./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_75-tricky_address2_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfe7f0c-9a15-4d6b-941c-7ba06782f675/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfe7f0c-9a15-4d6b-941c-7ba06782f675/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_0cfe7f0c-9a15-4d6b-941c-7ba06782f675/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfe7f0c-9a15-4d6b-941c-7ba06782f675/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_75-tricky_address2_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfe7f0c-9a15-4d6b-941c-7ba06782f675/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_0cfe7f0c-9a15-4d6b-941c-7ba06782f675/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 3c0354ee6107efc04d15102ecf9eef73430e38e14b70f16419cd07cd733fd0df --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 06:01:26,016 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 06:01:26,079 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfe7f0c-9a15-4d6b-941c-7ba06782f675/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-29 06:01:26,083 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 06:01:26,084 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 06:01:26,106 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 06:01:26,107 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 06:01:26,108 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 06:01:26,108 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 06:01:26,109 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 06:01:26,109 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 06:01:26,110 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 06:01:26,110 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 06:01:26,111 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 06:01:26,111 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 06:01:26,112 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 06:01:26,113 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 06:01:26,113 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 06:01:26,113 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 06:01:26,114 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 06:01:26,114 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 06:01:26,115 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 06:01:26,115 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 06:01:26,115 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 06:01:26,116 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-29 06:01:26,116 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 06:01:26,116 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 06:01:26,117 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 06:01:26,117 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 06:01:26,118 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 06:01:26,118 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 06:01:26,118 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 06:01:26,119 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 06:01:26,119 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 06:01:26,119 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 06:01:26,119 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 06:01:26,119 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 06:01:26,120 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 06:01:26,120 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 06:01:26,120 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 06:01:26,120 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 06:01:26,121 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 06:01:26,121 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 06:01:26,121 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 06:01:26,121 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_0cfe7f0c-9a15-4d6b-941c-7ba06782f675/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfe7f0c-9a15-4d6b-941c-7ba06782f675/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3c0354ee6107efc04d15102ecf9eef73430e38e14b70f16419cd07cd733fd0df [2023-11-29 06:01:26,341 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 06:01:26,362 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 06:01:26,364 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 06:01:26,365 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 06:01:26,366 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 06:01:26,366 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfe7f0c-9a15-4d6b-941c-7ba06782f675/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/goblint-regression/28-race_reach_75-tricky_address2_racefree.i [2023-11-29 06:01:29,172 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 06:01:29,403 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 06:01:29,403 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfe7f0c-9a15-4d6b-941c-7ba06782f675/sv-benchmarks/c/goblint-regression/28-race_reach_75-tricky_address2_racefree.i [2023-11-29 06:01:29,421 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfe7f0c-9a15-4d6b-941c-7ba06782f675/bin/uautomizer-verify-BQ2R08f2Ya/data/67be736cb/ed021ccb710b45478ce2622b6719dece/FLAGd074fcc04 [2023-11-29 06:01:29,435 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfe7f0c-9a15-4d6b-941c-7ba06782f675/bin/uautomizer-verify-BQ2R08f2Ya/data/67be736cb/ed021ccb710b45478ce2622b6719dece [2023-11-29 06:01:29,438 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 06:01:29,439 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 06:01:29,440 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 06:01:29,441 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 06:01:29,446 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 06:01:29,446 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:01:29" (1/1) ... [2023-11-29 06:01:29,447 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7165c2d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:01:29, skipping insertion in model container [2023-11-29 06:01:29,447 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:01:29" (1/1) ... [2023-11-29 06:01:29,512 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 06:01:29,907 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 06:01:29,926 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 06:01:29,980 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 06:01:30,048 INFO L206 MainTranslator]: Completed translation [2023-11-29 06:01:30,048 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:01:30 WrapperNode [2023-11-29 06:01:30,049 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 06:01:30,050 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 06:01:30,050 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 06:01:30,050 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 06:01:30,058 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:01:30" (1/1) ... [2023-11-29 06:01:30,077 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:01:30" (1/1) ... [2023-11-29 06:01:30,107 INFO L138 Inliner]: procedures = 271, calls = 50, calls flagged for inlining = 7, calls inlined = 8, statements flattened = 236 [2023-11-29 06:01:30,108 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 06:01:30,108 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 06:01:30,109 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 06:01:30,109 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 06:01:30,120 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:01:30" (1/1) ... [2023-11-29 06:01:30,120 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:01:30" (1/1) ... [2023-11-29 06:01:30,125 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:01:30" (1/1) ... [2023-11-29 06:01:30,141 INFO L175 MemorySlicer]: Split 20 memory accesses to 4 slices as follows [2, 5, 2, 11]. 55 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5, 0, 0]. The 6 writes are split as follows [0, 0, 1, 5]. [2023-11-29 06:01:30,142 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:01:30" (1/1) ... [2023-11-29 06:01:30,142 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:01:30" (1/1) ... [2023-11-29 06:01:30,152 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:01:30" (1/1) ... [2023-11-29 06:01:30,157 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:01:30" (1/1) ... [2023-11-29 06:01:30,160 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:01:30" (1/1) ... [2023-11-29 06:01:30,162 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:01:30" (1/1) ... [2023-11-29 06:01:30,166 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 06:01:30,167 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 06:01:30,167 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 06:01:30,167 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 06:01:30,168 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:01:30" (1/1) ... [2023-11-29 06:01:30,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 06:01:30,185 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfe7f0c-9a15-4d6b-941c-7ba06782f675/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:01:30,203 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfe7f0c-9a15-4d6b-941c-7ba06782f675/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 06:01:30,215 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfe7f0c-9a15-4d6b-941c-7ba06782f675/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 06:01:30,246 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 06:01:30,246 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 06:01:30,246 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-29 06:01:30,247 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-29 06:01:30,247 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-29 06:01:30,247 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-29 06:01:30,247 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-29 06:01:30,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 06:01:30,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-29 06:01:30,248 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-29 06:01:30,248 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-29 06:01:30,248 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-29 06:01:30,248 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 06:01:30,248 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-29 06:01:30,249 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-29 06:01:30,249 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 06:01:30,249 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 06:01:30,249 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 06:01:30,249 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-29 06:01:30,250 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 06:01:30,250 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 06:01:30,252 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 06:01:30,401 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 06:01:30,403 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 06:01:30,693 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 06:01:30,860 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 06:01:30,860 INFO L309 CfgBuilder]: Removed 23 assume(true) statements. [2023-11-29 06:01:30,861 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:01:30 BoogieIcfgContainer [2023-11-29 06:01:30,861 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 06:01:30,863 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 06:01:30,863 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 06:01:30,866 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 06:01:30,867 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 06:01:29" (1/3) ... [2023-11-29 06:01:30,867 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ef0cec0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:01:30, skipping insertion in model container [2023-11-29 06:01:30,867 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:01:30" (2/3) ... [2023-11-29 06:01:30,868 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ef0cec0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:01:30, skipping insertion in model container [2023-11-29 06:01:30,868 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:01:30" (3/3) ... [2023-11-29 06:01:30,869 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_75-tricky_address2_racefree.i [2023-11-29 06:01:30,877 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-29 06:01:30,887 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 06:01:30,888 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2023-11-29 06:01:30,888 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 06:01:30,934 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-29 06:01:30,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 90 places, 111 transitions, 229 flow [2023-11-29 06:01:31,021 INFO L124 PetriNetUnfolderBase]: 35/158 cut-off events. [2023-11-29 06:01:31,021 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-29 06:01:31,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 163 conditions, 158 events. 35/158 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 600 event pairs, 0 based on Foata normal form. 0/102 useless extension candidates. Maximal degree in co-relation 96. Up to 8 conditions per place. [2023-11-29 06:01:31,026 INFO L82 GeneralOperation]: Start removeDead. Operand has 90 places, 111 transitions, 229 flow [2023-11-29 06:01:31,032 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 90 places, 110 transitions, 227 flow [2023-11-29 06:01:31,040 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 06:01:31,045 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;@5c840992, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 06:01:31,045 INFO L358 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2023-11-29 06:01:31,048 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 06:01:31,048 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2023-11-29 06:01:31,049 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 06:01:31,049 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:01:31,050 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-29 06:01:31,050 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-29 06:01:31,055 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:01:31,055 INFO L85 PathProgramCache]: Analyzing trace with hash 648496, now seen corresponding path program 1 times [2023-11-29 06:01:31,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:01:31,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069950620] [2023-11-29 06:01:31,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:01:31,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:01:31,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:01:31,277 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 06:01:31,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:01:31,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069950620] [2023-11-29 06:01:31,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069950620] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:01:31,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:01:31,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 06:01:31,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544334641] [2023-11-29 06:01:31,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:01:31,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 06:01:31,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:01:31,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 06:01:31,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 06:01:31,319 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 111 [2023-11-29 06:01:31,322 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 110 transitions, 227 flow. Second operand has 4 states, 4 states have (on average 40.75) internal successors, (163), 4 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:01:31,322 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:01:31,322 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 111 [2023-11-29 06:01:31,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:01:31,700 INFO L124 PetriNetUnfolderBase]: 459/1440 cut-off events. [2023-11-29 06:01:31,700 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-29 06:01:31,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2366 conditions, 1440 events. 459/1440 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 9635 event pairs, 414 based on Foata normal form. 275/1544 useless extension candidates. Maximal degree in co-relation 2273. Up to 919 conditions per place. [2023-11-29 06:01:31,714 INFO L140 encePairwiseOnDemand]: 85/111 looper letters, 49 selfloop transitions, 3 changer transitions 0/92 dead transitions. [2023-11-29 06:01:31,715 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 92 transitions, 295 flow [2023-11-29 06:01:31,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 06:01:31,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 06:01:31,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 235 transitions. [2023-11-29 06:01:31,729 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5292792792792793 [2023-11-29 06:01:31,729 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 235 transitions. [2023-11-29 06:01:31,730 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 235 transitions. [2023-11-29 06:01:31,731 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:01:31,734 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 235 transitions. [2023-11-29 06:01:31,737 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 58.75) internal successors, (235), 4 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:01:31,741 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 111.0) internal successors, (555), 5 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:01:31,742 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 111.0) internal successors, (555), 5 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:01:31,744 INFO L175 Difference]: Start difference. First operand has 90 places, 110 transitions, 227 flow. Second operand 4 states and 235 transitions. [2023-11-29 06:01:31,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 92 transitions, 295 flow [2023-11-29 06:01:31,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 92 transitions, 295 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 06:01:31,752 INFO L231 Difference]: Finished difference. Result has 95 places, 92 transitions, 211 flow [2023-11-29 06:01:31,754 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=187, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=211, PETRI_PLACES=95, PETRI_TRANSITIONS=92} [2023-11-29 06:01:31,758 INFO L281 CegarLoopForPetriNet]: 90 programPoint places, 5 predicate places. [2023-11-29 06:01:31,758 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 92 transitions, 211 flow [2023-11-29 06:01:31,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.75) internal successors, (163), 4 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:01:31,758 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:01:31,759 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-29 06:01:31,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 06:01:31,759 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-29 06:01:31,760 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:01:31,760 INFO L85 PathProgramCache]: Analyzing trace with hash 2140125570, now seen corresponding path program 1 times [2023-11-29 06:01:31,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:01:31,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390315194] [2023-11-29 06:01:31,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:01:31,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:01:31,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:01:31,865 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:01:31,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:01:31,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390315194] [2023-11-29 06:01:31,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390315194] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:01:31,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1987388238] [2023-11-29 06:01:31,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:01:31,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:01:31,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfe7f0c-9a15-4d6b-941c-7ba06782f675/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:01:31,870 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfe7f0c-9a15-4d6b-941c-7ba06782f675/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:01:31,871 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfe7f0c-9a15-4d6b-941c-7ba06782f675/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 06:01:31,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:01:31,952 INFO L262 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 06:01:31,956 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:01:31,998 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:01:31,998 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:01:31,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1987388238] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:01:31,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 06:01:31,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-11-29 06:01:32,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875177602] [2023-11-29 06:01:32,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:01:32,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 06:01:32,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:01:32,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 06:01:32,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-29 06:01:32,009 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 111 [2023-11-29 06:01:32,010 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 92 transitions, 211 flow. Second operand has 6 states, 6 states have (on average 40.833333333333336) internal successors, (245), 6 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:01:32,010 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:01:32,011 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 111 [2023-11-29 06:01:32,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:01:32,321 INFO L124 PetriNetUnfolderBase]: 459/1439 cut-off events. [2023-11-29 06:01:32,321 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-29 06:01:32,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2376 conditions, 1439 events. 459/1439 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 9630 event pairs, 414 based on Foata normal form. 1/1269 useless extension candidates. Maximal degree in co-relation 2358. Up to 914 conditions per place. [2023-11-29 06:01:32,333 INFO L140 encePairwiseOnDemand]: 106/111 looper letters, 45 selfloop transitions, 6 changer transitions 0/91 dead transitions. [2023-11-29 06:01:32,333 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 91 transitions, 309 flow [2023-11-29 06:01:32,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 06:01:32,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 06:01:32,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 292 transitions. [2023-11-29 06:01:32,336 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43843843843843844 [2023-11-29 06:01:32,336 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 292 transitions. [2023-11-29 06:01:32,337 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 292 transitions. [2023-11-29 06:01:32,337 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:01:32,337 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 292 transitions. [2023-11-29 06:01:32,339 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 48.666666666666664) internal successors, (292), 6 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:01:32,342 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 111.0) internal successors, (777), 7 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:01:32,343 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 111.0) internal successors, (777), 7 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:01:32,343 INFO L175 Difference]: Start difference. First operand has 95 places, 92 transitions, 211 flow. Second operand 6 states and 292 transitions. [2023-11-29 06:01:32,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 91 transitions, 309 flow [2023-11-29 06:01:32,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 91 transitions, 307 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 06:01:32,348 INFO L231 Difference]: Finished difference. Result has 98 places, 91 transitions, 217 flow [2023-11-29 06:01:32,348 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=205, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=217, PETRI_PLACES=98, PETRI_TRANSITIONS=91} [2023-11-29 06:01:32,349 INFO L281 CegarLoopForPetriNet]: 90 programPoint places, 8 predicate places. [2023-11-29 06:01:32,349 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 91 transitions, 217 flow [2023-11-29 06:01:32,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 40.833333333333336) internal successors, (245), 6 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:01:32,350 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:01:32,350 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2023-11-29 06:01:32,356 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfe7f0c-9a15-4d6b-941c-7ba06782f675/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 06:01:32,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfe7f0c-9a15-4d6b-941c-7ba06782f675/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:01:32,551 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-29 06:01:32,552 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:01:32,552 INFO L85 PathProgramCache]: Analyzing trace with hash 1919383886, now seen corresponding path program 1 times [2023-11-29 06:01:32,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:01:32,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178699442] [2023-11-29 06:01:32,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:01:32,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:01:32,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:01:32,602 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 06:01:32,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:01:32,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178699442] [2023-11-29 06:01:32,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178699442] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:01:32,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:01:32,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 06:01:32,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566917084] [2023-11-29 06:01:32,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:01:32,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:01:32,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:01:32,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:01:32,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:01:32,610 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 111 [2023-11-29 06:01:32,610 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 91 transitions, 217 flow. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:01:32,611 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:01:32,611 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 111 [2023-11-29 06:01:32,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:01:32,863 INFO L124 PetriNetUnfolderBase]: 459/1438 cut-off events. [2023-11-29 06:01:32,863 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-11-29 06:01:32,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2378 conditions, 1438 events. 459/1438 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 9649 event pairs, 414 based on Foata normal form. 1/1269 useless extension candidates. Maximal degree in co-relation 2354. Up to 917 conditions per place. [2023-11-29 06:01:32,872 INFO L140 encePairwiseOnDemand]: 108/111 looper letters, 46 selfloop transitions, 4 changer transitions 0/90 dead transitions. [2023-11-29 06:01:32,872 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 90 transitions, 313 flow [2023-11-29 06:01:32,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:01:32,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 06:01:32,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 169 transitions. [2023-11-29 06:01:32,874 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5075075075075075 [2023-11-29 06:01:32,874 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 169 transitions. [2023-11-29 06:01:32,874 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 169 transitions. [2023-11-29 06:01:32,875 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:01:32,875 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 169 transitions. [2023-11-29 06:01:32,875 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:01:32,877 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 111.0) internal successors, (444), 4 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:01:32,877 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 111.0) internal successors, (444), 4 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:01:32,877 INFO L175 Difference]: Start difference. First operand has 98 places, 91 transitions, 217 flow. Second operand 3 states and 169 transitions. [2023-11-29 06:01:32,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 90 transitions, 313 flow [2023-11-29 06:01:32,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 90 transitions, 291 flow, removed 3 selfloop flow, removed 6 redundant places. [2023-11-29 06:01:32,882 INFO L231 Difference]: Finished difference. Result has 93 places, 90 transitions, 199 flow [2023-11-29 06:01:32,882 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=191, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=199, PETRI_PLACES=93, PETRI_TRANSITIONS=90} [2023-11-29 06:01:32,883 INFO L281 CegarLoopForPetriNet]: 90 programPoint places, 3 predicate places. [2023-11-29 06:01:32,883 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 90 transitions, 199 flow [2023-11-29 06:01:32,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:01:32,883 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:01:32,883 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:01:32,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 06:01:32,884 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-29 06:01:32,884 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:01:32,884 INFO L85 PathProgramCache]: Analyzing trace with hash 1989566528, now seen corresponding path program 1 times [2023-11-29 06:01:32,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:01:32,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669128544] [2023-11-29 06:01:32,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:01:32,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:01:32,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:01:32,955 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 06:01:32,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:01:32,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669128544] [2023-11-29 06:01:32,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669128544] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:01:32,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1446670112] [2023-11-29 06:01:32,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:01:32,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:01:32,957 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfe7f0c-9a15-4d6b-941c-7ba06782f675/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:01:32,958 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfe7f0c-9a15-4d6b-941c-7ba06782f675/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:01:32,963 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfe7f0c-9a15-4d6b-941c-7ba06782f675/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 06:01:33,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:01:33,046 INFO L262 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 06:01:33,047 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:01:33,068 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 06:01:33,069 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:01:33,100 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 06:01:33,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1446670112] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:01:33,101 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:01:33,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2023-11-29 06:01:33,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080948000] [2023-11-29 06:01:33,101 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:01:33,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 06:01:33,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:01:33,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 06:01:33,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-29 06:01:33,113 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 111 [2023-11-29 06:01:33,114 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 90 transitions, 199 flow. Second operand has 10 states, 10 states have (on average 41.4) internal successors, (414), 10 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:01:33,115 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:01:33,115 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 111 [2023-11-29 06:01:33,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:01:33,456 INFO L124 PetriNetUnfolderBase]: 459/1442 cut-off events. [2023-11-29 06:01:33,457 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2023-11-29 06:01:33,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2381 conditions, 1442 events. 459/1442 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 9599 event pairs, 414 based on Foata normal form. 2/1275 useless extension candidates. Maximal degree in co-relation 2347. Up to 915 conditions per place. [2023-11-29 06:01:33,465 INFO L140 encePairwiseOnDemand]: 107/111 looper letters, 46 selfloop transitions, 7 changer transitions 0/93 dead transitions. [2023-11-29 06:01:33,466 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 93 transitions, 320 flow [2023-11-29 06:01:33,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 06:01:33,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 06:01:33,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 335 transitions. [2023-11-29 06:01:33,468 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43114543114543114 [2023-11-29 06:01:33,468 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 335 transitions. [2023-11-29 06:01:33,468 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 335 transitions. [2023-11-29 06:01:33,469 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:01:33,469 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 335 transitions. [2023-11-29 06:01:33,470 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 47.857142857142854) internal successors, (335), 7 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:01:33,473 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 111.0) internal successors, (888), 8 states have internal predecessors, (888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:01:33,473 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 111.0) internal successors, (888), 8 states have internal predecessors, (888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:01:33,474 INFO L175 Difference]: Start difference. First operand has 93 places, 90 transitions, 199 flow. Second operand 7 states and 335 transitions. [2023-11-29 06:01:33,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 93 transitions, 320 flow [2023-11-29 06:01:33,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 93 transitions, 306 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 06:01:33,477 INFO L231 Difference]: Finished difference. Result has 99 places, 93 transitions, 225 flow [2023-11-29 06:01:33,478 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=191, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=225, PETRI_PLACES=99, PETRI_TRANSITIONS=93} [2023-11-29 06:01:33,478 INFO L281 CegarLoopForPetriNet]: 90 programPoint places, 9 predicate places. [2023-11-29 06:01:33,479 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 93 transitions, 225 flow [2023-11-29 06:01:33,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 41.4) internal successors, (414), 10 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:01:33,479 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:01:33,479 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1] [2023-11-29 06:01:33,485 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfe7f0c-9a15-4d6b-941c-7ba06782f675/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-29 06:01:33,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfe7f0c-9a15-4d6b-941c-7ba06782f675/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:01:33,683 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-29 06:01:33,683 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:01:33,684 INFO L85 PathProgramCache]: Analyzing trace with hash 1350244096, now seen corresponding path program 2 times [2023-11-29 06:01:33,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:01:33,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302773417] [2023-11-29 06:01:33,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:01:33,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:01:33,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:01:33,741 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-29 06:01:33,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:01:33,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302773417] [2023-11-29 06:01:33,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302773417] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:01:33,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:01:33,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:01:33,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772969864] [2023-11-29 06:01:33,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:01:33,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 06:01:33,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:01:33,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 06:01:33,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 06:01:33,749 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 111 [2023-11-29 06:01:33,749 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 93 transitions, 225 flow. Second operand has 4 states, 4 states have (on average 42.0) internal successors, (168), 4 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:01:33,750 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:01:33,750 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 111 [2023-11-29 06:01:33,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:01:34,012 INFO L124 PetriNetUnfolderBase]: 435/1246 cut-off events. [2023-11-29 06:01:34,012 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-11-29 06:01:34,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2153 conditions, 1246 events. 435/1246 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 8180 event pairs, 0 based on Foata normal form. 19/1143 useless extension candidates. Maximal degree in co-relation 2114. Up to 825 conditions per place. [2023-11-29 06:01:34,020 INFO L140 encePairwiseOnDemand]: 105/111 looper letters, 87 selfloop transitions, 3 changer transitions 0/128 dead transitions. [2023-11-29 06:01:34,020 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 128 transitions, 475 flow [2023-11-29 06:01:34,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 06:01:34,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 06:01:34,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 248 transitions. [2023-11-29 06:01:34,022 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5585585585585585 [2023-11-29 06:01:34,022 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 248 transitions. [2023-11-29 06:01:34,022 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 248 transitions. [2023-11-29 06:01:34,023 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:01:34,023 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 248 transitions. [2023-11-29 06:01:34,024 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 62.0) internal successors, (248), 4 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:01:34,025 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 111.0) internal successors, (555), 5 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:01:34,026 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 111.0) internal successors, (555), 5 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:01:34,026 INFO L175 Difference]: Start difference. First operand has 99 places, 93 transitions, 225 flow. Second operand 4 states and 248 transitions. [2023-11-29 06:01:34,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 128 transitions, 475 flow [2023-11-29 06:01:34,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 128 transitions, 471 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 06:01:34,031 INFO L231 Difference]: Finished difference. Result has 99 places, 91 transitions, 227 flow [2023-11-29 06:01:34,031 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=217, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=227, PETRI_PLACES=99, PETRI_TRANSITIONS=91} [2023-11-29 06:01:34,032 INFO L281 CegarLoopForPetriNet]: 90 programPoint places, 9 predicate places. [2023-11-29 06:01:34,032 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 91 transitions, 227 flow [2023-11-29 06:01:34,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.0) internal successors, (168), 4 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:01:34,033 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:01:34,033 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:01:34,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 06:01:34,033 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-29 06:01:34,033 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:01:34,033 INFO L85 PathProgramCache]: Analyzing trace with hash -1541132979, now seen corresponding path program 1 times [2023-11-29 06:01:34,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:01:34,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518257823] [2023-11-29 06:01:34,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:01:34,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:01:34,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:01:34,155 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 06:01:34,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:01:34,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518257823] [2023-11-29 06:01:34,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518257823] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:01:34,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [791494095] [2023-11-29 06:01:34,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:01:34,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:01:34,157 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfe7f0c-9a15-4d6b-941c-7ba06782f675/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:01:34,157 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfe7f0c-9a15-4d6b-941c-7ba06782f675/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:01:34,167 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfe7f0c-9a15-4d6b-941c-7ba06782f675/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 06:01:34,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:01:34,255 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 06:01:34,256 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:01:34,294 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 06:01:34,294 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:01:34,383 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 06:01:34,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [791494095] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:01:34,384 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:01:34,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2023-11-29 06:01:34,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330528536] [2023-11-29 06:01:34,384 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:01:34,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-29 06:01:34,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:01:34,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-29 06:01:34,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2023-11-29 06:01:34,404 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 111 [2023-11-29 06:01:34,406 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 91 transitions, 227 flow. Second operand has 18 states, 18 states have (on average 41.27777777777778) internal successors, (743), 18 states have internal predecessors, (743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:01:34,406 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:01:34,406 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 111 [2023-11-29 06:01:34,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:01:34,777 INFO L124 PetriNetUnfolderBase]: 458/1391 cut-off events. [2023-11-29 06:01:34,777 INFO L125 PetriNetUnfolderBase]: For 94/94 co-relation queries the response was YES. [2023-11-29 06:01:34,779 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2420 conditions, 1391 events. 458/1391 cut-off events. For 94/94 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 9011 event pairs, 414 based on Foata normal form. 4/1256 useless extension candidates. Maximal degree in co-relation 2345. Up to 897 conditions per place. [2023-11-29 06:01:34,786 INFO L140 encePairwiseOnDemand]: 107/111 looper letters, 46 selfloop transitions, 15 changer transitions 0/99 dead transitions. [2023-11-29 06:01:34,786 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 99 transitions, 397 flow [2023-11-29 06:01:34,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 06:01:34,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-29 06:01:34,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 665 transitions. [2023-11-29 06:01:34,789 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3993993993993994 [2023-11-29 06:01:34,789 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 665 transitions. [2023-11-29 06:01:34,789 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 665 transitions. [2023-11-29 06:01:34,790 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:01:34,790 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 665 transitions. [2023-11-29 06:01:34,792 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 44.333333333333336) internal successors, (665), 15 states have internal predecessors, (665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:01:34,796 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 111.0) internal successors, (1776), 16 states have internal predecessors, (1776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:01:34,796 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 111.0) internal successors, (1776), 16 states have internal predecessors, (1776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:01:34,797 INFO L175 Difference]: Start difference. First operand has 99 places, 91 transitions, 227 flow. Second operand 15 states and 665 transitions. [2023-11-29 06:01:34,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 99 transitions, 397 flow [2023-11-29 06:01:34,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 99 transitions, 391 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-29 06:01:34,800 INFO L231 Difference]: Finished difference. Result has 114 places, 99 transitions, 318 flow [2023-11-29 06:01:34,801 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=221, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=318, PETRI_PLACES=114, PETRI_TRANSITIONS=99} [2023-11-29 06:01:34,802 INFO L281 CegarLoopForPetriNet]: 90 programPoint places, 24 predicate places. [2023-11-29 06:01:34,802 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 99 transitions, 318 flow [2023-11-29 06:01:34,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 41.27777777777778) internal successors, (743), 18 states have internal predecessors, (743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:01:34,802 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:01:34,802 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:01:34,808 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfe7f0c-9a15-4d6b-941c-7ba06782f675/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 06:01:35,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfe7f0c-9a15-4d6b-941c-7ba06782f675/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:01:35,007 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-29 06:01:35,008 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:01:35,008 INFO L85 PathProgramCache]: Analyzing trace with hash -1694498867, now seen corresponding path program 2 times [2023-11-29 06:01:35,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:01:35,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174132274] [2023-11-29 06:01:35,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:01:35,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:01:35,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:01:35,295 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 06:01:35,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:01:35,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174132274] [2023-11-29 06:01:35,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174132274] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:01:35,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1574309720] [2023-11-29 06:01:35,296 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 06:01:35,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:01:35,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfe7f0c-9a15-4d6b-941c-7ba06782f675/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:01:35,297 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfe7f0c-9a15-4d6b-941c-7ba06782f675/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:01:35,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfe7f0c-9a15-4d6b-941c-7ba06782f675/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 06:01:35,396 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 06:01:35,396 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:01:35,397 INFO L262 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-29 06:01:35,399 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:01:35,466 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 06:01:35,467 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:01:35,654 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 06:01:35,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1574309720] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:01:35,654 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:01:35,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 22 [2023-11-29 06:01:35,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528138753] [2023-11-29 06:01:35,655 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:01:35,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-29 06:01:35,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:01:35,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-29 06:01:35,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2023-11-29 06:01:35,680 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 111 [2023-11-29 06:01:35,681 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 99 transitions, 318 flow. Second operand has 23 states, 23 states have (on average 41.26086956521739) internal successors, (949), 23 states have internal predecessors, (949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:01:35,681 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:01:35,681 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 111 [2023-11-29 06:01:35,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:01:36,126 INFO L124 PetriNetUnfolderBase]: 458/1400 cut-off events. [2023-11-29 06:01:36,126 INFO L125 PetriNetUnfolderBase]: For 138/138 co-relation queries the response was YES. [2023-11-29 06:01:36,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2445 conditions, 1400 events. 458/1400 cut-off events. For 138/138 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 9020 event pairs, 414 based on Foata normal form. 3/1264 useless extension candidates. Maximal degree in co-relation 2310. Up to 897 conditions per place. [2023-11-29 06:01:36,135 INFO L140 encePairwiseOnDemand]: 107/111 looper letters, 46 selfloop transitions, 21 changer transitions 0/105 dead transitions. [2023-11-29 06:01:36,135 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 105 transitions, 506 flow [2023-11-29 06:01:36,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-29 06:01:36,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-11-29 06:01:36,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 910 transitions. [2023-11-29 06:01:36,140 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39039039039039036 [2023-11-29 06:01:36,140 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 910 transitions. [2023-11-29 06:01:36,141 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 910 transitions. [2023-11-29 06:01:36,141 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:01:36,142 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 910 transitions. [2023-11-29 06:01:36,145 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 43.333333333333336) internal successors, (910), 21 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:01:36,150 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 111.0) internal successors, (2442), 22 states have internal predecessors, (2442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:01:36,150 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 111.0) internal successors, (2442), 22 states have internal predecessors, (2442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:01:36,150 INFO L175 Difference]: Start difference. First operand has 114 places, 99 transitions, 318 flow. Second operand 21 states and 910 transitions. [2023-11-29 06:01:36,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 105 transitions, 506 flow [2023-11-29 06:01:36,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 105 transitions, 496 flow, removed 1 selfloop flow, removed 4 redundant places. [2023-11-29 06:01:36,156 INFO L231 Difference]: Finished difference. Result has 133 places, 105 transitions, 419 flow [2023-11-29 06:01:36,156 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=308, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=419, PETRI_PLACES=133, PETRI_TRANSITIONS=105} [2023-11-29 06:01:36,157 INFO L281 CegarLoopForPetriNet]: 90 programPoint places, 43 predicate places. [2023-11-29 06:01:36,157 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 105 transitions, 419 flow [2023-11-29 06:01:36,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 41.26086956521739) internal successors, (949), 23 states have internal predecessors, (949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:01:36,158 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:01:36,158 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:01:36,163 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfe7f0c-9a15-4d6b-941c-7ba06782f675/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 06:01:36,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfe7f0c-9a15-4d6b-941c-7ba06782f675/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:01:36,363 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-29 06:01:36,363 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:01:36,363 INFO L85 PathProgramCache]: Analyzing trace with hash -1236893957, now seen corresponding path program 3 times [2023-11-29 06:01:36,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:01:36,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236565210] [2023-11-29 06:01:36,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:01:36,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:01:36,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 06:01:36,396 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 06:01:36,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 06:01:36,442 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 06:01:36,442 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-29 06:01:36,443 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 19 remaining) [2023-11-29 06:01:36,445 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 19 remaining) [2023-11-29 06:01:36,445 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 19 remaining) [2023-11-29 06:01:36,445 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 19 remaining) [2023-11-29 06:01:36,445 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 19 remaining) [2023-11-29 06:01:36,445 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 19 remaining) [2023-11-29 06:01:36,445 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 19 remaining) [2023-11-29 06:01:36,445 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 19 remaining) [2023-11-29 06:01:36,446 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 19 remaining) [2023-11-29 06:01:36,446 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 19 remaining) [2023-11-29 06:01:36,446 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 19 remaining) [2023-11-29 06:01:36,446 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 19 remaining) [2023-11-29 06:01:36,446 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 19 remaining) [2023-11-29 06:01:36,446 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 19 remaining) [2023-11-29 06:01:36,446 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 19 remaining) [2023-11-29 06:01:36,447 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 19 remaining) [2023-11-29 06:01:36,447 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 19 remaining) [2023-11-29 06:01:36,447 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 19 remaining) [2023-11-29 06:01:36,447 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 19 remaining) [2023-11-29 06:01:36,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 06:01:36,447 INFO L445 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1] [2023-11-29 06:01:36,450 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-29 06:01:36,450 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-29 06:01:36,483 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-29 06:01:36,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 126 places, 157 transitions, 330 flow [2023-11-29 06:01:36,516 INFO L124 PetriNetUnfolderBase]: 59/270 cut-off events. [2023-11-29 06:01:36,516 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-29 06:01:36,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 282 conditions, 270 events. 59/270 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1213 event pairs, 0 based on Foata normal form. 0/175 useless extension candidates. Maximal degree in co-relation 160. Up to 12 conditions per place. [2023-11-29 06:01:36,518 INFO L82 GeneralOperation]: Start removeDead. Operand has 126 places, 157 transitions, 330 flow [2023-11-29 06:01:36,522 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 126 places, 157 transitions, 330 flow [2023-11-29 06:01:36,523 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 06:01:36,524 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;@5c840992, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 06:01:36,524 INFO L358 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2023-11-29 06:01:36,525 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 06:01:36,525 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2023-11-29 06:01:36,525 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 06:01:36,525 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:01:36,525 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-29 06:01:36,526 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-29 06:01:36,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:01:36,526 INFO L85 PathProgramCache]: Analyzing trace with hash 804397, now seen corresponding path program 1 times [2023-11-29 06:01:36,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:01:36,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10151706] [2023-11-29 06:01:36,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:01:36,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:01:36,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:01:36,553 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 06:01:36,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:01:36,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10151706] [2023-11-29 06:01:36,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10151706] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:01:36,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:01:36,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 06:01:36,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069025498] [2023-11-29 06:01:36,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:01:36,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 06:01:36,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:01:36,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 06:01:36,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 06:01:36,558 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 157 [2023-11-29 06:01:36,559 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 157 transitions, 330 flow. Second operand has 4 states, 4 states have (on average 56.75) internal successors, (227), 4 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:01:36,559 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:01:36,559 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 157 [2023-11-29 06:01:36,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:01:39,794 INFO L124 PetriNetUnfolderBase]: 17960/38372 cut-off events. [2023-11-29 06:01:39,794 INFO L125 PetriNetUnfolderBase]: For 113/113 co-relation queries the response was YES. [2023-11-29 06:01:39,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65298 conditions, 38372 events. 17960/38372 cut-off events. For 113/113 co-relation queries the response was YES. Maximal size of possible extension queue 1096. Compared 390444 event pairs, 16614 based on Foata normal form. 8450/42658 useless extension candidates. Maximal degree in co-relation 53072. Up to 26822 conditions per place. [2023-11-29 06:01:39,970 INFO L140 encePairwiseOnDemand]: 121/157 looper letters, 70 selfloop transitions, 3 changer transitions 0/129 dead transitions. [2023-11-29 06:01:39,970 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 129 transitions, 420 flow [2023-11-29 06:01:39,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 06:01:39,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 06:01:39,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 330 transitions. [2023-11-29 06:01:39,972 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5254777070063694 [2023-11-29 06:01:39,973 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 330 transitions. [2023-11-29 06:01:39,973 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 330 transitions. [2023-11-29 06:01:39,973 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:01:39,973 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 330 transitions. [2023-11-29 06:01:39,975 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 82.5) internal successors, (330), 4 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:01:39,976 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 157.0) internal successors, (785), 5 states have internal predecessors, (785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:01:39,976 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 157.0) internal successors, (785), 5 states have internal predecessors, (785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:01:39,976 INFO L175 Difference]: Start difference. First operand has 126 places, 157 transitions, 330 flow. Second operand 4 states and 330 transitions. [2023-11-29 06:01:39,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 129 transitions, 420 flow [2023-11-29 06:01:39,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 129 transitions, 420 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 06:01:39,980 INFO L231 Difference]: Finished difference. Result has 131 places, 129 transitions, 294 flow [2023-11-29 06:01:39,980 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=294, PETRI_PLACES=131, PETRI_TRANSITIONS=129} [2023-11-29 06:01:39,981 INFO L281 CegarLoopForPetriNet]: 126 programPoint places, 5 predicate places. [2023-11-29 06:01:39,981 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 129 transitions, 294 flow [2023-11-29 06:01:39,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.75) internal successors, (227), 4 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:01:39,982 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:01:39,982 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-29 06:01:39,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 06:01:39,982 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-29 06:01:39,983 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:01:39,983 INFO L85 PathProgramCache]: Analyzing trace with hash -1805206430, now seen corresponding path program 1 times [2023-11-29 06:01:39,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:01:39,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812545278] [2023-11-29 06:01:39,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:01:39,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:01:39,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:01:40,035 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:01:40,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:01:40,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812545278] [2023-11-29 06:01:40,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812545278] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:01:40,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1043139164] [2023-11-29 06:01:40,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:01:40,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:01:40,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfe7f0c-9a15-4d6b-941c-7ba06782f675/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:01:40,037 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfe7f0c-9a15-4d6b-941c-7ba06782f675/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:01:40,047 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfe7f0c-9a15-4d6b-941c-7ba06782f675/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 06:01:40,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:01:40,206 INFO L262 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 06:01:40,206 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:01:40,232 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:01:40,232 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:01:40,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1043139164] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:01:40,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 06:01:40,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-11-29 06:01:40,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143015746] [2023-11-29 06:01:40,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:01:40,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 06:01:40,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:01:40,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 06:01:40,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-29 06:01:40,242 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 157 [2023-11-29 06:01:40,242 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 129 transitions, 294 flow. Second operand has 6 states, 6 states have (on average 56.833333333333336) internal successors, (341), 6 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:01:40,242 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:01:40,242 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 157 [2023-11-29 06:01:40,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:01:43,264 INFO L124 PetriNetUnfolderBase]: 17960/38371 cut-off events. [2023-11-29 06:01:43,264 INFO L125 PetriNetUnfolderBase]: For 115/115 co-relation queries the response was YES. [2023-11-29 06:01:43,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65308 conditions, 38371 events. 17960/38371 cut-off events. For 115/115 co-relation queries the response was YES. Maximal size of possible extension queue 1096. Compared 390325 event pairs, 16614 based on Foata normal form. 1/34208 useless extension candidates. Maximal degree in co-relation 65289. Up to 26817 conditions per place. [2023-11-29 06:01:43,409 INFO L140 encePairwiseOnDemand]: 152/157 looper letters, 66 selfloop transitions, 6 changer transitions 0/128 dead transitions. [2023-11-29 06:01:43,409 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 128 transitions, 434 flow [2023-11-29 06:01:43,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 06:01:43,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 06:01:43,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 409 transitions. [2023-11-29 06:01:43,411 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43418259023354566 [2023-11-29 06:01:43,411 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 409 transitions. [2023-11-29 06:01:43,411 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 409 transitions. [2023-11-29 06:01:43,412 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:01:43,412 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 409 transitions. [2023-11-29 06:01:43,413 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 68.16666666666667) internal successors, (409), 6 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:01:43,415 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 157.0) internal successors, (1099), 7 states have internal predecessors, (1099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:01:43,416 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 157.0) internal successors, (1099), 7 states have internal predecessors, (1099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:01:43,416 INFO L175 Difference]: Start difference. First operand has 131 places, 129 transitions, 294 flow. Second operand 6 states and 409 transitions. [2023-11-29 06:01:43,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 128 transitions, 434 flow [2023-11-29 06:01:43,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 128 transitions, 432 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 06:01:43,420 INFO L231 Difference]: Finished difference. Result has 134 places, 128 transitions, 300 flow [2023-11-29 06:01:43,420 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=300, PETRI_PLACES=134, PETRI_TRANSITIONS=128} [2023-11-29 06:01:43,421 INFO L281 CegarLoopForPetriNet]: 126 programPoint places, 8 predicate places. [2023-11-29 06:01:43,421 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 128 transitions, 300 flow [2023-11-29 06:01:43,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 56.833333333333336) internal successors, (341), 6 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:01:43,422 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:01:43,422 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2023-11-29 06:01:43,427 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfe7f0c-9a15-4d6b-941c-7ba06782f675/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 06:01:43,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfe7f0c-9a15-4d6b-941c-7ba06782f675/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-29 06:01:43,623 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-29 06:01:43,623 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:01:43,624 INFO L85 PathProgramCache]: Analyzing trace with hash -126823669, now seen corresponding path program 1 times [2023-11-29 06:01:43,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:01:43,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763918908] [2023-11-29 06:01:43,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:01:43,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:01:43,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:01:43,648 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 06:01:43,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:01:43,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763918908] [2023-11-29 06:01:43,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763918908] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:01:43,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:01:43,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 06:01:43,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589017201] [2023-11-29 06:01:43,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:01:43,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:01:43,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:01:43,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:01:43,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:01:43,654 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 157 [2023-11-29 06:01:43,654 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 128 transitions, 300 flow. Second operand has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:01:43,654 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:01:43,654 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 157 [2023-11-29 06:01:43,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:01:46,477 INFO L124 PetriNetUnfolderBase]: 17960/38370 cut-off events. [2023-11-29 06:01:46,477 INFO L125 PetriNetUnfolderBase]: For 120/120 co-relation queries the response was YES. [2023-11-29 06:01:46,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65310 conditions, 38370 events. 17960/38370 cut-off events. For 120/120 co-relation queries the response was YES. Maximal size of possible extension queue 1096. Compared 390531 event pairs, 16614 based on Foata normal form. 1/34208 useless extension candidates. Maximal degree in co-relation 65285. Up to 26820 conditions per place. [2023-11-29 06:01:46,621 INFO L140 encePairwiseOnDemand]: 154/157 looper letters, 67 selfloop transitions, 4 changer transitions 0/127 dead transitions. [2023-11-29 06:01:46,621 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 127 transitions, 438 flow [2023-11-29 06:01:46,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:01:46,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 06:01:46,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 238 transitions. [2023-11-29 06:01:46,622 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.505307855626327 [2023-11-29 06:01:46,622 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 238 transitions. [2023-11-29 06:01:46,623 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 238 transitions. [2023-11-29 06:01:46,623 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:01:46,623 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 238 transitions. [2023-11-29 06:01:46,623 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:01:46,624 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 157.0) internal successors, (628), 4 states have internal predecessors, (628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:01:46,624 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 157.0) internal successors, (628), 4 states have internal predecessors, (628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:01:46,624 INFO L175 Difference]: Start difference. First operand has 134 places, 128 transitions, 300 flow. Second operand 3 states and 238 transitions. [2023-11-29 06:01:46,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 127 transitions, 438 flow [2023-11-29 06:01:46,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 127 transitions, 416 flow, removed 3 selfloop flow, removed 6 redundant places. [2023-11-29 06:01:46,627 INFO L231 Difference]: Finished difference. Result has 129 places, 127 transitions, 282 flow [2023-11-29 06:01:46,627 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=282, PETRI_PLACES=129, PETRI_TRANSITIONS=127} [2023-11-29 06:01:46,628 INFO L281 CegarLoopForPetriNet]: 126 programPoint places, 3 predicate places. [2023-11-29 06:01:46,628 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 127 transitions, 282 flow [2023-11-29 06:01:46,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:01:46,628 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:01:46,628 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:01:46,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-29 06:01:46,629 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-29 06:01:46,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:01:46,629 INFO L85 PathProgramCache]: Analyzing trace with hash -1615792247, now seen corresponding path program 1 times [2023-11-29 06:01:46,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:01:46,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649556023] [2023-11-29 06:01:46,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:01:46,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:01:46,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:01:46,675 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 06:01:46,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:01:46,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649556023] [2023-11-29 06:01:46,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649556023] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:01:46,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [379292254] [2023-11-29 06:01:46,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:01:46,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:01:46,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfe7f0c-9a15-4d6b-941c-7ba06782f675/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:01:46,677 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfe7f0c-9a15-4d6b-941c-7ba06782f675/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:01:46,680 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfe7f0c-9a15-4d6b-941c-7ba06782f675/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 06:01:46,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:01:46,752 INFO L262 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 06:01:46,752 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:01:46,765 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 06:01:46,765 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:01:46,785 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 06:01:46,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [379292254] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:01:46,786 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:01:46,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2023-11-29 06:01:46,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853200795] [2023-11-29 06:01:46,786 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:01:46,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 06:01:46,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:01:46,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 06:01:46,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-29 06:01:46,798 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 157 [2023-11-29 06:01:46,799 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 127 transitions, 282 flow. Second operand has 10 states, 10 states have (on average 57.4) internal successors, (574), 10 states have internal predecessors, (574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:01:46,799 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:01:46,799 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 157 [2023-11-29 06:01:46,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:01:49,620 INFO L124 PetriNetUnfolderBase]: 17960/38374 cut-off events. [2023-11-29 06:01:49,620 INFO L125 PetriNetUnfolderBase]: For 122/122 co-relation queries the response was YES. [2023-11-29 06:01:49,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65313 conditions, 38374 events. 17960/38374 cut-off events. For 122/122 co-relation queries the response was YES. Maximal size of possible extension queue 1096. Compared 390447 event pairs, 16614 based on Foata normal form. 2/34214 useless extension candidates. Maximal degree in co-relation 65278. Up to 26818 conditions per place. [2023-11-29 06:01:49,777 INFO L140 encePairwiseOnDemand]: 153/157 looper letters, 67 selfloop transitions, 7 changer transitions 0/130 dead transitions. [2023-11-29 06:01:49,777 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 130 transitions, 445 flow [2023-11-29 06:01:49,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 06:01:49,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 06:01:49,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 468 transitions. [2023-11-29 06:01:49,780 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42584167424931757 [2023-11-29 06:01:49,780 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 468 transitions. [2023-11-29 06:01:49,781 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 468 transitions. [2023-11-29 06:01:49,781 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:01:49,781 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 468 transitions. [2023-11-29 06:01:49,782 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 66.85714285714286) internal successors, (468), 7 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:01:49,784 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 157.0) internal successors, (1256), 8 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:01:49,784 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 157.0) internal successors, (1256), 8 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:01:49,785 INFO L175 Difference]: Start difference. First operand has 129 places, 127 transitions, 282 flow. Second operand 7 states and 468 transitions. [2023-11-29 06:01:49,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 130 transitions, 445 flow [2023-11-29 06:01:49,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 130 transitions, 431 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 06:01:49,788 INFO L231 Difference]: Finished difference. Result has 135 places, 130 transitions, 308 flow [2023-11-29 06:01:49,789 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=308, PETRI_PLACES=135, PETRI_TRANSITIONS=130} [2023-11-29 06:01:49,789 INFO L281 CegarLoopForPetriNet]: 126 programPoint places, 9 predicate places. [2023-11-29 06:01:49,789 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 130 transitions, 308 flow [2023-11-29 06:01:49,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 57.4) internal successors, (574), 10 states have internal predecessors, (574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:01:49,790 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:01:49,790 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1] [2023-11-29 06:01:49,795 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfe7f0c-9a15-4d6b-941c-7ba06782f675/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-29 06:01:49,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfe7f0c-9a15-4d6b-941c-7ba06782f675/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:01:49,991 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-29 06:01:49,991 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:01:49,991 INFO L85 PathProgramCache]: Analyzing trace with hash 969140073, now seen corresponding path program 2 times [2023-11-29 06:01:49,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:01:49,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565083704] [2023-11-29 06:01:49,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:01:49,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:01:50,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:01:50,046 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-29 06:01:50,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:01:50,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565083704] [2023-11-29 06:01:50,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565083704] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:01:50,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:01:50,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:01:50,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281572443] [2023-11-29 06:01:50,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:01:50,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 06:01:50,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:01:50,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 06:01:50,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 06:01:50,055 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 157 [2023-11-29 06:01:50,056 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 130 transitions, 308 flow. Second operand has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:01:50,056 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:01:50,056 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 157 [2023-11-29 06:01:50,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:01:53,045 INFO L124 PetriNetUnfolderBase]: 19402/41352 cut-off events. [2023-11-29 06:01:53,045 INFO L125 PetriNetUnfolderBase]: For 107/107 co-relation queries the response was YES. [2023-11-29 06:01:53,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70458 conditions, 41352 events. 19402/41352 cut-off events. For 107/107 co-relation queries the response was YES. Maximal size of possible extension queue 1153. Compared 426464 event pairs, 11742 based on Foata normal form. 19/36811 useless extension candidates. Maximal degree in co-relation 70418. Up to 28927 conditions per place. [2023-11-29 06:01:53,200 INFO L140 encePairwiseOnDemand]: 151/157 looper letters, 112 selfloop transitions, 3 changer transitions 0/169 dead transitions. [2023-11-29 06:01:53,200 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 169 transitions, 616 flow [2023-11-29 06:01:53,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 06:01:53,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 06:01:53,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 337 transitions. [2023-11-29 06:01:53,202 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5366242038216561 [2023-11-29 06:01:53,202 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 337 transitions. [2023-11-29 06:01:53,202 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 337 transitions. [2023-11-29 06:01:53,202 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:01:53,202 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 337 transitions. [2023-11-29 06:01:53,203 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 84.25) internal successors, (337), 4 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:01:53,204 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 157.0) internal successors, (785), 5 states have internal predecessors, (785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:01:53,204 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 157.0) internal successors, (785), 5 states have internal predecessors, (785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:01:53,204 INFO L175 Difference]: Start difference. First operand has 135 places, 130 transitions, 308 flow. Second operand 4 states and 337 transitions. [2023-11-29 06:01:53,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 169 transitions, 616 flow [2023-11-29 06:01:53,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 169 transitions, 612 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 06:01:53,208 INFO L231 Difference]: Finished difference. Result has 138 places, 132 transitions, 328 flow [2023-11-29 06:01:53,208 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=328, PETRI_PLACES=138, PETRI_TRANSITIONS=132} [2023-11-29 06:01:53,209 INFO L281 CegarLoopForPetriNet]: 126 programPoint places, 12 predicate places. [2023-11-29 06:01:53,209 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 132 transitions, 328 flow [2023-11-29 06:01:53,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:01:53,209 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:01:53,209 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:01:53,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-29 06:01:53,209 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-29 06:01:53,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:01:53,210 INFO L85 PathProgramCache]: Analyzing trace with hash 2074295790, now seen corresponding path program 1 times [2023-11-29 06:01:53,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:01:53,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023506275] [2023-11-29 06:01:53,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:01:53,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:01:53,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:01:53,312 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 06:01:53,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:01:53,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023506275] [2023-11-29 06:01:53,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023506275] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:01:53,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1325119229] [2023-11-29 06:01:53,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:01:53,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:01:53,313 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfe7f0c-9a15-4d6b-941c-7ba06782f675/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:01:53,315 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfe7f0c-9a15-4d6b-941c-7ba06782f675/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:01:53,317 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfe7f0c-9a15-4d6b-941c-7ba06782f675/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 06:01:53,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:01:53,415 INFO L262 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 06:01:53,416 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:01:53,442 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 06:01:53,442 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:01:53,510 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 06:01:53,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1325119229] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:01:53,510 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:01:53,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2023-11-29 06:01:53,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899080605] [2023-11-29 06:01:53,510 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:01:53,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-29 06:01:53,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:01:53,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-29 06:01:53,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2023-11-29 06:01:53,523 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 157 [2023-11-29 06:01:53,525 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 132 transitions, 328 flow. Second operand has 18 states, 18 states have (on average 57.333333333333336) internal successors, (1032), 18 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:01:53,525 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:01:53,525 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 157 [2023-11-29 06:01:53,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:01:57,302 INFO L124 PetriNetUnfolderBase]: 17958/38482 cut-off events. [2023-11-29 06:01:57,302 INFO L125 PetriNetUnfolderBase]: For 1315/2006 co-relation queries the response was YES. [2023-11-29 06:01:57,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66640 conditions, 38482 events. 17958/38482 cut-off events. For 1315/2006 co-relation queries the response was YES. Maximal size of possible extension queue 1061. Compared 391796 event pairs, 16614 based on Foata normal form. 4/34678 useless extension candidates. Maximal degree in co-relation 66563. Up to 26812 conditions per place. [2023-11-29 06:01:57,459 INFO L140 encePairwiseOnDemand]: 153/157 looper letters, 69 selfloop transitions, 15 changer transitions 0/140 dead transitions. [2023-11-29 06:01:57,459 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 140 transitions, 544 flow [2023-11-29 06:01:57,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 06:01:57,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-29 06:01:57,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 926 transitions. [2023-11-29 06:01:57,463 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3932059447983015 [2023-11-29 06:01:57,463 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 926 transitions. [2023-11-29 06:01:57,463 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 926 transitions. [2023-11-29 06:01:57,464 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:01:57,464 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 926 transitions. [2023-11-29 06:01:57,467 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 61.733333333333334) internal successors, (926), 15 states have internal predecessors, (926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:01:57,471 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 157.0) internal successors, (2512), 16 states have internal predecessors, (2512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:01:57,472 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 157.0) internal successors, (2512), 16 states have internal predecessors, (2512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:01:57,472 INFO L175 Difference]: Start difference. First operand has 138 places, 132 transitions, 328 flow. Second operand 15 states and 926 transitions. [2023-11-29 06:01:57,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 140 transitions, 544 flow [2023-11-29 06:01:57,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 140 transitions, 542 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 06:01:57,479 INFO L231 Difference]: Finished difference. Result has 155 places, 140 transitions, 423 flow [2023-11-29 06:01:57,479 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=326, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=423, PETRI_PLACES=155, PETRI_TRANSITIONS=140} [2023-11-29 06:01:57,480 INFO L281 CegarLoopForPetriNet]: 126 programPoint places, 29 predicate places. [2023-11-29 06:01:57,480 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 140 transitions, 423 flow [2023-11-29 06:01:57,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 57.333333333333336) internal successors, (1032), 18 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:01:57,481 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:01:57,481 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:01:57,486 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfe7f0c-9a15-4d6b-941c-7ba06782f675/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 06:01:57,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfe7f0c-9a15-4d6b-941c-7ba06782f675/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:01:57,681 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-29 06:01:57,682 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:01:57,682 INFO L85 PathProgramCache]: Analyzing trace with hash -1793823186, now seen corresponding path program 2 times [2023-11-29 06:01:57,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:01:57,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673161430] [2023-11-29 06:01:57,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:01:57,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:01:57,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:01:57,935 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 06:01:57,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:01:57,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673161430] [2023-11-29 06:01:57,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673161430] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:01:57,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [459706438] [2023-11-29 06:01:57,936 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 06:01:57,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:01:57,936 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfe7f0c-9a15-4d6b-941c-7ba06782f675/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:01:57,937 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfe7f0c-9a15-4d6b-941c-7ba06782f675/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:01:57,943 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfe7f0c-9a15-4d6b-941c-7ba06782f675/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 06:01:58,061 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 06:01:58,061 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:01:58,063 INFO L262 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-29 06:01:58,065 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:01:58,117 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 06:01:58,117 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:01:58,276 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 06:01:58,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [459706438] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:01:58,276 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:01:58,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 22 [2023-11-29 06:01:58,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189881080] [2023-11-29 06:01:58,276 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:01:58,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-29 06:01:58,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:01:58,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-29 06:01:58,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2023-11-29 06:01:58,298 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 157 [2023-11-29 06:01:58,300 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 140 transitions, 423 flow. Second operand has 23 states, 23 states have (on average 57.30434782608695) internal successors, (1318), 23 states have internal predecessors, (1318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:01:58,300 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:01:58,300 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 157 [2023-11-29 06:01:58,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:02:02,297 INFO L124 PetriNetUnfolderBase]: 17958/38491 cut-off events. [2023-11-29 06:02:02,297 INFO L125 PetriNetUnfolderBase]: For 1396/2087 co-relation queries the response was YES. [2023-11-29 06:02:02,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66685 conditions, 38491 events. 17958/38491 cut-off events. For 1396/2087 co-relation queries the response was YES. Maximal size of possible extension queue 1061. Compared 391826 event pairs, 16614 based on Foata normal form. 3/34686 useless extension candidates. Maximal degree in co-relation 66548. Up to 26812 conditions per place. [2023-11-29 06:02:02,472 INFO L140 encePairwiseOnDemand]: 153/157 looper letters, 69 selfloop transitions, 21 changer transitions 0/146 dead transitions. [2023-11-29 06:02:02,472 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 146 transitions, 657 flow [2023-11-29 06:02:02,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-29 06:02:02,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-11-29 06:02:02,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1267 transitions. [2023-11-29 06:02:02,477 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3842887473460722 [2023-11-29 06:02:02,477 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1267 transitions. [2023-11-29 06:02:02,477 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1267 transitions. [2023-11-29 06:02:02,478 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:02:02,478 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1267 transitions. [2023-11-29 06:02:02,481 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 60.333333333333336) internal successors, (1267), 21 states have internal predecessors, (1267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:02:02,485 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 157.0) internal successors, (3454), 22 states have internal predecessors, (3454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:02:02,485 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 157.0) internal successors, (3454), 22 states have internal predecessors, (3454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:02:02,486 INFO L175 Difference]: Start difference. First operand has 155 places, 140 transitions, 423 flow. Second operand 21 states and 1267 transitions. [2023-11-29 06:02:02,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 146 transitions, 657 flow [2023-11-29 06:02:02,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 146 transitions, 647 flow, removed 1 selfloop flow, removed 4 redundant places. [2023-11-29 06:02:02,491 INFO L231 Difference]: Finished difference. Result has 174 places, 146 transitions, 524 flow [2023-11-29 06:02:02,491 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=413, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=524, PETRI_PLACES=174, PETRI_TRANSITIONS=146} [2023-11-29 06:02:02,491 INFO L281 CegarLoopForPetriNet]: 126 programPoint places, 48 predicate places. [2023-11-29 06:02:02,492 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 146 transitions, 524 flow [2023-11-29 06:02:02,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 57.30434782608695) internal successors, (1318), 23 states have internal predecessors, (1318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:02:02,492 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:02:02,492 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:02:02,498 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfe7f0c-9a15-4d6b-941c-7ba06782f675/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 06:02:02,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfe7f0c-9a15-4d6b-941c-7ba06782f675/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:02:02,693 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-29 06:02:02,693 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:02:02,693 INFO L85 PathProgramCache]: Analyzing trace with hash -1359341575, now seen corresponding path program 3 times [2023-11-29 06:02:02,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:02:02,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293337251] [2023-11-29 06:02:02,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:02:02,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:02:02,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:02:02,784 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-29 06:02:02,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:02:02,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293337251] [2023-11-29 06:02:02,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293337251] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:02:02,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [605679448] [2023-11-29 06:02:02,784 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 06:02:02,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:02:02,785 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfe7f0c-9a15-4d6b-941c-7ba06782f675/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:02:02,786 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfe7f0c-9a15-4d6b-941c-7ba06782f675/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:02:02,795 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfe7f0c-9a15-4d6b-941c-7ba06782f675/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 06:02:02,900 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-29 06:02:02,900 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:02:02,901 INFO L262 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 06:02:02,902 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:02:02,934 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-29 06:02:02,934 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:02:02,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [605679448] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:02:02,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 06:02:02,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2023-11-29 06:02:02,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941661999] [2023-11-29 06:02:02,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:02:02,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 06:02:02,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:02:02,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 06:02:02,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-29 06:02:02,940 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 157 [2023-11-29 06:02:02,941 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 146 transitions, 524 flow. Second operand has 5 states, 5 states have (on average 57.6) internal successors, (288), 5 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:02:02,941 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:02:02,941 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 157 [2023-11-29 06:02:02,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:02:06,708 INFO L124 PetriNetUnfolderBase]: 19009/36812 cut-off events. [2023-11-29 06:02:06,708 INFO L125 PetriNetUnfolderBase]: For 1424/1424 co-relation queries the response was YES. [2023-11-29 06:02:06,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67139 conditions, 36812 events. 19009/36812 cut-off events. For 1424/1424 co-relation queries the response was YES. Maximal size of possible extension queue 1067. Compared 351616 event pairs, 1897 based on Foata normal form. 361/33723 useless extension candidates. Maximal degree in co-relation 66978. Up to 22334 conditions per place. [2023-11-29 06:02:06,895 INFO L140 encePairwiseOnDemand]: 152/157 looper letters, 158 selfloop transitions, 6 changer transitions 0/217 dead transitions. [2023-11-29 06:02:06,896 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 217 transitions, 992 flow [2023-11-29 06:02:06,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 06:02:06,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 06:02:06,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 364 transitions. [2023-11-29 06:02:06,897 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5796178343949044 [2023-11-29 06:02:06,897 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 364 transitions. [2023-11-29 06:02:06,897 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 364 transitions. [2023-11-29 06:02:06,897 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:02:06,897 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 364 transitions. [2023-11-29 06:02:06,898 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:02:06,899 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 157.0) internal successors, (785), 5 states have internal predecessors, (785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:02:06,899 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 157.0) internal successors, (785), 5 states have internal predecessors, (785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:02:06,899 INFO L175 Difference]: Start difference. First operand has 174 places, 146 transitions, 524 flow. Second operand 4 states and 364 transitions. [2023-11-29 06:02:06,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 217 transitions, 992 flow [2023-11-29 06:02:06,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 217 transitions, 949 flow, removed 1 selfloop flow, removed 13 redundant places. [2023-11-29 06:02:06,909 INFO L231 Difference]: Finished difference. Result has 163 places, 145 transitions, 489 flow [2023-11-29 06:02:06,909 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=477, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=489, PETRI_PLACES=163, PETRI_TRANSITIONS=145} [2023-11-29 06:02:06,910 INFO L281 CegarLoopForPetriNet]: 126 programPoint places, 37 predicate places. [2023-11-29 06:02:06,910 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 145 transitions, 489 flow [2023-11-29 06:02:06,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 57.6) internal successors, (288), 5 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:02:06,910 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:02:06,910 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-11-29 06:02:06,914 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfe7f0c-9a15-4d6b-941c-7ba06782f675/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-29 06:02:07,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfe7f0c-9a15-4d6b-941c-7ba06782f675/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-29 06:02:07,111 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-29 06:02:07,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:02:07,111 INFO L85 PathProgramCache]: Analyzing trace with hash 810084994, now seen corresponding path program 1 times [2023-11-29 06:02:07,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:02:07,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034143887] [2023-11-29 06:02:07,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:02:07,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:02:07,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:02:07,172 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2023-11-29 06:02:07,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:02:07,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034143887] [2023-11-29 06:02:07,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034143887] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:02:07,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:02:07,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:02:07,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138140582] [2023-11-29 06:02:07,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:02:07,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 06:02:07,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:02:07,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 06:02:07,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 06:02:07,180 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 157 [2023-11-29 06:02:07,180 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 145 transitions, 489 flow. Second operand has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:02:07,180 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:02:07,180 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 157 [2023-11-29 06:02:07,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:02:10,495 INFO L124 PetriNetUnfolderBase]: 17518/33357 cut-off events. [2023-11-29 06:02:10,495 INFO L125 PetriNetUnfolderBase]: For 3111/3111 co-relation queries the response was YES. [2023-11-29 06:02:10,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62288 conditions, 33357 events. 17518/33357 cut-off events. For 3111/3111 co-relation queries the response was YES. Maximal size of possible extension queue 973. Compared 309580 event pairs, 2177 based on Foata normal form. 361/31111 useless extension candidates. Maximal degree in co-relation 62148. Up to 23492 conditions per place. [2023-11-29 06:02:10,667 INFO L140 encePairwiseOnDemand]: 152/157 looper letters, 157 selfloop transitions, 6 changer transitions 0/217 dead transitions. [2023-11-29 06:02:10,667 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 217 transitions, 957 flow [2023-11-29 06:02:10,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 06:02:10,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 06:02:10,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 367 transitions. [2023-11-29 06:02:10,668 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5843949044585988 [2023-11-29 06:02:10,668 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 367 transitions. [2023-11-29 06:02:10,668 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 367 transitions. [2023-11-29 06:02:10,669 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:02:10,669 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 367 transitions. [2023-11-29 06:02:10,669 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 91.75) internal successors, (367), 4 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:02:10,671 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 157.0) internal successors, (785), 5 states have internal predecessors, (785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:02:10,671 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 157.0) internal successors, (785), 5 states have internal predecessors, (785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:02:10,671 INFO L175 Difference]: Start difference. First operand has 163 places, 145 transitions, 489 flow. Second operand 4 states and 367 transitions. [2023-11-29 06:02:10,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 217 transitions, 957 flow [2023-11-29 06:02:10,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 217 transitions, 945 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-29 06:02:10,684 INFO L231 Difference]: Finished difference. Result has 163 places, 145 transitions, 493 flow [2023-11-29 06:02:10,684 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=473, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=493, PETRI_PLACES=163, PETRI_TRANSITIONS=145} [2023-11-29 06:02:10,684 INFO L281 CegarLoopForPetriNet]: 126 programPoint places, 37 predicate places. [2023-11-29 06:02:10,684 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 145 transitions, 493 flow [2023-11-29 06:02:10,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:02:10,684 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:02:10,684 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:02:10,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-29 06:02:10,685 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-29 06:02:10,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:02:10,685 INFO L85 PathProgramCache]: Analyzing trace with hash 1672460631, now seen corresponding path program 1 times [2023-11-29 06:02:10,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:02:10,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844069248] [2023-11-29 06:02:10,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:02:10,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:02:10,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:02:10,800 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-29 06:02:10,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:02:10,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844069248] [2023-11-29 06:02:10,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844069248] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:02:10,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:02:10,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:02:10,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125444429] [2023-11-29 06:02:10,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:02:10,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 06:02:10,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:02:10,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 06:02:10,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 06:02:10,808 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 157 [2023-11-29 06:02:10,808 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 145 transitions, 493 flow. Second operand has 5 states, 5 states have (on average 58.6) internal successors, (293), 5 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:02:10,808 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:02:10,808 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 157 [2023-11-29 06:02:10,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:02:15,657 INFO L124 PetriNetUnfolderBase]: 24306/50344 cut-off events. [2023-11-29 06:02:15,657 INFO L125 PetriNetUnfolderBase]: For 5695/5695 co-relation queries the response was YES. [2023-11-29 06:02:15,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91436 conditions, 50344 events. 24306/50344 cut-off events. For 5695/5695 co-relation queries the response was YES. Maximal size of possible extension queue 1458. Compared 524024 event pairs, 7973 based on Foata normal form. 568/46370 useless extension candidates. Maximal degree in co-relation 91296. Up to 24071 conditions per place. [2023-11-29 06:02:15,912 INFO L140 encePairwiseOnDemand]: 147/157 looper letters, 261 selfloop transitions, 13 changer transitions 0/326 dead transitions. [2023-11-29 06:02:15,912 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 326 transitions, 1509 flow [2023-11-29 06:02:15,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 06:02:15,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 06:02:15,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 588 transitions. [2023-11-29 06:02:15,914 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6242038216560509 [2023-11-29 06:02:15,914 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 588 transitions. [2023-11-29 06:02:15,914 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 588 transitions. [2023-11-29 06:02:15,914 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:02:15,914 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 588 transitions. [2023-11-29 06:02:15,916 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 98.0) internal successors, (588), 6 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:02:15,917 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 157.0) internal successors, (1099), 7 states have internal predecessors, (1099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:02:15,918 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 157.0) internal successors, (1099), 7 states have internal predecessors, (1099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:02:15,918 INFO L175 Difference]: Start difference. First operand has 163 places, 145 transitions, 493 flow. Second operand 6 states and 588 transitions. [2023-11-29 06:02:15,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 326 transitions, 1509 flow [2023-11-29 06:02:15,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 326 transitions, 1479 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 06:02:15,932 INFO L231 Difference]: Finished difference. Result has 171 places, 159 transitions, 591 flow [2023-11-29 06:02:15,932 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=485, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=591, PETRI_PLACES=171, PETRI_TRANSITIONS=159} [2023-11-29 06:02:15,932 INFO L281 CegarLoopForPetriNet]: 126 programPoint places, 45 predicate places. [2023-11-29 06:02:15,932 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 159 transitions, 591 flow [2023-11-29 06:02:15,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 58.6) internal successors, (293), 5 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:02:15,932 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:02:15,933 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 3, 2, 2, 2, 1, 1, 1, 1, 1] [2023-11-29 06:02:15,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-29 06:02:15,933 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-29 06:02:15,933 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:02:15,933 INFO L85 PathProgramCache]: Analyzing trace with hash 1102626525, now seen corresponding path program 1 times [2023-11-29 06:02:15,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:02:15,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542963301] [2023-11-29 06:02:15,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:02:15,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:02:15,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 06:02:15,955 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 06:02:15,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 06:02:15,980 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 06:02:15,980 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-29 06:02:15,980 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (22 of 23 remaining) [2023-11-29 06:02:15,980 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 23 remaining) [2023-11-29 06:02:15,980 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 23 remaining) [2023-11-29 06:02:15,980 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 23 remaining) [2023-11-29 06:02:15,981 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 23 remaining) [2023-11-29 06:02:15,981 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 23 remaining) [2023-11-29 06:02:15,981 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 23 remaining) [2023-11-29 06:02:15,981 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 23 remaining) [2023-11-29 06:02:15,981 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 23 remaining) [2023-11-29 06:02:15,981 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 23 remaining) [2023-11-29 06:02:15,981 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 23 remaining) [2023-11-29 06:02:15,982 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 23 remaining) [2023-11-29 06:02:15,982 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 23 remaining) [2023-11-29 06:02:15,982 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 23 remaining) [2023-11-29 06:02:15,982 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 23 remaining) [2023-11-29 06:02:15,982 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 23 remaining) [2023-11-29 06:02:15,982 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 23 remaining) [2023-11-29 06:02:15,982 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 23 remaining) [2023-11-29 06:02:15,982 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 23 remaining) [2023-11-29 06:02:15,983 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 23 remaining) [2023-11-29 06:02:15,983 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 23 remaining) [2023-11-29 06:02:15,983 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 23 remaining) [2023-11-29 06:02:15,983 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 23 remaining) [2023-11-29 06:02:15,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-29 06:02:15,983 INFO L445 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1, 1, 1, 1] [2023-11-29 06:02:15,984 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-29 06:02:15,984 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-29 06:02:16,025 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-29 06:02:16,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 162 places, 203 transitions, 433 flow [2023-11-29 06:02:16,070 INFO L124 PetriNetUnfolderBase]: 86/401 cut-off events. [2023-11-29 06:02:16,071 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-11-29 06:02:16,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 426 conditions, 401 events. 86/401 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1956 event pairs, 1 based on Foata normal form. 0/261 useless extension candidates. Maximal degree in co-relation 279. Up to 16 conditions per place. [2023-11-29 06:02:16,074 INFO L82 GeneralOperation]: Start removeDead. Operand has 162 places, 203 transitions, 433 flow [2023-11-29 06:02:16,079 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 162 places, 203 transitions, 433 flow [2023-11-29 06:02:16,080 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 06:02:16,081 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;@5c840992, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 06:02:16,081 INFO L358 AbstractCegarLoop]: Starting to check reachability of 27 error locations. [2023-11-29 06:02:16,082 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 06:02:16,082 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2023-11-29 06:02:16,082 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 06:02:16,083 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:02:16,083 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-29 06:02:16,083 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-11-29 06:02:16,083 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:02:16,083 INFO L85 PathProgramCache]: Analyzing trace with hash 1005976, now seen corresponding path program 1 times [2023-11-29 06:02:16,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:02:16,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774527888] [2023-11-29 06:02:16,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:02:16,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:02:16,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:02:16,106 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 06:02:16,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:02:16,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774527888] [2023-11-29 06:02:16,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774527888] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:02:16,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:02:16,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 06:02:16,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351403926] [2023-11-29 06:02:16,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:02:16,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 06:02:16,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:02:16,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 06:02:16,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 06:02:16,114 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 203 [2023-11-29 06:02:16,114 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 203 transitions, 433 flow. Second operand has 4 states, 4 states have (on average 72.75) internal successors, (291), 4 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:02:16,115 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:02:16,115 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 203 [2023-11-29 06:02:16,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand