists of 8435 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 06:34:41,701 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:34:42,164 INFO L134 CoverageAnalysis]: Checked inductivity of 20312 backedges. 0 proven. 13695 refuted. 0 times theorem prover too weak. 6617 trivial. 0 not checked. [2023-11-29 06:34:42,164 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:34:42,679 INFO L134 CoverageAnalysis]: Checked inductivity of 20312 backedges. 0 proven. 13695 refuted. 0 times theorem prover too weak. 6617 trivial. 0 not checked. [2023-11-29 06:34:42,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:34:42,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343590552] [2023-11-29 06:34:42,679 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:34:42,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [940838008] [2023-11-29 06:34:42,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [940838008] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:34:42,679 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 06:34:42,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2023-11-29 06:34:42,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823764698] [2023-11-29 06:34:42,680 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 06:34:42,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 06:34:42,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:34:42,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 06:34:42,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2023-11-29 06:34:42,779 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 87 [2023-11-29 06:34:42,779 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 270 transitions, 3818 flow. Second operand has 16 states, 16 states have (on average 37.375) internal successors, (598), 16 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:34:42,779 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:34:42,779 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 87 [2023-11-29 06:34:42,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:34:44,722 INFO L124 PetriNetUnfolderBase]: 155/1525 cut-off events. [2023-11-29 06:34:44,722 INFO L125 PetriNetUnfolderBase]: For 22710/22710 co-relation queries the response was YES. [2023-11-29 06:34:44,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7907 conditions, 1525 events. 155/1525 cut-off events. For 22710/22710 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 2114 event pairs, 126 based on Foata normal form. 4/1475 useless extension candidates. Maximal degree in co-relation 7082. Up to 336 conditions per place. [2023-11-29 06:34:44,731 INFO L140 encePairwiseOnDemand]: 82/87 looper letters, 461 selfloop transitions, 15 changer transitions 0/522 dead transitions. [2023-11-29 06:34:44,731 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 522 transitions, 9814 flow [2023-11-29 06:34:44,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 06:34:44,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-29 06:34:44,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 599 transitions. [2023-11-29 06:34:44,733 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4590038314176245 [2023-11-29 06:34:44,733 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 599 transitions. [2023-11-29 06:34:44,733 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 599 transitions. [2023-11-29 06:34:44,733 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:34:44,733 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 599 transitions. [2023-11-29 06:34:44,735 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 39.93333333333333) internal successors, (599), 15 states have internal predecessors, (599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:34:44,736 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 87.0) internal successors, (1392), 16 states have internal predecessors, (1392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:34:44,737 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 87.0) internal successors, (1392), 16 states have internal predecessors, (1392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:34:44,737 INFO L175 Difference]: Start difference. First operand has 205 places, 270 transitions, 3818 flow. Second operand 15 states and 599 transitions. [2023-11-29 06:34:44,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 522 transitions, 9814 flow [2023-11-29 06:34:44,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 522 transitions, 9769 flow, removed 6 selfloop flow, removed 7 redundant places. [2023-11-29 06:34:44,840 INFO L231 Difference]: Finished difference. Result has 217 places, 279 transitions, 4142 flow [2023-11-29 06:34:44,840 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=3789, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=4142, PETRI_PLACES=217, PETRI_TRANSITIONS=279} [2023-11-29 06:34:44,840 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 143 predicate places. [2023-11-29 06:34:44,841 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 279 transitions, 4142 flow [2023-11-29 06:34:44,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 37.375) internal successors, (598), 16 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:34:44,841 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:34:44,841 INFO L208 CegarLoopForPetriNet]: trace histogram [210, 210, 210, 210, 210, 7, 7, 7, 7, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:34:44,864 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11132958-68b6-46ce-8a50-f82952e5dd1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-11-29 06:34:45,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11132958-68b6-46ce-8a50-f82952e5dd1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:34:45,042 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-29 06:34:45,042 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:34:45,042 INFO L85 PathProgramCache]: Analyzing trace with hash -424073127, now seen corresponding path program 3 times [2023-11-29 06:34:45,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:34:45,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695918685] [2023-11-29 06:34:45,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:34:45,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:34:48,272 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:34:48,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1790196671] [2023-11-29 06:34:48,272 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 06:34:48,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:34:48,273 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11132958-68b6-46ce-8a50-f82952e5dd1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:34:48,273 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11132958-68b6-46ce-8a50-f82952e5dd1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:34:48,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11132958-68b6-46ce-8a50-f82952e5dd1b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process