./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread-deagle/reorder_c11_good-10.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8393723b 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_f44a7a78-10a5-4beb-ba87-fd502d40b481/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44a7a78-10a5-4beb-ba87-fd502d40b481/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44a7a78-10a5-4beb-ba87-fd502d40b481/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44a7a78-10a5-4beb-ba87-fd502d40b481/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-deagle/reorder_c11_good-10.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44a7a78-10a5-4beb-ba87-fd502d40b481/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44a7a78-10a5-4beb-ba87-fd502d40b481/bin/uautomizer-TMbwUNV5ro --witnessprinter.witness.filename witness.graphml --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 053c2020ab3922d27be669eca0e75ac8051424727a4d2b2d1ab69540cc43f0a3 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 18:29:36,981 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 18:29:36,984 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 18:29:37,017 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 18:29:37,018 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 18:29:37,019 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 18:29:37,021 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 18:29:37,023 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 18:29:37,026 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 18:29:37,027 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 18:29:37,028 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 18:29:37,030 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 18:29:37,031 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 18:29:37,032 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 18:29:37,034 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 18:29:37,036 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 18:29:37,037 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 18:29:37,038 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 18:29:37,040 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 18:29:37,043 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 18:29:37,045 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 18:29:37,056 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 18:29:37,058 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 18:29:37,059 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 18:29:37,064 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 18:29:37,064 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 18:29:37,064 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 18:29:37,066 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 18:29:37,066 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 18:29:37,068 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 18:29:37,068 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 18:29:37,069 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 18:29:37,070 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 18:29:37,071 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 18:29:37,072 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 18:29:37,073 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 18:29:37,073 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 18:29:37,074 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 18:29:37,074 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 18:29:37,075 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 18:29:37,076 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 18:29:37,077 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44a7a78-10a5-4beb-ba87-fd502d40b481/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-18 18:29:37,108 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 18:29:37,108 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 18:29:37,109 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 18:29:37,109 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 18:29:37,110 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 18:29:37,110 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 18:29:37,111 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 18:29:37,111 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 18:29:37,112 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 18:29:37,112 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 18:29:37,112 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 18:29:37,112 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 18:29:37,113 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 18:29:37,113 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 18:29:37,113 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 18:29:37,113 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 18:29:37,114 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 18:29:37,114 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 18:29:37,114 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-18 18:29:37,114 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 18:29:37,115 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 18:29:37,115 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 18:29:37,115 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 18:29:37,116 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 18:29:37,116 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 18:29:37,116 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 18:29:37,116 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:29:37,117 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 18:29:37,117 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 18:29:37,117 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 18:29:37,117 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 18:29:37,117 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 18:29:37,118 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 18:29:37,118 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 18:29:37,118 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 18:29:37,118 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_f44a7a78-10a5-4beb-ba87-fd502d40b481/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44a7a78-10a5-4beb-ba87-fd502d40b481/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 053c2020ab3922d27be669eca0e75ac8051424727a4d2b2d1ab69540cc43f0a3 [2022-11-18 18:29:37,419 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 18:29:37,466 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 18:29:37,469 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 18:29:37,470 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 18:29:37,471 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 18:29:37,473 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44a7a78-10a5-4beb-ba87-fd502d40b481/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/pthread-deagle/reorder_c11_good-10.i [2022-11-18 18:29:37,584 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44a7a78-10a5-4beb-ba87-fd502d40b481/bin/uautomizer-TMbwUNV5ro/data/c034e5fc6/f25602c16f6a4cce9b90000a71be4269/FLAG8da9f51cf [2022-11-18 18:29:38,161 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 18:29:38,161 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44a7a78-10a5-4beb-ba87-fd502d40b481/sv-benchmarks/c/pthread-deagle/reorder_c11_good-10.i [2022-11-18 18:29:38,186 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44a7a78-10a5-4beb-ba87-fd502d40b481/bin/uautomizer-TMbwUNV5ro/data/c034e5fc6/f25602c16f6a4cce9b90000a71be4269/FLAG8da9f51cf [2022-11-18 18:29:38,429 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44a7a78-10a5-4beb-ba87-fd502d40b481/bin/uautomizer-TMbwUNV5ro/data/c034e5fc6/f25602c16f6a4cce9b90000a71be4269 [2022-11-18 18:29:38,431 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 18:29:38,433 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 18:29:38,434 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 18:29:38,435 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 18:29:38,438 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 18:29:38,439 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:29:38" (1/1) ... [2022-11-18 18:29:38,440 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e373942 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:29:38, skipping insertion in model container [2022-11-18 18:29:38,441 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:29:38" (1/1) ... [2022-11-18 18:29:38,448 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 18:29:38,481 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 18:29:38,953 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44a7a78-10a5-4beb-ba87-fd502d40b481/sv-benchmarks/c/pthread-deagle/reorder_c11_good-10.i[30195,30208] [2022-11-18 18:29:38,981 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:29:38,992 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 18:29:39,059 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44a7a78-10a5-4beb-ba87-fd502d40b481/sv-benchmarks/c/pthread-deagle/reorder_c11_good-10.i[30195,30208] [2022-11-18 18:29:39,066 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:29:39,104 INFO L208 MainTranslator]: Completed translation [2022-11-18 18:29:39,104 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:29:39 WrapperNode [2022-11-18 18:29:39,104 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 18:29:39,107 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 18:29:39,107 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 18:29:39,107 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 18:29:39,120 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:29:39" (1/1) ... [2022-11-18 18:29:39,151 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:29:39" (1/1) ... [2022-11-18 18:29:39,204 INFO L138 Inliner]: procedures = 163, calls = 21, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 79 [2022-11-18 18:29:39,205 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 18:29:39,206 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 18:29:39,206 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 18:29:39,206 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 18:29:39,216 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:29:39" (1/1) ... [2022-11-18 18:29:39,217 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:29:39" (1/1) ... [2022-11-18 18:29:39,230 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:29:39" (1/1) ... [2022-11-18 18:29:39,243 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:29:39" (1/1) ... [2022-11-18 18:29:39,248 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:29:39" (1/1) ... [2022-11-18 18:29:39,252 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:29:39" (1/1) ... [2022-11-18 18:29:39,267 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:29:39" (1/1) ... [2022-11-18 18:29:39,268 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:29:39" (1/1) ... [2022-11-18 18:29:39,271 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 18:29:39,271 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 18:29:39,272 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 18:29:39,272 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 18:29:39,273 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:29:39" (1/1) ... [2022-11-18 18:29:39,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:29:39,291 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44a7a78-10a5-4beb-ba87-fd502d40b481/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:29:39,305 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44a7a78-10a5-4beb-ba87-fd502d40b481/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 18:29:39,332 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44a7a78-10a5-4beb-ba87-fd502d40b481/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 18:29:39,353 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 18:29:39,353 INFO L130 BoogieDeclarations]: Found specification of procedure setThread [2022-11-18 18:29:39,353 INFO L138 BoogieDeclarations]: Found implementation of procedure setThread [2022-11-18 18:29:39,353 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 18:29:39,354 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-18 18:29:39,354 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 18:29:39,359 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 18:29:39,359 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 18:29:39,359 INFO L130 BoogieDeclarations]: Found specification of procedure checkThread [2022-11-18 18:29:39,359 INFO L138 BoogieDeclarations]: Found implementation of procedure checkThread [2022-11-18 18:29:39,360 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 18:29:39,360 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-18 18:29:39,360 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 18:29:39,360 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 18:29:39,362 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 18:29:39,505 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 18:29:39,508 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 18:29:39,749 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 18:29:39,757 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 18:29:39,758 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2022-11-18 18:29:39,761 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:29:39 BoogieIcfgContainer [2022-11-18 18:29:39,761 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 18:29:39,764 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 18:29:39,764 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 18:29:39,768 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 18:29:39,769 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 06:29:38" (1/3) ... [2022-11-18 18:29:39,770 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65186805 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:29:39, skipping insertion in model container [2022-11-18 18:29:39,770 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:29:39" (2/3) ... [2022-11-18 18:29:39,770 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65186805 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:29:39, skipping insertion in model container [2022-11-18 18:29:39,771 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:29:39" (3/3) ... [2022-11-18 18:29:39,772 INFO L112 eAbstractionObserver]: Analyzing ICFG reorder_c11_good-10.i [2022-11-18 18:29:39,783 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 18:29:39,796 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 18:29:39,796 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-11-18 18:29:39,797 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 18:29:39,924 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-18 18:29:39,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 102 places, 106 transitions, 234 flow [2022-11-18 18:29:40,058 INFO L130 PetriNetUnfolder]: 24/236 cut-off events. [2022-11-18 18:29:40,058 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-11-18 18:29:40,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 256 conditions, 236 events. 24/236 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 745 event pairs, 0 based on Foata normal form. 0/188 useless extension candidates. Maximal degree in co-relation 116. Up to 8 conditions per place. [2022-11-18 18:29:40,066 INFO L82 GeneralOperation]: Start removeDead. Operand has 102 places, 106 transitions, 234 flow [2022-11-18 18:29:40,072 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 102 places, 106 transitions, 234 flow [2022-11-18 18:29:40,083 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 18:29:40,090 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=LoopsAndPotentialCycles, 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;@5cb0fe31, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 18:29:40,090 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2022-11-18 18:29:40,106 INFO L130 PetriNetUnfolder]: 4/58 cut-off events. [2022-11-18 18:29:40,106 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 18:29:40,106 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:29:40,107 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:29:40,108 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-18 18:29:40,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:29:40,114 INFO L85 PathProgramCache]: Analyzing trace with hash -1335782458, now seen corresponding path program 1 times [2022-11-18 18:29:40,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:29:40,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994300500] [2022-11-18 18:29:40,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:29:40,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:29:40,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:29:40,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:29:40,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:29:40,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994300500] [2022-11-18 18:29:40,579 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994300500] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:29:40,580 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:29:40,580 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:29:40,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608209871] [2022-11-18 18:29:40,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:29:40,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:29:40,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:29:40,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:29:40,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:29:40,667 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 106 [2022-11-18 18:29:40,675 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 106 transitions, 234 flow. Second operand has 4 states, 4 states have (on average 64.0) internal successors, (256), 4 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:29:40,676 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:29:40,676 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 106 [2022-11-18 18:29:40,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:29:40,841 INFO L130 PetriNetUnfolder]: 2/139 cut-off events. [2022-11-18 18:29:40,841 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-18 18:29:40,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 216 conditions, 139 events. 2/139 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 154 event pairs, 0 based on Foata normal form. 18/141 useless extension candidates. Maximal degree in co-relation 32. Up to 30 conditions per place. [2022-11-18 18:29:40,843 INFO L137 encePairwiseOnDemand]: 85/106 looper letters, 33 selfloop transitions, 9 changer transitions 14/109 dead transitions. [2022-11-18 18:29:40,844 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 109 transitions, 340 flow [2022-11-18 18:29:40,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:29:40,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 18:29:40,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 373 transitions. [2022-11-18 18:29:40,865 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7037735849056603 [2022-11-18 18:29:40,866 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 373 transitions. [2022-11-18 18:29:40,867 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 373 transitions. [2022-11-18 18:29:40,870 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:29:40,872 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 373 transitions. [2022-11-18 18:29:40,876 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 74.6) internal successors, (373), 5 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:29:40,884 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 106.0) internal successors, (636), 6 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:29:40,885 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 106.0) internal successors, (636), 6 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:29:40,888 INFO L175 Difference]: Start difference. First operand has 102 places, 106 transitions, 234 flow. Second operand 5 states and 373 transitions. [2022-11-18 18:29:40,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 109 transitions, 340 flow [2022-11-18 18:29:40,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 109 transitions, 340 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 18:29:40,897 INFO L231 Difference]: Finished difference. Result has 103 places, 86 transitions, 225 flow [2022-11-18 18:29:40,899 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=106, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=225, PETRI_PLACES=103, PETRI_TRANSITIONS=86} [2022-11-18 18:29:40,903 INFO L288 CegarLoopForPetriNet]: 102 programPoint places, 1 predicate places. [2022-11-18 18:29:40,903 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 86 transitions, 225 flow [2022-11-18 18:29:40,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 64.0) internal successors, (256), 4 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:29:40,904 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:29:40,904 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:29:40,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 18:29:40,905 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-18 18:29:40,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:29:40,906 INFO L85 PathProgramCache]: Analyzing trace with hash 1407798388, now seen corresponding path program 1 times [2022-11-18 18:29:40,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:29:40,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741904930] [2022-11-18 18:29:40,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:29:40,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:29:40,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 18:29:40,962 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 18:29:40,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 18:29:41,026 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 18:29:41,028 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-18 18:29:41,031 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2022-11-18 18:29:41,036 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 10 remaining) [2022-11-18 18:29:41,036 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 10 remaining) [2022-11-18 18:29:41,036 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 10 remaining) [2022-11-18 18:29:41,037 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 10 remaining) [2022-11-18 18:29:41,037 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 10 remaining) [2022-11-18 18:29:41,038 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 10 remaining) [2022-11-18 18:29:41,040 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 10 remaining) [2022-11-18 18:29:41,040 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 10 remaining) [2022-11-18 18:29:41,041 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 10 remaining) [2022-11-18 18:29:41,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 18:29:41,047 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-18 18:29:41,050 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-18 18:29:41,050 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-18 18:29:41,125 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2022-11-18 18:29:41,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 119 places, 124 transitions, 296 flow [2022-11-18 18:29:41,320 INFO L130 PetriNetUnfolder]: 107/802 cut-off events. [2022-11-18 18:29:41,320 INFO L131 PetriNetUnfolder]: For 72/72 co-relation queries the response was YES. [2022-11-18 18:29:41,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 899 conditions, 802 events. 107/802 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 4068 event pairs, 2 based on Foata normal form. 0/632 useless extension candidates. Maximal degree in co-relation 467. Up to 32 conditions per place. [2022-11-18 18:29:41,331 INFO L82 GeneralOperation]: Start removeDead. Operand has 119 places, 124 transitions, 296 flow [2022-11-18 18:29:41,336 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 119 places, 124 transitions, 296 flow [2022-11-18 18:29:41,344 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 18:29:41,348 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=LoopsAndPotentialCycles, 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;@5cb0fe31, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 18:29:41,349 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2022-11-18 18:29:41,355 INFO L130 PetriNetUnfolder]: 4/59 cut-off events. [2022-11-18 18:29:41,356 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 18:29:41,356 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:29:41,356 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:29:41,361 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-18 18:29:41,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:29:41,367 INFO L85 PathProgramCache]: Analyzing trace with hash -1768181364, now seen corresponding path program 1 times [2022-11-18 18:29:41,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:29:41,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251117073] [2022-11-18 18:29:41,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:29:41,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:29:41,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:29:41,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:29:41,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:29:41,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251117073] [2022-11-18 18:29:41,540 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251117073] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:29:41,541 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:29:41,541 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:29:41,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194564263] [2022-11-18 18:29:41,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:29:41,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:29:41,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:29:41,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:29:41,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:29:41,545 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 124 [2022-11-18 18:29:41,547 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 124 transitions, 296 flow. Second operand has 4 states, 4 states have (on average 73.0) internal successors, (292), 4 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) [2022-11-18 18:29:41,547 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:29:41,548 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 124 [2022-11-18 18:29:41,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:29:41,921 INFO L130 PetriNetUnfolder]: 58/741 cut-off events. [2022-11-18 18:29:41,921 INFO L131 PetriNetUnfolder]: For 90/90 co-relation queries the response was YES. [2022-11-18 18:29:41,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1202 conditions, 741 events. 58/741 cut-off events. For 90/90 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 4038 event pairs, 0 based on Foata normal form. 244/867 useless extension candidates. Maximal degree in co-relation 591. Up to 212 conditions per place. [2022-11-18 18:29:41,925 INFO L137 encePairwiseOnDemand]: 102/124 looper letters, 59 selfloop transitions, 10 changer transitions 8/141 dead transitions. [2022-11-18 18:29:41,925 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 141 transitions, 494 flow [2022-11-18 18:29:41,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:29:41,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 18:29:41,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 443 transitions. [2022-11-18 18:29:41,931 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.714516129032258 [2022-11-18 18:29:41,931 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 443 transitions. [2022-11-18 18:29:41,932 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 443 transitions. [2022-11-18 18:29:41,932 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:29:41,932 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 443 transitions. [2022-11-18 18:29:41,935 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 88.6) internal successors, (443), 5 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:29:41,939 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:29:41,940 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:29:41,940 INFO L175 Difference]: Start difference. First operand has 119 places, 124 transitions, 296 flow. Second operand 5 states and 443 transitions. [2022-11-18 18:29:41,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 141 transitions, 494 flow [2022-11-18 18:29:41,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 141 transitions, 494 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 18:29:41,951 INFO L231 Difference]: Finished difference. Result has 122 places, 112 transitions, 326 flow [2022-11-18 18:29:41,951 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=326, PETRI_PLACES=122, PETRI_TRANSITIONS=112} [2022-11-18 18:29:41,952 INFO L288 CegarLoopForPetriNet]: 119 programPoint places, 3 predicate places. [2022-11-18 18:29:41,952 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 112 transitions, 326 flow [2022-11-18 18:29:41,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 73.0) internal successors, (292), 4 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) [2022-11-18 18:29:41,953 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:29:41,954 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:29:41,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 18:29:41,954 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-18 18:29:41,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:29:41,955 INFO L85 PathProgramCache]: Analyzing trace with hash 1604792045, now seen corresponding path program 1 times [2022-11-18 18:29:41,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:29:41,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649487149] [2022-11-18 18:29:41,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:29:41,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:29:41,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:29:42,096 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:29:42,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:29:42,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649487149] [2022-11-18 18:29:42,097 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649487149] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:29:42,097 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:29:42,097 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:29:42,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414528457] [2022-11-18 18:29:42,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:29:42,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:29:42,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:29:42,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:29:42,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:29:42,100 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 124 [2022-11-18 18:29:42,101 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 112 transitions, 326 flow. Second operand has 4 states, 4 states have (on average 75.0) internal successors, (300), 4 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:29:42,101 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:29:42,101 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 124 [2022-11-18 18:29:42,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:29:42,297 INFO L130 PetriNetUnfolder]: 58/652 cut-off events. [2022-11-18 18:29:42,297 INFO L131 PetriNetUnfolder]: For 159/159 co-relation queries the response was YES. [2022-11-18 18:29:42,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1224 conditions, 652 events. 58/652 cut-off events. For 159/159 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 3319 event pairs, 16 based on Foata normal form. 1/569 useless extension candidates. Maximal degree in co-relation 693. Up to 264 conditions per place. [2022-11-18 18:29:42,302 INFO L137 encePairwiseOnDemand]: 109/124 looper letters, 31 selfloop transitions, 20 changer transitions 0/115 dead transitions. [2022-11-18 18:29:42,302 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 115 transitions, 432 flow [2022-11-18 18:29:42,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:29:42,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 18:29:42,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 401 transitions. [2022-11-18 18:29:42,304 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.646774193548387 [2022-11-18 18:29:42,304 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 401 transitions. [2022-11-18 18:29:42,304 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 401 transitions. [2022-11-18 18:29:42,304 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:29:42,304 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 401 transitions. [2022-11-18 18:29:42,306 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 80.2) internal successors, (401), 5 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:29:42,307 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:29:42,308 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:29:42,308 INFO L175 Difference]: Start difference. First operand has 122 places, 112 transitions, 326 flow. Second operand 5 states and 401 transitions. [2022-11-18 18:29:42,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 115 transitions, 432 flow [2022-11-18 18:29:42,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 115 transitions, 424 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 18:29:42,313 INFO L231 Difference]: Finished difference. Result has 117 places, 115 transitions, 386 flow [2022-11-18 18:29:42,313 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=314, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=386, PETRI_PLACES=117, PETRI_TRANSITIONS=115} [2022-11-18 18:29:42,314 INFO L288 CegarLoopForPetriNet]: 119 programPoint places, -2 predicate places. [2022-11-18 18:29:42,314 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 115 transitions, 386 flow [2022-11-18 18:29:42,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 75.0) internal successors, (300), 4 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:29:42,315 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:29:42,315 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:29:42,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 18:29:42,315 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-18 18:29:42,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:29:42,316 INFO L85 PathProgramCache]: Analyzing trace with hash -1791053776, now seen corresponding path program 1 times [2022-11-18 18:29:42,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:29:42,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927137592] [2022-11-18 18:29:42,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:29:42,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:29:42,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:29:42,422 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:29:42,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:29:42,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927137592] [2022-11-18 18:29:42,422 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927137592] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:29:42,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1229232790] [2022-11-18 18:29:42,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:29:42,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:29:42,423 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44a7a78-10a5-4beb-ba87-fd502d40b481/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:29:42,427 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44a7a78-10a5-4beb-ba87-fd502d40b481/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:29:42,445 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44a7a78-10a5-4beb-ba87-fd502d40b481/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 18:29:42,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:29:42,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 18:29:42,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:29:42,648 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:29:42,648 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:29:42,649 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1229232790] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:29:42,649 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 18:29:42,649 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-18 18:29:42,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138858159] [2022-11-18 18:29:42,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:29:42,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:29:42,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:29:42,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:29:42,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 18:29:42,653 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 124 [2022-11-18 18:29:42,654 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 115 transitions, 386 flow. Second operand has 6 states, 6 states have (on average 73.83333333333333) internal successors, (443), 6 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:29:42,654 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:29:42,654 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 124 [2022-11-18 18:29:42,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:29:42,976 INFO L130 PetriNetUnfolder]: 58/651 cut-off events. [2022-11-18 18:29:42,976 INFO L131 PetriNetUnfolder]: For 408/408 co-relation queries the response was YES. [2022-11-18 18:29:42,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1374 conditions, 651 events. 58/651 cut-off events. For 408/408 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 3317 event pairs, 0 based on Foata normal form. 1/568 useless extension candidates. Maximal degree in co-relation 775. Up to 167 conditions per place. [2022-11-18 18:29:42,982 INFO L137 encePairwiseOnDemand]: 111/124 looper letters, 53 selfloop transitions, 14 changer transitions 0/131 dead transitions. [2022-11-18 18:29:42,982 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 131 transitions, 574 flow [2022-11-18 18:29:42,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 18:29:42,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 18:29:42,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 565 transitions. [2022-11-18 18:29:42,984 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6509216589861752 [2022-11-18 18:29:42,984 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 565 transitions. [2022-11-18 18:29:42,985 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 565 transitions. [2022-11-18 18:29:42,985 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:29:42,985 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 565 transitions. [2022-11-18 18:29:42,987 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 80.71428571428571) internal successors, (565), 7 states have internal predecessors, (565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:29:42,989 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:29:42,990 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:29:42,990 INFO L175 Difference]: Start difference. First operand has 117 places, 115 transitions, 386 flow. Second operand 7 states and 565 transitions. [2022-11-18 18:29:42,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 131 transitions, 574 flow [2022-11-18 18:29:42,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 131 transitions, 550 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 18:29:42,999 INFO L231 Difference]: Finished difference. Result has 119 places, 114 transitions, 386 flow [2022-11-18 18:29:42,999 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=358, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=386, PETRI_PLACES=119, PETRI_TRANSITIONS=114} [2022-11-18 18:29:43,001 INFO L288 CegarLoopForPetriNet]: 119 programPoint places, 0 predicate places. [2022-11-18 18:29:43,002 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 114 transitions, 386 flow [2022-11-18 18:29:43,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 73.83333333333333) internal successors, (443), 6 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:29:43,003 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:29:43,003 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:29:43,016 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44a7a78-10a5-4beb-ba87-fd502d40b481/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 18:29:43,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44a7a78-10a5-4beb-ba87-fd502d40b481/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:29:43,210 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-18 18:29:43,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:29:43,210 INFO L85 PathProgramCache]: Analyzing trace with hash -1170000787, now seen corresponding path program 1 times [2022-11-18 18:29:43,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:29:43,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004191200] [2022-11-18 18:29:43,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:29:43,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:29:43,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:29:43,293 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:29:43,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:29:43,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004191200] [2022-11-18 18:29:43,294 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004191200] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:29:43,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1643401896] [2022-11-18 18:29:43,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:29:43,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:29:43,295 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44a7a78-10a5-4beb-ba87-fd502d40b481/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:29:43,310 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44a7a78-10a5-4beb-ba87-fd502d40b481/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:29:43,335 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44a7a78-10a5-4beb-ba87-fd502d40b481/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 18:29:43,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:29:43,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 18:29:43,414 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:29:43,454 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:29:43,454 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:29:43,515 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:29:43,515 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1643401896] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:29:43,515 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 18:29:43,515 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-18 18:29:43,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303341608] [2022-11-18 18:29:43,515 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 18:29:43,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 18:29:43,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:29:43,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 18:29:43,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-18 18:29:43,519 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 124 [2022-11-18 18:29:43,520 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 114 transitions, 386 flow. Second operand has 10 states, 10 states have (on average 74.5) internal successors, (745), 10 states have internal predecessors, (745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:29:43,520 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:29:43,520 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 124 [2022-11-18 18:29:43,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:29:43,604 INFO L130 PetriNetUnfolder]: 0/61 cut-off events. [2022-11-18 18:29:43,604 INFO L131 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2022-11-18 18:29:43,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121 conditions, 61 events. 0/61 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 20 event pairs, 0 based on Foata normal form. 2/63 useless extension candidates. Maximal degree in co-relation 0. Up to 6 conditions per place. [2022-11-18 18:29:43,604 INFO L137 encePairwiseOnDemand]: 119/124 looper letters, 14 selfloop transitions, 7 changer transitions 0/55 dead transitions. [2022-11-18 18:29:43,605 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 55 transitions, 206 flow [2022-11-18 18:29:43,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 18:29:43,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 18:29:43,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 662 transitions. [2022-11-18 18:29:43,607 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5931899641577061 [2022-11-18 18:29:43,607 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 662 transitions. [2022-11-18 18:29:43,608 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 662 transitions. [2022-11-18 18:29:43,608 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:29:43,608 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 662 transitions. [2022-11-18 18:29:43,610 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 73.55555555555556) internal successors, (662), 9 states have internal predecessors, (662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:29:43,612 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 124.0) internal successors, (1240), 10 states have internal predecessors, (1240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:29:43,613 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 124.0) internal successors, (1240), 10 states have internal predecessors, (1240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:29:43,613 INFO L175 Difference]: Start difference. First operand has 119 places, 114 transitions, 386 flow. Second operand 9 states and 662 transitions. [2022-11-18 18:29:43,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 55 transitions, 206 flow [2022-11-18 18:29:43,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 55 transitions, 189 flow, removed 3 selfloop flow, removed 6 redundant places. [2022-11-18 18:29:43,618 INFO L231 Difference]: Finished difference. Result has 69 places, 50 transitions, 149 flow [2022-11-18 18:29:43,620 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=135, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=149, PETRI_PLACES=69, PETRI_TRANSITIONS=50} [2022-11-18 18:29:43,626 INFO L288 CegarLoopForPetriNet]: 119 programPoint places, -50 predicate places. [2022-11-18 18:29:43,626 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 50 transitions, 149 flow [2022-11-18 18:29:43,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 74.5) internal successors, (745), 10 states have internal predecessors, (745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:29:43,627 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:29:43,627 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:29:43,638 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44a7a78-10a5-4beb-ba87-fd502d40b481/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 18:29:43,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44a7a78-10a5-4beb-ba87-fd502d40b481/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-18 18:29:43,833 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-18 18:29:43,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:29:43,834 INFO L85 PathProgramCache]: Analyzing trace with hash -2114441817, now seen corresponding path program 1 times [2022-11-18 18:29:43,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:29:43,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564844866] [2022-11-18 18:29:43,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:29:43,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:29:43,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 18:29:43,865 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 18:29:43,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 18:29:43,899 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 18:29:43,899 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-18 18:29:43,900 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2022-11-18 18:29:43,900 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 10 remaining) [2022-11-18 18:29:43,900 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 10 remaining) [2022-11-18 18:29:43,900 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 10 remaining) [2022-11-18 18:29:43,901 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 10 remaining) [2022-11-18 18:29:43,901 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 10 remaining) [2022-11-18 18:29:43,901 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 10 remaining) [2022-11-18 18:29:43,902 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 10 remaining) [2022-11-18 18:29:43,902 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 10 remaining) [2022-11-18 18:29:43,903 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 10 remaining) [2022-11-18 18:29:43,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 18:29:43,904 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-11-18 18:29:43,904 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-18 18:29:43,905 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-18 18:29:43,964 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2022-11-18 18:29:43,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 136 places, 142 transitions, 362 flow [2022-11-18 18:29:44,417 INFO L130 PetriNetUnfolder]: 496/2832 cut-off events. [2022-11-18 18:29:44,417 INFO L131 PetriNetUnfolder]: For 419/419 co-relation queries the response was YES. [2022-11-18 18:29:44,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3283 conditions, 2832 events. 496/2832 cut-off events. For 419/419 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 19891 event pairs, 64 based on Foata normal form. 0/2242 useless extension candidates. Maximal degree in co-relation 1682. Up to 192 conditions per place. [2022-11-18 18:29:44,437 INFO L82 GeneralOperation]: Start removeDead. Operand has 136 places, 142 transitions, 362 flow [2022-11-18 18:29:44,451 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 136 places, 142 transitions, 362 flow [2022-11-18 18:29:44,452 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 18:29:44,453 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=LoopsAndPotentialCycles, 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;@5cb0fe31, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 18:29:44,453 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2022-11-18 18:29:44,458 INFO L130 PetriNetUnfolder]: 4/59 cut-off events. [2022-11-18 18:29:44,458 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 18:29:44,458 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:29:44,459 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:29:44,459 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-18 18:29:44,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:29:44,459 INFO L85 PathProgramCache]: Analyzing trace with hash 1747318180, now seen corresponding path program 1 times [2022-11-18 18:29:44,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:29:44,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928160846] [2022-11-18 18:29:44,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:29:44,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:29:44,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:29:44,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:29:44,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:29:44,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928160846] [2022-11-18 18:29:44,551 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928160846] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:29:44,551 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:29:44,556 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:29:44,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582535284] [2022-11-18 18:29:44,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:29:44,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:29:44,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:29:44,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:29:44,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:29:44,558 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 142 [2022-11-18 18:29:44,559 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 142 transitions, 362 flow. Second operand has 4 states, 4 states have (on average 82.0) internal successors, (328), 4 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:29:44,559 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:29:44,559 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 142 [2022-11-18 18:29:44,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:29:45,374 INFO L130 PetriNetUnfolder]: 444/3249 cut-off events. [2022-11-18 18:29:45,375 INFO L131 PetriNetUnfolder]: For 592/592 co-relation queries the response was YES. [2022-11-18 18:29:45,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5484 conditions, 3249 events. 444/3249 cut-off events. For 592/592 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 27769 event pairs, 10 based on Foata normal form. 1641/4360 useless extension candidates. Maximal degree in co-relation 2717. Up to 1064 conditions per place. [2022-11-18 18:29:45,398 INFO L137 encePairwiseOnDemand]: 119/142 looper letters, 69 selfloop transitions, 10 changer transitions 8/160 dead transitions. [2022-11-18 18:29:45,398 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 160 transitions, 594 flow [2022-11-18 18:29:45,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:29:45,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 18:29:45,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 500 transitions. [2022-11-18 18:29:45,401 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.704225352112676 [2022-11-18 18:29:45,401 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 500 transitions. [2022-11-18 18:29:45,401 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 500 transitions. [2022-11-18 18:29:45,402 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:29:45,402 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 500 transitions. [2022-11-18 18:29:45,403 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:29:45,407 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 142.0) internal successors, (852), 6 states have internal predecessors, (852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:29:45,408 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 142.0) internal successors, (852), 6 states have internal predecessors, (852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:29:45,408 INFO L175 Difference]: Start difference. First operand has 136 places, 142 transitions, 362 flow. Second operand 5 states and 500 transitions. [2022-11-18 18:29:45,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 160 transitions, 594 flow [2022-11-18 18:29:45,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 160 transitions, 594 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 18:29:45,413 INFO L231 Difference]: Finished difference. Result has 137 places, 127 transitions, 386 flow [2022-11-18 18:29:45,414 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=386, PETRI_PLACES=137, PETRI_TRANSITIONS=127} [2022-11-18 18:29:45,415 INFO L288 CegarLoopForPetriNet]: 136 programPoint places, 1 predicate places. [2022-11-18 18:29:45,416 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 127 transitions, 386 flow [2022-11-18 18:29:45,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 82.0) internal successors, (328), 4 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:29:45,416 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:29:45,416 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:29:45,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 18:29:45,417 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-18 18:29:45,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:29:45,417 INFO L85 PathProgramCache]: Analyzing trace with hash 1620439569, now seen corresponding path program 1 times [2022-11-18 18:29:45,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:29:45,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907771567] [2022-11-18 18:29:45,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:29:45,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:29:45,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:29:45,488 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:29:45,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:29:45,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907771567] [2022-11-18 18:29:45,489 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907771567] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:29:45,489 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:29:45,489 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:29:45,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180994402] [2022-11-18 18:29:45,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:29:45,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:29:45,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:29:45,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:29:45,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:29:45,491 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 142 [2022-11-18 18:29:45,492 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 127 transitions, 386 flow. Second operand has 4 states, 4 states have (on average 84.0) internal successors, (336), 4 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:29:45,492 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:29:45,492 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 142 [2022-11-18 18:29:45,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:29:46,150 INFO L130 PetriNetUnfolder]: 444/2791 cut-off events. [2022-11-18 18:29:46,151 INFO L131 PetriNetUnfolder]: For 870/870 co-relation queries the response was YES. [2022-11-18 18:29:46,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5425 conditions, 2791 events. 444/2791 cut-off events. For 870/870 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 22413 event pairs, 109 based on Foata normal form. 2/2399 useless extension candidates. Maximal degree in co-relation 2859. Up to 1267 conditions per place. [2022-11-18 18:29:46,174 INFO L137 encePairwiseOnDemand]: 127/142 looper letters, 37 selfloop transitions, 20 changer transitions 0/130 dead transitions. [2022-11-18 18:29:46,174 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 130 transitions, 504 flow [2022-11-18 18:29:46,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:29:46,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 18:29:46,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 452 transitions. [2022-11-18 18:29:46,176 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6366197183098592 [2022-11-18 18:29:46,177 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 452 transitions. [2022-11-18 18:29:46,177 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 452 transitions. [2022-11-18 18:29:46,177 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:29:46,177 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 452 transitions. [2022-11-18 18:29:46,179 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 90.4) internal successors, (452), 5 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:29:46,180 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 142.0) internal successors, (852), 6 states have internal predecessors, (852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:29:46,181 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 142.0) internal successors, (852), 6 states have internal predecessors, (852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:29:46,181 INFO L175 Difference]: Start difference. First operand has 137 places, 127 transitions, 386 flow. Second operand 5 states and 452 transitions. [2022-11-18 18:29:46,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 130 transitions, 504 flow [2022-11-18 18:29:46,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 130 transitions, 496 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 18:29:46,187 INFO L231 Difference]: Finished difference. Result has 132 places, 130 transitions, 446 flow [2022-11-18 18:29:46,188 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=374, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=446, PETRI_PLACES=132, PETRI_TRANSITIONS=130} [2022-11-18 18:29:46,189 INFO L288 CegarLoopForPetriNet]: 136 programPoint places, -4 predicate places. [2022-11-18 18:29:46,190 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 130 transitions, 446 flow [2022-11-18 18:29:46,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 84.0) internal successors, (336), 4 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:29:46,190 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:29:46,190 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:29:46,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-18 18:29:46,191 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-18 18:29:46,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:29:46,192 INFO L85 PathProgramCache]: Analyzing trace with hash -1305980392, now seen corresponding path program 1 times [2022-11-18 18:29:46,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:29:46,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698254502] [2022-11-18 18:29:46,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:29:46,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:29:46,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:29:46,327 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:29:46,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:29:46,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698254502] [2022-11-18 18:29:46,328 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698254502] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:29:46,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1355004661] [2022-11-18 18:29:46,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:29:46,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:29:46,329 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44a7a78-10a5-4beb-ba87-fd502d40b481/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:29:46,330 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44a7a78-10a5-4beb-ba87-fd502d40b481/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:29:46,368 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44a7a78-10a5-4beb-ba87-fd502d40b481/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 18:29:46,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:29:46,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 18:29:46,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:29:46,532 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:29:46,533 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:29:46,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1355004661] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:29:46,533 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 18:29:46,533 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-18 18:29:46,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71393349] [2022-11-18 18:29:46,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:29:46,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:29:46,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:29:46,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:29:46,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 18:29:46,537 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 142 [2022-11-18 18:29:46,538 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 130 transitions, 446 flow. Second operand has 6 states, 6 states have (on average 82.83333333333333) internal successors, (497), 6 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:29:46,538 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:29:46,538 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 142 [2022-11-18 18:29:46,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:29:47,251 INFO L130 PetriNetUnfolder]: 444/2789 cut-off events. [2022-11-18 18:29:47,251 INFO L131 PetriNetUnfolder]: For 1997/1997 co-relation queries the response was YES. [2022-11-18 18:29:47,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6024 conditions, 2789 events. 444/2789 cut-off events. For 1997/1997 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 22375 event pairs, 10 based on Foata normal form. 2/2397 useless extension candidates. Maximal degree in co-relation 3161. Up to 909 conditions per place. [2022-11-18 18:29:47,285 INFO L137 encePairwiseOnDemand]: 129/142 looper letters, 63 selfloop transitions, 14 changer transitions 0/150 dead transitions. [2022-11-18 18:29:47,286 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 150 transitions, 674 flow [2022-11-18 18:29:47,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 18:29:47,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 18:29:47,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 638 transitions. [2022-11-18 18:29:47,289 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.641851106639839 [2022-11-18 18:29:47,289 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 638 transitions. [2022-11-18 18:29:47,289 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 638 transitions. [2022-11-18 18:29:47,290 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:29:47,290 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 638 transitions. [2022-11-18 18:29:47,292 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 91.14285714285714) internal successors, (638), 7 states have internal predecessors, (638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:29:47,295 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 142.0) internal successors, (1136), 8 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:29:47,297 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 142.0) internal successors, (1136), 8 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:29:47,297 INFO L175 Difference]: Start difference. First operand has 132 places, 130 transitions, 446 flow. Second operand 7 states and 638 transitions. [2022-11-18 18:29:47,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 150 transitions, 674 flow [2022-11-18 18:29:47,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 150 transitions, 650 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 18:29:47,306 INFO L231 Difference]: Finished difference. Result has 134 places, 129 transitions, 446 flow [2022-11-18 18:29:47,306 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=418, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=446, PETRI_PLACES=134, PETRI_TRANSITIONS=129} [2022-11-18 18:29:47,308 INFO L288 CegarLoopForPetriNet]: 136 programPoint places, -2 predicate places. [2022-11-18 18:29:47,308 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 129 transitions, 446 flow [2022-11-18 18:29:47,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 82.83333333333333) internal successors, (497), 6 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:29:47,309 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:29:47,309 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:29:47,321 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44a7a78-10a5-4beb-ba87-fd502d40b481/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 18:29:47,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44a7a78-10a5-4beb-ba87-fd502d40b481/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:29:47,515 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-18 18:29:47,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:29:47,516 INFO L85 PathProgramCache]: Analyzing trace with hash -1065731438, now seen corresponding path program 1 times [2022-11-18 18:29:47,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:29:47,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590801377] [2022-11-18 18:29:47,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:29:47,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:29:47,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:29:47,588 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:29:47,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:29:47,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590801377] [2022-11-18 18:29:47,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590801377] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:29:47,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [8745631] [2022-11-18 18:29:47,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:29:47,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:29:47,590 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44a7a78-10a5-4beb-ba87-fd502d40b481/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:29:47,591 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44a7a78-10a5-4beb-ba87-fd502d40b481/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:29:47,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44a7a78-10a5-4beb-ba87-fd502d40b481/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 18:29:47,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:29:47,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 18:29:47,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:29:47,741 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:29:47,741 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:29:47,782 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:29:47,783 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [8745631] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:29:47,783 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 18:29:47,783 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-18 18:29:47,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607128818] [2022-11-18 18:29:47,783 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 18:29:47,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 18:29:47,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:29:47,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 18:29:47,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-18 18:29:47,785 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 142 [2022-11-18 18:29:47,786 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 129 transitions, 446 flow. Second operand has 10 states, 10 states have (on average 83.5) internal successors, (835), 10 states have internal predecessors, (835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:29:47,787 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:29:47,787 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 142 [2022-11-18 18:29:47,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:29:48,503 INFO L130 PetriNetUnfolder]: 423/2503 cut-off events. [2022-11-18 18:29:48,503 INFO L131 PetriNetUnfolder]: For 1647/1647 co-relation queries the response was YES. [2022-11-18 18:29:48,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5493 conditions, 2503 events. 423/2503 cut-off events. For 1647/1647 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 19914 event pairs, 35 based on Foata normal form. 2/2157 useless extension candidates. Maximal degree in co-relation 5364. Up to 482 conditions per place. [2022-11-18 18:29:48,522 INFO L137 encePairwiseOnDemand]: 127/142 looper letters, 64 selfloop transitions, 21 changer transitions 0/158 dead transitions. [2022-11-18 18:29:48,523 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 158 transitions, 726 flow [2022-11-18 18:29:48,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 18:29:48,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-18 18:29:48,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 887 transitions. [2022-11-18 18:29:48,526 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6246478873239436 [2022-11-18 18:29:48,527 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 887 transitions. [2022-11-18 18:29:48,527 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 887 transitions. [2022-11-18 18:29:48,528 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:29:48,528 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 887 transitions. [2022-11-18 18:29:48,530 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 88.7) internal successors, (887), 10 states have internal predecessors, (887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:29:48,533 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 142.0) internal successors, (1562), 11 states have internal predecessors, (1562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:29:48,534 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 142.0) internal successors, (1562), 11 states have internal predecessors, (1562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:29:48,534 INFO L175 Difference]: Start difference. First operand has 134 places, 129 transitions, 446 flow. Second operand 10 states and 887 transitions. [2022-11-18 18:29:48,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 158 transitions, 726 flow [2022-11-18 18:29:48,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 158 transitions, 708 flow, removed 2 selfloop flow, removed 4 redundant places. [2022-11-18 18:29:48,543 INFO L231 Difference]: Finished difference. Result has 143 places, 133 transitions, 526 flow [2022-11-18 18:29:48,543 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=430, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=526, PETRI_PLACES=143, PETRI_TRANSITIONS=133} [2022-11-18 18:29:48,544 INFO L288 CegarLoopForPetriNet]: 136 programPoint places, 7 predicate places. [2022-11-18 18:29:48,544 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 133 transitions, 526 flow [2022-11-18 18:29:48,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 83.5) internal successors, (835), 10 states have internal predecessors, (835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:29:48,545 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:29:48,545 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:29:48,552 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44a7a78-10a5-4beb-ba87-fd502d40b481/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 18:29:48,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44a7a78-10a5-4beb-ba87-fd502d40b481/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:29:48,752 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-18 18:29:48,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:29:48,753 INFO L85 PathProgramCache]: Analyzing trace with hash -1422189243, now seen corresponding path program 1 times [2022-11-18 18:29:48,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:29:48,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258631781] [2022-11-18 18:29:48,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:29:48,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:29:48,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 18:29:48,773 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 18:29:48,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 18:29:48,795 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 18:29:48,795 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-18 18:29:48,795 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2022-11-18 18:29:48,795 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 10 remaining) [2022-11-18 18:29:48,796 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 10 remaining) [2022-11-18 18:29:48,796 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 10 remaining) [2022-11-18 18:29:48,796 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 10 remaining) [2022-11-18 18:29:48,796 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 10 remaining) [2022-11-18 18:29:48,796 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 10 remaining) [2022-11-18 18:29:48,797 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 10 remaining) [2022-11-18 18:29:48,797 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 10 remaining) [2022-11-18 18:29:48,797 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 10 remaining) [2022-11-18 18:29:48,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-18 18:29:48,798 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-11-18 18:29:48,798 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-18 18:29:48,799 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-11-18 18:29:48,835 INFO L144 ThreadInstanceAdder]: Constructed 16 joinOtherThreadTransitions. [2022-11-18 18:29:48,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 153 places, 160 transitions, 432 flow [2022-11-18 18:29:50,635 INFO L130 PetriNetUnfolder]: 2379/10862 cut-off events. [2022-11-18 18:29:50,635 INFO L131 PetriNetUnfolder]: For 2144/2144 co-relation queries the response was YES. [2022-11-18 18:29:50,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13027 conditions, 10862 events. 2379/10862 cut-off events. For 2144/2144 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 100503 event pairs, 626 based on Foata normal form. 0/8690 useless extension candidates. Maximal degree in co-relation 6464. Up to 1024 conditions per place. [2022-11-18 18:29:50,730 INFO L82 GeneralOperation]: Start removeDead. Operand has 153 places, 160 transitions, 432 flow [2022-11-18 18:29:50,786 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 153 places, 160 transitions, 432 flow [2022-11-18 18:29:50,788 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 18:29:50,788 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=LoopsAndPotentialCycles, 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;@5cb0fe31, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 18:29:50,788 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2022-11-18 18:29:50,794 INFO L130 PetriNetUnfolder]: 4/60 cut-off events. [2022-11-18 18:29:50,795 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 18:29:50,795 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:29:50,795 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:29:50,795 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-18 18:29:50,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:29:50,796 INFO L85 PathProgramCache]: Analyzing trace with hash 620781582, now seen corresponding path program 1 times [2022-11-18 18:29:50,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:29:50,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568355426] [2022-11-18 18:29:50,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:29:50,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:29:50,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:29:50,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:29:50,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:29:50,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568355426] [2022-11-18 18:29:50,863 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568355426] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:29:50,863 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:29:50,863 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:29:50,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412053973] [2022-11-18 18:29:50,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:29:50,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:29:50,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:29:50,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:29:50,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:29:50,866 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 160 [2022-11-18 18:29:50,867 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 160 transitions, 432 flow. Second operand has 4 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) [2022-11-18 18:29:50,867 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:29:50,867 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 160 [2022-11-18 18:29:50,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:29:53,334 INFO L130 PetriNetUnfolder]: 2570/13543 cut-off events. [2022-11-18 18:29:53,334 INFO L131 PetriNetUnfolder]: For 3152/3152 co-relation queries the response was YES. [2022-11-18 18:29:53,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23829 conditions, 13543 events. 2570/13543 cut-off events. For 3152/3152 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 147664 event pairs, 152 based on Foata normal form. 8872/20287 useless extension candidates. Maximal degree in co-relation 11646. Up to 4858 conditions per place. [2022-11-18 18:29:53,569 INFO L137 encePairwiseOnDemand]: 136/160 looper letters, 79 selfloop transitions, 10 changer transitions 8/179 dead transitions. [2022-11-18 18:29:53,569 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 179 transitions, 698 flow [2022-11-18 18:29:53,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:29:53,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 18:29:53,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 557 transitions. [2022-11-18 18:29:53,574 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.69625 [2022-11-18 18:29:53,574 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 557 transitions. [2022-11-18 18:29:53,574 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 557 transitions. [2022-11-18 18:29:53,574 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:29:53,575 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 557 transitions. [2022-11-18 18:29:53,576 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 111.4) internal successors, (557), 5 states have internal predecessors, (557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:29:53,578 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 160.0) internal successors, (960), 6 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:29:53,579 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 160.0) internal successors, (960), 6 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:29:53,579 INFO L175 Difference]: Start difference. First operand has 153 places, 160 transitions, 432 flow. Second operand 5 states and 557 transitions. [2022-11-18 18:29:53,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 179 transitions, 698 flow [2022-11-18 18:29:53,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 179 transitions, 698 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 18:29:53,588 INFO L231 Difference]: Finished difference. Result has 152 places, 142 transitions, 450 flow [2022-11-18 18:29:53,590 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=400, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=450, PETRI_PLACES=152, PETRI_TRANSITIONS=142} [2022-11-18 18:29:53,591 INFO L288 CegarLoopForPetriNet]: 153 programPoint places, -1 predicate places. [2022-11-18 18:29:53,591 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 142 transitions, 450 flow [2022-11-18 18:29:53,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 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) [2022-11-18 18:29:53,591 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:29:53,592 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:29:53,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-18 18:29:53,592 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-18 18:29:53,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:29:53,593 INFO L85 PathProgramCache]: Analyzing trace with hash 1880264199, now seen corresponding path program 1 times [2022-11-18 18:29:53,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:29:53,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33501940] [2022-11-18 18:29:53,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:29:53,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:29:53,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:29:53,651 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:29:53,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:29:53,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33501940] [2022-11-18 18:29:53,652 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33501940] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:29:53,652 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:29:53,652 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:29:53,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339888937] [2022-11-18 18:29:53,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:29:53,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:29:53,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:29:53,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:29:53,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:29:53,655 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 160 [2022-11-18 18:29:53,655 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 142 transitions, 450 flow. Second operand has 4 states, 4 states have (on average 93.0) internal successors, (372), 4 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:29:53,656 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:29:53,656 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 160 [2022-11-18 18:29:53,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:29:55,787 INFO L130 PetriNetUnfolder]: 2570/11564 cut-off events. [2022-11-18 18:29:55,788 INFO L131 PetriNetUnfolder]: For 4233/4233 co-relation queries the response was YES. [2022-11-18 18:29:55,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23295 conditions, 11564 events. 2570/11564 cut-off events. For 4233/4233 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 118419 event pairs, 618 based on Foata normal form. 3/9967 useless extension candidates. Maximal degree in co-relation 12088. Up to 5766 conditions per place. [2022-11-18 18:29:55,942 INFO L137 encePairwiseOnDemand]: 145/160 looper letters, 43 selfloop transitions, 20 changer transitions 0/145 dead transitions. [2022-11-18 18:29:55,942 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 145 transitions, 580 flow [2022-11-18 18:29:55,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:29:55,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 18:29:55,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 503 transitions. [2022-11-18 18:29:55,945 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.62875 [2022-11-18 18:29:55,945 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 503 transitions. [2022-11-18 18:29:55,946 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 503 transitions. [2022-11-18 18:29:55,946 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:29:55,946 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 503 transitions. [2022-11-18 18:29:55,948 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 100.6) internal successors, (503), 5 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:29:55,951 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 160.0) internal successors, (960), 6 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:29:55,951 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 160.0) internal successors, (960), 6 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:29:55,952 INFO L175 Difference]: Start difference. First operand has 152 places, 142 transitions, 450 flow. Second operand 5 states and 503 transitions. [2022-11-18 18:29:55,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 145 transitions, 580 flow [2022-11-18 18:29:55,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 145 transitions, 572 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 18:29:55,966 INFO L231 Difference]: Finished difference. Result has 147 places, 145 transitions, 510 flow [2022-11-18 18:29:55,966 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=438, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=510, PETRI_PLACES=147, PETRI_TRANSITIONS=145} [2022-11-18 18:29:55,967 INFO L288 CegarLoopForPetriNet]: 153 programPoint places, -6 predicate places. [2022-11-18 18:29:55,967 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 145 transitions, 510 flow [2022-11-18 18:29:55,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 93.0) internal successors, (372), 4 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:29:55,968 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:29:55,968 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:29:55,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-18 18:29:55,969 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-18 18:29:55,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:29:55,970 INFO L85 PathProgramCache]: Analyzing trace with hash -1841351296, now seen corresponding path program 1 times [2022-11-18 18:29:55,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:29:55,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231297951] [2022-11-18 18:29:55,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:29:55,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:29:55,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:29:56,080 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:29:56,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:29:56,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231297951] [2022-11-18 18:29:56,081 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231297951] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:29:56,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1451007543] [2022-11-18 18:29:56,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:29:56,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:29:56,082 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44a7a78-10a5-4beb-ba87-fd502d40b481/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:29:56,083 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44a7a78-10a5-4beb-ba87-fd502d40b481/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:29:56,105 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44a7a78-10a5-4beb-ba87-fd502d40b481/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 18:29:56,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:29:56,197 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 18:29:56,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:29:56,266 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:29:56,266 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:29:56,266 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1451007543] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:29:56,266 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 18:29:56,267 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-18 18:29:56,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44999043] [2022-11-18 18:29:56,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:29:56,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:29:56,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:29:56,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:29:56,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 18:29:56,270 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 160 [2022-11-18 18:29:56,271 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 145 transitions, 510 flow. Second operand has 6 states, 6 states have (on average 91.83333333333333) internal successors, (551), 6 states have internal predecessors, (551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:29:56,271 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:29:56,271 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 160 [2022-11-18 18:29:56,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:29:58,212 INFO L130 PetriNetUnfolder]: 2570/11561 cut-off events. [2022-11-18 18:29:58,212 INFO L131 PetriNetUnfolder]: For 8768/8768 co-relation queries the response was YES. [2022-11-18 18:29:58,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25647 conditions, 11561 events. 2570/11561 cut-off events. For 8768/8768 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 118410 event pairs, 152 based on Foata normal form. 3/9964 useless extension candidates. Maximal degree in co-relation 13258. Up to 4303 conditions per place. [2022-11-18 18:29:58,333 INFO L137 encePairwiseOnDemand]: 147/160 looper letters, 73 selfloop transitions, 14 changer transitions 0/169 dead transitions. [2022-11-18 18:29:58,333 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 169 transitions, 778 flow [2022-11-18 18:29:58,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 18:29:58,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 18:29:58,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 711 transitions. [2022-11-18 18:29:58,336 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6348214285714285 [2022-11-18 18:29:58,336 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 711 transitions. [2022-11-18 18:29:58,336 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 711 transitions. [2022-11-18 18:29:58,337 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:29:58,339 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 711 transitions. [2022-11-18 18:29:58,341 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 101.57142857142857) internal successors, (711), 7 states have internal predecessors, (711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:29:58,344 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 160.0) internal successors, (1280), 8 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:29:58,344 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 160.0) internal successors, (1280), 8 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:29:58,344 INFO L175 Difference]: Start difference. First operand has 147 places, 145 transitions, 510 flow. Second operand 7 states and 711 transitions. [2022-11-18 18:29:58,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 169 transitions, 778 flow [2022-11-18 18:29:58,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 169 transitions, 754 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 18:29:58,365 INFO L231 Difference]: Finished difference. Result has 149 places, 144 transitions, 510 flow [2022-11-18 18:29:58,365 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=482, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=510, PETRI_PLACES=149, PETRI_TRANSITIONS=144} [2022-11-18 18:29:58,366 INFO L288 CegarLoopForPetriNet]: 153 programPoint places, -4 predicate places. [2022-11-18 18:29:58,366 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 144 transitions, 510 flow [2022-11-18 18:29:58,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 91.83333333333333) internal successors, (551), 6 states have internal predecessors, (551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:29:58,366 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:29:58,367 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:29:58,378 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44a7a78-10a5-4beb-ba87-fd502d40b481/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-18 18:29:58,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44a7a78-10a5-4beb-ba87-fd502d40b481/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-18 18:29:58,572 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-18 18:29:58,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:29:58,573 INFO L85 PathProgramCache]: Analyzing trace with hash 1764503369, now seen corresponding path program 1 times [2022-11-18 18:29:58,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:29:58,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806854888] [2022-11-18 18:29:58,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:29:58,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:29:58,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:29:58,645 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:29:58,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:29:58,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806854888] [2022-11-18 18:29:58,646 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806854888] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:29:58,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1360503655] [2022-11-18 18:29:58,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:29:58,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:29:58,648 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44a7a78-10a5-4beb-ba87-fd502d40b481/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:29:58,649 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44a7a78-10a5-4beb-ba87-fd502d40b481/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:29:58,678 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44a7a78-10a5-4beb-ba87-fd502d40b481/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-18 18:29:58,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:29:58,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 18:29:58,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:29:58,826 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:29:58,827 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:29:58,879 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:29:58,879 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1360503655] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:29:58,879 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 18:29:58,879 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-18 18:29:58,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881949131] [2022-11-18 18:29:58,881 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 18:29:58,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 18:29:58,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:29:58,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 18:29:58,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-18 18:29:58,883 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 160 [2022-11-18 18:29:58,885 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 144 transitions, 510 flow. Second operand has 10 states, 10 states have (on average 92.5) internal successors, (925), 10 states have internal predecessors, (925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:29:58,885 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:29:58,885 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 160 [2022-11-18 18:29:58,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:30:00,730 INFO L130 PetriNetUnfolder]: 2538/11157 cut-off events. [2022-11-18 18:30:00,730 INFO L131 PetriNetUnfolder]: For 7602/7602 co-relation queries the response was YES. [2022-11-18 18:30:00,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24922 conditions, 11157 events. 2538/11157 cut-off events. For 7602/7602 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 117293 event pairs, 214 based on Foata normal form. 2/9627 useless extension candidates. Maximal degree in co-relation 13282. Up to 2161 conditions per place. [2022-11-18 18:30:00,855 INFO L137 encePairwiseOnDemand]: 145/160 looper letters, 74 selfloop transitions, 21 changer transitions 0/177 dead transitions. [2022-11-18 18:30:00,856 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 177 transitions, 830 flow [2022-11-18 18:30:00,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 18:30:00,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-18 18:30:00,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 987 transitions. [2022-11-18 18:30:00,859 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.616875 [2022-11-18 18:30:00,860 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 987 transitions. [2022-11-18 18:30:00,860 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 987 transitions. [2022-11-18 18:30:00,861 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:30:00,861 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 987 transitions. [2022-11-18 18:30:00,864 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 98.7) internal successors, (987), 10 states have internal predecessors, (987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:00,867 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 160.0) internal successors, (1760), 11 states have internal predecessors, (1760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:00,868 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 160.0) internal successors, (1760), 11 states have internal predecessors, (1760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:00,868 INFO L175 Difference]: Start difference. First operand has 149 places, 144 transitions, 510 flow. Second operand 10 states and 987 transitions. [2022-11-18 18:30:00,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 177 transitions, 830 flow [2022-11-18 18:30:00,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 177 transitions, 812 flow, removed 2 selfloop flow, removed 4 redundant places. [2022-11-18 18:30:00,887 INFO L231 Difference]: Finished difference. Result has 158 places, 148 transitions, 590 flow [2022-11-18 18:30:00,888 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=494, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=590, PETRI_PLACES=158, PETRI_TRANSITIONS=148} [2022-11-18 18:30:00,890 INFO L288 CegarLoopForPetriNet]: 153 programPoint places, 5 predicate places. [2022-11-18 18:30:00,890 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 148 transitions, 590 flow [2022-11-18 18:30:00,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 92.5) internal successors, (925), 10 states have internal predecessors, (925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:00,891 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:30:00,891 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:30:00,903 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44a7a78-10a5-4beb-ba87-fd502d40b481/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-18 18:30:01,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44a7a78-10a5-4beb-ba87-fd502d40b481/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-18 18:30:01,097 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-18 18:30:01,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:30:01,098 INFO L85 PathProgramCache]: Analyzing trace with hash 1792905212, now seen corresponding path program 1 times [2022-11-18 18:30:01,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:30:01,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043604032] [2022-11-18 18:30:01,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:30:01,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:30:01,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:30:01,165 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-11-18 18:30:01,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:30:01,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043604032] [2022-11-18 18:30:01,166 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043604032] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:30:01,166 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:30:01,166 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:30:01,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974165004] [2022-11-18 18:30:01,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:30:01,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:30:01,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:30:01,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:30:01,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:30:01,168 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 160 [2022-11-18 18:30:01,169 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 148 transitions, 590 flow. Second operand has 4 states, 4 states have (on average 93.25) internal successors, (373), 4 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:01,169 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:30:01,169 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 160 [2022-11-18 18:30:01,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:30:03,690 INFO L130 PetriNetUnfolder]: 2538/11153 cut-off events. [2022-11-18 18:30:03,690 INFO L131 PetriNetUnfolder]: For 14122/14122 co-relation queries the response was YES. [2022-11-18 18:30:03,774 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27264 conditions, 11153 events. 2538/11153 cut-off events. For 14122/14122 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 117308 event pairs, 214 based on Foata normal form. 0/9625 useless extension candidates. Maximal degree in co-relation 14480. Up to 4554 conditions per place. [2022-11-18 18:30:03,822 INFO L137 encePairwiseOnDemand]: 148/160 looper letters, 82 selfloop transitions, 10 changer transitions 0/174 dead transitions. [2022-11-18 18:30:03,822 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 174 transitions, 874 flow [2022-11-18 18:30:03,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:30:03,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 18:30:03,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 536 transitions. [2022-11-18 18:30:03,825 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.67 [2022-11-18 18:30:03,826 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 536 transitions. [2022-11-18 18:30:03,826 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 536 transitions. [2022-11-18 18:30:03,827 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:30:03,827 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 536 transitions. [2022-11-18 18:30:03,829 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 107.2) internal successors, (536), 5 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:03,831 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 160.0) internal successors, (960), 6 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:03,832 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 160.0) internal successors, (960), 6 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:03,832 INFO L175 Difference]: Start difference. First operand has 158 places, 148 transitions, 590 flow. Second operand 5 states and 536 transitions. [2022-11-18 18:30:03,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 174 transitions, 874 flow [2022-11-18 18:30:03,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 174 transitions, 850 flow, removed 5 selfloop flow, removed 4 redundant places. [2022-11-18 18:30:03,873 INFO L231 Difference]: Finished difference. Result has 161 places, 150 transitions, 610 flow [2022-11-18 18:30:03,874 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=566, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=610, PETRI_PLACES=161, PETRI_TRANSITIONS=150} [2022-11-18 18:30:03,875 INFO L288 CegarLoopForPetriNet]: 153 programPoint places, 8 predicate places. [2022-11-18 18:30:03,875 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 150 transitions, 610 flow [2022-11-18 18:30:03,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 93.25) internal successors, (373), 4 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:03,876 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:30:03,876 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:30:03,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-18 18:30:03,877 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-18 18:30:03,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:30:03,877 INFO L85 PathProgramCache]: Analyzing trace with hash 1648976718, now seen corresponding path program 1 times [2022-11-18 18:30:03,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:30:03,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326442593] [2022-11-18 18:30:03,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:30:03,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:30:03,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 18:30:03,907 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 18:30:03,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 18:30:03,932 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 18:30:03,932 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-18 18:30:03,932 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2022-11-18 18:30:03,933 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 10 remaining) [2022-11-18 18:30:03,933 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 10 remaining) [2022-11-18 18:30:03,933 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 10 remaining) [2022-11-18 18:30:03,933 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 10 remaining) [2022-11-18 18:30:03,934 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 10 remaining) [2022-11-18 18:30:03,934 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 10 remaining) [2022-11-18 18:30:03,934 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 10 remaining) [2022-11-18 18:30:03,934 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 10 remaining) [2022-11-18 18:30:03,935 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 10 remaining) [2022-11-18 18:30:03,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-18 18:30:03,935 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-11-18 18:30:03,936 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-18 18:30:03,936 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2022-11-18 18:30:03,984 INFO L144 ThreadInstanceAdder]: Constructed 20 joinOtherThreadTransitions. [2022-11-18 18:30:03,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 170 places, 178 transitions, 506 flow [2022-11-18 18:30:11,787 INFO L130 PetriNetUnfolder]: 11372/43900 cut-off events. [2022-11-18 18:30:11,787 INFO L131 PetriNetUnfolder]: For 10450/10450 co-relation queries the response was YES. [2022-11-18 18:30:12,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54326 conditions, 43900 events. 11372/43900 cut-off events. For 10450/10450 co-relation queries the response was YES. Maximal size of possible extension queue 516. Compared 511238 event pairs, 4296 based on Foata normal form. 0/35528 useless extension candidates. Maximal degree in co-relation 26480. Up to 5120 conditions per place. [2022-11-18 18:30:12,242 INFO L82 GeneralOperation]: Start removeDead. Operand has 170 places, 178 transitions, 506 flow [2022-11-18 18:30:12,405 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 170 places, 178 transitions, 506 flow [2022-11-18 18:30:12,406 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 18:30:12,407 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=LoopsAndPotentialCycles, 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;@5cb0fe31, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 18:30:12,407 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2022-11-18 18:30:12,411 INFO L130 PetriNetUnfolder]: 4/58 cut-off events. [2022-11-18 18:30:12,412 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 18:30:12,412 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:30:12,412 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:30:12,412 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-18 18:30:12,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:30:12,413 INFO L85 PathProgramCache]: Analyzing trace with hash -852823862, now seen corresponding path program 1 times [2022-11-18 18:30:12,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:30:12,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94064698] [2022-11-18 18:30:12,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:30:12,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:30:12,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:30:12,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:30:12,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:30:12,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94064698] [2022-11-18 18:30:12,457 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94064698] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:30:12,457 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:30:12,457 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:30:12,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196493089] [2022-11-18 18:30:12,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:30:12,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:30:12,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:30:12,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:30:12,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:30:12,460 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 178 [2022-11-18 18:30:12,461 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 178 transitions, 506 flow. Second operand has 4 states, 4 states have (on average 100.0) internal successors, (400), 4 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:12,461 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:30:12,461 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 178 [2022-11-18 18:30:12,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:30:23,743 INFO L130 PetriNetUnfolder]: 13354/56295 cut-off events. [2022-11-18 18:30:23,743 INFO L131 PetriNetUnfolder]: For 15570/15570 co-relation queries the response was YES. [2022-11-18 18:30:24,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102968 conditions, 56295 events. 13354/56295 cut-off events. For 15570/15570 co-relation queries the response was YES. Maximal size of possible extension queue 805. Compared 729992 event pairs, 1312 based on Foata normal form. 44070/91985 useless extension candidates. Maximal degree in co-relation 49809. Up to 21536 conditions per place. [2022-11-18 18:30:24,301 INFO L137 encePairwiseOnDemand]: 153/178 looper letters, 89 selfloop transitions, 10 changer transitions 8/198 dead transitions. [2022-11-18 18:30:24,301 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 198 transitions, 806 flow [2022-11-18 18:30:24,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:30:24,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 18:30:24,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 614 transitions. [2022-11-18 18:30:24,304 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6898876404494382 [2022-11-18 18:30:24,304 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 614 transitions. [2022-11-18 18:30:24,305 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 614 transitions. [2022-11-18 18:30:24,305 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:30:24,305 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 614 transitions. [2022-11-18 18:30:24,307 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 122.8) internal successors, (614), 5 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:24,309 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 178.0) internal successors, (1068), 6 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:24,310 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 178.0) internal successors, (1068), 6 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:24,310 INFO L175 Difference]: Start difference. First operand has 170 places, 178 transitions, 506 flow. Second operand 5 states and 614 transitions. [2022-11-18 18:30:24,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 198 transitions, 806 flow [2022-11-18 18:30:24,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 198 transitions, 806 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 18:30:24,332 INFO L231 Difference]: Finished difference. Result has 167 places, 157 transitions, 518 flow [2022-11-18 18:30:24,333 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=468, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=518, PETRI_PLACES=167, PETRI_TRANSITIONS=157} [2022-11-18 18:30:24,334 INFO L288 CegarLoopForPetriNet]: 170 programPoint places, -3 predicate places. [2022-11-18 18:30:24,334 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 157 transitions, 518 flow [2022-11-18 18:30:24,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 100.0) internal successors, (400), 4 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:24,334 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:30:24,335 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:30:24,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-18 18:30:24,335 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-18 18:30:24,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:30:24,336 INFO L85 PathProgramCache]: Analyzing trace with hash -1910701361, now seen corresponding path program 1 times [2022-11-18 18:30:24,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:30:24,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114505043] [2022-11-18 18:30:24,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:30:24,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:30:24,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:30:24,394 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:30:24,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:30:24,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114505043] [2022-11-18 18:30:24,395 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114505043] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:30:24,395 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:30:24,395 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:30:24,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786417633] [2022-11-18 18:30:24,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:30:24,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:30:24,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:30:24,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:30:24,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:30:24,397 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 178 [2022-11-18 18:30:24,398 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 157 transitions, 518 flow. Second operand has 4 states, 4 states have (on average 102.0) internal successors, (408), 4 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:24,399 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:30:24,399 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 178 [2022-11-18 18:30:24,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:30:33,364 INFO L130 PetriNetUnfolder]: 13354/48187 cut-off events. [2022-11-18 18:30:33,365 INFO L131 PetriNetUnfolder]: For 19782/19782 co-relation queries the response was YES. [2022-11-18 18:30:33,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100281 conditions, 48187 events. 13354/48187 cut-off events. For 19782/19782 co-relation queries the response was YES. Maximal size of possible extension queue 779. Compared 582734 event pairs, 3293 based on Foata normal form. 4/41885 useless extension candidates. Maximal degree in co-relation 52032. Up to 25869 conditions per place. [2022-11-18 18:30:33,881 INFO L137 encePairwiseOnDemand]: 163/178 looper letters, 49 selfloop transitions, 20 changer transitions 0/160 dead transitions. [2022-11-18 18:30:33,881 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 160 transitions, 660 flow [2022-11-18 18:30:33,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:30:33,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 18:30:33,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 554 transitions. [2022-11-18 18:30:33,884 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6224719101123596 [2022-11-18 18:30:33,884 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 554 transitions. [2022-11-18 18:30:33,884 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 554 transitions. [2022-11-18 18:30:33,885 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:30:33,885 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 554 transitions. [2022-11-18 18:30:33,886 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 110.8) internal successors, (554), 5 states have internal predecessors, (554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:33,888 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 178.0) internal successors, (1068), 6 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:33,888 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 178.0) internal successors, (1068), 6 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:33,888 INFO L175 Difference]: Start difference. First operand has 167 places, 157 transitions, 518 flow. Second operand 5 states and 554 transitions. [2022-11-18 18:30:33,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 160 transitions, 660 flow [2022-11-18 18:30:33,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 160 transitions, 652 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 18:30:33,930 INFO L231 Difference]: Finished difference. Result has 162 places, 160 transitions, 578 flow [2022-11-18 18:30:33,930 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=506, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=578, PETRI_PLACES=162, PETRI_TRANSITIONS=160} [2022-11-18 18:30:33,930 INFO L288 CegarLoopForPetriNet]: 170 programPoint places, -8 predicate places. [2022-11-18 18:30:33,931 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 160 transitions, 578 flow [2022-11-18 18:30:33,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 102.0) internal successors, (408), 4 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:33,931 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:30:33,931 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:30:33,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-18 18:30:33,932 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-18 18:30:33,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:30:33,932 INFO L85 PathProgramCache]: Analyzing trace with hash 897800808, now seen corresponding path program 1 times [2022-11-18 18:30:33,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:30:33,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315318857] [2022-11-18 18:30:33,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:30:33,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:30:33,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:30:34,017 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:30:34,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:30:34,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315318857] [2022-11-18 18:30:34,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315318857] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:30:34,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [926397618] [2022-11-18 18:30:34,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:30:34,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:30:34,020 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44a7a78-10a5-4beb-ba87-fd502d40b481/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:30:34,023 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44a7a78-10a5-4beb-ba87-fd502d40b481/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:30:34,043 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44a7a78-10a5-4beb-ba87-fd502d40b481/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-18 18:30:34,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:30:34,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 18:30:34,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:30:34,186 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:30:34,187 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:30:34,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [926397618] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:30:34,187 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 18:30:34,187 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-18 18:30:34,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888910238] [2022-11-18 18:30:34,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:30:34,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:30:34,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:30:34,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:30:34,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 18:30:34,189 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 178 [2022-11-18 18:30:34,190 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 160 transitions, 578 flow. Second operand has 6 states, 6 states have (on average 100.83333333333333) internal successors, (605), 6 states have internal predecessors, (605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:34,190 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:30:34,191 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 178 [2022-11-18 18:30:34,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:30:43,427 INFO L130 PetriNetUnfolder]: 13354/48183 cut-off events. [2022-11-18 18:30:43,427 INFO L131 PetriNetUnfolder]: For 37629/37629 co-relation queries the response was YES. [2022-11-18 18:30:43,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109578 conditions, 48183 events. 13354/48183 cut-off events. For 37629/37629 co-relation queries the response was YES. Maximal size of possible extension queue 778. Compared 582695 event pairs, 1312 based on Foata normal form. 4/41881 useless extension candidates. Maximal degree in co-relation 56662. Up to 19427 conditions per place. [2022-11-18 18:30:44,236 INFO L137 encePairwiseOnDemand]: 165/178 looper letters, 83 selfloop transitions, 14 changer transitions 0/188 dead transitions. [2022-11-18 18:30:44,236 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 188 transitions, 886 flow [2022-11-18 18:30:44,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 18:30:44,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 18:30:44,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 784 transitions. [2022-11-18 18:30:44,240 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6292134831460674 [2022-11-18 18:30:44,240 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 784 transitions. [2022-11-18 18:30:44,241 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 784 transitions. [2022-11-18 18:30:44,241 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:30:44,241 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 784 transitions. [2022-11-18 18:30:44,244 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 112.0) internal successors, (784), 7 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:44,246 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 178.0) internal successors, (1424), 8 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:44,246 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 178.0) internal successors, (1424), 8 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:44,246 INFO L175 Difference]: Start difference. First operand has 162 places, 160 transitions, 578 flow. Second operand 7 states and 784 transitions. [2022-11-18 18:30:44,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 188 transitions, 886 flow [2022-11-18 18:30:44,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 188 transitions, 862 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 18:30:44,293 INFO L231 Difference]: Finished difference. Result has 164 places, 159 transitions, 578 flow [2022-11-18 18:30:44,293 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=550, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=578, PETRI_PLACES=164, PETRI_TRANSITIONS=159} [2022-11-18 18:30:44,294 INFO L288 CegarLoopForPetriNet]: 170 programPoint places, -6 predicate places. [2022-11-18 18:30:44,294 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 159 transitions, 578 flow [2022-11-18 18:30:44,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 100.83333333333333) internal successors, (605), 6 states have internal predecessors, (605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:44,295 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:30:44,295 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:30:44,308 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44a7a78-10a5-4beb-ba87-fd502d40b481/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-18 18:30:44,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44a7a78-10a5-4beb-ba87-fd502d40b481/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:30:44,501 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-18 18:30:44,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:30:44,502 INFO L85 PathProgramCache]: Analyzing trace with hash -1269230958, now seen corresponding path program 1 times [2022-11-18 18:30:44,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:30:44,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638453778] [2022-11-18 18:30:44,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:30:44,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:30:44,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:30:44,569 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:30:44,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:30:44,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638453778] [2022-11-18 18:30:44,570 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638453778] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:30:44,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1960966086] [2022-11-18 18:30:44,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:30:44,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:30:44,571 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44a7a78-10a5-4beb-ba87-fd502d40b481/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:30:44,573 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44a7a78-10a5-4beb-ba87-fd502d40b481/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:30:44,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f44a7a78-10a5-4beb-ba87-fd502d40b481/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-18 18:30:44,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:30:44,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 18:30:44,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:30:44,724 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:30:44,725 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:30:44,764 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:30:44,764 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1960966086] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:30:44,764 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 18:30:44,765 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-18 18:30:44,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740103143] [2022-11-18 18:30:44,765 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 18:30:44,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 18:30:44,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:30:44,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 18:30:44,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-18 18:30:44,771 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 178 [2022-11-18 18:30:44,772 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 159 transitions, 578 flow. Second operand has 10 states, 10 states have (on average 101.5) internal successors, (1015), 10 states have internal predecessors, (1015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:44,772 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:30:44,773 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 178 [2022-11-18 18:30:44,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand