./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread/stack-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59164b2f-f9fd-437b-9270-e42b97a1e99f/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59164b2f-f9fd-437b-9270-e42b97a1e99f/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_59164b2f-f9fd-437b-9270-e42b97a1e99f/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59164b2f-f9fd-437b-9270-e42b97a1e99f/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/stack-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59164b2f-f9fd-437b-9270-e42b97a1e99f/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_59164b2f-f9fd-437b-9270-e42b97a1e99f/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 a5e93db72222dd521789305cbf7823ac91f269c62c97020d54f95f5ba14d3fd2 --- 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 20:24:13,261 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:24:13,264 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:24:13,289 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:24:13,290 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:24:13,291 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:24:13,293 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:24:13,297 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:24:13,299 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:24:13,301 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:24:13,302 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:24:13,304 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:24:13,304 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:24:13,306 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:24:13,315 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:24:13,317 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:24:13,318 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:24:13,320 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:24:13,322 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:24:13,325 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:24:13,330 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:24:13,341 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:24:13,351 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:24:13,353 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:24:13,362 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:24:13,362 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:24:13,363 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:24:13,364 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:24:13,365 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:24:13,366 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:24:13,366 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:24:13,379 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:24:13,380 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:24:13,381 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:24:13,383 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:24:13,383 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:24:13,384 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:24:13,384 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:24:13,385 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:24:13,386 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:24:13,387 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:24:13,390 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59164b2f-f9fd-437b-9270-e42b97a1e99f/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-18 20:24:13,438 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:24:13,443 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:24:13,449 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:24:13,449 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:24:13,450 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:24:13,451 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:24:13,452 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:24:13,452 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:24:13,452 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:24:13,453 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:24:13,453 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 20:24:13,453 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 20:24:13,453 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:24:13,454 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 20:24:13,454 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:24:13,454 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 20:24:13,454 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:24:13,455 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 20:24:13,455 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-18 20:24:13,455 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 20:24:13,456 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 20:24:13,459 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:24:13,459 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 20:24:13,460 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:24:13,460 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:24:13,460 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:24:13,460 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:24:13,461 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:24:13,461 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:24:13,468 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 20:24:13,469 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:24:13,469 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 20:24:13,470 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 20:24:13,470 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 20:24:13,470 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 20:24:13,470 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_59164b2f-f9fd-437b-9270-e42b97a1e99f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59164b2f-f9fd-437b-9270-e42b97a1e99f/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a5e93db72222dd521789305cbf7823ac91f269c62c97020d54f95f5ba14d3fd2 [2022-11-18 20:24:13,781 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:24:13,818 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:24:13,822 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:24:13,824 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:24:13,825 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:24:13,826 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59164b2f-f9fd-437b-9270-e42b97a1e99f/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/pthread/stack-1.i [2022-11-18 20:24:13,910 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59164b2f-f9fd-437b-9270-e42b97a1e99f/bin/uautomizer-TMbwUNV5ro/data/fb470cca8/db9bdc27005f4fb1bb89309da3401445/FLAGf0b269e7f [2022-11-18 20:24:14,511 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:24:14,520 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59164b2f-f9fd-437b-9270-e42b97a1e99f/sv-benchmarks/c/pthread/stack-1.i [2022-11-18 20:24:14,549 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59164b2f-f9fd-437b-9270-e42b97a1e99f/bin/uautomizer-TMbwUNV5ro/data/fb470cca8/db9bdc27005f4fb1bb89309da3401445/FLAGf0b269e7f [2022-11-18 20:24:14,790 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59164b2f-f9fd-437b-9270-e42b97a1e99f/bin/uautomizer-TMbwUNV5ro/data/fb470cca8/db9bdc27005f4fb1bb89309da3401445 [2022-11-18 20:24:14,793 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:24:14,795 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:24:14,798 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:24:14,798 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:24:14,802 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:24:14,803 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:24:14" (1/1) ... [2022-11-18 20:24:14,804 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79067a0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:24:14, skipping insertion in model container [2022-11-18 20:24:14,804 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:24:14" (1/1) ... [2022-11-18 20:24:14,830 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:24:14,903 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:24:15,604 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_59164b2f-f9fd-437b-9270-e42b97a1e99f/sv-benchmarks/c/pthread/stack-1.i[41520,41533] [2022-11-18 20:24:15,658 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:24:15,676 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:24:15,750 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_59164b2f-f9fd-437b-9270-e42b97a1e99f/sv-benchmarks/c/pthread/stack-1.i[41520,41533] [2022-11-18 20:24:15,778 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:24:15,864 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:24:15,864 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:24:15 WrapperNode [2022-11-18 20:24:15,865 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:24:15,866 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:24:15,866 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:24:15,867 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:24:15,875 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:24:15" (1/1) ... [2022-11-18 20:24:15,896 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:24:15" (1/1) ... [2022-11-18 20:24:15,936 INFO L138 Inliner]: procedures = 277, calls = 43, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 160 [2022-11-18 20:24:15,936 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:24:15,937 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:24:15,938 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:24:15,938 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:24:15,956 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:24:15" (1/1) ... [2022-11-18 20:24:15,956 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:24:15" (1/1) ... [2022-11-18 20:24:15,961 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:24:15" (1/1) ... [2022-11-18 20:24:15,962 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:24:15" (1/1) ... [2022-11-18 20:24:15,971 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:24:15" (1/1) ... [2022-11-18 20:24:15,976 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:24:15" (1/1) ... [2022-11-18 20:24:15,978 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:24:15" (1/1) ... [2022-11-18 20:24:15,980 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:24:15" (1/1) ... [2022-11-18 20:24:15,984 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:24:15,985 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:24:15,985 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:24:15,985 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:24:15,986 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:24:15" (1/1) ... [2022-11-18 20:24:15,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:24:16,009 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59164b2f-f9fd-437b-9270-e42b97a1e99f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:24:16,023 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59164b2f-f9fd-437b-9270-e42b97a1e99f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:24:16,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59164b2f-f9fd-437b-9270-e42b97a1e99f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:24:16,108 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-11-18 20:24:16,109 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-11-18 20:24:16,109 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-11-18 20:24:16,109 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-11-18 20:24:16,109 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 20:24:16,110 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 20:24:16,110 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 20:24:16,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 20:24:16,110 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-18 20:24:16,110 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 20:24:16,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 20:24:16,111 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:24:16,111 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:24:16,113 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 20:24:16,325 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:24:16,327 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:24:16,803 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:24:16,813 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:24:16,814 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-18 20:24:16,817 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:24:16 BoogieIcfgContainer [2022-11-18 20:24:16,817 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:24:16,820 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:24:16,820 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:24:16,824 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:24:16,825 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:24:14" (1/3) ... [2022-11-18 20:24:16,826 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b72d0f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:24:16, skipping insertion in model container [2022-11-18 20:24:16,826 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:24:15" (2/3) ... [2022-11-18 20:24:16,827 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b72d0f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:24:16, skipping insertion in model container [2022-11-18 20:24:16,827 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:24:16" (3/3) ... [2022-11-18 20:24:16,828 INFO L112 eAbstractionObserver]: Analyzing ICFG stack-1.i [2022-11-18 20:24:16,839 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 20:24:16,852 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:24:16,852 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-11-18 20:24:16,853 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 20:24:16,992 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-18 20:24:17,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 185 places, 188 transitions, 392 flow [2022-11-18 20:24:17,135 INFO L130 PetriNetUnfolder]: 10/186 cut-off events. [2022-11-18 20:24:17,135 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-18 20:24:17,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 195 conditions, 186 events. 10/186 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 481 event pairs, 0 based on Foata normal form. 0/168 useless extension candidates. Maximal degree in co-relation 140. Up to 3 conditions per place. [2022-11-18 20:24:17,145 INFO L82 GeneralOperation]: Start removeDead. Operand has 185 places, 188 transitions, 392 flow [2022-11-18 20:24:17,152 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 173 places, 176 transitions, 361 flow [2022-11-18 20:24:17,165 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:24:17,173 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;@3fa2652c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:24:17,174 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2022-11-18 20:24:17,201 INFO L130 PetriNetUnfolder]: 3/83 cut-off events. [2022-11-18 20:24:17,201 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-18 20:24:17,201 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:24:17,202 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, 1, 1, 1, 1, 1, 1] [2022-11-18 20:24:17,203 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-18 20:24:17,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:24:17,210 INFO L85 PathProgramCache]: Analyzing trace with hash -1929666891, now seen corresponding path program 1 times [2022-11-18 20:24:17,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:24:17,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040073237] [2022-11-18 20:24:17,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:24:17,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:24:17,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:17,753 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 20:24:17,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:24:17,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040073237] [2022-11-18 20:24:17,755 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040073237] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:24:17,755 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:24:17,756 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:24:17,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873670540] [2022-11-18 20:24:17,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:24:17,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:24:17,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:24:17,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:24:17,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:24:17,855 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 166 out of 188 [2022-11-18 20:24:17,861 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 176 transitions, 361 flow. Second operand has 4 states, 4 states have (on average 167.75) internal successors, (671), 4 states have internal predecessors, (671), 0 states have call successors, (0), 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 20:24:17,861 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:24:17,861 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 166 of 188 [2022-11-18 20:24:17,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:24:18,139 INFO L130 PetriNetUnfolder]: 28/334 cut-off events. [2022-11-18 20:24:18,139 INFO L131 PetriNetUnfolder]: For 53/53 co-relation queries the response was YES. [2022-11-18 20:24:18,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 412 conditions, 334 events. 28/334 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1545 event pairs, 10 based on Foata normal form. 41/340 useless extension candidates. Maximal degree in co-relation 361. Up to 36 conditions per place. [2022-11-18 20:24:18,147 INFO L137 encePairwiseOnDemand]: 176/188 looper letters, 19 selfloop transitions, 4 changer transitions 0/176 dead transitions. [2022-11-18 20:24:18,148 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 176 transitions, 416 flow [2022-11-18 20:24:18,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:24:18,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:24:18,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 872 transitions. [2022-11-18 20:24:18,169 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9276595744680851 [2022-11-18 20:24:18,170 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 872 transitions. [2022-11-18 20:24:18,171 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 872 transitions. [2022-11-18 20:24:18,174 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:24:18,177 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 872 transitions. [2022-11-18 20:24:18,185 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 174.4) internal successors, (872), 5 states have internal predecessors, (872), 0 states have call successors, (0), 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 20:24:18,196 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 188.0) internal successors, (1128), 6 states have internal predecessors, (1128), 0 states have call successors, (0), 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 20:24:18,198 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 188.0) internal successors, (1128), 6 states have internal predecessors, (1128), 0 states have call successors, (0), 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 20:24:18,200 INFO L175 Difference]: Start difference. First operand has 173 places, 176 transitions, 361 flow. Second operand 5 states and 872 transitions. [2022-11-18 20:24:18,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 176 transitions, 416 flow [2022-11-18 20:24:18,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 176 transitions, 405 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 20:24:18,211 INFO L231 Difference]: Finished difference. Result has 173 places, 170 transitions, 370 flow [2022-11-18 20:24:18,214 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=338, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=370, PETRI_PLACES=173, PETRI_TRANSITIONS=170} [2022-11-18 20:24:18,218 INFO L288 CegarLoopForPetriNet]: 173 programPoint places, 0 predicate places. [2022-11-18 20:24:18,219 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 170 transitions, 370 flow [2022-11-18 20:24:18,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 167.75) internal successors, (671), 4 states have internal predecessors, (671), 0 states have call successors, (0), 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 20:24:18,220 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:24:18,220 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:24:18,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 20:24:18,221 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-18 20:24:18,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:24:18,222 INFO L85 PathProgramCache]: Analyzing trace with hash 838219538, now seen corresponding path program 1 times [2022-11-18 20:24:18,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:24:18,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657020102] [2022-11-18 20:24:18,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:24:18,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:24:18,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:18,369 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 20:24:18,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:24:18,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657020102] [2022-11-18 20:24:18,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657020102] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:24:18,370 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:24:18,370 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:24:18,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630753322] [2022-11-18 20:24:18,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:24:18,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:24:18,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:24:18,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:24:18,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:24:18,376 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 188 [2022-11-18 20:24:18,377 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 170 transitions, 370 flow. Second operand has 3 states, 3 states have (on average 166.0) internal successors, (498), 3 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:18,377 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:24:18,378 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 188 [2022-11-18 20:24:18,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:24:18,777 INFO L130 PetriNetUnfolder]: 144/1255 cut-off events. [2022-11-18 20:24:18,777 INFO L131 PetriNetUnfolder]: For 36/36 co-relation queries the response was YES. [2022-11-18 20:24:18,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1603 conditions, 1255 events. 144/1255 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 7598 event pairs, 63 based on Foata normal form. 0/1100 useless extension candidates. Maximal degree in co-relation 1239. Up to 191 conditions per place. [2022-11-18 20:24:18,792 INFO L137 encePairwiseOnDemand]: 183/188 looper letters, 20 selfloop transitions, 3 changer transitions 0/177 dead transitions. [2022-11-18 20:24:18,792 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 177 transitions, 433 flow [2022-11-18 20:24:18,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:24:18,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 20:24:18,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 517 transitions. [2022-11-18 20:24:18,795 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9166666666666666 [2022-11-18 20:24:18,796 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 517 transitions. [2022-11-18 20:24:18,796 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 517 transitions. [2022-11-18 20:24:18,797 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:24:18,797 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 517 transitions. [2022-11-18 20:24:18,801 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 172.33333333333334) internal successors, (517), 3 states have internal predecessors, (517), 0 states have call successors, (0), 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 20:24:18,804 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 188.0) internal successors, (752), 4 states have internal predecessors, (752), 0 states have call successors, (0), 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 20:24:18,805 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 188.0) internal successors, (752), 4 states have internal predecessors, (752), 0 states have call successors, (0), 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 20:24:18,805 INFO L175 Difference]: Start difference. First operand has 173 places, 170 transitions, 370 flow. Second operand 3 states and 517 transitions. [2022-11-18 20:24:18,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 177 transitions, 433 flow [2022-11-18 20:24:18,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 177 transitions, 431 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:24:18,818 INFO L231 Difference]: Finished difference. Result has 175 places, 171 transitions, 385 flow [2022-11-18 20:24:18,819 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=368, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=385, PETRI_PLACES=175, PETRI_TRANSITIONS=171} [2022-11-18 20:24:18,820 INFO L288 CegarLoopForPetriNet]: 173 programPoint places, 2 predicate places. [2022-11-18 20:24:18,820 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 171 transitions, 385 flow [2022-11-18 20:24:18,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 166.0) internal successors, (498), 3 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:18,821 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:24:18,822 INFO L209 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:24:18,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 20:24:18,824 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-18 20:24:18,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:24:18,827 INFO L85 PathProgramCache]: Analyzing trace with hash 414269833, now seen corresponding path program 1 times [2022-11-18 20:24:18,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:24:18,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408829619] [2022-11-18 20:24:18,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:24:18,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:24:18,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:19,077 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:24:19,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:24:19,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408829619] [2022-11-18 20:24:19,079 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408829619] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:24:19,079 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:24:19,080 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:24:19,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975152037] [2022-11-18 20:24:19,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:24:19,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:24:19,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:24:19,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:24:19,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:24:19,088 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 166 out of 188 [2022-11-18 20:24:19,090 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 171 transitions, 385 flow. Second operand has 4 states, 4 states have (on average 169.25) internal successors, (677), 4 states have internal predecessors, (677), 0 states have call successors, (0), 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 20:24:19,091 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:24:19,091 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 166 of 188 [2022-11-18 20:24:19,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:24:19,357 INFO L130 PetriNetUnfolder]: 96/790 cut-off events. [2022-11-18 20:24:19,358 INFO L131 PetriNetUnfolder]: For 115/116 co-relation queries the response was YES. [2022-11-18 20:24:19,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1081 conditions, 790 events. 96/790 cut-off events. For 115/116 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 3652 event pairs, 12 based on Foata normal form. 7/719 useless extension candidates. Maximal degree in co-relation 1027. Up to 85 conditions per place. [2022-11-18 20:24:19,368 INFO L137 encePairwiseOnDemand]: 182/188 looper letters, 12 selfloop transitions, 8 changer transitions 0/174 dead transitions. [2022-11-18 20:24:19,369 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 174 transitions, 432 flow [2022-11-18 20:24:19,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:24:19,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:24:19,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 848 transitions. [2022-11-18 20:24:19,374 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.902127659574468 [2022-11-18 20:24:19,374 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 848 transitions. [2022-11-18 20:24:19,377 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 848 transitions. [2022-11-18 20:24:19,377 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:24:19,378 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 848 transitions. [2022-11-18 20:24:19,381 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 169.6) internal successors, (848), 5 states have internal predecessors, (848), 0 states have call successors, (0), 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 20:24:19,384 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 188.0) internal successors, (1128), 6 states have internal predecessors, (1128), 0 states have call successors, (0), 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 20:24:19,385 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 188.0) internal successors, (1128), 6 states have internal predecessors, (1128), 0 states have call successors, (0), 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 20:24:19,385 INFO L175 Difference]: Start difference. First operand has 175 places, 171 transitions, 385 flow. Second operand 5 states and 848 transitions. [2022-11-18 20:24:19,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 174 transitions, 432 flow [2022-11-18 20:24:19,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 174 transitions, 429 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:24:19,397 INFO L231 Difference]: Finished difference. Result has 178 places, 171 transitions, 402 flow [2022-11-18 20:24:19,397 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=378, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=402, PETRI_PLACES=178, PETRI_TRANSITIONS=171} [2022-11-18 20:24:19,400 INFO L288 CegarLoopForPetriNet]: 173 programPoint places, 5 predicate places. [2022-11-18 20:24:19,401 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 171 transitions, 402 flow [2022-11-18 20:24:19,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 169.25) internal successors, (677), 4 states have internal predecessors, (677), 0 states have call successors, (0), 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 20:24:19,402 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:24:19,403 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:24:19,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 20:24:19,403 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-18 20:24:19,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:24:19,405 INFO L85 PathProgramCache]: Analyzing trace with hash -42536521, now seen corresponding path program 1 times [2022-11-18 20:24:19,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:24:19,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693292935] [2022-11-18 20:24:19,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:24:19,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:24:19,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:19,661 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:24:19,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:24:19,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693292935] [2022-11-18 20:24:19,662 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693292935] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:24:19,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1940875246] [2022-11-18 20:24:19,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:24:19,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:24:19,668 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59164b2f-f9fd-437b-9270-e42b97a1e99f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:24:19,675 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59164b2f-f9fd-437b-9270-e42b97a1e99f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:24:19,685 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59164b2f-f9fd-437b-9270-e42b97a1e99f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 20:24:19,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:19,849 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 20:24:19,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:24:20,005 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:24:20,005 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:24:20,006 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1940875246] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:24:20,007 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:24:20,007 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-18 20:24:20,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033398128] [2022-11-18 20:24:20,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:24:20,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:24:20,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:24:20,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:24:20,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:24:20,013 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 166 out of 188 [2022-11-18 20:24:20,015 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 171 transitions, 402 flow. Second operand has 6 states, 6 states have (on average 168.33333333333334) internal successors, (1010), 6 states have internal predecessors, (1010), 0 states have call successors, (0), 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 20:24:20,015 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:24:20,016 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 166 of 188 [2022-11-18 20:24:20,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:24:20,347 INFO L130 PetriNetUnfolder]: 91/778 cut-off events. [2022-11-18 20:24:20,379 INFO L131 PetriNetUnfolder]: For 172/173 co-relation queries the response was YES. [2022-11-18 20:24:20,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1113 conditions, 778 events. 91/778 cut-off events. For 172/173 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 3556 event pairs, 8 based on Foata normal form. 7/712 useless extension candidates. Maximal degree in co-relation 1059. Up to 65 conditions per place. [2022-11-18 20:24:20,388 INFO L137 encePairwiseOnDemand]: 183/188 looper letters, 17 selfloop transitions, 6 changer transitions 0/177 dead transitions. [2022-11-18 20:24:20,388 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 177 transitions, 463 flow [2022-11-18 20:24:20,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:24:20,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 20:24:20,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1186 transitions. [2022-11-18 20:24:20,394 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9012158054711246 [2022-11-18 20:24:20,395 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1186 transitions. [2022-11-18 20:24:20,401 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1186 transitions. [2022-11-18 20:24:20,402 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:24:20,402 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1186 transitions. [2022-11-18 20:24:20,406 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 169.42857142857142) internal successors, (1186), 7 states have internal predecessors, (1186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:20,410 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 188.0) internal successors, (1504), 8 states have internal predecessors, (1504), 0 states have call successors, (0), 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 20:24:20,412 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 188.0) internal successors, (1504), 8 states have internal predecessors, (1504), 0 states have call successors, (0), 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 20:24:20,412 INFO L175 Difference]: Start difference. First operand has 178 places, 171 transitions, 402 flow. Second operand 7 states and 1186 transitions. [2022-11-18 20:24:20,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 177 transitions, 463 flow [2022-11-18 20:24:20,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 177 transitions, 451 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 20:24:20,421 INFO L231 Difference]: Finished difference. Result has 180 places, 170 transitions, 398 flow [2022-11-18 20:24:20,422 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=386, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=398, PETRI_PLACES=180, PETRI_TRANSITIONS=170} [2022-11-18 20:24:20,424 INFO L288 CegarLoopForPetriNet]: 173 programPoint places, 7 predicate places. [2022-11-18 20:24:20,424 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 170 transitions, 398 flow [2022-11-18 20:24:20,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 168.33333333333334) internal successors, (1010), 6 states have internal predecessors, (1010), 0 states have call successors, (0), 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 20:24:20,425 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:24:20,426 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, 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 20:24:20,442 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59164b2f-f9fd-437b-9270-e42b97a1e99f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 20:24:20,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59164b2f-f9fd-437b-9270-e42b97a1e99f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:24:20,632 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-18 20:24:20,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:24:20,633 INFO L85 PathProgramCache]: Analyzing trace with hash 91011515, now seen corresponding path program 1 times [2022-11-18 20:24:20,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:24:20,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313186673] [2022-11-18 20:24:20,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:24:20,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:24:20,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:20,872 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 20:24:20,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:24:20,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313186673] [2022-11-18 20:24:20,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313186673] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:24:20,874 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:24:20,874 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:24:20,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911367203] [2022-11-18 20:24:20,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:24:20,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:24:20,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:24:20,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:24:20,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:24:20,879 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 188 [2022-11-18 20:24:20,881 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 170 transitions, 398 flow. Second operand has 4 states, 4 states have (on average 159.75) internal successors, (639), 4 states have internal predecessors, (639), 0 states have call successors, (0), 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 20:24:20,881 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:24:20,881 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 188 [2022-11-18 20:24:20,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:24:21,430 INFO L130 PetriNetUnfolder]: 289/1950 cut-off events. [2022-11-18 20:24:21,431 INFO L131 PetriNetUnfolder]: For 234/245 co-relation queries the response was YES. [2022-11-18 20:24:21,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2869 conditions, 1950 events. 289/1950 cut-off events. For 234/245 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 13922 event pairs, 19 based on Foata normal form. 7/1808 useless extension candidates. Maximal degree in co-relation 2428. Up to 389 conditions per place. [2022-11-18 20:24:21,448 INFO L137 encePairwiseOnDemand]: 181/188 looper letters, 42 selfloop transitions, 8 changer transitions 0/197 dead transitions. [2022-11-18 20:24:21,448 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 197 transitions, 565 flow [2022-11-18 20:24:21,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:24:21,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:24:21,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 842 transitions. [2022-11-18 20:24:21,452 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8957446808510638 [2022-11-18 20:24:21,452 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 842 transitions. [2022-11-18 20:24:21,452 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 842 transitions. [2022-11-18 20:24:21,453 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:24:21,453 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 842 transitions. [2022-11-18 20:24:21,456 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 168.4) internal successors, (842), 5 states have internal predecessors, (842), 0 states have call successors, (0), 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 20:24:21,459 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 188.0) internal successors, (1128), 6 states have internal predecessors, (1128), 0 states have call successors, (0), 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 20:24:21,460 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 188.0) internal successors, (1128), 6 states have internal predecessors, (1128), 0 states have call successors, (0), 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 20:24:21,460 INFO L175 Difference]: Start difference. First operand has 180 places, 170 transitions, 398 flow. Second operand 5 states and 842 transitions. [2022-11-18 20:24:21,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 197 transitions, 565 flow [2022-11-18 20:24:21,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 197 transitions, 554 flow, removed 1 selfloop flow, removed 5 redundant places. [2022-11-18 20:24:21,468 INFO L231 Difference]: Finished difference. Result has 182 places, 175 transitions, 439 flow [2022-11-18 20:24:21,469 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=387, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=439, PETRI_PLACES=182, PETRI_TRANSITIONS=175} [2022-11-18 20:24:21,472 INFO L288 CegarLoopForPetriNet]: 173 programPoint places, 9 predicate places. [2022-11-18 20:24:21,473 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 175 transitions, 439 flow [2022-11-18 20:24:21,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 159.75) internal successors, (639), 4 states have internal predecessors, (639), 0 states have call successors, (0), 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 20:24:21,473 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:24:21,474 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:24:21,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 20:24:21,474 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-18 20:24:21,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:24:21,475 INFO L85 PathProgramCache]: Analyzing trace with hash -1665785223, now seen corresponding path program 1 times [2022-11-18 20:24:21,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:24:21,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430748455] [2022-11-18 20:24:21,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:24:21,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:24:21,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:21,672 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 20:24:21,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:24:21,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430748455] [2022-11-18 20:24:21,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430748455] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:24:21,673 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:24:21,673 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:24:21,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495952402] [2022-11-18 20:24:21,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:24:21,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:24:21,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:24:21,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:24:21,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:24:21,676 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 166 out of 188 [2022-11-18 20:24:21,677 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 175 transitions, 439 flow. Second operand has 4 states, 4 states have (on average 167.5) internal successors, (670), 4 states have internal predecessors, (670), 0 states have call successors, (0), 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 20:24:21,678 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:24:21,678 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 166 of 188 [2022-11-18 20:24:21,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:24:21,995 INFO L130 PetriNetUnfolder]: 63/1039 cut-off events. [2022-11-18 20:24:21,996 INFO L131 PetriNetUnfolder]: For 110/115 co-relation queries the response was YES. [2022-11-18 20:24:22,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1418 conditions, 1039 events. 63/1039 cut-off events. For 110/115 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 5068 event pairs, 22 based on Foata normal form. 0/969 useless extension candidates. Maximal degree in co-relation 1152. Up to 56 conditions per place. [2022-11-18 20:24:22,008 INFO L137 encePairwiseOnDemand]: 181/188 looper letters, 19 selfloop transitions, 4 changer transitions 0/184 dead transitions. [2022-11-18 20:24:22,008 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 184 transitions, 509 flow [2022-11-18 20:24:22,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:24:22,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:24:22,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 856 transitions. [2022-11-18 20:24:22,012 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9106382978723404 [2022-11-18 20:24:22,012 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 856 transitions. [2022-11-18 20:24:22,012 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 856 transitions. [2022-11-18 20:24:22,013 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:24:22,013 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 856 transitions. [2022-11-18 20:24:22,016 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 171.2) internal successors, (856), 5 states have internal predecessors, (856), 0 states have call successors, (0), 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 20:24:22,019 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 188.0) internal successors, (1128), 6 states have internal predecessors, (1128), 0 states have call successors, (0), 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 20:24:22,019 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 188.0) internal successors, (1128), 6 states have internal predecessors, (1128), 0 states have call successors, (0), 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 20:24:22,020 INFO L175 Difference]: Start difference. First operand has 182 places, 175 transitions, 439 flow. Second operand 5 states and 856 transitions. [2022-11-18 20:24:22,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 184 transitions, 509 flow [2022-11-18 20:24:22,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 184 transitions, 504 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:24:22,027 INFO L231 Difference]: Finished difference. Result has 188 places, 178 transitions, 466 flow [2022-11-18 20:24:22,028 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=434, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=466, PETRI_PLACES=188, PETRI_TRANSITIONS=178} [2022-11-18 20:24:22,031 INFO L288 CegarLoopForPetriNet]: 173 programPoint places, 15 predicate places. [2022-11-18 20:24:22,033 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 178 transitions, 466 flow [2022-11-18 20:24:22,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 167.5) internal successors, (670), 4 states have internal predecessors, (670), 0 states have call successors, (0), 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 20:24:22,034 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:24:22,035 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:24:22,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 20:24:22,035 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-18 20:24:22,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:24:22,036 INFO L85 PathProgramCache]: Analyzing trace with hash 1600848206, now seen corresponding path program 1 times [2022-11-18 20:24:22,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:24:22,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801755640] [2022-11-18 20:24:22,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:24:22,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:24:22,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:22,257 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 20:24:22,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:24:22,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801755640] [2022-11-18 20:24:22,258 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801755640] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:24:22,258 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:24:22,258 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:24:22,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202460625] [2022-11-18 20:24:22,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:24:22,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:24:22,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:24:22,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:24:22,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:24:22,261 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 166 out of 188 [2022-11-18 20:24:22,263 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 178 transitions, 466 flow. Second operand has 3 states, 3 states have (on average 169.66666666666666) internal successors, (509), 3 states have internal predecessors, (509), 0 states have call successors, (0), 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 20:24:22,263 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:24:22,263 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 166 of 188 [2022-11-18 20:24:22,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:24:22,494 INFO L130 PetriNetUnfolder]: 38/956 cut-off events. [2022-11-18 20:24:22,495 INFO L131 PetriNetUnfolder]: For 72/72 co-relation queries the response was YES. [2022-11-18 20:24:22,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1241 conditions, 956 events. 38/956 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 5097 event pairs, 13 based on Foata normal form. 10/923 useless extension candidates. Maximal degree in co-relation 896. Up to 39 conditions per place. [2022-11-18 20:24:22,503 INFO L137 encePairwiseOnDemand]: 184/188 looper letters, 12 selfloop transitions, 4 changer transitions 0/177 dead transitions. [2022-11-18 20:24:22,503 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 177 transitions, 486 flow [2022-11-18 20:24:22,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:24:22,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 20:24:22,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 516 transitions. [2022-11-18 20:24:22,506 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9148936170212766 [2022-11-18 20:24:22,507 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 516 transitions. [2022-11-18 20:24:22,507 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 516 transitions. [2022-11-18 20:24:22,507 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:24:22,508 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 516 transitions. [2022-11-18 20:24:22,509 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 172.0) internal successors, (516), 3 states have internal predecessors, (516), 0 states have call successors, (0), 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 20:24:22,511 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 188.0) internal successors, (752), 4 states have internal predecessors, (752), 0 states have call successors, (0), 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 20:24:22,512 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 188.0) internal successors, (752), 4 states have internal predecessors, (752), 0 states have call successors, (0), 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 20:24:22,512 INFO L175 Difference]: Start difference. First operand has 188 places, 178 transitions, 466 flow. Second operand 3 states and 516 transitions. [2022-11-18 20:24:22,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 177 transitions, 486 flow [2022-11-18 20:24:22,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 177 transitions, 479 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-11-18 20:24:22,518 INFO L231 Difference]: Finished difference. Result has 188 places, 175 transitions, 448 flow [2022-11-18 20:24:22,519 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=440, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=448, PETRI_PLACES=188, PETRI_TRANSITIONS=175} [2022-11-18 20:24:22,521 INFO L288 CegarLoopForPetriNet]: 173 programPoint places, 15 predicate places. [2022-11-18 20:24:22,521 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 175 transitions, 448 flow [2022-11-18 20:24:22,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 169.66666666666666) internal successors, (509), 3 states have internal predecessors, (509), 0 states have call successors, (0), 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 20:24:22,522 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:24:22,522 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:24:22,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 20:24:22,523 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-18 20:24:22,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:24:22,524 INFO L85 PathProgramCache]: Analyzing trace with hash -1684871933, now seen corresponding path program 1 times [2022-11-18 20:24:22,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:24:22,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123363903] [2022-11-18 20:24:22,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:24:22,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:24:22,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:22,798 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 20:24:22,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:24:22,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123363903] [2022-11-18 20:24:22,799 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123363903] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:24:22,799 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:24:22,799 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:24:22,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132073223] [2022-11-18 20:24:22,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:24:22,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:24:22,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:24:22,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:24:22,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:24:22,804 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 188 [2022-11-18 20:24:22,806 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 175 transitions, 448 flow. Second operand has 6 states, 6 states have (on average 154.66666666666666) internal successors, (928), 6 states have internal predecessors, (928), 0 states have call successors, (0), 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 20:24:22,806 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:24:22,807 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 188 [2022-11-18 20:24:22,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:24:23,290 INFO L130 PetriNetUnfolder]: 130/1337 cut-off events. [2022-11-18 20:24:23,291 INFO L131 PetriNetUnfolder]: For 156/156 co-relation queries the response was YES. [2022-11-18 20:24:23,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2026 conditions, 1337 events. 130/1337 cut-off events. For 156/156 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 7973 event pairs, 38 based on Foata normal form. 4/1285 useless extension candidates. Maximal degree in co-relation 1193. Up to 123 conditions per place. [2022-11-18 20:24:23,302 INFO L137 encePairwiseOnDemand]: 177/188 looper letters, 55 selfloop transitions, 11 changer transitions 0/210 dead transitions. [2022-11-18 20:24:23,302 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 210 transitions, 675 flow [2022-11-18 20:24:23,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 20:24:23,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-18 20:24:23,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1284 transitions. [2022-11-18 20:24:23,329 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8537234042553191 [2022-11-18 20:24:23,330 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1284 transitions. [2022-11-18 20:24:23,330 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1284 transitions. [2022-11-18 20:24:23,331 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:24:23,331 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1284 transitions. [2022-11-18 20:24:23,335 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 160.5) internal successors, (1284), 8 states have internal predecessors, (1284), 0 states have call successors, (0), 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 20:24:23,341 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 188.0) internal successors, (1692), 9 states have internal predecessors, (1692), 0 states have call successors, (0), 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 20:24:23,343 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 188.0) internal successors, (1692), 9 states have internal predecessors, (1692), 0 states have call successors, (0), 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 20:24:23,343 INFO L175 Difference]: Start difference. First operand has 188 places, 175 transitions, 448 flow. Second operand 8 states and 1284 transitions. [2022-11-18 20:24:23,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 210 transitions, 675 flow [2022-11-18 20:24:23,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 210 transitions, 671 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:24:23,350 INFO L231 Difference]: Finished difference. Result has 197 places, 181 transitions, 510 flow [2022-11-18 20:24:23,351 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=444, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=510, PETRI_PLACES=197, PETRI_TRANSITIONS=181} [2022-11-18 20:24:23,354 INFO L288 CegarLoopForPetriNet]: 173 programPoint places, 24 predicate places. [2022-11-18 20:24:23,354 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 181 transitions, 510 flow [2022-11-18 20:24:23,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 154.66666666666666) internal successors, (928), 6 states have internal predecessors, (928), 0 states have call successors, (0), 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 20:24:23,355 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:24:23,355 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:24:23,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 20:24:23,356 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-18 20:24:23,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:24:23,357 INFO L85 PathProgramCache]: Analyzing trace with hash -748238980, now seen corresponding path program 1 times [2022-11-18 20:24:23,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:24:23,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815742836] [2022-11-18 20:24:23,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:24:23,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:24:23,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:23,475 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 20:24:23,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:24:23,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815742836] [2022-11-18 20:24:23,476 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815742836] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:24:23,476 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:24:23,476 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:24:23,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351679956] [2022-11-18 20:24:23,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:24:23,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:24:23,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:24:23,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:24:23,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:24:23,480 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 188 [2022-11-18 20:24:23,482 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 181 transitions, 510 flow. Second operand has 4 states, 4 states have (on average 161.25) internal successors, (645), 4 states have internal predecessors, (645), 0 states have call successors, (0), 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 20:24:23,482 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:24:23,482 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 188 [2022-11-18 20:24:23,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:24:23,864 INFO L130 PetriNetUnfolder]: 102/1281 cut-off events. [2022-11-18 20:24:23,865 INFO L131 PetriNetUnfolder]: For 330/332 co-relation queries the response was YES. [2022-11-18 20:24:23,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1913 conditions, 1281 events. 102/1281 cut-off events. For 330/332 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 7119 event pairs, 24 based on Foata normal form. 22/1264 useless extension candidates. Maximal degree in co-relation 1567. Up to 114 conditions per place. [2022-11-18 20:24:23,874 INFO L137 encePairwiseOnDemand]: 179/188 looper letters, 28 selfloop transitions, 8 changer transitions 0/185 dead transitions. [2022-11-18 20:24:23,874 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 185 transitions, 590 flow [2022-11-18 20:24:23,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:24:23,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:24:23,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 823 transitions. [2022-11-18 20:24:23,878 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.875531914893617 [2022-11-18 20:24:23,878 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 823 transitions. [2022-11-18 20:24:23,878 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 823 transitions. [2022-11-18 20:24:23,879 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:24:23,879 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 823 transitions. [2022-11-18 20:24:23,882 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 164.6) internal successors, (823), 5 states have internal predecessors, (823), 0 states have call successors, (0), 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 20:24:23,885 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 188.0) internal successors, (1128), 6 states have internal predecessors, (1128), 0 states have call successors, (0), 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 20:24:23,886 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 188.0) internal successors, (1128), 6 states have internal predecessors, (1128), 0 states have call successors, (0), 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 20:24:23,886 INFO L175 Difference]: Start difference. First operand has 197 places, 181 transitions, 510 flow. Second operand 5 states and 823 transitions. [2022-11-18 20:24:23,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 185 transitions, 590 flow [2022-11-18 20:24:23,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 185 transitions, 584 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 20:24:23,893 INFO L231 Difference]: Finished difference. Result has 196 places, 178 transitions, 525 flow [2022-11-18 20:24:23,894 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=475, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=525, PETRI_PLACES=196, PETRI_TRANSITIONS=178} [2022-11-18 20:24:23,895 INFO L288 CegarLoopForPetriNet]: 173 programPoint places, 23 predicate places. [2022-11-18 20:24:23,895 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 178 transitions, 525 flow [2022-11-18 20:24:23,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 161.25) internal successors, (645), 4 states have internal predecessors, (645), 0 states have call successors, (0), 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 20:24:23,898 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:24:23,898 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 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 20:24:23,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-18 20:24:23,899 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-18 20:24:23,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:24:23,901 INFO L85 PathProgramCache]: Analyzing trace with hash -1838798298, now seen corresponding path program 1 times [2022-11-18 20:24:23,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:24:23,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158676788] [2022-11-18 20:24:23,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:24:23,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:24:23,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:24,151 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:24:24,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:24:24,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158676788] [2022-11-18 20:24:24,154 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158676788] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:24:24,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1311098440] [2022-11-18 20:24:24,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:24:24,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:24:24,156 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59164b2f-f9fd-437b-9270-e42b97a1e99f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:24:24,159 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59164b2f-f9fd-437b-9270-e42b97a1e99f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:24:24,171 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59164b2f-f9fd-437b-9270-e42b97a1e99f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 20:24:24,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:24,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 20:24:24,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:24:24,627 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:24:24,628 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:24:24,881 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:24:24,881 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1311098440] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:24:24,881 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:24:24,882 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-18 20:24:24,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913436135] [2022-11-18 20:24:24,882 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:24:24,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 20:24:24,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:24:24,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 20:24:24,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-18 20:24:24,887 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 188 [2022-11-18 20:24:24,890 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 178 transitions, 525 flow. Second operand has 12 states, 12 states have (on average 161.25) internal successors, (1935), 12 states have internal predecessors, (1935), 0 states have call successors, (0), 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 20:24:24,890 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:24:24,891 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 188 [2022-11-18 20:24:24,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:24:25,820 INFO L130 PetriNetUnfolder]: 159/2250 cut-off events. [2022-11-18 20:24:25,821 INFO L131 PetriNetUnfolder]: For 713/713 co-relation queries the response was YES. [2022-11-18 20:24:25,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3604 conditions, 2250 events. 159/2250 cut-off events. For 713/713 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 14619 event pairs, 32 based on Foata normal form. 25/2212 useless extension candidates. Maximal degree in co-relation 2870. Up to 107 conditions per place. [2022-11-18 20:24:25,838 INFO L137 encePairwiseOnDemand]: 177/188 looper letters, 78 selfloop transitions, 34 changer transitions 0/260 dead transitions. [2022-11-18 20:24:25,838 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 260 transitions, 1087 flow [2022-11-18 20:24:25,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-18 20:24:25,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-11-18 20:24:25,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3269 transitions. [2022-11-18 20:24:25,848 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8694148936170213 [2022-11-18 20:24:25,848 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3269 transitions. [2022-11-18 20:24:25,848 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3269 transitions. [2022-11-18 20:24:25,851 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:24:25,852 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3269 transitions. [2022-11-18 20:24:25,861 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 163.45) internal successors, (3269), 20 states have internal predecessors, (3269), 0 states have call successors, (0), 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 20:24:25,870 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 188.0) internal successors, (3948), 21 states have internal predecessors, (3948), 0 states have call successors, (0), 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 20:24:25,873 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 188.0) internal successors, (3948), 21 states have internal predecessors, (3948), 0 states have call successors, (0), 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 20:24:25,873 INFO L175 Difference]: Start difference. First operand has 196 places, 178 transitions, 525 flow. Second operand 20 states and 3269 transitions. [2022-11-18 20:24:25,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 260 transitions, 1087 flow [2022-11-18 20:24:25,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 260 transitions, 1065 flow, removed 3 selfloop flow, removed 2 redundant places. [2022-11-18 20:24:25,884 INFO L231 Difference]: Finished difference. Result has 220 places, 205 transitions, 788 flow [2022-11-18 20:24:25,884 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=513, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=788, PETRI_PLACES=220, PETRI_TRANSITIONS=205} [2022-11-18 20:24:25,885 INFO L288 CegarLoopForPetriNet]: 173 programPoint places, 47 predicate places. [2022-11-18 20:24:25,885 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 205 transitions, 788 flow [2022-11-18 20:24:25,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 161.25) internal successors, (1935), 12 states have internal predecessors, (1935), 0 states have call successors, (0), 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 20:24:25,887 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:24:25,887 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 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 20:24:25,900 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59164b2f-f9fd-437b-9270-e42b97a1e99f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 20:24:26,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59164b2f-f9fd-437b-9270-e42b97a1e99f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-18 20:24:26,095 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-18 20:24:26,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:24:26,095 INFO L85 PathProgramCache]: Analyzing trace with hash -1168171872, now seen corresponding path program 1 times [2022-11-18 20:24:26,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:24:26,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138950105] [2022-11-18 20:24:26,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:24:26,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:24:26,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:26,343 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:24:26,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:24:26,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138950105] [2022-11-18 20:24:26,344 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138950105] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:24:26,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [426466204] [2022-11-18 20:24:26,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:24:26,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:24:26,346 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59164b2f-f9fd-437b-9270-e42b97a1e99f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:24:26,347 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59164b2f-f9fd-437b-9270-e42b97a1e99f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:24:26,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59164b2f-f9fd-437b-9270-e42b97a1e99f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 20:24:26,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:26,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 20:24:26,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:24:26,792 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:24:26,792 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:24:26,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [426466204] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:24:26,793 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:24:26,793 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-18 20:24:26,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703574543] [2022-11-18 20:24:26,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:24:26,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:24:26,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:24:26,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:24:26,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:24:26,798 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 188 [2022-11-18 20:24:26,800 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 205 transitions, 788 flow. Second operand has 6 states, 6 states have (on average 160.66666666666666) internal successors, (964), 6 states have internal predecessors, (964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:26,801 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:24:26,801 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 188 [2022-11-18 20:24:26,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:24:27,626 INFO L130 PetriNetUnfolder]: 154/2408 cut-off events. [2022-11-18 20:24:27,626 INFO L131 PetriNetUnfolder]: For 1498/1498 co-relation queries the response was YES. [2022-11-18 20:24:27,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4041 conditions, 2408 events. 154/2408 cut-off events. For 1498/1498 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 15133 event pairs, 31 based on Foata normal form. 36/2374 useless extension candidates. Maximal degree in co-relation 3528. Up to 231 conditions per place. [2022-11-18 20:24:27,646 INFO L137 encePairwiseOnDemand]: 178/188 looper letters, 68 selfloop transitions, 20 changer transitions 0/236 dead transitions. [2022-11-18 20:24:27,646 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 236 transitions, 1150 flow [2022-11-18 20:24:27,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 20:24:27,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-18 20:24:27,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1312 transitions. [2022-11-18 20:24:27,651 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8723404255319149 [2022-11-18 20:24:27,651 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1312 transitions. [2022-11-18 20:24:27,651 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1312 transitions. [2022-11-18 20:24:27,652 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:24:27,653 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1312 transitions. [2022-11-18 20:24:27,656 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 164.0) internal successors, (1312), 8 states have internal predecessors, (1312), 0 states have call successors, (0), 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 20:24:27,660 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 188.0) internal successors, (1692), 9 states have internal predecessors, (1692), 0 states have call successors, (0), 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 20:24:27,661 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 188.0) internal successors, (1692), 9 states have internal predecessors, (1692), 0 states have call successors, (0), 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 20:24:27,662 INFO L175 Difference]: Start difference. First operand has 220 places, 205 transitions, 788 flow. Second operand 8 states and 1312 transitions. [2022-11-18 20:24:27,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 236 transitions, 1150 flow [2022-11-18 20:24:27,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 236 transitions, 1058 flow, removed 41 selfloop flow, removed 5 redundant places. [2022-11-18 20:24:27,675 INFO L231 Difference]: Finished difference. Result has 225 places, 216 transitions, 919 flow [2022-11-18 20:24:27,676 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=716, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=919, PETRI_PLACES=225, PETRI_TRANSITIONS=216} [2022-11-18 20:24:27,677 INFO L288 CegarLoopForPetriNet]: 173 programPoint places, 52 predicate places. [2022-11-18 20:24:27,677 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 216 transitions, 919 flow [2022-11-18 20:24:27,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 160.66666666666666) internal successors, (964), 6 states have internal predecessors, (964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:24:27,678 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:24:27,678 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:24:27,695 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59164b2f-f9fd-437b-9270-e42b97a1e99f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 20:24:27,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59164b2f-f9fd-437b-9270-e42b97a1e99f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-18 20:24:27,886 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-18 20:24:27,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:24:27,886 INFO L85 PathProgramCache]: Analyzing trace with hash 474347502, now seen corresponding path program 1 times [2022-11-18 20:24:27,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:24:27,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994775405] [2022-11-18 20:24:27,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:24:27,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:24:27,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:28,005 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:24:28,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:24:28,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994775405] [2022-11-18 20:24:28,006 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994775405] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:24:28,006 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:24:28,006 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:24:28,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178601107] [2022-11-18 20:24:28,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:24:28,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:24:28,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:24:28,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:24:28,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:24:28,009 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 166 out of 188 [2022-11-18 20:24:28,011 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 216 transitions, 919 flow. Second operand has 4 states, 4 states have (on average 169.0) internal successors, (676), 4 states have internal predecessors, (676), 0 states have call successors, (0), 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 20:24:28,011 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:24:28,011 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 166 of 188 [2022-11-18 20:24:28,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:24:28,626 INFO L130 PetriNetUnfolder]: 91/2073 cut-off events. [2022-11-18 20:24:28,627 INFO L131 PetriNetUnfolder]: For 983/983 co-relation queries the response was YES. [2022-11-18 20:24:28,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3298 conditions, 2073 events. 91/2073 cut-off events. For 983/983 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 11398 event pairs, 11 based on Foata normal form. 19/2029 useless extension candidates. Maximal degree in co-relation 2867. Up to 107 conditions per place. [2022-11-18 20:24:28,645 INFO L137 encePairwiseOnDemand]: 182/188 looper letters, 12 selfloop transitions, 8 changer transitions 0/219 dead transitions. [2022-11-18 20:24:28,646 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 219 transitions, 969 flow [2022-11-18 20:24:28,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:24:28,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:24:28,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 848 transitions. [2022-11-18 20:24:28,649 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.902127659574468 [2022-11-18 20:24:28,650 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 848 transitions. [2022-11-18 20:24:28,650 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 848 transitions. [2022-11-18 20:24:28,651 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:24:28,651 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 848 transitions. [2022-11-18 20:24:28,653 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 169.6) internal successors, (848), 5 states have internal predecessors, (848), 0 states have call successors, (0), 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 20:24:28,656 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 188.0) internal successors, (1128), 6 states have internal predecessors, (1128), 0 states have call successors, (0), 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 20:24:28,657 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 188.0) internal successors, (1128), 6 states have internal predecessors, (1128), 0 states have call successors, (0), 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 20:24:28,657 INFO L175 Difference]: Start difference. First operand has 225 places, 216 transitions, 919 flow. Second operand 5 states and 848 transitions. [2022-11-18 20:24:28,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 219 transitions, 969 flow [2022-11-18 20:24:28,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 219 transitions, 949 flow, removed 7 selfloop flow, removed 3 redundant places. [2022-11-18 20:24:28,671 INFO L231 Difference]: Finished difference. Result has 226 places, 216 transitions, 919 flow [2022-11-18 20:24:28,672 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=895, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=919, PETRI_PLACES=226, PETRI_TRANSITIONS=216} [2022-11-18 20:24:28,673 INFO L288 CegarLoopForPetriNet]: 173 programPoint places, 53 predicate places. [2022-11-18 20:24:28,673 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 216 transitions, 919 flow [2022-11-18 20:24:28,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 169.0) internal successors, (676), 4 states have internal predecessors, (676), 0 states have call successors, (0), 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 20:24:28,674 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:24:28,674 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:24:28,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-18 20:24:28,674 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-18 20:24:28,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:24:28,675 INFO L85 PathProgramCache]: Analyzing trace with hash 1819871185, now seen corresponding path program 1 times [2022-11-18 20:24:28,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:24:28,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813726782] [2022-11-18 20:24:28,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:24:28,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:24:28,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:28,882 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:24:28,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:24:28,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813726782] [2022-11-18 20:24:28,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813726782] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:24:28,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1034130715] [2022-11-18 20:24:28,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:24:28,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:24:28,884 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59164b2f-f9fd-437b-9270-e42b97a1e99f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:24:28,885 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59164b2f-f9fd-437b-9270-e42b97a1e99f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:24:28,892 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59164b2f-f9fd-437b-9270-e42b97a1e99f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 20:24:29,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:29,065 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 20:24:29,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:24:29,195 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:24:29,196 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:24:29,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1034130715] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:24:29,196 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:24:29,197 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2022-11-18 20:24:29,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530627318] [2022-11-18 20:24:29,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:24:29,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:24:29,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:24:29,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:24:29,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:24:29,202 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 166 out of 188 [2022-11-18 20:24:29,214 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 216 transitions, 919 flow. Second operand has 5 states, 5 states have (on average 168.6) internal successors, (843), 5 states have internal predecessors, (843), 0 states have call successors, (0), 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 20:24:29,214 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:24:29,215 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 166 of 188 [2022-11-18 20:24:29,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:24:29,868 INFO L130 PetriNetUnfolder]: 87/2050 cut-off events. [2022-11-18 20:24:29,868 INFO L131 PetriNetUnfolder]: For 950/950 co-relation queries the response was YES. [2022-11-18 20:24:29,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3313 conditions, 2050 events. 87/2050 cut-off events. For 950/950 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 11231 event pairs, 1 based on Foata normal form. 19/2006 useless extension candidates. Maximal degree in co-relation 2912. Up to 112 conditions per place. [2022-11-18 20:24:29,896 INFO L137 encePairwiseOnDemand]: 184/188 looper letters, 13 selfloop transitions, 5 changer transitions 3/217 dead transitions. [2022-11-18 20:24:29,897 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 217 transitions, 959 flow [2022-11-18 20:24:29,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:24:29,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 20:24:29,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 679 transitions. [2022-11-18 20:24:29,900 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9029255319148937 [2022-11-18 20:24:29,900 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 679 transitions. [2022-11-18 20:24:29,900 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 679 transitions. [2022-11-18 20:24:29,901 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:24:29,901 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 679 transitions. [2022-11-18 20:24:29,904 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 169.75) internal successors, (679), 4 states have internal predecessors, (679), 0 states have call successors, (0), 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 20:24:29,906 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 188.0) internal successors, (940), 5 states have internal predecessors, (940), 0 states have call successors, (0), 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 20:24:29,906 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 188.0) internal successors, (940), 5 states have internal predecessors, (940), 0 states have call successors, (0), 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 20:24:29,907 INFO L175 Difference]: Start difference. First operand has 226 places, 216 transitions, 919 flow. Second operand 4 states and 679 transitions. [2022-11-18 20:24:29,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 217 transitions, 959 flow [2022-11-18 20:24:29,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 217 transitions, 947 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 20:24:29,922 INFO L231 Difference]: Finished difference. Result has 225 places, 212 transitions, 907 flow [2022-11-18 20:24:29,922 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=903, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=907, PETRI_PLACES=225, PETRI_TRANSITIONS=212} [2022-11-18 20:24:29,924 INFO L288 CegarLoopForPetriNet]: 173 programPoint places, 52 predicate places. [2022-11-18 20:24:29,925 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 212 transitions, 907 flow [2022-11-18 20:24:29,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 168.6) internal successors, (843), 5 states have internal predecessors, (843), 0 states have call successors, (0), 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 20:24:29,925 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:24:29,926 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:24:29,938 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59164b2f-f9fd-437b-9270-e42b97a1e99f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 20:24:30,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59164b2f-f9fd-437b-9270-e42b97a1e99f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:24:30,133 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-18 20:24:30,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:24:30,135 INFO L85 PathProgramCache]: Analyzing trace with hash -1647645340, now seen corresponding path program 1 times [2022-11-18 20:24:30,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:24:30,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817374417] [2022-11-18 20:24:30,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:24:30,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:24:30,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:30,430 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:24:30,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:24:30,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817374417] [2022-11-18 20:24:30,431 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817374417] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:24:30,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1685641831] [2022-11-18 20:24:30,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:24:30,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:24:30,432 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59164b2f-f9fd-437b-9270-e42b97a1e99f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:24:30,433 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59164b2f-f9fd-437b-9270-e42b97a1e99f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:24:30,439 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59164b2f-f9fd-437b-9270-e42b97a1e99f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 20:24:30,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:30,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 20:24:30,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:24:30,880 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:24:30,880 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:24:31,198 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:24:31,199 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1685641831] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:24:31,199 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:24:31,199 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2022-11-18 20:24:31,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915885138] [2022-11-18 20:24:31,200 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:24:31,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-18 20:24:31,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:24:31,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-18 20:24:31,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2022-11-18 20:24:31,205 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 188 [2022-11-18 20:24:31,208 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 212 transitions, 907 flow. Second operand has 16 states, 16 states have (on average 155.625) internal successors, (2490), 16 states have internal predecessors, (2490), 0 states have call successors, (0), 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 20:24:31,208 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:24:31,208 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 188 [2022-11-18 20:24:31,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:24:32,450 INFO L130 PetriNetUnfolder]: 219/2733 cut-off events. [2022-11-18 20:24:32,450 INFO L131 PetriNetUnfolder]: For 1905/1905 co-relation queries the response was YES. [2022-11-18 20:24:32,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4790 conditions, 2733 events. 219/2733 cut-off events. For 1905/1905 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 19008 event pairs, 55 based on Foata normal form. 37/2699 useless extension candidates. Maximal degree in co-relation 4310. Up to 126 conditions per place. [2022-11-18 20:24:32,471 INFO L137 encePairwiseOnDemand]: 175/188 looper letters, 90 selfloop transitions, 62 changer transitions 1/291 dead transitions. [2022-11-18 20:24:32,472 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 291 transitions, 1530 flow [2022-11-18 20:24:32,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-18 20:24:32,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-11-18 20:24:32,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3770 transitions. [2022-11-18 20:24:32,484 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8355496453900709 [2022-11-18 20:24:32,484 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3770 transitions. [2022-11-18 20:24:32,485 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3770 transitions. [2022-11-18 20:24:32,488 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:24:32,488 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3770 transitions. [2022-11-18 20:24:32,499 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 157.08333333333334) internal successors, (3770), 24 states have internal predecessors, (3770), 0 states have call successors, (0), 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 20:24:32,510 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 188.0) internal successors, (4700), 25 states have internal predecessors, (4700), 0 states have call successors, (0), 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 20:24:32,512 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 188.0) internal successors, (4700), 25 states have internal predecessors, (4700), 0 states have call successors, (0), 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 20:24:32,513 INFO L175 Difference]: Start difference. First operand has 225 places, 212 transitions, 907 flow. Second operand 24 states and 3770 transitions. [2022-11-18 20:24:32,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 291 transitions, 1530 flow [2022-11-18 20:24:32,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 291 transitions, 1520 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 20:24:32,530 INFO L231 Difference]: Finished difference. Result has 245 places, 227 transitions, 1156 flow [2022-11-18 20:24:32,531 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=865, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1156, PETRI_PLACES=245, PETRI_TRANSITIONS=227} [2022-11-18 20:24:32,532 INFO L288 CegarLoopForPetriNet]: 173 programPoint places, 72 predicate places. [2022-11-18 20:24:32,532 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 227 transitions, 1156 flow [2022-11-18 20:24:32,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 155.625) internal successors, (2490), 16 states have internal predecessors, (2490), 0 states have call successors, (0), 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 20:24:32,533 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:24:32,534 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:24:32,543 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59164b2f-f9fd-437b-9270-e42b97a1e99f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-18 20:24:32,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59164b2f-f9fd-437b-9270-e42b97a1e99f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:24:32,740 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-18 20:24:32,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:24:32,741 INFO L85 PathProgramCache]: Analyzing trace with hash 552259931, now seen corresponding path program 1 times [2022-11-18 20:24:32,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:24:32,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756278291] [2022-11-18 20:24:32,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:24:32,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:24:32,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:32,954 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:24:32,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:24:32,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756278291] [2022-11-18 20:24:32,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756278291] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:24:32,955 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:24:32,955 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:24:32,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495861457] [2022-11-18 20:24:32,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:24:32,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:24:32,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:24:32,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:24:32,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:24:32,959 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 188 [2022-11-18 20:24:32,960 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 227 transitions, 1156 flow. Second operand has 6 states, 6 states have (on average 156.33333333333334) internal successors, (938), 6 states have internal predecessors, (938), 0 states have call successors, (0), 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 20:24:32,960 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:24:32,960 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 188 [2022-11-18 20:24:32,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:24:33,964 INFO L130 PetriNetUnfolder]: 216/2851 cut-off events. [2022-11-18 20:24:33,965 INFO L131 PetriNetUnfolder]: For 2468/2468 co-relation queries the response was YES. [2022-11-18 20:24:33,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5131 conditions, 2851 events. 216/2851 cut-off events. For 2468/2468 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 20300 event pairs, 45 based on Foata normal form. 24/2804 useless extension candidates. Maximal degree in co-relation 4669. Up to 297 conditions per place. [2022-11-18 20:24:33,985 INFO L137 encePairwiseOnDemand]: 177/188 looper letters, 49 selfloop transitions, 45 changer transitions 2/234 dead transitions. [2022-11-18 20:24:33,985 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 234 transitions, 1342 flow [2022-11-18 20:24:33,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 20:24:33,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-18 20:24:33,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1259 transitions. [2022-11-18 20:24:33,989 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8371010638297872 [2022-11-18 20:24:33,990 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1259 transitions. [2022-11-18 20:24:33,990 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1259 transitions. [2022-11-18 20:24:33,991 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:24:33,991 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1259 transitions. [2022-11-18 20:24:33,994 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 157.375) internal successors, (1259), 8 states have internal predecessors, (1259), 0 states have call successors, (0), 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 20:24:33,998 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 188.0) internal successors, (1692), 9 states have internal predecessors, (1692), 0 states have call successors, (0), 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 20:24:33,999 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 188.0) internal successors, (1692), 9 states have internal predecessors, (1692), 0 states have call successors, (0), 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 20:24:33,999 INFO L175 Difference]: Start difference. First operand has 245 places, 227 transitions, 1156 flow. Second operand 8 states and 1259 transitions. [2022-11-18 20:24:33,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 234 transitions, 1342 flow [2022-11-18 20:24:34,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 234 transitions, 1289 flow, removed 12 selfloop flow, removed 8 redundant places. [2022-11-18 20:24:34,018 INFO L231 Difference]: Finished difference. Result has 241 places, 220 transitions, 1173 flow [2022-11-18 20:24:34,019 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=990, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1173, PETRI_PLACES=241, PETRI_TRANSITIONS=220} [2022-11-18 20:24:34,020 INFO L288 CegarLoopForPetriNet]: 173 programPoint places, 68 predicate places. [2022-11-18 20:24:34,020 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 220 transitions, 1173 flow [2022-11-18 20:24:34,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 156.33333333333334) internal successors, (938), 6 states have internal predecessors, (938), 0 states have call successors, (0), 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 20:24:34,021 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:24:34,021 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:24:34,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-18 20:24:34,022 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-18 20:24:34,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:24:34,022 INFO L85 PathProgramCache]: Analyzing trace with hash -1962896223, now seen corresponding path program 1 times [2022-11-18 20:24:34,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:24:34,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718761081] [2022-11-18 20:24:34,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:24:34,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:24:34,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:34,698 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 0 proven. 219 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-18 20:24:34,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:24:34,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718761081] [2022-11-18 20:24:34,699 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718761081] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:24:34,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [386546442] [2022-11-18 20:24:34,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:24:34,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:24:34,700 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59164b2f-f9fd-437b-9270-e42b97a1e99f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:24:34,703 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59164b2f-f9fd-437b-9270-e42b97a1e99f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:24:34,731 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59164b2f-f9fd-437b-9270-e42b97a1e99f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-18 20:24:34,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:34,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 503 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-18 20:24:34,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:24:35,357 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 0 proven. 187 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-11-18 20:24:35,357 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:24:35,909 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 0 proven. 187 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-11-18 20:24:35,910 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [386546442] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:24:35,910 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:24:35,910 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 17 [2022-11-18 20:24:35,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340338166] [2022-11-18 20:24:35,911 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:24:35,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-18 20:24:35,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:24:35,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-18 20:24:35,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2022-11-18 20:24:35,917 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 188 [2022-11-18 20:24:35,921 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 220 transitions, 1173 flow. Second operand has 18 states, 18 states have (on average 156.22222222222223) internal successors, (2812), 18 states have internal predecessors, (2812), 0 states have call successors, (0), 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 20:24:35,921 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:24:35,921 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 188 [2022-11-18 20:24:35,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:24:38,251 INFO L130 PetriNetUnfolder]: 342/4681 cut-off events. [2022-11-18 20:24:38,251 INFO L131 PetriNetUnfolder]: For 4989/4989 co-relation queries the response was YES. [2022-11-18 20:24:38,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8611 conditions, 4681 events. 342/4681 cut-off events. For 4989/4989 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 36250 event pairs, 82 based on Foata normal form. 24/4584 useless extension candidates. Maximal degree in co-relation 8132. Up to 202 conditions per place. [2022-11-18 20:24:38,287 INFO L137 encePairwiseOnDemand]: 176/188 looper letters, 139 selfloop transitions, 91 changer transitions 5/373 dead transitions. [2022-11-18 20:24:38,287 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 373 transitions, 2651 flow [2022-11-18 20:24:38,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-18 20:24:38,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-11-18 20:24:38,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 4415 transitions. [2022-11-18 20:24:38,295 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8387158054711246 [2022-11-18 20:24:38,296 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 4415 transitions. [2022-11-18 20:24:38,296 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 4415 transitions. [2022-11-18 20:24:38,301 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:24:38,301 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 4415 transitions. [2022-11-18 20:24:38,310 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 157.67857142857142) internal successors, (4415), 28 states have internal predecessors, (4415), 0 states have call successors, (0), 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 20:24:38,319 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 188.0) internal successors, (5452), 29 states have internal predecessors, (5452), 0 states have call successors, (0), 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 20:24:38,322 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 188.0) internal successors, (5452), 29 states have internal predecessors, (5452), 0 states have call successors, (0), 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 20:24:38,323 INFO L175 Difference]: Start difference. First operand has 241 places, 220 transitions, 1173 flow. Second operand 28 states and 4415 transitions. [2022-11-18 20:24:38,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 373 transitions, 2651 flow [2022-11-18 20:24:38,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 373 transitions, 2555 flow, removed 6 selfloop flow, removed 4 redundant places. [2022-11-18 20:24:38,360 INFO L231 Difference]: Finished difference. Result has 274 places, 271 transitions, 2003 flow [2022-11-18 20:24:38,360 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=1126, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=2003, PETRI_PLACES=274, PETRI_TRANSITIONS=271} [2022-11-18 20:24:38,361 INFO L288 CegarLoopForPetriNet]: 173 programPoint places, 101 predicate places. [2022-11-18 20:24:38,361 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 271 transitions, 2003 flow [2022-11-18 20:24:38,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 156.22222222222223) internal successors, (2812), 18 states have internal predecessors, (2812), 0 states have call successors, (0), 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 20:24:38,362 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:24:38,363 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 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 20:24:38,376 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59164b2f-f9fd-437b-9270-e42b97a1e99f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-18 20:24:38,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59164b2f-f9fd-437b-9270-e42b97a1e99f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-18 20:24:38,571 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-18 20:24:38,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:24:38,572 INFO L85 PathProgramCache]: Analyzing trace with hash -1605191363, now seen corresponding path program 1 times [2022-11-18 20:24:38,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:24:38,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259449771] [2022-11-18 20:24:38,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:24:38,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:24:38,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:39,550 INFO L134 CoverageAnalysis]: Checked inductivity of 430 backedges. 0 proven. 349 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-11-18 20:24:39,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:24:39,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259449771] [2022-11-18 20:24:39,551 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259449771] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:24:39,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [555896855] [2022-11-18 20:24:39,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:24:39,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:24:39,552 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59164b2f-f9fd-437b-9270-e42b97a1e99f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:24:39,553 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59164b2f-f9fd-437b-9270-e42b97a1e99f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:24:39,560 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59164b2f-f9fd-437b-9270-e42b97a1e99f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-18 20:24:39,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:39,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 650 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-18 20:24:39,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:24:40,547 INFO L134 CoverageAnalysis]: Checked inductivity of 430 backedges. 0 proven. 349 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-11-18 20:24:40,548 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:24:41,318 INFO L134 CoverageAnalysis]: Checked inductivity of 430 backedges. 0 proven. 349 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-11-18 20:24:41,318 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [555896855] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:24:41,318 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:24:41,319 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 21 [2022-11-18 20:24:41,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717335846] [2022-11-18 20:24:41,319 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:24:41,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-18 20:24:41,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:24:41,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-18 20:24:41,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=358, Unknown=0, NotChecked=0, Total=462 [2022-11-18 20:24:41,324 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 188 [2022-11-18 20:24:41,328 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 271 transitions, 2003 flow. Second operand has 22 states, 22 states have (on average 156.63636363636363) internal successors, (3446), 22 states have internal predecessors, (3446), 0 states have call successors, (0), 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 20:24:41,328 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:24:41,328 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 188 [2022-11-18 20:24:41,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:24:43,985 INFO L130 PetriNetUnfolder]: 479/6355 cut-off events. [2022-11-18 20:24:43,985 INFO L131 PetriNetUnfolder]: For 10534/10534 co-relation queries the response was YES. [2022-11-18 20:24:44,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12275 conditions, 6355 events. 479/6355 cut-off events. For 10534/10534 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 52069 event pairs, 128 based on Foata normal form. 29/6211 useless extension candidates. Maximal degree in co-relation 11567. Up to 316 conditions per place. [2022-11-18 20:24:44,033 INFO L137 encePairwiseOnDemand]: 177/188 looper letters, 159 selfloop transitions, 178 changer transitions 2/477 dead transitions. [2022-11-18 20:24:44,034 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 477 transitions, 4296 flow [2022-11-18 20:24:44,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-18 20:24:44,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-18 20:24:44,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 5506 transitions. [2022-11-18 20:24:44,043 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8367781155015197 [2022-11-18 20:24:44,044 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 5506 transitions. [2022-11-18 20:24:44,044 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 5506 transitions. [2022-11-18 20:24:44,047 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:24:44,048 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 5506 transitions. [2022-11-18 20:24:44,059 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 157.31428571428572) internal successors, (5506), 35 states have internal predecessors, (5506), 0 states have call successors, (0), 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 20:24:44,071 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 188.0) internal successors, (6768), 36 states have internal predecessors, (6768), 0 states have call successors, (0), 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 20:24:44,073 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 188.0) internal successors, (6768), 36 states have internal predecessors, (6768), 0 states have call successors, (0), 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 20:24:44,074 INFO L175 Difference]: Start difference. First operand has 274 places, 271 transitions, 2003 flow. Second operand 35 states and 5506 transitions. [2022-11-18 20:24:44,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 477 transitions, 4296 flow [2022-11-18 20:24:44,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 477 transitions, 4191 flow, removed 38 selfloop flow, removed 4 redundant places. [2022-11-18 20:24:44,130 INFO L231 Difference]: Finished difference. Result has 311 places, 353 transitions, 3455 flow [2022-11-18 20:24:44,130 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=1930, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=3455, PETRI_PLACES=311, PETRI_TRANSITIONS=353} [2022-11-18 20:24:44,131 INFO L288 CegarLoopForPetriNet]: 173 programPoint places, 138 predicate places. [2022-11-18 20:24:44,131 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 353 transitions, 3455 flow [2022-11-18 20:24:44,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 156.63636363636363) internal successors, (3446), 22 states have internal predecessors, (3446), 0 states have call successors, (0), 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 20:24:44,132 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:24:44,133 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:24:44,144 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59164b2f-f9fd-437b-9270-e42b97a1e99f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-18 20:24:44,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59164b2f-f9fd-437b-9270-e42b97a1e99f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-18 20:24:44,340 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-18 20:24:44,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:24:44,340 INFO L85 PathProgramCache]: Analyzing trace with hash 1759046525, now seen corresponding path program 2 times [2022-11-18 20:24:44,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:24:44,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011600471] [2022-11-18 20:24:44,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:24:44,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:24:44,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:24:45,230 INFO L134 CoverageAnalysis]: Checked inductivity of 870 backedges. 0 proven. 870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:24:45,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:24:45,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011600471] [2022-11-18 20:24:45,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011600471] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:24:45,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [204046334] [2022-11-18 20:24:45,231 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:24:45,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:24:45,232 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59164b2f-f9fd-437b-9270-e42b97a1e99f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:24:45,233 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59164b2f-f9fd-437b-9270-e42b97a1e99f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:24:45,244 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59164b2f-f9fd-437b-9270-e42b97a1e99f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-18 20:24:45,468 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:24:45,468 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:24:45,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 660 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-18 20:24:45,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:24:45,988 INFO L134 CoverageAnalysis]: Checked inductivity of 870 backedges. 841 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-11-18 20:24:45,988 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:24:45,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [204046334] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:24:45,989 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:24:45,989 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [15] total 27 [2022-11-18 20:24:45,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139565449] [2022-11-18 20:24:45,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:24:45,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-18 20:24:45,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:24:45,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-18 20:24:45,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=584, Unknown=0, NotChecked=0, Total=702 [2022-11-18 20:24:45,995 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 166 out of 188 [2022-11-18 20:24:45,998 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 353 transitions, 3455 flow. Second operand has 13 states, 13 states have (on average 169.07692307692307) internal successors, (2198), 13 states have internal predecessors, (2198), 0 states have call successors, (0), 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 20:24:45,998 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:24:45,998 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 166 of 188 [2022-11-18 20:24:45,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:24:47,687 INFO L130 PetriNetUnfolder]: 130/5371 cut-off events. [2022-11-18 20:24:47,687 INFO L131 PetriNetUnfolder]: For 7492/7492 co-relation queries the response was YES. [2022-11-18 20:24:47,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9695 conditions, 5371 events. 130/5371 cut-off events. For 7492/7492 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 39812 event pairs, 1 based on Foata normal form. 27/5265 useless extension candidates. Maximal degree in co-relation 9644. Up to 144 conditions per place. [2022-11-18 20:24:47,723 INFO L137 encePairwiseOnDemand]: 182/188 looper letters, 0 selfloop transitions, 0 changer transitions 331/331 dead transitions. [2022-11-18 20:24:47,723 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 331 transitions, 2710 flow [2022-11-18 20:24:47,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-18 20:24:47,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-18 20:24:47,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3045 transitions. [2022-11-18 20:24:47,727 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.899822695035461 [2022-11-18 20:24:47,728 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3045 transitions. [2022-11-18 20:24:47,728 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3045 transitions. [2022-11-18 20:24:47,729 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:24:47,729 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3045 transitions. [2022-11-18 20:24:47,734 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 169.16666666666666) internal successors, (3045), 18 states have internal predecessors, (3045), 0 states have call successors, (0), 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 20:24:47,739 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 188.0) internal successors, (3572), 19 states have internal predecessors, (3572), 0 states have call successors, (0), 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 20:24:47,740 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 188.0) internal successors, (3572), 19 states have internal predecessors, (3572), 0 states have call successors, (0), 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 20:24:47,741 INFO L175 Difference]: Start difference. First operand has 311 places, 353 transitions, 3455 flow. Second operand 18 states and 3045 transitions. [2022-11-18 20:24:47,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 331 transitions, 2710 flow [2022-11-18 20:24:47,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 331 transitions, 2472 flow, removed 31 selfloop flow, removed 27 redundant places. [2022-11-18 20:24:47,787 INFO L231 Difference]: Finished difference. Result has 292 places, 0 transitions, 0 flow [2022-11-18 20:24:47,787 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=2210, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=291, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=0, PETRI_PLACES=292, PETRI_TRANSITIONS=0} [2022-11-18 20:24:47,788 INFO L288 CegarLoopForPetriNet]: 173 programPoint places, 119 predicate places. [2022-11-18 20:24:47,788 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 0 transitions, 0 flow [2022-11-18 20:24:47,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 169.07692307692307) internal successors, (2198), 13 states have internal predecessors, (2198), 0 states have call successors, (0), 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 20:24:47,792 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 18 remaining) [2022-11-18 20:24:47,792 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 18 remaining) [2022-11-18 20:24:47,792 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 18 remaining) [2022-11-18 20:24:47,793 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 18 remaining) [2022-11-18 20:24:47,793 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 18 remaining) [2022-11-18 20:24:47,793 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 18 remaining) [2022-11-18 20:24:47,793 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 18 remaining) [2022-11-18 20:24:47,793 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 18 remaining) [2022-11-18 20:24:47,793 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 18 remaining) [2022-11-18 20:24:47,794 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 18 remaining) [2022-11-18 20:24:47,794 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 18 remaining) [2022-11-18 20:24:47,794 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 18 remaining) [2022-11-18 20:24:47,794 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 18 remaining) [2022-11-18 20:24:47,794 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 18 remaining) [2022-11-18 20:24:47,795 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 18 remaining) [2022-11-18 20:24:47,795 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 18 remaining) [2022-11-18 20:24:47,795 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 18 remaining) [2022-11-18 20:24:47,795 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 18 remaining) [2022-11-18 20:24:47,806 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59164b2f-f9fd-437b-9270-e42b97a1e99f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-11-18 20:24:48,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59164b2f-f9fd-437b-9270-e42b97a1e99f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-18 20:24:48,001 INFO L444 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:24:48,006 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-18 20:24:48,006 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-18 20:24:48,010 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 08:24:48 BasicIcfg [2022-11-18 20:24:48,010 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-18 20:24:48,010 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-18 20:24:48,011 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-18 20:24:48,011 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-18 20:24:48,011 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:24:16" (3/4) ... [2022-11-18 20:24:48,014 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-18 20:24:48,025 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t1 [2022-11-18 20:24:48,025 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t2 [2022-11-18 20:24:48,030 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2022-11-18 20:24:48,031 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-18 20:24:48,031 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-18 20:24:48,031 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-18 20:24:48,063 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59164b2f-f9fd-437b-9270-e42b97a1e99f/bin/uautomizer-TMbwUNV5ro/witness.graphml [2022-11-18 20:24:48,063 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-18 20:24:48,064 INFO L158 Benchmark]: Toolchain (without parser) took 33269.24ms. Allocated memory was 88.1MB in the beginning and 1.1GB in the end (delta: 981.5MB). Free memory was 48.4MB in the beginning and 534.0MB in the end (delta: -485.7MB). Peak memory consumption was 495.0MB. Max. memory is 16.1GB. [2022-11-18 20:24:48,064 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 88.1MB. Free memory is still 67.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 20:24:48,064 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1067.64ms. Allocated memory was 88.1MB in the beginning and 115.3MB in the end (delta: 27.3MB). Free memory was 48.2MB in the beginning and 72.4MB in the end (delta: -24.2MB). Peak memory consumption was 4.4MB. Max. memory is 16.1GB. [2022-11-18 20:24:48,065 INFO L158 Benchmark]: Boogie Procedure Inliner took 70.61ms. Allocated memory is still 115.3MB. Free memory was 72.4MB in the beginning and 69.6MB in the end (delta: 2.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-18 20:24:48,065 INFO L158 Benchmark]: Boogie Preprocessor took 46.78ms. Allocated memory is still 115.3MB. Free memory was 69.6MB in the beginning and 68.0MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 20:24:48,065 INFO L158 Benchmark]: RCFGBuilder took 832.23ms. Allocated memory is still 115.3MB. Free memory was 67.5MB in the beginning and 49.8MB in the end (delta: 17.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-18 20:24:48,068 INFO L158 Benchmark]: TraceAbstraction took 31190.12ms. Allocated memory was 115.3MB in the beginning and 1.1GB in the end (delta: 954.2MB). Free memory was 49.1MB in the beginning and 536.5MB in the end (delta: -487.3MB). Peak memory consumption was 469.3MB. Max. memory is 16.1GB. [2022-11-18 20:24:48,069 INFO L158 Benchmark]: Witness Printer took 52.82ms. Allocated memory is still 1.1GB. Free memory was 536.5MB in the beginning and 534.0MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-18 20:24:48,071 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 88.1MB. Free memory is still 67.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1067.64ms. Allocated memory was 88.1MB in the beginning and 115.3MB in the end (delta: 27.3MB). Free memory was 48.2MB in the beginning and 72.4MB in the end (delta: -24.2MB). Peak memory consumption was 4.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 70.61ms. Allocated memory is still 115.3MB. Free memory was 72.4MB in the beginning and 69.6MB in the end (delta: 2.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 46.78ms. Allocated memory is still 115.3MB. Free memory was 69.6MB in the beginning and 68.0MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 832.23ms. Allocated memory is still 115.3MB. Free memory was 67.5MB in the beginning and 49.8MB in the end (delta: 17.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 31190.12ms. Allocated memory was 115.3MB in the beginning and 1.1GB in the end (delta: 954.2MB). Free memory was 49.1MB in the beginning and 536.5MB in the end (delta: -487.3MB). Peak memory consumption was 469.3MB. Max. memory is 16.1GB. * Witness Printer took 52.82ms. Allocated memory is still 1.1GB. Free memory was 536.5MB in the beginning and 534.0MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 992]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 992]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 946]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 946]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 1006]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 1006]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 950]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 950]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 302 locations, 18 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 31.0s, OverallIterations: 18, TraceHistogramMax: 7, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 16.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 949 SdHoareTripleChecker+Valid, 1.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 949 mSDsluCounter, 390 SdHoareTripleChecker+Invalid, 1.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 264 mSDsCounter, 117 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1660 IncrementalHoareTripleChecker+Invalid, 1777 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 117 mSolverCounterUnsat, 126 mSDtfsCounter, 1660 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2545 GetRequests, 2319 SyntacticMatches, 1 SemanticMatches, 225 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1318 ImplicationChecksByTransitivity, 2.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3455occurred in iteration=17, InterpolantAutomatonStates: 196, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 9.8s InterpolantComputationTime, 3911 NumberOfCodeBlocks, 3911 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 4730 ConstructedInterpolants, 0 QuantifiedInterpolants, 12012 SizeOfPredicates, 48 NumberOfNonLiveVariables, 3107 ConjunctsInSsa, 64 ConjunctsInUnsatCore, 30 InterpolantComputations, 14 PerfectInterpolantSequences, 1368/4174 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-18 20:24:48,091 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59164b2f-f9fd-437b-9270-e42b97a1e99f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE