./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/clever.wvr.c --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_3a10618f-975a-4892-ac1b-d1e82b432834/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a10618f-975a-4892-ac1b-d1e82b432834/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_3a10618f-975a-4892-ac1b-d1e82b432834/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a10618f-975a-4892-ac1b-d1e82b432834/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/clever.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a10618f-975a-4892-ac1b-d1e82b432834/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_3a10618f-975a-4892-ac1b-d1e82b432834/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 93a2fdd4bcf1d0c2ab8b4e49feeb28ec4b1782148939310f1cb0ffe97948195e --- 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 21:09:13,575 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 21:09:13,577 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 21:09:13,599 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 21:09:13,599 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 21:09:13,601 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 21:09:13,602 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 21:09:13,604 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 21:09:13,606 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 21:09:13,607 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 21:09:13,608 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 21:09:13,609 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 21:09:13,610 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 21:09:13,611 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 21:09:13,612 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 21:09:13,614 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 21:09:13,615 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 21:09:13,616 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 21:09:13,618 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 21:09:13,621 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 21:09:13,627 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 21:09:13,630 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 21:09:13,632 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 21:09:13,638 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 21:09:13,641 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 21:09:13,649 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 21:09:13,649 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 21:09:13,650 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 21:09:13,651 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 21:09:13,652 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 21:09:13,652 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 21:09:13,653 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 21:09:13,654 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 21:09:13,654 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 21:09:13,658 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 21:09:13,658 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 21:09:13,660 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 21:09:13,660 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 21:09:13,661 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 21:09:13,662 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 21:09:13,663 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 21:09:13,664 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a10618f-975a-4892-ac1b-d1e82b432834/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-18 21:09:13,704 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 21:09:13,705 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 21:09:13,706 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 21:09:13,706 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 21:09:13,707 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 21:09:13,707 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 21:09:13,708 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 21:09:13,708 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 21:09:13,708 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 21:09:13,708 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 21:09:13,709 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 21:09:13,710 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 21:09:13,710 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 21:09:13,710 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 21:09:13,710 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 21:09:13,710 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 21:09:13,711 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 21:09:13,711 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 21:09:13,711 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-18 21:09:13,711 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 21:09:13,711 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 21:09:13,712 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 21:09:13,712 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 21:09:13,712 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 21:09:13,712 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 21:09:13,712 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 21:09:13,714 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 21:09:13,714 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 21:09:13,715 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 21:09:13,715 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 21:09:13,715 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 21:09:13,715 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 21:09:13,716 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 21:09:13,716 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 21:09:13,716 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 21:09:13,716 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_3a10618f-975a-4892-ac1b-d1e82b432834/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a10618f-975a-4892-ac1b-d1e82b432834/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 93a2fdd4bcf1d0c2ab8b4e49feeb28ec4b1782148939310f1cb0ffe97948195e [2022-11-18 21:09:14,070 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 21:09:14,095 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 21:09:14,098 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 21:09:14,099 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 21:09:14,100 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 21:09:14,101 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a10618f-975a-4892-ac1b-d1e82b432834/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/weaver/clever.wvr.c [2022-11-18 21:09:14,171 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a10618f-975a-4892-ac1b-d1e82b432834/bin/uautomizer-TMbwUNV5ro/data/35b0f9a4f/20af3acc60cf4618994ac34987534ccd/FLAG2ca435e31 [2022-11-18 21:09:14,624 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 21:09:14,625 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a10618f-975a-4892-ac1b-d1e82b432834/sv-benchmarks/c/weaver/clever.wvr.c [2022-11-18 21:09:14,632 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a10618f-975a-4892-ac1b-d1e82b432834/bin/uautomizer-TMbwUNV5ro/data/35b0f9a4f/20af3acc60cf4618994ac34987534ccd/FLAG2ca435e31 [2022-11-18 21:09:15,022 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a10618f-975a-4892-ac1b-d1e82b432834/bin/uautomizer-TMbwUNV5ro/data/35b0f9a4f/20af3acc60cf4618994ac34987534ccd [2022-11-18 21:09:15,026 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 21:09:15,031 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 21:09:15,034 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 21:09:15,035 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 21:09:15,039 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 21:09:15,040 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:09:15" (1/1) ... [2022-11-18 21:09:15,042 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@188cac1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:09:15, skipping insertion in model container [2022-11-18 21:09:15,042 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:09:15" (1/1) ... [2022-11-18 21:09:15,050 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 21:09:15,068 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 21:09:15,336 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_3a10618f-975a-4892-ac1b-d1e82b432834/sv-benchmarks/c/weaver/clever.wvr.c[2133,2146] [2022-11-18 21:09:15,338 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 21:09:15,356 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 21:09:15,398 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_3a10618f-975a-4892-ac1b-d1e82b432834/sv-benchmarks/c/weaver/clever.wvr.c[2133,2146] [2022-11-18 21:09:15,400 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 21:09:15,417 INFO L208 MainTranslator]: Completed translation [2022-11-18 21:09:15,418 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:09:15 WrapperNode [2022-11-18 21:09:15,418 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 21:09:15,419 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 21:09:15,419 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 21:09:15,420 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 21:09:15,427 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:09:15" (1/1) ... [2022-11-18 21:09:15,447 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:09:15" (1/1) ... [2022-11-18 21:09:15,475 INFO L138 Inliner]: procedures = 19, calls = 21, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 78 [2022-11-18 21:09:15,475 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 21:09:15,476 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 21:09:15,476 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 21:09:15,477 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 21:09:15,486 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:09:15" (1/1) ... [2022-11-18 21:09:15,487 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:09:15" (1/1) ... [2022-11-18 21:09:15,493 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:09:15" (1/1) ... [2022-11-18 21:09:15,494 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:09:15" (1/1) ... [2022-11-18 21:09:15,507 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:09:15" (1/1) ... [2022-11-18 21:09:15,512 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:09:15" (1/1) ... [2022-11-18 21:09:15,514 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:09:15" (1/1) ... [2022-11-18 21:09:15,515 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:09:15" (1/1) ... [2022-11-18 21:09:15,517 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 21:09:15,518 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 21:09:15,518 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 21:09:15,518 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 21:09:15,526 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:09:15" (1/1) ... [2022-11-18 21:09:15,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 21:09:15,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a10618f-975a-4892-ac1b-d1e82b432834/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:09:15,556 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a10618f-975a-4892-ac1b-d1e82b432834/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 21:09:15,558 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a10618f-975a-4892-ac1b-d1e82b432834/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 21:09:15,599 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 21:09:15,599 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-18 21:09:15,599 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-18 21:09:15,599 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-18 21:09:15,599 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-18 21:09:15,600 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 21:09:15,600 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 21:09:15,600 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 21:09:15,600 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 21:09:15,600 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 21:09:15,600 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 21:09:15,601 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 21:09:15,602 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 21:09:15,759 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 21:09:15,761 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 21:09:16,106 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 21:09:16,117 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 21:09:16,120 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-18 21:09:16,122 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:09:16 BoogieIcfgContainer [2022-11-18 21:09:16,124 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 21:09:16,126 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 21:09:16,128 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 21:09:16,131 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 21:09:16,132 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 09:09:15" (1/3) ... [2022-11-18 21:09:16,133 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@171ae442 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:09:16, skipping insertion in model container [2022-11-18 21:09:16,133 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:09:15" (2/3) ... [2022-11-18 21:09:16,134 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@171ae442 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:09:16, skipping insertion in model container [2022-11-18 21:09:16,134 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:09:16" (3/3) ... [2022-11-18 21:09:16,136 INFO L112 eAbstractionObserver]: Analyzing ICFG clever.wvr.c [2022-11-18 21:09:16,146 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 21:09:16,156 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 21:09:16,157 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-11-18 21:09:16,157 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 21:09:16,277 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-18 21:09:16,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 130 places, 132 transitions, 280 flow [2022-11-18 21:09:16,372 INFO L130 PetriNetUnfolder]: 9/130 cut-off events. [2022-11-18 21:09:16,372 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-18 21:09:16,377 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139 conditions, 130 events. 9/130 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 136 event pairs, 0 based on Foata normal form. 0/115 useless extension candidates. Maximal degree in co-relation 93. Up to 2 conditions per place. [2022-11-18 21:09:16,377 INFO L82 GeneralOperation]: Start removeDead. Operand has 130 places, 132 transitions, 280 flow [2022-11-18 21:09:16,382 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 110 places, 111 transitions, 231 flow [2022-11-18 21:09:16,394 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 21:09:16,400 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;@64dbff3d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 21:09:16,401 INFO L358 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2022-11-18 21:09:16,422 INFO L130 PetriNetUnfolder]: 4/75 cut-off events. [2022-11-18 21:09:16,423 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 21:09:16,423 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:09:16,424 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] [2022-11-18 21:09:16,424 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-18 21:09:16,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:09:16,429 INFO L85 PathProgramCache]: Analyzing trace with hash 382973249, now seen corresponding path program 1 times [2022-11-18 21:09:16,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:09:16,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961161576] [2022-11-18 21:09:16,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:09:16,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:09:16,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:09:16,766 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 21:09:16,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:09:16,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961161576] [2022-11-18 21:09:16,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961161576] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:09:16,769 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:09:16,769 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 21:09:16,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441310798] [2022-11-18 21:09:16,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:09:16,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-18 21:09:16,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:09:16,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-18 21:09:16,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 21:09:16,828 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 132 [2022-11-18 21:09:16,833 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 111 transitions, 231 flow. Second operand has 2 states, 2 states have (on average 122.0) internal successors, (244), 2 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:16,834 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:09:16,834 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 132 [2022-11-18 21:09:16,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:09:16,925 INFO L130 PetriNetUnfolder]: 3/106 cut-off events. [2022-11-18 21:09:16,925 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-11-18 21:09:16,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118 conditions, 106 events. 3/106 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 125 event pairs, 0 based on Foata normal form. 8/103 useless extension candidates. Maximal degree in co-relation 90. Up to 4 conditions per place. [2022-11-18 21:09:16,929 INFO L137 encePairwiseOnDemand]: 127/132 looper letters, 3 selfloop transitions, 0 changer transitions 2/106 dead transitions. [2022-11-18 21:09:16,930 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 106 transitions, 227 flow [2022-11-18 21:09:16,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-18 21:09:16,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-18 21:09:16,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 250 transitions. [2022-11-18 21:09:16,948 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.946969696969697 [2022-11-18 21:09:16,949 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 250 transitions. [2022-11-18 21:09:16,950 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 250 transitions. [2022-11-18 21:09:16,952 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:09:16,955 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 250 transitions. [2022-11-18 21:09:16,961 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 125.0) internal successors, (250), 2 states have internal predecessors, (250), 0 states have call successors, (0), 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 21:09:16,965 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 132.0) internal successors, (396), 3 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:16,966 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 132.0) internal successors, (396), 3 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:16,968 INFO L175 Difference]: Start difference. First operand has 110 places, 111 transitions, 231 flow. Second operand 2 states and 250 transitions. [2022-11-18 21:09:16,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 106 transitions, 227 flow [2022-11-18 21:09:16,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 106 transitions, 222 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 21:09:16,978 INFO L231 Difference]: Finished difference. Result has 108 places, 104 transitions, 212 flow [2022-11-18 21:09:16,981 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=212, PETRI_PLACES=108, PETRI_TRANSITIONS=104} [2022-11-18 21:09:16,990 INFO L288 CegarLoopForPetriNet]: 110 programPoint places, -2 predicate places. [2022-11-18 21:09:16,991 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 104 transitions, 212 flow [2022-11-18 21:09:16,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 122.0) internal successors, (244), 2 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:16,992 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:09:16,993 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] [2022-11-18 21:09:16,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 21:09:16,994 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-18 21:09:16,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:09:16,996 INFO L85 PathProgramCache]: Analyzing trace with hash 382974210, now seen corresponding path program 1 times [2022-11-18 21:09:16,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:09:16,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846690836] [2022-11-18 21:09:16,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:09:16,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:09:17,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:09:17,257 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 21:09:17,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:09:17,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846690836] [2022-11-18 21:09:17,258 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846690836] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:09:17,259 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:09:17,259 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 21:09:17,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447119427] [2022-11-18 21:09:17,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:09:17,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 21:09:17,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:09:17,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 21:09:17,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 21:09:17,264 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 132 [2022-11-18 21:09:17,265 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 104 transitions, 212 flow. Second operand has 6 states, 6 states have (on average 104.0) internal successors, (624), 6 states have internal predecessors, (624), 0 states have call successors, (0), 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 21:09:17,265 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:09:17,265 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 132 [2022-11-18 21:09:17,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:09:17,427 INFO L130 PetriNetUnfolder]: 34/213 cut-off events. [2022-11-18 21:09:17,427 INFO L131 PetriNetUnfolder]: For 3/9 co-relation queries the response was YES. [2022-11-18 21:09:17,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 303 conditions, 213 events. 34/213 cut-off events. For 3/9 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 770 event pairs, 5 based on Foata normal form. 1/176 useless extension candidates. Maximal degree in co-relation 300. Up to 28 conditions per place. [2022-11-18 21:09:17,430 INFO L137 encePairwiseOnDemand]: 122/132 looper letters, 21 selfloop transitions, 9 changer transitions 0/112 dead transitions. [2022-11-18 21:09:17,431 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 112 transitions, 294 flow [2022-11-18 21:09:17,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 21:09:17,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-18 21:09:17,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 847 transitions. [2022-11-18 21:09:17,437 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8020833333333334 [2022-11-18 21:09:17,437 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 847 transitions. [2022-11-18 21:09:17,437 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 847 transitions. [2022-11-18 21:09:17,438 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:09:17,438 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 847 transitions. [2022-11-18 21:09:17,441 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 105.875) internal successors, (847), 8 states have internal predecessors, (847), 0 states have call successors, (0), 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 21:09:17,446 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 132.0) internal successors, (1188), 9 states have internal predecessors, (1188), 0 states have call successors, (0), 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 21:09:17,447 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 132.0) internal successors, (1188), 9 states have internal predecessors, (1188), 0 states have call successors, (0), 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 21:09:17,448 INFO L175 Difference]: Start difference. First operand has 108 places, 104 transitions, 212 flow. Second operand 8 states and 847 transitions. [2022-11-18 21:09:17,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 112 transitions, 294 flow [2022-11-18 21:09:17,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 112 transitions, 294 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 21:09:17,451 INFO L231 Difference]: Finished difference. Result has 112 places, 103 transitions, 228 flow [2022-11-18 21:09:17,452 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=228, PETRI_PLACES=112, PETRI_TRANSITIONS=103} [2022-11-18 21:09:17,453 INFO L288 CegarLoopForPetriNet]: 110 programPoint places, 2 predicate places. [2022-11-18 21:09:17,453 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 103 transitions, 228 flow [2022-11-18 21:09:17,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 104.0) internal successors, (624), 6 states have internal predecessors, (624), 0 states have call successors, (0), 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 21:09:17,454 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:09:17,454 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] [2022-11-18 21:09:17,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 21:09:17,455 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-18 21:09:17,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:09:17,456 INFO L85 PathProgramCache]: Analyzing trace with hash -1012701034, now seen corresponding path program 1 times [2022-11-18 21:09:17,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:09:17,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786095341] [2022-11-18 21:09:17,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:09:17,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:09:17,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:09:17,619 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 21:09:17,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:09:17,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786095341] [2022-11-18 21:09:17,621 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786095341] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:09:17,622 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:09:17,622 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 21:09:17,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321058140] [2022-11-18 21:09:17,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:09:17,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 21:09:17,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:09:17,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 21:09:17,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 21:09:17,627 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 132 [2022-11-18 21:09:17,628 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 103 transitions, 228 flow. Second operand has 5 states, 5 states have (on average 108.2) internal successors, (541), 5 states have internal predecessors, (541), 0 states have call successors, (0), 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 21:09:17,628 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:09:17,628 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 132 [2022-11-18 21:09:17,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:09:17,712 INFO L130 PetriNetUnfolder]: 12/145 cut-off events. [2022-11-18 21:09:17,712 INFO L131 PetriNetUnfolder]: For 5/7 co-relation queries the response was YES. [2022-11-18 21:09:17,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 206 conditions, 145 events. 12/145 cut-off events. For 5/7 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 367 event pairs, 5 based on Foata normal form. 0/131 useless extension candidates. Maximal degree in co-relation 202. Up to 15 conditions per place. [2022-11-18 21:09:17,714 INFO L137 encePairwiseOnDemand]: 126/132 looper letters, 12 selfloop transitions, 5 changer transitions 0/103 dead transitions. [2022-11-18 21:09:17,715 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 103 transitions, 264 flow [2022-11-18 21:09:17,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 21:09:17,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 21:09:17,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 548 transitions. [2022-11-18 21:09:17,721 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8303030303030303 [2022-11-18 21:09:17,721 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 548 transitions. [2022-11-18 21:09:17,721 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 548 transitions. [2022-11-18 21:09:17,722 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:09:17,722 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 548 transitions. [2022-11-18 21:09:17,724 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 109.6) internal successors, (548), 5 states have internal predecessors, (548), 0 states have call successors, (0), 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 21:09:17,727 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 132.0) internal successors, (792), 6 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:17,727 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 132.0) internal successors, (792), 6 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:17,728 INFO L175 Difference]: Start difference. First operand has 112 places, 103 transitions, 228 flow. Second operand 5 states and 548 transitions. [2022-11-18 21:09:17,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 103 transitions, 264 flow [2022-11-18 21:09:17,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 103 transitions, 246 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-11-18 21:09:17,731 INFO L231 Difference]: Finished difference. Result has 108 places, 102 transitions, 218 flow [2022-11-18 21:09:17,732 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=218, PETRI_PLACES=108, PETRI_TRANSITIONS=102} [2022-11-18 21:09:17,733 INFO L288 CegarLoopForPetriNet]: 110 programPoint places, -2 predicate places. [2022-11-18 21:09:17,733 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 102 transitions, 218 flow [2022-11-18 21:09:17,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 108.2) internal successors, (541), 5 states have internal predecessors, (541), 0 states have call successors, (0), 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 21:09:17,734 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:09:17,734 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] [2022-11-18 21:09:17,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 21:09:17,734 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-18 21:09:17,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:09:17,735 INFO L85 PathProgramCache]: Analyzing trace with hash 1781477049, now seen corresponding path program 1 times [2022-11-18 21:09:17,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:09:17,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204053263] [2022-11-18 21:09:17,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:09:17,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:09:17,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:09:17,866 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 21:09:17,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:09:17,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204053263] [2022-11-18 21:09:17,867 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204053263] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:09:17,867 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:09:17,868 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 21:09:17,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268034098] [2022-11-18 21:09:17,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:09:17,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 21:09:17,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:09:17,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 21:09:17,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 21:09:17,870 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 132 [2022-11-18 21:09:17,871 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 102 transitions, 218 flow. Second operand has 4 states, 4 states have (on average 110.75) internal successors, (443), 4 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:17,871 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:09:17,871 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 132 [2022-11-18 21:09:17,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:09:17,959 INFO L130 PetriNetUnfolder]: 23/179 cut-off events. [2022-11-18 21:09:17,959 INFO L131 PetriNetUnfolder]: For 2/5 co-relation queries the response was YES. [2022-11-18 21:09:17,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 287 conditions, 179 events. 23/179 cut-off events. For 2/5 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 552 event pairs, 9 based on Foata normal form. 1/164 useless extension candidates. Maximal degree in co-relation 283. Up to 34 conditions per place. [2022-11-18 21:09:17,961 INFO L137 encePairwiseOnDemand]: 124/132 looper letters, 21 selfloop transitions, 6 changer transitions 0/114 dead transitions. [2022-11-18 21:09:17,962 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 114 transitions, 303 flow [2022-11-18 21:09:17,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 21:09:17,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 21:09:17,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 574 transitions. [2022-11-18 21:09:17,964 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8696969696969697 [2022-11-18 21:09:17,964 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 574 transitions. [2022-11-18 21:09:17,965 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 574 transitions. [2022-11-18 21:09:17,965 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:09:17,965 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 574 transitions. [2022-11-18 21:09:17,967 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 114.8) internal successors, (574), 5 states have internal predecessors, (574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:17,969 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 132.0) internal successors, (792), 6 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:17,970 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 132.0) internal successors, (792), 6 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:17,970 INFO L175 Difference]: Start difference. First operand has 108 places, 102 transitions, 218 flow. Second operand 5 states and 574 transitions. [2022-11-18 21:09:17,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 114 transitions, 303 flow [2022-11-18 21:09:17,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 114 transitions, 293 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 21:09:17,977 INFO L231 Difference]: Finished difference. Result has 112 places, 106 transitions, 252 flow [2022-11-18 21:09:17,977 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=252, PETRI_PLACES=112, PETRI_TRANSITIONS=106} [2022-11-18 21:09:17,978 INFO L288 CegarLoopForPetriNet]: 110 programPoint places, 2 predicate places. [2022-11-18 21:09:17,978 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 106 transitions, 252 flow [2022-11-18 21:09:17,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 110.75) internal successors, (443), 4 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:17,979 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:09:17,979 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] [2022-11-18 21:09:17,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 21:09:17,980 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-18 21:09:17,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:09:17,980 INFO L85 PathProgramCache]: Analyzing trace with hash 762291240, now seen corresponding path program 1 times [2022-11-18 21:09:17,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:09:17,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578485808] [2022-11-18 21:09:17,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:09:17,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:09:18,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:09:18,158 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 21:09:18,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:09:18,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578485808] [2022-11-18 21:09:18,159 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578485808] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:09:18,159 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:09:18,159 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 21:09:18,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789708216] [2022-11-18 21:09:18,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:09:18,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 21:09:18,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:09:18,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 21:09:18,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 21:09:18,164 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 132 [2022-11-18 21:09:18,166 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 106 transitions, 252 flow. Second operand has 6 states, 6 states have (on average 104.16666666666667) internal successors, (625), 6 states have internal predecessors, (625), 0 states have call successors, (0), 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 21:09:18,166 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:09:18,167 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 132 [2022-11-18 21:09:18,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:09:18,319 INFO L130 PetriNetUnfolder]: 59/280 cut-off events. [2022-11-18 21:09:18,319 INFO L131 PetriNetUnfolder]: For 24/30 co-relation queries the response was YES. [2022-11-18 21:09:18,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 452 conditions, 280 events. 59/280 cut-off events. For 24/30 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1184 event pairs, 10 based on Foata normal form. 0/236 useless extension candidates. Maximal degree in co-relation 445. Up to 52 conditions per place. [2022-11-18 21:09:18,322 INFO L137 encePairwiseOnDemand]: 122/132 looper letters, 21 selfloop transitions, 9 changer transitions 0/114 dead transitions. [2022-11-18 21:09:18,323 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 114 transitions, 331 flow [2022-11-18 21:09:18,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 21:09:18,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-18 21:09:18,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 847 transitions. [2022-11-18 21:09:18,326 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8020833333333334 [2022-11-18 21:09:18,326 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 847 transitions. [2022-11-18 21:09:18,326 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 847 transitions. [2022-11-18 21:09:18,327 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:09:18,327 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 847 transitions. [2022-11-18 21:09:18,329 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 105.875) internal successors, (847), 8 states have internal predecessors, (847), 0 states have call successors, (0), 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 21:09:18,332 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 132.0) internal successors, (1188), 9 states have internal predecessors, (1188), 0 states have call successors, (0), 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 21:09:18,333 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 132.0) internal successors, (1188), 9 states have internal predecessors, (1188), 0 states have call successors, (0), 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 21:09:18,333 INFO L175 Difference]: Start difference. First operand has 112 places, 106 transitions, 252 flow. Second operand 8 states and 847 transitions. [2022-11-18 21:09:18,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 114 transitions, 331 flow [2022-11-18 21:09:18,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 114 transitions, 331 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 21:09:18,337 INFO L231 Difference]: Finished difference. Result has 118 places, 105 transitions, 268 flow [2022-11-18 21:09:18,338 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=268, PETRI_PLACES=118, PETRI_TRANSITIONS=105} [2022-11-18 21:09:18,341 INFO L288 CegarLoopForPetriNet]: 110 programPoint places, 8 predicate places. [2022-11-18 21:09:18,342 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 105 transitions, 268 flow [2022-11-18 21:09:18,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 104.16666666666667) internal successors, (625), 6 states have internal predecessors, (625), 0 states have call successors, (0), 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 21:09:18,344 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:09:18,344 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] [2022-11-18 21:09:18,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 21:09:18,345 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-18 21:09:18,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:09:18,349 INFO L85 PathProgramCache]: Analyzing trace with hash -2138774971, now seen corresponding path program 1 times [2022-11-18 21:09:18,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:09:18,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699136268] [2022-11-18 21:09:18,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:09:18,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:09:18,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:09:18,519 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 21:09:18,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:09:18,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699136268] [2022-11-18 21:09:18,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699136268] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:09:18,520 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:09:18,520 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 21:09:18,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698863169] [2022-11-18 21:09:18,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:09:18,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 21:09:18,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:09:18,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 21:09:18,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 21:09:18,522 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 132 [2022-11-18 21:09:18,523 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 105 transitions, 268 flow. Second operand has 5 states, 5 states have (on average 108.4) internal successors, (542), 5 states have internal predecessors, (542), 0 states have call successors, (0), 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 21:09:18,523 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:09:18,524 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 132 [2022-11-18 21:09:18,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:09:18,613 INFO L130 PetriNetUnfolder]: 18/155 cut-off events. [2022-11-18 21:09:18,613 INFO L131 PetriNetUnfolder]: For 25/26 co-relation queries the response was YES. [2022-11-18 21:09:18,614 INFO L83 FinitePrefix]: Finished finitePrefix Result has 244 conditions, 155 events. 18/155 cut-off events. For 25/26 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 443 event pairs, 4 based on Foata normal form. 0/144 useless extension candidates. Maximal degree in co-relation 236. Up to 21 conditions per place. [2022-11-18 21:09:18,615 INFO L137 encePairwiseOnDemand]: 126/132 looper letters, 10 selfloop transitions, 5 changer transitions 4/105 dead transitions. [2022-11-18 21:09:18,615 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 105 transitions, 303 flow [2022-11-18 21:09:18,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 21:09:18,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 21:09:18,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 548 transitions. [2022-11-18 21:09:18,620 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8303030303030303 [2022-11-18 21:09:18,620 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 548 transitions. [2022-11-18 21:09:18,620 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 548 transitions. [2022-11-18 21:09:18,620 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:09:18,621 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 548 transitions. [2022-11-18 21:09:18,622 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 109.6) internal successors, (548), 5 states have internal predecessors, (548), 0 states have call successors, (0), 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 21:09:18,624 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 132.0) internal successors, (792), 6 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:18,624 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 132.0) internal successors, (792), 6 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:18,624 INFO L175 Difference]: Start difference. First operand has 118 places, 105 transitions, 268 flow. Second operand 5 states and 548 transitions. [2022-11-18 21:09:18,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 105 transitions, 303 flow [2022-11-18 21:09:18,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 105 transitions, 285 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-11-18 21:09:18,629 INFO L231 Difference]: Finished difference. Result has 114 places, 101 transitions, 251 flow [2022-11-18 21:09:18,629 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=251, PETRI_PLACES=114, PETRI_TRANSITIONS=101} [2022-11-18 21:09:18,632 INFO L288 CegarLoopForPetriNet]: 110 programPoint places, 4 predicate places. [2022-11-18 21:09:18,633 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 101 transitions, 251 flow [2022-11-18 21:09:18,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 108.4) internal successors, (542), 5 states have internal predecessors, (542), 0 states have call successors, (0), 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 21:09:18,633 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:09:18,634 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-18 21:09:18,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 21:09:18,634 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-18 21:09:18,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:09:18,635 INFO L85 PathProgramCache]: Analyzing trace with hash -362300240, now seen corresponding path program 1 times [2022-11-18 21:09:18,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:09:18,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845139360] [2022-11-18 21:09:18,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:09:18,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:09:18,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:09:18,784 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:09:18,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:09:18,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845139360] [2022-11-18 21:09:18,787 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845139360] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:09:18,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [363876611] [2022-11-18 21:09:18,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:09:18,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:09:18,794 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a10618f-975a-4892-ac1b-d1e82b432834/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:09:18,802 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a10618f-975a-4892-ac1b-d1e82b432834/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:09:18,810 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a10618f-975a-4892-ac1b-d1e82b432834/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 21:09:18,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:09:18,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 21:09:18,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:09:19,014 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:09:19,014 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:09:19,111 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:09:19,111 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [363876611] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 21:09:19,111 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 21:09:19,112 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-18 21:09:19,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682460903] [2022-11-18 21:09:19,112 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 21:09:19,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 21:09:19,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:09:19,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 21:09:19,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-18 21:09:19,115 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 132 [2022-11-18 21:09:19,117 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 101 transitions, 251 flow. Second operand has 12 states, 12 states have (on average 111.41666666666667) internal successors, (1337), 12 states have internal predecessors, (1337), 0 states have call successors, (0), 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 21:09:19,117 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:09:19,117 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 132 [2022-11-18 21:09:19,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:09:19,424 INFO L130 PetriNetUnfolder]: 53/331 cut-off events. [2022-11-18 21:09:19,425 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2022-11-18 21:09:19,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 624 conditions, 331 events. 53/331 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1308 event pairs, 2 based on Foata normal form. 6/314 useless extension candidates. Maximal degree in co-relation 616. Up to 42 conditions per place. [2022-11-18 21:09:19,428 INFO L137 encePairwiseOnDemand]: 123/132 looper letters, 41 selfloop transitions, 23 changer transitions 0/147 dead transitions. [2022-11-18 21:09:19,428 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 147 transitions, 537 flow [2022-11-18 21:09:19,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-18 21:09:19,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-18 21:09:19,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2029 transitions. [2022-11-18 21:09:19,433 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8539562289562289 [2022-11-18 21:09:19,433 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2029 transitions. [2022-11-18 21:09:19,434 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2029 transitions. [2022-11-18 21:09:19,435 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:09:19,435 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2029 transitions. [2022-11-18 21:09:19,440 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 112.72222222222223) internal successors, (2029), 18 states have internal predecessors, (2029), 0 states have call successors, (0), 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 21:09:19,445 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 132.0) internal successors, (2508), 19 states have internal predecessors, (2508), 0 states have call successors, (0), 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 21:09:19,446 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 132.0) internal successors, (2508), 19 states have internal predecessors, (2508), 0 states have call successors, (0), 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 21:09:19,447 INFO L175 Difference]: Start difference. First operand has 114 places, 101 transitions, 251 flow. Second operand 18 states and 2029 transitions. [2022-11-18 21:09:19,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 147 transitions, 537 flow [2022-11-18 21:09:19,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 147 transitions, 527 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 21:09:19,451 INFO L231 Difference]: Finished difference. Result has 128 places, 116 transitions, 377 flow [2022-11-18 21:09:19,451 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=241, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=377, PETRI_PLACES=128, PETRI_TRANSITIONS=116} [2022-11-18 21:09:19,452 INFO L288 CegarLoopForPetriNet]: 110 programPoint places, 18 predicate places. [2022-11-18 21:09:19,452 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 116 transitions, 377 flow [2022-11-18 21:09:19,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 111.41666666666667) internal successors, (1337), 12 states have internal predecessors, (1337), 0 states have call successors, (0), 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 21:09:19,453 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:09:19,453 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:09:19,465 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a10618f-975a-4892-ac1b-d1e82b432834/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 21:09:19,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a10618f-975a-4892-ac1b-d1e82b432834/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-18 21:09:19,660 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-18 21:09:19,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:09:19,661 INFO L85 PathProgramCache]: Analyzing trace with hash 1653594800, now seen corresponding path program 1 times [2022-11-18 21:09:19,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:09:19,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72805261] [2022-11-18 21:09:19,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:09:19,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:09:19,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:09:19,772 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:09:19,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:09:19,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72805261] [2022-11-18 21:09:19,773 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72805261] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:09:19,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1174373465] [2022-11-18 21:09:19,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:09:19,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:09:19,774 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a10618f-975a-4892-ac1b-d1e82b432834/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:09:19,775 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a10618f-975a-4892-ac1b-d1e82b432834/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:09:19,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a10618f-975a-4892-ac1b-d1e82b432834/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 21:09:19,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:09:19,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 21:09:19,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:09:19,963 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:09:19,963 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:09:19,964 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1174373465] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:09:19,964 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 21:09:19,964 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-18 21:09:19,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418312591] [2022-11-18 21:09:19,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:09:19,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 21:09:19,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:09:19,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 21:09:19,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 21:09:19,968 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 132 [2022-11-18 21:09:19,969 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 116 transitions, 377 flow. Second operand has 6 states, 6 states have (on average 111.33333333333333) internal successors, (668), 6 states have internal predecessors, (668), 0 states have call successors, (0), 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 21:09:19,969 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:09:19,969 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 132 [2022-11-18 21:09:19,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:09:20,117 INFO L130 PetriNetUnfolder]: 49/329 cut-off events. [2022-11-18 21:09:20,118 INFO L131 PetriNetUnfolder]: For 166/166 co-relation queries the response was YES. [2022-11-18 21:09:20,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 665 conditions, 329 events. 49/329 cut-off events. For 166/166 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1234 event pairs, 2 based on Foata normal form. 8/312 useless extension candidates. Maximal degree in co-relation 654. Up to 50 conditions per place. [2022-11-18 21:09:20,121 INFO L137 encePairwiseOnDemand]: 125/132 looper letters, 22 selfloop transitions, 17 changer transitions 0/122 dead transitions. [2022-11-18 21:09:20,122 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 122 transitions, 467 flow [2022-11-18 21:09:20,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 21:09:20,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 21:09:20,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 791 transitions. [2022-11-18 21:09:20,125 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8560606060606061 [2022-11-18 21:09:20,125 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 791 transitions. [2022-11-18 21:09:20,125 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 791 transitions. [2022-11-18 21:09:20,126 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:09:20,126 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 791 transitions. [2022-11-18 21:09:20,129 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 113.0) internal successors, (791), 7 states have internal predecessors, (791), 0 states have call successors, (0), 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 21:09:20,130 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 132.0) internal successors, (1056), 8 states have internal predecessors, (1056), 0 states have call successors, (0), 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 21:09:20,131 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 132.0) internal successors, (1056), 8 states have internal predecessors, (1056), 0 states have call successors, (0), 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 21:09:20,131 INFO L175 Difference]: Start difference. First operand has 128 places, 116 transitions, 377 flow. Second operand 7 states and 791 transitions. [2022-11-18 21:09:20,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 122 transitions, 467 flow [2022-11-18 21:09:20,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 122 transitions, 415 flow, removed 11 selfloop flow, removed 6 redundant places. [2022-11-18 21:09:20,139 INFO L231 Difference]: Finished difference. Result has 123 places, 113 transitions, 341 flow [2022-11-18 21:09:20,140 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=301, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=341, PETRI_PLACES=123, PETRI_TRANSITIONS=113} [2022-11-18 21:09:20,142 INFO L288 CegarLoopForPetriNet]: 110 programPoint places, 13 predicate places. [2022-11-18 21:09:20,142 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 113 transitions, 341 flow [2022-11-18 21:09:20,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 111.33333333333333) internal successors, (668), 6 states have internal predecessors, (668), 0 states have call successors, (0), 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 21:09:20,143 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:09:20,143 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:09:20,153 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a10618f-975a-4892-ac1b-d1e82b432834/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 21:09:20,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a10618f-975a-4892-ac1b-d1e82b432834/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:09:20,349 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-18 21:09:20,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:09:20,349 INFO L85 PathProgramCache]: Analyzing trace with hash 273875577, now seen corresponding path program 2 times [2022-11-18 21:09:20,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:09:20,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220181792] [2022-11-18 21:09:20,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:09:20,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:09:20,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:09:20,608 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:09:20,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:09:20,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220181792] [2022-11-18 21:09:20,609 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220181792] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:09:20,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1423360705] [2022-11-18 21:09:20,614 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 21:09:20,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:09:20,614 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a10618f-975a-4892-ac1b-d1e82b432834/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:09:20,615 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a10618f-975a-4892-ac1b-d1e82b432834/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:09:20,637 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a10618f-975a-4892-ac1b-d1e82b432834/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 21:09:20,697 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 21:09:20,697 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 21:09:20,698 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 21:09:20,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:09:20,888 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-18 21:09:20,888 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:09:21,066 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-18 21:09:21,066 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1423360705] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 21:09:21,067 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 21:09:21,067 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5, 5] total 15 [2022-11-18 21:09:21,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370952271] [2022-11-18 21:09:21,067 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 21:09:21,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-18 21:09:21,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:09:21,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-18 21:09:21,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2022-11-18 21:09:21,070 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 132 [2022-11-18 21:09:21,072 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 113 transitions, 341 flow. Second operand has 16 states, 16 states have (on average 105.3125) internal successors, (1685), 16 states have internal predecessors, (1685), 0 states have call successors, (0), 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 21:09:21,073 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:09:21,073 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 132 [2022-11-18 21:09:21,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:09:21,532 INFO L130 PetriNetUnfolder]: 113/566 cut-off events. [2022-11-18 21:09:21,533 INFO L131 PetriNetUnfolder]: For 217/217 co-relation queries the response was YES. [2022-11-18 21:09:21,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1134 conditions, 566 events. 113/566 cut-off events. For 217/217 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 2481 event pairs, 4 based on Foata normal form. 6/526 useless extension candidates. Maximal degree in co-relation 1125. Up to 46 conditions per place. [2022-11-18 21:09:21,535 INFO L137 encePairwiseOnDemand]: 121/132 looper letters, 0 selfloop transitions, 0 changer transitions 175/175 dead transitions. [2022-11-18 21:09:21,535 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 175 transitions, 728 flow [2022-11-18 21:09:21,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-18 21:09:21,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-11-18 21:09:21,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 2446 transitions. [2022-11-18 21:09:21,541 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.80566534914361 [2022-11-18 21:09:21,541 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 2446 transitions. [2022-11-18 21:09:21,541 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 2446 transitions. [2022-11-18 21:09:21,543 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:09:21,543 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 2446 transitions. [2022-11-18 21:09:21,549 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 106.34782608695652) internal successors, (2446), 23 states have internal predecessors, (2446), 0 states have call successors, (0), 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 21:09:21,554 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 132.0) internal successors, (3168), 24 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:21,556 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 132.0) internal successors, (3168), 24 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:09:21,556 INFO L175 Difference]: Start difference. First operand has 123 places, 113 transitions, 341 flow. Second operand 23 states and 2446 transitions. [2022-11-18 21:09:21,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 175 transitions, 728 flow [2022-11-18 21:09:21,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 175 transitions, 696 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-11-18 21:09:21,560 INFO L231 Difference]: Finished difference. Result has 136 places, 0 transitions, 0 flow [2022-11-18 21:09:21,560 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=0, PETRI_PLACES=136, PETRI_TRANSITIONS=0} [2022-11-18 21:09:21,561 INFO L288 CegarLoopForPetriNet]: 110 programPoint places, 26 predicate places. [2022-11-18 21:09:21,561 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 0 transitions, 0 flow [2022-11-18 21:09:21,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 105.3125) internal successors, (1685), 16 states have internal predecessors, (1685), 0 states have call successors, (0), 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 21:09:21,564 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 14 remaining) [2022-11-18 21:09:21,565 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 14 remaining) [2022-11-18 21:09:21,565 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 14 remaining) [2022-11-18 21:09:21,565 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 14 remaining) [2022-11-18 21:09:21,565 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 14 remaining) [2022-11-18 21:09:21,566 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 14 remaining) [2022-11-18 21:09:21,566 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 14 remaining) [2022-11-18 21:09:21,566 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 14 remaining) [2022-11-18 21:09:21,566 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 14 remaining) [2022-11-18 21:09:21,566 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 14 remaining) [2022-11-18 21:09:21,567 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 14 remaining) [2022-11-18 21:09:21,567 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 14 remaining) [2022-11-18 21:09:21,567 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 14 remaining) [2022-11-18 21:09:21,567 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 14 remaining) [2022-11-18 21:09:21,574 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a10618f-975a-4892-ac1b-d1e82b432834/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 21:09:21,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a10618f-975a-4892-ac1b-d1e82b432834/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:09:21,774 INFO L444 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:09:21,778 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-18 21:09:21,778 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-18 21:09:21,783 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 09:09:21 BasicIcfg [2022-11-18 21:09:21,783 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-18 21:09:21,783 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-18 21:09:21,784 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-18 21:09:21,784 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-18 21:09:21,784 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:09:16" (3/4) ... [2022-11-18 21:09:21,787 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-18 21:09:21,793 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-11-18 21:09:21,793 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-11-18 21:09:21,798 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2022-11-18 21:09:21,799 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-18 21:09:21,799 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-18 21:09:21,799 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-18 21:09:21,844 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a10618f-975a-4892-ac1b-d1e82b432834/bin/uautomizer-TMbwUNV5ro/witness.graphml [2022-11-18 21:09:21,845 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-18 21:09:21,845 INFO L158 Benchmark]: Toolchain (without parser) took 6814.91ms. Allocated memory was 102.8MB in the beginning and 159.4MB in the end (delta: 56.6MB). Free memory was 62.4MB in the beginning and 52.9MB in the end (delta: 9.4MB). Peak memory consumption was 64.0MB. Max. memory is 16.1GB. [2022-11-18 21:09:21,846 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 102.8MB. Free memory is still 79.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 21:09:21,846 INFO L158 Benchmark]: CACSL2BoogieTranslator took 383.95ms. Allocated memory is still 102.8MB. Free memory was 62.2MB in the beginning and 77.2MB in the end (delta: -15.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-18 21:09:21,846 INFO L158 Benchmark]: Boogie Procedure Inliner took 56.17ms. Allocated memory is still 102.8MB. Free memory was 77.2MB in the beginning and 75.7MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 21:09:21,846 INFO L158 Benchmark]: Boogie Preprocessor took 40.87ms. Allocated memory is still 102.8MB. Free memory was 75.7MB in the beginning and 74.2MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-18 21:09:21,847 INFO L158 Benchmark]: RCFGBuilder took 606.28ms. Allocated memory is still 102.8MB. Free memory was 74.2MB in the beginning and 59.9MB in the end (delta: 14.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-18 21:09:21,847 INFO L158 Benchmark]: TraceAbstraction took 5656.93ms. Allocated memory was 102.8MB in the beginning and 159.4MB in the end (delta: 56.6MB). Free memory was 59.0MB in the beginning and 55.7MB in the end (delta: 3.3MB). Peak memory consumption was 62.3MB. Max. memory is 16.1GB. [2022-11-18 21:09:21,848 INFO L158 Benchmark]: Witness Printer took 61.26ms. Allocated memory is still 159.4MB. Free memory was 55.7MB in the beginning and 52.9MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-18 21:09:21,849 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 102.8MB. Free memory is still 79.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 383.95ms. Allocated memory is still 102.8MB. Free memory was 62.2MB in the beginning and 77.2MB in the end (delta: -15.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 56.17ms. Allocated memory is still 102.8MB. Free memory was 77.2MB in the beginning and 75.7MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 40.87ms. Allocated memory is still 102.8MB. Free memory was 75.7MB in the beginning and 74.2MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 606.28ms. Allocated memory is still 102.8MB. Free memory was 74.2MB in the beginning and 59.9MB in the end (delta: 14.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 5656.93ms. Allocated memory was 102.8MB in the beginning and 159.4MB in the end (delta: 56.6MB). Free memory was 59.0MB in the beginning and 55.7MB in the end (delta: 3.3MB). Peak memory consumption was 62.3MB. Max. memory is 16.1GB. * Witness Printer took 61.26ms. Allocated memory is still 159.4MB. Free memory was 55.7MB in the beginning and 52.9MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 44]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 44]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 41]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 41]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 53]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 53]: 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, 161 locations, 14 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: 5.5s, OverallIterations: 9, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 384 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 384 mSDsluCounter, 171 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 116 mSDsCounter, 33 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 519 IncrementalHoareTripleChecker+Invalid, 552 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 33 mSolverCounterUnsat, 55 mSDtfsCounter, 519 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 507 GetRequests, 413 SyntacticMatches, 3 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 348 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=377occurred in iteration=7, InterpolantAutomatonStates: 81, 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: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 875 NumberOfCodeBlocks, 839 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 1034 ConstructedInterpolants, 0 QuantifiedInterpolants, 2030 SizeOfPredicates, 10 NumberOfNonLiveVariables, 432 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 14 InterpolantComputations, 7 PerfectInterpolantSequences, 123/266 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 6 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-18 21:09:21,872 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a10618f-975a-4892-ac1b-d1e82b432834/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