./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-more-min-array-hom.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586ad701-7f9e-47ad-8408-2d226619e99b/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586ad701-7f9e-47ad-8408-2d226619e99b/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586ad701-7f9e-47ad-8408-2d226619e99b/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586ad701-7f9e-47ad-8408-2d226619e99b/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-min-array-hom.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586ad701-7f9e-47ad-8408-2d226619e99b/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586ad701-7f9e-47ad-8408-2d226619e99b/bin/uautomizer-ug76WZFUDN --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 ceb4cfb737a49cea9ea1be451c16ebb29f48ae611a8c94fc546ca2e3471f0eb3 --- 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-6b4ec56 [2022-11-20 11:24:40,386 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:24:40,390 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:24:40,425 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:24:40,426 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:24:40,427 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:24:40,429 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:24:40,431 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:24:40,434 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:24:40,435 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:24:40,437 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:24:40,438 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:24:40,439 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:24:40,440 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:24:40,442 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:24:40,443 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:24:40,445 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:24:40,446 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:24:40,449 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:24:40,451 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:24:40,453 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:24:40,455 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:24:40,457 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:24:40,458 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:24:40,463 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:24:40,464 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:24:40,465 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:24:40,466 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:24:40,467 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:24:40,468 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:24:40,469 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:24:40,470 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:24:40,471 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:24:40,472 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:24:40,474 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:24:40,475 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:24:40,476 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:24:40,476 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:24:40,477 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:24:40,478 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:24:40,479 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:24:40,480 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586ad701-7f9e-47ad-8408-2d226619e99b/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-20 11:24:40,512 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:24:40,513 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:24:40,513 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:24:40,513 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:24:40,514 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 11:24:40,515 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 11:24:40,516 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:24:40,516 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:24:40,516 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:24:40,517 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:24:40,517 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 11:24:40,518 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 11:24:40,518 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 11:24:40,518 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 11:24:40,518 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:24:40,519 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 11:24:40,519 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 11:24:40,519 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 11:24:40,520 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-20 11:24:40,520 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 11:24:40,520 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 11:24:40,520 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:24:40,521 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 11:24:40,521 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:24:40,521 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:24:40,522 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 11:24:40,522 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:24:40,522 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:24:40,522 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 11:24:40,523 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 11:24:40,523 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 11:24:40,523 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 11:24:40,524 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 11:24:40,524 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 11:24:40,524 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 11:24:40,524 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_586ad701-7f9e-47ad-8408-2d226619e99b/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586ad701-7f9e-47ad-8408-2d226619e99b/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ceb4cfb737a49cea9ea1be451c16ebb29f48ae611a8c94fc546ca2e3471f0eb3 [2022-11-20 11:24:40,870 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:24:40,920 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:24:40,923 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:24:40,925 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:24:40,926 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:24:40,928 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586ad701-7f9e-47ad-8408-2d226619e99b/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/weaver/popl20-more-min-array-hom.wvr.c [2022-11-20 11:24:44,796 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:24:45,066 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:24:45,067 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586ad701-7f9e-47ad-8408-2d226619e99b/sv-benchmarks/c/weaver/popl20-more-min-array-hom.wvr.c [2022-11-20 11:24:45,079 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586ad701-7f9e-47ad-8408-2d226619e99b/bin/uautomizer-ug76WZFUDN/data/8235e28ed/f4078c7d692547149b7f9567254b724c/FLAGed5f2255c [2022-11-20 11:24:45,104 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586ad701-7f9e-47ad-8408-2d226619e99b/bin/uautomizer-ug76WZFUDN/data/8235e28ed/f4078c7d692547149b7f9567254b724c [2022-11-20 11:24:45,111 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:24:45,113 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:24:45,116 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:24:45,117 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:24:45,121 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:24:45,122 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:24:45" (1/1) ... [2022-11-20 11:24:45,124 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b507989 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:24:45, skipping insertion in model container [2022-11-20 11:24:45,124 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:24:45" (1/1) ... [2022-11-20 11:24:45,133 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:24:45,163 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:24:45,377 WARN L237 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_586ad701-7f9e-47ad-8408-2d226619e99b/sv-benchmarks/c/weaver/popl20-more-min-array-hom.wvr.c[2586,2599] [2022-11-20 11:24:45,385 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:24:45,401 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 11:24:45,429 WARN L237 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_586ad701-7f9e-47ad-8408-2d226619e99b/sv-benchmarks/c/weaver/popl20-more-min-array-hom.wvr.c[2586,2599] [2022-11-20 11:24:45,436 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:24:45,458 INFO L208 MainTranslator]: Completed translation [2022-11-20 11:24:45,459 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:24:45 WrapperNode [2022-11-20 11:24:45,459 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 11:24:45,461 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 11:24:45,461 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 11:24:45,461 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 11:24:45,471 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:24:45" (1/1) ... [2022-11-20 11:24:45,482 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:24:45" (1/1) ... [2022-11-20 11:24:45,515 INFO L138 Inliner]: procedures = 24, calls = 43, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 104 [2022-11-20 11:24:45,523 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 11:24:45,524 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 11:24:45,525 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 11:24:45,526 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 11:24:45,535 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:24:45" (1/1) ... [2022-11-20 11:24:45,535 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:24:45" (1/1) ... [2022-11-20 11:24:45,551 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:24:45" (1/1) ... [2022-11-20 11:24:45,551 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:24:45" (1/1) ... [2022-11-20 11:24:45,560 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:24:45" (1/1) ... [2022-11-20 11:24:45,578 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:24:45" (1/1) ... [2022-11-20 11:24:45,580 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:24:45" (1/1) ... [2022-11-20 11:24:45,582 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:24:45" (1/1) ... [2022-11-20 11:24:45,585 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 11:24:45,587 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 11:24:45,587 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 11:24:45,587 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 11:24:45,588 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:24:45" (1/1) ... [2022-11-20 11:24:45,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:24:45,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586ad701-7f9e-47ad-8408-2d226619e99b/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:24:45,632 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586ad701-7f9e-47ad-8408-2d226619e99b/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 11:24:45,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586ad701-7f9e-47ad-8408-2d226619e99b/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 11:24:45,678 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 11:24:45,678 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-20 11:24:45,679 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-20 11:24:45,679 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-20 11:24:45,679 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-20 11:24:45,679 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-20 11:24:45,679 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-20 11:24:45,679 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 11:24:45,680 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 11:24:45,680 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 11:24:45,680 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-20 11:24:45,680 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-20 11:24:45,680 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 11:24:45,680 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 11:24:45,681 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 11:24:45,681 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 11:24:45,681 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 11:24:45,683 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 11:24:45,879 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 11:24:45,882 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 11:24:46,440 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 11:24:46,572 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 11:24:46,573 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-20 11:24:46,577 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:24:46 BoogieIcfgContainer [2022-11-20 11:24:46,577 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 11:24:46,581 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 11:24:46,581 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 11:24:46,585 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 11:24:46,585 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:24:45" (1/3) ... [2022-11-20 11:24:46,586 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@102f74e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:24:46, skipping insertion in model container [2022-11-20 11:24:46,586 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:24:45" (2/3) ... [2022-11-20 11:24:46,587 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@102f74e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:24:46, skipping insertion in model container [2022-11-20 11:24:46,587 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:24:46" (3/3) ... [2022-11-20 11:24:46,589 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-min-array-hom.wvr.c [2022-11-20 11:24:46,601 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 11:24:46,615 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 11:24:46,616 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-11-20 11:24:46,616 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 11:24:46,799 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-20 11:24:46,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 167 places, 169 transitions, 362 flow [2022-11-20 11:24:47,144 INFO L130 PetriNetUnfolder]: 12/166 cut-off events. [2022-11-20 11:24:47,145 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-20 11:24:47,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 179 conditions, 166 events. 12/166 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 132 event pairs, 0 based on Foata normal form. 0/146 useless extension candidates. Maximal degree in co-relation 125. Up to 2 conditions per place. [2022-11-20 11:24:47,154 INFO L82 GeneralOperation]: Start removeDead. Operand has 167 places, 169 transitions, 362 flow [2022-11-20 11:24:47,170 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 144 places, 145 transitions, 305 flow [2022-11-20 11:24:47,194 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:24:47,206 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;@9f3905a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:24:47,207 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2022-11-20 11:24:47,255 INFO L130 PetriNetUnfolder]: 3/64 cut-off events. [2022-11-20 11:24:47,255 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 11:24:47,256 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:24:47,257 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] [2022-11-20 11:24:47,259 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-20 11:24:47,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:24:47,268 INFO L85 PathProgramCache]: Analyzing trace with hash 1292207454, now seen corresponding path program 1 times [2022-11-20 11:24:47,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:24:47,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565114721] [2022-11-20 11:24:47,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:24:47,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:24:47,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:24:47,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:24:47,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:24:47,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565114721] [2022-11-20 11:24:47,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565114721] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:24:47,850 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:24:47,850 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:24:47,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480400030] [2022-11-20 11:24:47,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:24:47,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:24:47,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:24:47,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:24:47,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:24:47,923 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 169 [2022-11-20 11:24:47,932 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 145 transitions, 305 flow. Second operand has 4 states, 4 states have (on average 140.5) internal successors, (562), 4 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:24:47,936 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:24:47,937 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 169 [2022-11-20 11:24:47,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:24:48,273 INFO L130 PetriNetUnfolder]: 79/584 cut-off events. [2022-11-20 11:24:48,273 INFO L131 PetriNetUnfolder]: For 86/88 co-relation queries the response was YES. [2022-11-20 11:24:48,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 773 conditions, 584 events. 79/584 cut-off events. For 86/88 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 2905 event pairs, 30 based on Foata normal form. 72/536 useless extension candidates. Maximal degree in co-relation 286. Up to 69 conditions per place. [2022-11-20 11:24:48,291 INFO L137 encePairwiseOnDemand]: 156/169 looper letters, 32 selfloop transitions, 4 changer transitions 3/154 dead transitions. [2022-11-20 11:24:48,291 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 154 transitions, 410 flow [2022-11-20 11:24:48,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:24:48,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 11:24:48,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 745 transitions. [2022-11-20 11:24:48,326 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8816568047337278 [2022-11-20 11:24:48,327 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 745 transitions. [2022-11-20 11:24:48,328 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 745 transitions. [2022-11-20 11:24:48,333 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:24:48,337 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 745 transitions. [2022-11-20 11:24:48,345 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 149.0) internal successors, (745), 5 states have internal predecessors, (745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:24:48,357 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 169.0) internal successors, (1014), 6 states have internal predecessors, (1014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:24:48,358 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 169.0) internal successors, (1014), 6 states have internal predecessors, (1014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:24:48,361 INFO L175 Difference]: Start difference. First operand has 144 places, 145 transitions, 305 flow. Second operand 5 states and 745 transitions. [2022-11-20 11:24:48,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 154 transitions, 410 flow [2022-11-20 11:24:48,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 154 transitions, 392 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-20 11:24:48,374 INFO L231 Difference]: Finished difference. Result has 146 places, 138 transitions, 306 flow [2022-11-20 11:24:48,377 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=306, PETRI_PLACES=146, PETRI_TRANSITIONS=138} [2022-11-20 11:24:48,386 INFO L288 CegarLoopForPetriNet]: 144 programPoint places, 2 predicate places. [2022-11-20 11:24:48,386 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 138 transitions, 306 flow [2022-11-20 11:24:48,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 140.5) internal successors, (562), 4 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:24:48,388 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:24:48,389 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] [2022-11-20 11:24:48,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 11:24:48,390 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-20 11:24:48,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:24:48,391 INFO L85 PathProgramCache]: Analyzing trace with hash 409741581, now seen corresponding path program 1 times [2022-11-20 11:24:48,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:24:48,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914922857] [2022-11-20 11:24:48,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:24:48,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:24:48,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:24:48,740 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:24:48,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:24:48,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914922857] [2022-11-20 11:24:48,741 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914922857] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:24:48,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [968468129] [2022-11-20 11:24:48,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:24:48,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:24:48,743 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586ad701-7f9e-47ad-8408-2d226619e99b/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:24:48,747 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586ad701-7f9e-47ad-8408-2d226619e99b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:24:48,757 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586ad701-7f9e-47ad-8408-2d226619e99b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 11:24:48,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:24:48,877 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 11:24:48,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:24:48,990 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:24:48,991 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:24:49,075 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:24:49,081 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [968468129] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:24:49,081 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:24:49,087 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-20 11:24:49,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796236671] [2022-11-20 11:24:49,089 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:24:49,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 11:24:49,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:24:49,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 11:24:49,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-20 11:24:49,099 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 169 [2022-11-20 11:24:49,103 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 138 transitions, 306 flow. Second operand has 12 states, 12 states have (on average 141.66666666666666) internal successors, (1700), 12 states have internal predecessors, (1700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:24:49,103 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:24:49,104 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 169 [2022-11-20 11:24:49,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:24:49,916 INFO L130 PetriNetUnfolder]: 196/1377 cut-off events. [2022-11-20 11:24:49,917 INFO L131 PetriNetUnfolder]: For 71/76 co-relation queries the response was YES. [2022-11-20 11:24:49,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1787 conditions, 1377 events. 196/1377 cut-off events. For 71/76 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 9113 event pairs, 75 based on Foata normal form. 3/1095 useless extension candidates. Maximal degree in co-relation 1384. Up to 70 conditions per place. [2022-11-20 11:24:49,935 INFO L137 encePairwiseOnDemand]: 162/169 looper letters, 68 selfloop transitions, 18 changer transitions 0/201 dead transitions. [2022-11-20 11:24:49,935 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 201 transitions, 650 flow [2022-11-20 11:24:49,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-20 11:24:49,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-20 11:24:49,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2591 transitions. [2022-11-20 11:24:49,944 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8517422748191978 [2022-11-20 11:24:49,944 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2591 transitions. [2022-11-20 11:24:49,944 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2591 transitions. [2022-11-20 11:24:49,946 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:24:49,947 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2591 transitions. [2022-11-20 11:24:49,955 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 143.94444444444446) internal successors, (2591), 18 states have internal predecessors, (2591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:24:49,962 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 169.0) internal successors, (3211), 19 states have internal predecessors, (3211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:24:49,965 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 169.0) internal successors, (3211), 19 states have internal predecessors, (3211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:24:49,966 INFO L175 Difference]: Start difference. First operand has 146 places, 138 transitions, 306 flow. Second operand 18 states and 2591 transitions. [2022-11-20 11:24:49,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 201 transitions, 650 flow [2022-11-20 11:24:49,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 201 transitions, 648 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 11:24:49,977 INFO L231 Difference]: Finished difference. Result has 163 places, 150 transitions, 410 flow [2022-11-20 11:24:49,977 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=410, PETRI_PLACES=163, PETRI_TRANSITIONS=150} [2022-11-20 11:24:49,978 INFO L288 CegarLoopForPetriNet]: 144 programPoint places, 19 predicate places. [2022-11-20 11:24:49,979 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 150 transitions, 410 flow [2022-11-20 11:24:49,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 141.66666666666666) internal successors, (1700), 12 states have internal predecessors, (1700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:24:49,980 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:24:49,981 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] [2022-11-20 11:24:49,996 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586ad701-7f9e-47ad-8408-2d226619e99b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 11:24:50,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586ad701-7f9e-47ad-8408-2d226619e99b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:24:50,190 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-20 11:24:50,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:24:50,191 INFO L85 PathProgramCache]: Analyzing trace with hash -182912557, now seen corresponding path program 1 times [2022-11-20 11:24:50,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:24:50,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636423284] [2022-11-20 11:24:50,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:24:50,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:24:50,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:24:50,440 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:24:50,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:24:50,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636423284] [2022-11-20 11:24:50,442 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636423284] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:24:50,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [16719370] [2022-11-20 11:24:50,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:24:50,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:24:50,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586ad701-7f9e-47ad-8408-2d226619e99b/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:24:50,445 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586ad701-7f9e-47ad-8408-2d226619e99b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:24:50,483 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586ad701-7f9e-47ad-8408-2d226619e99b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 11:24:50,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:24:50,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 11:24:50,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:24:50,673 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:24:50,674 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:24:50,674 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [16719370] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:24:50,675 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:24:50,675 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-20 11:24:50,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005540789] [2022-11-20 11:24:50,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:24:50,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:24:50,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:24:50,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:24:50,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:24:50,684 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 169 [2022-11-20 11:24:50,685 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 150 transitions, 410 flow. Second operand has 6 states, 6 states have (on average 141.33333333333334) internal successors, (848), 6 states have internal predecessors, (848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:24:50,686 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:24:50,686 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 169 [2022-11-20 11:24:50,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:24:51,152 INFO L130 PetriNetUnfolder]: 196/1373 cut-off events. [2022-11-20 11:24:51,152 INFO L131 PetriNetUnfolder]: For 107/112 co-relation queries the response was YES. [2022-11-20 11:24:51,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1805 conditions, 1373 events. 196/1373 cut-off events. For 107/112 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 9044 event pairs, 75 based on Foata normal form. 4/1092 useless extension candidates. Maximal degree in co-relation 1428. Up to 240 conditions per place. [2022-11-20 11:24:51,166 INFO L137 encePairwiseOnDemand]: 164/169 looper letters, 33 selfloop transitions, 11 changer transitions 0/159 dead transitions. [2022-11-20 11:24:51,166 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 159 transitions, 505 flow [2022-11-20 11:24:51,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:24:51,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 11:24:51,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1009 transitions. [2022-11-20 11:24:51,170 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.852916314454776 [2022-11-20 11:24:51,171 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1009 transitions. [2022-11-20 11:24:51,171 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1009 transitions. [2022-11-20 11:24:51,172 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:24:51,172 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1009 transitions. [2022-11-20 11:24:51,175 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 144.14285714285714) internal successors, (1009), 7 states have internal predecessors, (1009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:24:51,178 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 169.0) internal successors, (1352), 8 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:24:51,179 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 169.0) internal successors, (1352), 8 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:24:51,180 INFO L175 Difference]: Start difference. First operand has 163 places, 150 transitions, 410 flow. Second operand 7 states and 1009 transitions. [2022-11-20 11:24:51,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 159 transitions, 505 flow [2022-11-20 11:24:51,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 159 transitions, 473 flow, removed 11 selfloop flow, removed 5 redundant places. [2022-11-20 11:24:51,192 INFO L231 Difference]: Finished difference. Result has 159 places, 146 transitions, 373 flow [2022-11-20 11:24:51,193 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=351, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=373, PETRI_PLACES=159, PETRI_TRANSITIONS=146} [2022-11-20 11:24:51,199 INFO L288 CegarLoopForPetriNet]: 144 programPoint places, 15 predicate places. [2022-11-20 11:24:51,200 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 146 transitions, 373 flow [2022-11-20 11:24:51,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 141.33333333333334) internal successors, (848), 6 states have internal predecessors, (848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:24:51,201 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:24:51,201 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:24:51,214 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586ad701-7f9e-47ad-8408-2d226619e99b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 11:24:51,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586ad701-7f9e-47ad-8408-2d226619e99b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:24:51,408 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-20 11:24:51,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:24:51,409 INFO L85 PathProgramCache]: Analyzing trace with hash -942841033, now seen corresponding path program 1 times [2022-11-20 11:24:51,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:24:51,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93869223] [2022-11-20 11:24:51,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:24:51,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:24:51,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:24:51,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:24:51,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:24:51,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93869223] [2022-11-20 11:24:51,566 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93869223] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:24:51,566 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:24:51,567 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:24:51,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701607082] [2022-11-20 11:24:51,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:24:51,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:24:51,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:24:51,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:24:51,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:24:51,580 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 169 [2022-11-20 11:24:51,581 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 146 transitions, 373 flow. Second operand has 4 states, 4 states have (on average 142.5) internal successors, (570), 4 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:24:51,581 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:24:51,581 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 169 [2022-11-20 11:24:51,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:24:52,773 INFO L130 PetriNetUnfolder]: 1201/4528 cut-off events. [2022-11-20 11:24:52,773 INFO L131 PetriNetUnfolder]: For 102/132 co-relation queries the response was YES. [2022-11-20 11:24:52,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6892 conditions, 4528 events. 1201/4528 cut-off events. For 102/132 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 40986 event pairs, 515 based on Foata normal form. 5/3638 useless extension candidates. Maximal degree in co-relation 5504. Up to 1081 conditions per place. [2022-11-20 11:24:52,823 INFO L137 encePairwiseOnDemand]: 163/169 looper letters, 36 selfloop transitions, 4 changer transitions 0/168 dead transitions. [2022-11-20 11:24:52,823 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 168 transitions, 508 flow [2022-11-20 11:24:52,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:24:52,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 11:24:52,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 747 transitions. [2022-11-20 11:24:52,827 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8840236686390532 [2022-11-20 11:24:52,827 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 747 transitions. [2022-11-20 11:24:52,828 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 747 transitions. [2022-11-20 11:24:52,828 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:24:52,829 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 747 transitions. [2022-11-20 11:24:52,831 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 149.4) internal successors, (747), 5 states have internal predecessors, (747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:24:52,833 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 169.0) internal successors, (1014), 6 states have internal predecessors, (1014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:24:52,834 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 169.0) internal successors, (1014), 6 states have internal predecessors, (1014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:24:52,834 INFO L175 Difference]: Start difference. First operand has 159 places, 146 transitions, 373 flow. Second operand 5 states and 747 transitions. [2022-11-20 11:24:52,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 168 transitions, 508 flow [2022-11-20 11:24:52,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 168 transitions, 494 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-20 11:24:52,843 INFO L231 Difference]: Finished difference. Result has 161 places, 149 transitions, 389 flow [2022-11-20 11:24:52,843 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=359, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=389, PETRI_PLACES=161, PETRI_TRANSITIONS=149} [2022-11-20 11:24:52,845 INFO L288 CegarLoopForPetriNet]: 144 programPoint places, 17 predicate places. [2022-11-20 11:24:52,845 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 149 transitions, 389 flow [2022-11-20 11:24:52,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 142.5) internal successors, (570), 4 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:24:52,846 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:24:52,847 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:24:52,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 11:24:52,847 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-20 11:24:52,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:24:52,848 INFO L85 PathProgramCache]: Analyzing trace with hash 1503184433, now seen corresponding path program 1 times [2022-11-20 11:24:52,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:24:52,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904862683] [2022-11-20 11:24:52,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:24:52,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:24:52,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:24:53,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:24:53,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:24:53,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904862683] [2022-11-20 11:24:53,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904862683] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:24:53,004 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:24:53,004 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:24:53,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271953854] [2022-11-20 11:24:53,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:24:53,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:24:53,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:24:53,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:24:53,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:24:53,008 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 169 [2022-11-20 11:24:53,009 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 149 transitions, 389 flow. Second operand has 4 states, 4 states have (on average 142.75) internal successors, (571), 4 states have internal predecessors, (571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:24:53,009 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:24:53,009 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 169 [2022-11-20 11:24:53,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:24:54,542 INFO L130 PetriNetUnfolder]: 2181/6393 cut-off events. [2022-11-20 11:24:54,543 INFO L131 PetriNetUnfolder]: For 482/487 co-relation queries the response was YES. [2022-11-20 11:24:54,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10643 conditions, 6393 events. 2181/6393 cut-off events. For 482/487 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 62157 event pairs, 1095 based on Foata normal form. 0/5318 useless extension candidates. Maximal degree in co-relation 8503. Up to 2031 conditions per place. [2022-11-20 11:24:54,707 INFO L137 encePairwiseOnDemand]: 163/169 looper letters, 35 selfloop transitions, 4 changer transitions 0/170 dead transitions. [2022-11-20 11:24:54,707 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 170 transitions, 519 flow [2022-11-20 11:24:54,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:24:54,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 11:24:54,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 746 transitions. [2022-11-20 11:24:54,711 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8828402366863906 [2022-11-20 11:24:54,711 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 746 transitions. [2022-11-20 11:24:54,711 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 746 transitions. [2022-11-20 11:24:54,712 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:24:54,712 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 746 transitions. [2022-11-20 11:24:54,714 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 149.2) internal successors, (746), 5 states have internal predecessors, (746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:24:54,717 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 169.0) internal successors, (1014), 6 states have internal predecessors, (1014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:24:54,717 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 169.0) internal successors, (1014), 6 states have internal predecessors, (1014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:24:54,718 INFO L175 Difference]: Start difference. First operand has 161 places, 149 transitions, 389 flow. Second operand 5 states and 746 transitions. [2022-11-20 11:24:54,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 170 transitions, 519 flow [2022-11-20 11:24:54,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 170 transitions, 517 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 11:24:54,725 INFO L231 Difference]: Finished difference. Result has 167 places, 152 transitions, 417 flow [2022-11-20 11:24:54,726 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=387, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=417, PETRI_PLACES=167, PETRI_TRANSITIONS=152} [2022-11-20 11:24:54,729 INFO L288 CegarLoopForPetriNet]: 144 programPoint places, 23 predicate places. [2022-11-20 11:24:54,729 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 152 transitions, 417 flow [2022-11-20 11:24:54,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 142.75) internal successors, (571), 4 states have internal predecessors, (571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:24:54,730 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:24:54,730 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:24:54,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 11:24:54,731 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-20 11:24:54,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:24:54,732 INFO L85 PathProgramCache]: Analyzing trace with hash -1702804560, now seen corresponding path program 1 times [2022-11-20 11:24:54,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:24:54,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445910852] [2022-11-20 11:24:54,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:24:54,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:24:54,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:24:54,886 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:24:54,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:24:54,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445910852] [2022-11-20 11:24:54,887 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445910852] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:24:54,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2033357538] [2022-11-20 11:24:54,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:24:54,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:24:54,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586ad701-7f9e-47ad-8408-2d226619e99b/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:24:54,894 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586ad701-7f9e-47ad-8408-2d226619e99b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:24:54,923 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586ad701-7f9e-47ad-8408-2d226619e99b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 11:24:55,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:24:55,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 11:24:55,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:24:55,161 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 11:24:55,161 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:24:55,161 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2033357538] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:24:55,161 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:24:55,162 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 11 [2022-11-20 11:24:55,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344659502] [2022-11-20 11:24:55,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:24:55,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:24:55,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:24:55,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:24:55,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-20 11:24:55,170 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 169 [2022-11-20 11:24:55,171 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 152 transitions, 417 flow. Second operand has 7 states, 7 states have (on average 131.57142857142858) internal successors, (921), 7 states have internal predecessors, (921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:24:55,171 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:24:55,172 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 169 [2022-11-20 11:24:55,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:24:57,081 INFO L130 PetriNetUnfolder]: 1933/7429 cut-off events. [2022-11-20 11:24:57,081 INFO L131 PetriNetUnfolder]: For 1028/1028 co-relation queries the response was YES. [2022-11-20 11:24:57,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12946 conditions, 7429 events. 1933/7429 cut-off events. For 1028/1028 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 76113 event pairs, 1236 based on Foata normal form. 0/6127 useless extension candidates. Maximal degree in co-relation 12248. Up to 2609 conditions per place. [2022-11-20 11:24:57,169 INFO L137 encePairwiseOnDemand]: 160/169 looper letters, 53 selfloop transitions, 8 changer transitions 0/173 dead transitions. [2022-11-20 11:24:57,169 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 173 transitions, 592 flow [2022-11-20 11:24:57,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 11:24:57,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-20 11:24:57,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1086 transitions. [2022-11-20 11:24:57,175 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8032544378698225 [2022-11-20 11:24:57,175 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1086 transitions. [2022-11-20 11:24:57,175 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1086 transitions. [2022-11-20 11:24:57,176 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:24:57,177 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1086 transitions. [2022-11-20 11:24:57,180 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 135.75) internal successors, (1086), 8 states have internal predecessors, (1086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:24:57,184 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 169.0) internal successors, (1521), 9 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:24:57,186 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 169.0) internal successors, (1521), 9 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:24:57,187 INFO L175 Difference]: Start difference. First operand has 167 places, 152 transitions, 417 flow. Second operand 8 states and 1086 transitions. [2022-11-20 11:24:57,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 173 transitions, 592 flow [2022-11-20 11:24:57,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 173 transitions, 590 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 11:24:57,225 INFO L231 Difference]: Finished difference. Result has 176 places, 154 transitions, 449 flow [2022-11-20 11:24:57,225 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=415, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=449, PETRI_PLACES=176, PETRI_TRANSITIONS=154} [2022-11-20 11:24:57,229 INFO L288 CegarLoopForPetriNet]: 144 programPoint places, 32 predicate places. [2022-11-20 11:24:57,229 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 154 transitions, 449 flow [2022-11-20 11:24:57,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 131.57142857142858) internal successors, (921), 7 states have internal predecessors, (921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:24:57,230 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:24:57,231 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:24:57,240 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586ad701-7f9e-47ad-8408-2d226619e99b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 11:24:57,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586ad701-7f9e-47ad-8408-2d226619e99b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-20 11:24:57,439 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-20 11:24:57,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:24:57,440 INFO L85 PathProgramCache]: Analyzing trace with hash 585312722, now seen corresponding path program 1 times [2022-11-20 11:24:57,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:24:57,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219156459] [2022-11-20 11:24:57,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:24:57,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:24:57,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:24:57,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:24:57,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:24:57,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219156459] [2022-11-20 11:24:57,639 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219156459] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:24:57,639 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:24:57,639 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:24:57,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450605254] [2022-11-20 11:24:57,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:24:57,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 11:24:57,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:24:57,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 11:24:57,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:24:57,643 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 169 [2022-11-20 11:24:57,644 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 154 transitions, 449 flow. Second operand has 8 states, 8 states have (on average 126.375) internal successors, (1011), 8 states have internal predecessors, (1011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:24:57,644 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:24:57,645 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 169 [2022-11-20 11:24:57,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:24:59,445 INFO L130 PetriNetUnfolder]: 2394/5544 cut-off events. [2022-11-20 11:24:59,446 INFO L131 PetriNetUnfolder]: For 971/1004 co-relation queries the response was YES. [2022-11-20 11:24:59,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10737 conditions, 5544 events. 2394/5544 cut-off events. For 971/1004 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 48798 event pairs, 1912 based on Foata normal form. 33/4655 useless extension candidates. Maximal degree in co-relation 9905. Up to 3377 conditions per place. [2022-11-20 11:24:59,510 INFO L137 encePairwiseOnDemand]: 156/169 looper letters, 70 selfloop transitions, 12 changer transitions 0/192 dead transitions. [2022-11-20 11:24:59,510 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 192 transitions, 705 flow [2022-11-20 11:24:59,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 11:24:59,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-20 11:24:59,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1441 transitions. [2022-11-20 11:24:59,517 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7751479289940828 [2022-11-20 11:24:59,517 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1441 transitions. [2022-11-20 11:24:59,518 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1441 transitions. [2022-11-20 11:24:59,519 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:24:59,519 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1441 transitions. [2022-11-20 11:24:59,524 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 131.0) internal successors, (1441), 11 states have internal predecessors, (1441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:24:59,530 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 169.0) internal successors, (2028), 12 states have internal predecessors, (2028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:24:59,531 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 169.0) internal successors, (2028), 12 states have internal predecessors, (2028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:24:59,531 INFO L175 Difference]: Start difference. First operand has 176 places, 154 transitions, 449 flow. Second operand 11 states and 1441 transitions. [2022-11-20 11:24:59,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 192 transitions, 705 flow [2022-11-20 11:24:59,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 192 transitions, 695 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 11:24:59,544 INFO L231 Difference]: Finished difference. Result has 187 places, 159 transitions, 498 flow [2022-11-20 11:24:59,545 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=439, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=498, PETRI_PLACES=187, PETRI_TRANSITIONS=159} [2022-11-20 11:24:59,545 INFO L288 CegarLoopForPetriNet]: 144 programPoint places, 43 predicate places. [2022-11-20 11:24:59,546 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 159 transitions, 498 flow [2022-11-20 11:24:59,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 126.375) internal successors, (1011), 8 states have internal predecessors, (1011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:24:59,547 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:24:59,547 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:24:59,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 11:24:59,547 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-20 11:24:59,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:24:59,548 INFO L85 PathProgramCache]: Analyzing trace with hash 964825708, now seen corresponding path program 1 times [2022-11-20 11:24:59,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:24:59,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365555849] [2022-11-20 11:24:59,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:24:59,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:24:59,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:24:59,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:24:59,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:24:59,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365555849] [2022-11-20 11:24:59,723 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365555849] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:24:59,723 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:24:59,723 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:24:59,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691265854] [2022-11-20 11:24:59,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:24:59,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:24:59,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:24:59,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:24:59,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:24:59,727 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 169 [2022-11-20 11:24:59,729 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 159 transitions, 498 flow. Second operand has 6 states, 6 states have (on average 135.5) internal successors, (813), 6 states have internal predecessors, (813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:24:59,729 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:24:59,729 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 169 [2022-11-20 11:24:59,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:25:01,311 INFO L130 PetriNetUnfolder]: 2892/6532 cut-off events. [2022-11-20 11:25:01,311 INFO L131 PetriNetUnfolder]: For 1034/1038 co-relation queries the response was YES. [2022-11-20 11:25:01,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13176 conditions, 6532 events. 2892/6532 cut-off events. For 1034/1038 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 58938 event pairs, 244 based on Foata normal form. 172/5777 useless extension candidates. Maximal degree in co-relation 12516. Up to 2168 conditions per place. [2022-11-20 11:25:01,401 INFO L137 encePairwiseOnDemand]: 162/169 looper letters, 33 selfloop transitions, 8 changer transitions 0/169 dead transitions. [2022-11-20 11:25:01,401 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 169 transitions, 599 flow [2022-11-20 11:25:01,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:25:01,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 11:25:01,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 836 transitions. [2022-11-20 11:25:01,404 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8244575936883629 [2022-11-20 11:25:01,405 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 836 transitions. [2022-11-20 11:25:01,405 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 836 transitions. [2022-11-20 11:25:01,406 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:25:01,406 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 836 transitions. [2022-11-20 11:25:01,408 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 139.33333333333334) internal successors, (836), 6 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:25:01,411 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 169.0) internal successors, (1183), 7 states have internal predecessors, (1183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:25:01,412 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 169.0) internal successors, (1183), 7 states have internal predecessors, (1183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:25:01,412 INFO L175 Difference]: Start difference. First operand has 187 places, 159 transitions, 498 flow. Second operand 6 states and 836 transitions. [2022-11-20 11:25:01,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 169 transitions, 599 flow [2022-11-20 11:25:01,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 169 transitions, 583 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-20 11:25:01,460 INFO L231 Difference]: Finished difference. Result has 184 places, 157 transitions, 489 flow [2022-11-20 11:25:01,460 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=473, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=489, PETRI_PLACES=184, PETRI_TRANSITIONS=157} [2022-11-20 11:25:01,461 INFO L288 CegarLoopForPetriNet]: 144 programPoint places, 40 predicate places. [2022-11-20 11:25:01,461 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 157 transitions, 489 flow [2022-11-20 11:25:01,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 135.5) internal successors, (813), 6 states have internal predecessors, (813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:25:01,462 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:25:01,475 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:25:01,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 11:25:01,476 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-20 11:25:01,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:25:01,476 INFO L85 PathProgramCache]: Analyzing trace with hash 548431428, now seen corresponding path program 1 times [2022-11-20 11:25:01,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:25:01,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000020856] [2022-11-20 11:25:01,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:25:01,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:25:01,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:01,611 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:25:01,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:25:01,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000020856] [2022-11-20 11:25:01,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000020856] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:25:01,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2032705650] [2022-11-20 11:25:01,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:25:01,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:25:01,613 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586ad701-7f9e-47ad-8408-2d226619e99b/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:25:01,618 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586ad701-7f9e-47ad-8408-2d226619e99b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:25:01,626 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586ad701-7f9e-47ad-8408-2d226619e99b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 11:25:01,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:01,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 11:25:01,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:25:01,935 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:25:01,935 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:25:02,002 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:25:02,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2032705650] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:25:02,003 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:25:02,003 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-20 11:25:02,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081015113] [2022-11-20 11:25:02,004 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:25:02,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 11:25:02,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:25:02,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 11:25:02,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-20 11:25:02,008 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 169 [2022-11-20 11:25:02,010 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 157 transitions, 489 flow. Second operand has 12 states, 12 states have (on average 143.75) internal successors, (1725), 12 states have internal predecessors, (1725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:25:02,010 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:25:02,011 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 169 [2022-11-20 11:25:02,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:25:04,437 INFO L130 PetriNetUnfolder]: 4162/9817 cut-off events. [2022-11-20 11:25:04,438 INFO L131 PetriNetUnfolder]: For 1525/1529 co-relation queries the response was YES. [2022-11-20 11:25:04,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20464 conditions, 9817 events. 4162/9817 cut-off events. For 1525/1529 co-relation queries the response was YES. Maximal size of possible extension queue 440. Compared 95668 event pairs, 687 based on Foata normal form. 171/9312 useless extension candidates. Maximal degree in co-relation 18744. Up to 1598 conditions per place. [2022-11-20 11:25:04,569 INFO L137 encePairwiseOnDemand]: 162/169 looper letters, 102 selfloop transitions, 18 changer transitions 0/256 dead transitions. [2022-11-20 11:25:04,569 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 256 transitions, 1001 flow [2022-11-20 11:25:04,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-20 11:25:04,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-20 11:25:04,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2661 transitions. [2022-11-20 11:25:04,577 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8747534516765286 [2022-11-20 11:25:04,577 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2661 transitions. [2022-11-20 11:25:04,577 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2661 transitions. [2022-11-20 11:25:04,579 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:25:04,580 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2661 transitions. [2022-11-20 11:25:04,587 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 147.83333333333334) internal successors, (2661), 18 states have internal predecessors, (2661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:25:04,594 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 169.0) internal successors, (3211), 19 states have internal predecessors, (3211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:25:04,596 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 169.0) internal successors, (3211), 19 states have internal predecessors, (3211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:25:04,596 INFO L175 Difference]: Start difference. First operand has 184 places, 157 transitions, 489 flow. Second operand 18 states and 2661 transitions. [2022-11-20 11:25:04,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 256 transitions, 1001 flow [2022-11-20 11:25:04,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 256 transitions, 985 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-20 11:25:04,644 INFO L231 Difference]: Finished difference. Result has 200 places, 169 transitions, 579 flow [2022-11-20 11:25:04,645 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=473, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=579, PETRI_PLACES=200, PETRI_TRANSITIONS=169} [2022-11-20 11:25:04,645 INFO L288 CegarLoopForPetriNet]: 144 programPoint places, 56 predicate places. [2022-11-20 11:25:04,646 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 169 transitions, 579 flow [2022-11-20 11:25:04,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 143.75) internal successors, (1725), 12 states have internal predecessors, (1725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:25:04,647 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:25:04,647 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:25:04,665 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586ad701-7f9e-47ad-8408-2d226619e99b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 11:25:04,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586ad701-7f9e-47ad-8408-2d226619e99b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:25:04,855 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-20 11:25:04,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:25:04,857 INFO L85 PathProgramCache]: Analyzing trace with hash -178494420, now seen corresponding path program 1 times [2022-11-20 11:25:04,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:25:04,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165468720] [2022-11-20 11:25:04,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:25:04,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:25:04,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:04,992 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:25:04,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:25:04,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165468720] [2022-11-20 11:25:04,993 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165468720] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:25:04,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [725713046] [2022-11-20 11:25:04,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:25:04,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:25:04,994 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586ad701-7f9e-47ad-8408-2d226619e99b/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:25:04,995 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586ad701-7f9e-47ad-8408-2d226619e99b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:25:05,022 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586ad701-7f9e-47ad-8408-2d226619e99b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 11:25:05,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:05,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 11:25:05,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:25:05,416 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:25:05,416 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:25:05,417 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [725713046] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:25:05,417 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:25:05,417 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-20 11:25:05,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167040312] [2022-11-20 11:25:05,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:25:05,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:25:05,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:25:05,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:25:05,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:25:05,420 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 169 [2022-11-20 11:25:05,422 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 169 transitions, 579 flow. Second operand has 6 states, 6 states have (on average 143.5) internal successors, (861), 6 states have internal predecessors, (861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:25:05,422 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:25:05,422 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 169 [2022-11-20 11:25:05,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:25:07,333 INFO L130 PetriNetUnfolder]: 3672/8217 cut-off events. [2022-11-20 11:25:07,334 INFO L131 PetriNetUnfolder]: For 2827/2831 co-relation queries the response was YES. [2022-11-20 11:25:07,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18670 conditions, 8217 events. 3672/8217 cut-off events. For 2827/2831 co-relation queries the response was YES. Maximal size of possible extension queue 390. Compared 77479 event pairs, 210 based on Foata normal form. 228/8005 useless extension candidates. Maximal degree in co-relation 17378. Up to 2432 conditions per place. [2022-11-20 11:25:07,461 INFO L137 encePairwiseOnDemand]: 164/169 looper letters, 44 selfloop transitions, 11 changer transitions 0/191 dead transitions. [2022-11-20 11:25:07,462 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 191 transitions, 732 flow [2022-11-20 11:25:07,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:25:07,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 11:25:07,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1034 transitions. [2022-11-20 11:25:07,466 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8740490278951818 [2022-11-20 11:25:07,467 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1034 transitions. [2022-11-20 11:25:07,467 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1034 transitions. [2022-11-20 11:25:07,468 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:25:07,468 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1034 transitions. [2022-11-20 11:25:07,472 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 147.71428571428572) internal successors, (1034), 7 states have internal predecessors, (1034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:25:07,475 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 169.0) internal successors, (1352), 8 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:25:07,488 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 169.0) internal successors, (1352), 8 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:25:07,498 INFO L175 Difference]: Start difference. First operand has 200 places, 169 transitions, 579 flow. Second operand 7 states and 1034 transitions. [2022-11-20 11:25:07,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 191 transitions, 732 flow [2022-11-20 11:25:07,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 191 transitions, 700 flow, removed 11 selfloop flow, removed 5 redundant places. [2022-11-20 11:25:07,539 INFO L231 Difference]: Finished difference. Result has 196 places, 165 transitions, 542 flow [2022-11-20 11:25:07,540 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=520, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=542, PETRI_PLACES=196, PETRI_TRANSITIONS=165} [2022-11-20 11:25:07,541 INFO L288 CegarLoopForPetriNet]: 144 programPoint places, 52 predicate places. [2022-11-20 11:25:07,542 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 165 transitions, 542 flow [2022-11-20 11:25:07,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 143.5) internal successors, (861), 6 states have internal predecessors, (861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:25:07,543 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:25:07,543 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:25:07,556 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586ad701-7f9e-47ad-8408-2d226619e99b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-20 11:25:07,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586ad701-7f9e-47ad-8408-2d226619e99b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:25:07,749 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-20 11:25:07,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:25:07,750 INFO L85 PathProgramCache]: Analyzing trace with hash -2115802593, now seen corresponding path program 1 times [2022-11-20 11:25:07,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:25:07,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38193868] [2022-11-20 11:25:07,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:25:07,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:25:07,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:07,916 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 11:25:07,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:25:07,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38193868] [2022-11-20 11:25:07,917 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38193868] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:25:07,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [678194664] [2022-11-20 11:25:07,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:25:07,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:25:07,919 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586ad701-7f9e-47ad-8408-2d226619e99b/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:25:07,920 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586ad701-7f9e-47ad-8408-2d226619e99b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:25:07,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586ad701-7f9e-47ad-8408-2d226619e99b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-20 11:25:08,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:08,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 11:25:08,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:25:08,408 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:25:08,409 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:25:08,858 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:25:08,859 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [678194664] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:25:08,859 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:25:08,859 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 11, 11] total 23 [2022-11-20 11:25:08,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401319871] [2022-11-20 11:25:08,863 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:25:08,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-20 11:25:08,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:25:08,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-20 11:25:08,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=418, Unknown=0, NotChecked=0, Total=506 [2022-11-20 11:25:08,872 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 169 [2022-11-20 11:25:08,877 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 165 transitions, 542 flow. Second operand has 23 states, 23 states have (on average 122.65217391304348) internal successors, (2821), 23 states have internal predecessors, (2821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:25:08,877 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:25:08,877 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 169 [2022-11-20 11:25:08,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:25:13,254 INFO L130 PetriNetUnfolder]: 6807/14476 cut-off events. [2022-11-20 11:25:13,255 INFO L131 PetriNetUnfolder]: For 3806/3806 co-relation queries the response was YES. [2022-11-20 11:25:13,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31785 conditions, 14476 events. 6807/14476 cut-off events. For 3806/3806 co-relation queries the response was YES. Maximal size of possible extension queue 508. Compared 135093 event pairs, 1466 based on Foata normal form. 124/13462 useless extension candidates. Maximal degree in co-relation 29246. Up to 2690 conditions per place. [2022-11-20 11:25:13,436 INFO L137 encePairwiseOnDemand]: 151/169 looper letters, 178 selfloop transitions, 33 changer transitions 1/320 dead transitions. [2022-11-20 11:25:13,437 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 320 transitions, 1414 flow [2022-11-20 11:25:13,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-20 11:25:13,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-11-20 11:25:13,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 3539 transitions. [2022-11-20 11:25:13,460 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7478867286559594 [2022-11-20 11:25:13,461 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 3539 transitions. [2022-11-20 11:25:13,461 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 3539 transitions. [2022-11-20 11:25:13,464 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:25:13,465 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 3539 transitions. [2022-11-20 11:25:13,477 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 126.39285714285714) internal successors, (3539), 28 states have internal predecessors, (3539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:25:13,491 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 169.0) internal successors, (4901), 29 states have internal predecessors, (4901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:25:13,494 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 169.0) internal successors, (4901), 29 states have internal predecessors, (4901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:25:13,494 INFO L175 Difference]: Start difference. First operand has 196 places, 165 transitions, 542 flow. Second operand 28 states and 3539 transitions. [2022-11-20 11:25:13,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 320 transitions, 1414 flow [2022-11-20 11:25:13,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 320 transitions, 1400 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-20 11:25:13,553 INFO L231 Difference]: Finished difference. Result has 224 places, 180 transitions, 689 flow [2022-11-20 11:25:13,554 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=528, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=689, PETRI_PLACES=224, PETRI_TRANSITIONS=180} [2022-11-20 11:25:13,555 INFO L288 CegarLoopForPetriNet]: 144 programPoint places, 80 predicate places. [2022-11-20 11:25:13,555 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 180 transitions, 689 flow [2022-11-20 11:25:13,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 122.65217391304348) internal successors, (2821), 23 states have internal predecessors, (2821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:25:13,557 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:25:13,557 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] [2022-11-20 11:25:13,565 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586ad701-7f9e-47ad-8408-2d226619e99b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-20 11:25:13,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586ad701-7f9e-47ad-8408-2d226619e99b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-20 11:25:13,765 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-20 11:25:13,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:25:13,765 INFO L85 PathProgramCache]: Analyzing trace with hash -1911720162, now seen corresponding path program 2 times [2022-11-20 11:25:13,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:25:13,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370401716] [2022-11-20 11:25:13,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:25:13,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:25:13,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:14,060 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:25:14,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:25:14,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370401716] [2022-11-20 11:25:14,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370401716] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:25:14,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [646408788] [2022-11-20 11:25:14,061 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:25:14,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:25:14,062 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586ad701-7f9e-47ad-8408-2d226619e99b/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:25:14,063 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586ad701-7f9e-47ad-8408-2d226619e99b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:25:14,087 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586ad701-7f9e-47ad-8408-2d226619e99b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-20 11:25:14,189 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 11:25:14,190 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:25:14,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 11:25:14,199 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:25:14,417 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-20 11:25:14,418 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:25:14,626 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-20 11:25:14,626 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [646408788] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:25:14,626 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:25:14,627 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2022-11-20 11:25:14,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925081832] [2022-11-20 11:25:14,627 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:25:14,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-20 11:25:14,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:25:14,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-20 11:25:14,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-11-20 11:25:14,633 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 169 [2022-11-20 11:25:14,637 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 180 transitions, 689 flow. Second operand has 18 states, 18 states have (on average 127.61111111111111) internal successors, (2297), 18 states have internal predecessors, (2297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:25:14,637 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:25:14,637 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 169 [2022-11-20 11:25:14,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:25:20,085 INFO L130 PetriNetUnfolder]: 4950/22268 cut-off events. [2022-11-20 11:25:20,085 INFO L131 PetriNetUnfolder]: For 9000/9372 co-relation queries the response was YES. [2022-11-20 11:25:20,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44646 conditions, 22268 events. 4950/22268 cut-off events. For 9000/9372 co-relation queries the response was YES. Maximal size of possible extension queue 471. Compared 276485 event pairs, 3594 based on Foata normal form. 374/21071 useless extension candidates. Maximal degree in co-relation 42744. Up to 1785 conditions per place. [2022-11-20 11:25:20,356 INFO L137 encePairwiseOnDemand]: 158/169 looper letters, 136 selfloop transitions, 25 changer transitions 1/287 dead transitions. [2022-11-20 11:25:20,356 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 287 transitions, 1372 flow [2022-11-20 11:25:20,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-20 11:25:20,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-11-20 11:25:20,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3129 transitions. [2022-11-20 11:25:20,371 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7714497041420119 [2022-11-20 11:25:20,371 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3129 transitions. [2022-11-20 11:25:20,371 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3129 transitions. [2022-11-20 11:25:20,385 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:25:20,385 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3129 transitions. [2022-11-20 11:25:20,398 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 130.375) internal successors, (3129), 24 states have internal predecessors, (3129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:25:20,412 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 169.0) internal successors, (4225), 25 states have internal predecessors, (4225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:25:20,414 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 169.0) internal successors, (4225), 25 states have internal predecessors, (4225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:25:20,415 INFO L175 Difference]: Start difference. First operand has 224 places, 180 transitions, 689 flow. Second operand 24 states and 3129 transitions. [2022-11-20 11:25:20,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 287 transitions, 1372 flow [2022-11-20 11:25:20,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 287 transitions, 1321 flow, removed 5 selfloop flow, removed 16 redundant places. [2022-11-20 11:25:20,871 INFO L231 Difference]: Finished difference. Result has 231 places, 184 transitions, 713 flow [2022-11-20 11:25:20,871 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=628, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=713, PETRI_PLACES=231, PETRI_TRANSITIONS=184} [2022-11-20 11:25:20,873 INFO L288 CegarLoopForPetriNet]: 144 programPoint places, 87 predicate places. [2022-11-20 11:25:20,873 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 184 transitions, 713 flow [2022-11-20 11:25:20,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 127.61111111111111) internal successors, (2297), 18 states have internal predecessors, (2297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:25:20,874 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:25:20,875 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:25:20,883 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586ad701-7f9e-47ad-8408-2d226619e99b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-20 11:25:21,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586ad701-7f9e-47ad-8408-2d226619e99b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-20 11:25:21,083 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-20 11:25:21,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:25:21,084 INFO L85 PathProgramCache]: Analyzing trace with hash 508735683, now seen corresponding path program 1 times [2022-11-20 11:25:21,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:25:21,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827461158] [2022-11-20 11:25:21,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:25:21,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:25:21,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:21,577 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:25:21,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:25:21,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827461158] [2022-11-20 11:25:21,578 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827461158] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:25:21,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1887969464] [2022-11-20 11:25:21,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:25:21,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:25:21,579 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586ad701-7f9e-47ad-8408-2d226619e99b/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:25:21,580 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586ad701-7f9e-47ad-8408-2d226619e99b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:25:21,594 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586ad701-7f9e-47ad-8408-2d226619e99b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-20 11:25:21,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:21,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 11:25:21,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:25:21,909 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 11:25:21,909 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:25:21,909 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1887969464] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:25:21,910 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:25:21,910 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 13 [2022-11-20 11:25:21,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614867207] [2022-11-20 11:25:21,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:25:21,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:25:21,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:25:21,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:25:21,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-11-20 11:25:21,913 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 169 [2022-11-20 11:25:21,914 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 184 transitions, 713 flow. Second operand has 6 states, 6 states have (on average 134.5) internal successors, (807), 6 states have internal predecessors, (807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:25:21,914 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:25:21,914 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 169 [2022-11-20 11:25:21,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:25:25,855 INFO L130 PetriNetUnfolder]: 8581/18084 cut-off events. [2022-11-20 11:25:25,855 INFO L131 PetriNetUnfolder]: For 6714/7218 co-relation queries the response was YES. [2022-11-20 11:25:25,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40949 conditions, 18084 events. 8581/18084 cut-off events. For 6714/7218 co-relation queries the response was YES. Maximal size of possible extension queue 686. Compared 183322 event pairs, 2721 based on Foata normal form. 1021/17687 useless extension candidates. Maximal degree in co-relation 39119. Up to 5291 conditions per place. [2022-11-20 11:25:26,054 INFO L137 encePairwiseOnDemand]: 161/169 looper letters, 52 selfloop transitions, 11 changer transitions 6/216 dead transitions. [2022-11-20 11:25:26,054 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 216 transitions, 969 flow [2022-11-20 11:25:26,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:25:26,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 11:25:26,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 968 transitions. [2022-11-20 11:25:26,057 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8182586644125106 [2022-11-20 11:25:26,058 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 968 transitions. [2022-11-20 11:25:26,058 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 968 transitions. [2022-11-20 11:25:26,059 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:25:26,059 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 968 transitions. [2022-11-20 11:25:26,062 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 138.28571428571428) internal successors, (968), 7 states have internal predecessors, (968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:25:26,065 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 169.0) internal successors, (1352), 8 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:25:26,066 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 169.0) internal successors, (1352), 8 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:25:26,066 INFO L175 Difference]: Start difference. First operand has 231 places, 184 transitions, 713 flow. Second operand 7 states and 968 transitions. [2022-11-20 11:25:26,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 216 transitions, 969 flow [2022-11-20 11:25:26,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 216 transitions, 905 flow, removed 2 selfloop flow, removed 18 redundant places. [2022-11-20 11:25:26,269 INFO L231 Difference]: Finished difference. Result has 218 places, 180 transitions, 660 flow [2022-11-20 11:25:26,270 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=645, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=660, PETRI_PLACES=218, PETRI_TRANSITIONS=180} [2022-11-20 11:25:26,272 INFO L288 CegarLoopForPetriNet]: 144 programPoint places, 74 predicate places. [2022-11-20 11:25:26,272 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 180 transitions, 660 flow [2022-11-20 11:25:26,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 134.5) internal successors, (807), 6 states have internal predecessors, (807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:25:26,273 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:25:26,273 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:25:26,282 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586ad701-7f9e-47ad-8408-2d226619e99b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-20 11:25:26,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586ad701-7f9e-47ad-8408-2d226619e99b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-20 11:25:26,481 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-20 11:25:26,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:25:26,482 INFO L85 PathProgramCache]: Analyzing trace with hash -786562222, now seen corresponding path program 1 times [2022-11-20 11:25:26,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:25:26,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708056029] [2022-11-20 11:25:26,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:25:26,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:25:26,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:26,661 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-20 11:25:26,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:25:26,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708056029] [2022-11-20 11:25:26,663 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708056029] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:25:26,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1863156732] [2022-11-20 11:25:26,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:25:26,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:25:26,664 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586ad701-7f9e-47ad-8408-2d226619e99b/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:25:26,665 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586ad701-7f9e-47ad-8408-2d226619e99b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:25:26,672 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586ad701-7f9e-47ad-8408-2d226619e99b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-20 11:25:26,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:26,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 11:25:26,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:25:26,853 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-20 11:25:26,853 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:25:26,854 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1863156732] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:25:26,854 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:25:26,854 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-20 11:25:26,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188293046] [2022-11-20 11:25:26,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:25:26,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:25:26,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:25:26,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:25:26,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:25:26,858 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 169 [2022-11-20 11:25:26,860 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 180 transitions, 660 flow. Second operand has 6 states, 6 states have (on average 143.33333333333334) internal successors, (860), 6 states have internal predecessors, (860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:25:26,860 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:25:26,860 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 169 [2022-11-20 11:25:26,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:25:29,102 INFO L130 PetriNetUnfolder]: 4318/9622 cut-off events. [2022-11-20 11:25:29,103 INFO L131 PetriNetUnfolder]: For 2741/2741 co-relation queries the response was YES. [2022-11-20 11:25:29,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23080 conditions, 9622 events. 4318/9622 cut-off events. For 2741/2741 co-relation queries the response was YES. Maximal size of possible extension queue 343. Compared 90781 event pairs, 70 based on Foata normal form. 190/9359 useless extension candidates. Maximal degree in co-relation 23029. Up to 2377 conditions per place. [2022-11-20 11:25:29,207 INFO L137 encePairwiseOnDemand]: 164/169 looper letters, 44 selfloop transitions, 13 changer transitions 0/203 dead transitions. [2022-11-20 11:25:29,207 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 203 transitions, 830 flow [2022-11-20 11:25:29,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:25:29,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 11:25:29,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1033 transitions. [2022-11-20 11:25:29,210 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8732037193575655 [2022-11-20 11:25:29,210 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1033 transitions. [2022-11-20 11:25:29,210 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1033 transitions. [2022-11-20 11:25:29,211 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:25:29,211 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1033 transitions. [2022-11-20 11:25:29,214 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 147.57142857142858) internal successors, (1033), 7 states have internal predecessors, (1033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:25:29,216 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 169.0) internal successors, (1352), 8 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:25:29,217 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 169.0) internal successors, (1352), 8 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:25:29,217 INFO L175 Difference]: Start difference. First operand has 218 places, 180 transitions, 660 flow. Second operand 7 states and 1033 transitions. [2022-11-20 11:25:29,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 203 transitions, 830 flow [2022-11-20 11:25:29,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 203 transitions, 806 flow, removed 1 selfloop flow, removed 6 redundant places. [2022-11-20 11:25:29,266 INFO L231 Difference]: Finished difference. Result has 214 places, 178 transitions, 648 flow [2022-11-20 11:25:29,267 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=622, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=648, PETRI_PLACES=214, PETRI_TRANSITIONS=178} [2022-11-20 11:25:29,267 INFO L288 CegarLoopForPetriNet]: 144 programPoint places, 70 predicate places. [2022-11-20 11:25:29,268 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 178 transitions, 648 flow [2022-11-20 11:25:29,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 143.33333333333334) internal successors, (860), 6 states have internal predecessors, (860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:25:29,268 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:25:29,268 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:25:29,274 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586ad701-7f9e-47ad-8408-2d226619e99b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-20 11:25:29,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586ad701-7f9e-47ad-8408-2d226619e99b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-20 11:25:29,469 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-20 11:25:29,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:25:29,470 INFO L85 PathProgramCache]: Analyzing trace with hash -87650249, now seen corresponding path program 2 times [2022-11-20 11:25:29,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:25:29,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093296961] [2022-11-20 11:25:29,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:25:29,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:25:29,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:29,912 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 8 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:25:29,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:25:29,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093296961] [2022-11-20 11:25:29,912 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093296961] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:25:29,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [637213252] [2022-11-20 11:25:29,913 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:25:29,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:25:29,913 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586ad701-7f9e-47ad-8408-2d226619e99b/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:25:29,914 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586ad701-7f9e-47ad-8408-2d226619e99b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:25:29,943 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586ad701-7f9e-47ad-8408-2d226619e99b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-20 11:25:30,051 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 11:25:30,052 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:25:30,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 11:25:30,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:25:30,270 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-20 11:25:30,270 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:25:30,465 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-20 11:25:30,465 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [637213252] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:25:30,465 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:25:30,466 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 5, 5] total 19 [2022-11-20 11:25:30,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665058473] [2022-11-20 11:25:30,466 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:25:30,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 11:25:30,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:25:30,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 11:25:30,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2022-11-20 11:25:30,470 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 169 [2022-11-20 11:25:30,473 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 178 transitions, 648 flow. Second operand has 19 states, 19 states have (on average 120.21052631578948) internal successors, (2284), 19 states have internal predecessors, (2284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:25:30,473 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:25:30,474 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 169 [2022-11-20 11:25:30,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:25:36,444 INFO L130 PetriNetUnfolder]: 8310/21083 cut-off events. [2022-11-20 11:25:36,444 INFO L131 PetriNetUnfolder]: For 10128/10675 co-relation queries the response was YES. [2022-11-20 11:25:36,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47709 conditions, 21083 events. 8310/21083 cut-off events. For 10128/10675 co-relation queries the response was YES. Maximal size of possible extension queue 553. Compared 224500 event pairs, 1350 based on Foata normal form. 262/20100 useless extension candidates. Maximal degree in co-relation 44933. Up to 3685 conditions per place. [2022-11-20 11:25:36,713 INFO L137 encePairwiseOnDemand]: 151/169 looper letters, 224 selfloop transitions, 48 changer transitions 0/374 dead transitions. [2022-11-20 11:25:36,714 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 374 transitions, 1797 flow [2022-11-20 11:25:36,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-11-20 11:25:36,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2022-11-20 11:25:36,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 4898 transitions. [2022-11-20 11:25:36,724 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7245562130177515 [2022-11-20 11:25:36,724 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 4898 transitions. [2022-11-20 11:25:36,724 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 4898 transitions. [2022-11-20 11:25:36,727 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:25:36,728 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 4898 transitions. [2022-11-20 11:25:36,739 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 122.45) internal successors, (4898), 40 states have internal predecessors, (4898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:25:36,749 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 169.0) internal successors, (6929), 41 states have internal predecessors, (6929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:25:36,752 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 169.0) internal successors, (6929), 41 states have internal predecessors, (6929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:25:36,753 INFO L175 Difference]: Start difference. First operand has 214 places, 178 transitions, 648 flow. Second operand 40 states and 4898 transitions. [2022-11-20 11:25:36,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 374 transitions, 1797 flow [2022-11-20 11:25:36,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 374 transitions, 1757 flow, removed 2 selfloop flow, removed 6 redundant places. [2022-11-20 11:25:36,908 INFO L231 Difference]: Finished difference. Result has 249 places, 189 transitions, 800 flow [2022-11-20 11:25:36,909 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=613, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=800, PETRI_PLACES=249, PETRI_TRANSITIONS=189} [2022-11-20 11:25:36,909 INFO L288 CegarLoopForPetriNet]: 144 programPoint places, 105 predicate places. [2022-11-20 11:25:36,910 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 189 transitions, 800 flow [2022-11-20 11:25:36,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 120.21052631578948) internal successors, (2284), 19 states have internal predecessors, (2284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:25:36,911 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:25:36,911 INFO L209 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:25:36,917 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586ad701-7f9e-47ad-8408-2d226619e99b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-20 11:25:37,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586ad701-7f9e-47ad-8408-2d226619e99b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-20 11:25:37,113 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-20 11:25:37,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:25:37,114 INFO L85 PathProgramCache]: Analyzing trace with hash -1042491535, now seen corresponding path program 2 times [2022-11-20 11:25:37,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:25:37,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297437728] [2022-11-20 11:25:37,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:25:37,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:25:37,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:37,369 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:25:37,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:25:37,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297437728] [2022-11-20 11:25:37,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297437728] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:25:37,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1143495248] [2022-11-20 11:25:37,370 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:25:37,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:25:37,371 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586ad701-7f9e-47ad-8408-2d226619e99b/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:25:37,376 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586ad701-7f9e-47ad-8408-2d226619e99b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:25:37,407 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586ad701-7f9e-47ad-8408-2d226619e99b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-20 11:25:37,511 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 11:25:37,512 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:25:37,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 11:25:37,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:25:37,716 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-11-20 11:25:37,716 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:25:37,926 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-11-20 11:25:37,926 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1143495248] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:25:37,926 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:25:37,926 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5, 5] total 15 [2022-11-20 11:25:37,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695238102] [2022-11-20 11:25:37,927 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:25:37,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-20 11:25:37,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:25:37,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-20 11:25:37,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2022-11-20 11:25:37,936 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 169 [2022-11-20 11:25:37,939 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 189 transitions, 800 flow. Second operand has 16 states, 16 states have (on average 137.6875) internal successors, (2203), 16 states have internal predecessors, (2203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:25:37,939 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:25:37,940 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 169 [2022-11-20 11:25:37,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:25:43,680 INFO L130 PetriNetUnfolder]: 11292/23430 cut-off events. [2022-11-20 11:25:43,681 INFO L131 PetriNetUnfolder]: For 7297/7303 co-relation queries the response was YES. [2022-11-20 11:25:43,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51644 conditions, 23430 events. 11292/23430 cut-off events. For 7297/7303 co-relation queries the response was YES. Maximal size of possible extension queue 950. Compared 242625 event pairs, 890 based on Foata normal form. 284/22342 useless extension candidates. Maximal degree in co-relation 51108. Up to 3075 conditions per place. [2022-11-20 11:25:43,930 INFO L137 encePairwiseOnDemand]: 160/169 looper letters, 0 selfloop transitions, 0 changer transitions 308/308 dead transitions. [2022-11-20 11:25:43,930 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 308 transitions, 1414 flow [2022-11-20 11:25:43,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-20 11:25:43,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-11-20 11:25:43,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 3104 transitions. [2022-11-20 11:25:43,935 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8348574502420656 [2022-11-20 11:25:43,935 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 3104 transitions. [2022-11-20 11:25:43,936 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 3104 transitions. [2022-11-20 11:25:43,937 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:25:43,937 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 3104 transitions. [2022-11-20 11:25:43,944 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 141.0909090909091) internal successors, (3104), 22 states have internal predecessors, (3104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:25:43,950 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 169.0) internal successors, (3887), 23 states have internal predecessors, (3887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:25:43,952 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 169.0) internal successors, (3887), 23 states have internal predecessors, (3887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:25:43,952 INFO L175 Difference]: Start difference. First operand has 249 places, 189 transitions, 800 flow. Second operand 22 states and 3104 transitions. [2022-11-20 11:25:43,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 308 transitions, 1414 flow [2022-11-20 11:25:44,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 308 transitions, 1343 flow, removed 5 selfloop flow, removed 25 redundant places. [2022-11-20 11:25:44,062 INFO L231 Difference]: Finished difference. Result has 244 places, 0 transitions, 0 flow [2022-11-20 11:25:44,063 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=719, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=0, PETRI_PLACES=244, PETRI_TRANSITIONS=0} [2022-11-20 11:25:44,063 INFO L288 CegarLoopForPetriNet]: 144 programPoint places, 100 predicate places. [2022-11-20 11:25:44,064 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 0 transitions, 0 flow [2022-11-20 11:25:44,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 137.6875) internal successors, (2203), 16 states have internal predecessors, (2203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:25:44,068 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 17 remaining) [2022-11-20 11:25:44,069 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2022-11-20 11:25:44,069 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2022-11-20 11:25:44,069 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2022-11-20 11:25:44,069 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2022-11-20 11:25:44,070 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2022-11-20 11:25:44,070 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2022-11-20 11:25:44,070 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2022-11-20 11:25:44,070 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 17 remaining) [2022-11-20 11:25:44,070 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 17 remaining) [2022-11-20 11:25:44,071 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 17 remaining) [2022-11-20 11:25:44,071 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2022-11-20 11:25:44,071 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2022-11-20 11:25:44,072 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2022-11-20 11:25:44,072 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2022-11-20 11:25:44,072 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2022-11-20 11:25:44,072 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2022-11-20 11:25:44,087 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586ad701-7f9e-47ad-8408-2d226619e99b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-11-20 11:25:44,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586ad701-7f9e-47ad-8408-2d226619e99b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-20 11:25:44,279 INFO L444 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:25:44,286 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-20 11:25:44,286 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 11:25:44,292 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 11:25:44 BasicIcfg [2022-11-20 11:25:44,293 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 11:25:44,293 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 11:25:44,294 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 11:25:44,294 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 11:25:44,295 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:24:46" (3/4) ... [2022-11-20 11:25:44,298 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-20 11:25:44,306 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-11-20 11:25:44,307 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-11-20 11:25:44,307 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2022-11-20 11:25:44,317 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 24 nodes and edges [2022-11-20 11:25:44,318 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-20 11:25:44,318 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-20 11:25:44,319 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-20 11:25:44,380 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586ad701-7f9e-47ad-8408-2d226619e99b/bin/uautomizer-ug76WZFUDN/witness.graphml [2022-11-20 11:25:44,380 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 11:25:44,381 INFO L158 Benchmark]: Toolchain (without parser) took 59267.69ms. Allocated memory was 155.2MB in the beginning and 10.3GB in the end (delta: 10.2GB). Free memory was 113.4MB in the beginning and 6.0GB in the end (delta: -5.9GB). Peak memory consumption was 4.3GB. Max. memory is 16.1GB. [2022-11-20 11:25:44,382 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 155.2MB. Free memory was 98.3MB in the beginning and 98.2MB in the end (delta: 139.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 11:25:44,382 INFO L158 Benchmark]: CACSL2BoogieTranslator took 343.43ms. Allocated memory is still 155.2MB. Free memory was 112.8MB in the beginning and 101.5MB in the end (delta: 11.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-20 11:25:44,382 INFO L158 Benchmark]: Boogie Procedure Inliner took 62.53ms. Allocated memory is still 155.2MB. Free memory was 101.5MB in the beginning and 99.9MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 11:25:44,383 INFO L158 Benchmark]: Boogie Preprocessor took 61.70ms. Allocated memory is still 155.2MB. Free memory was 99.9MB in the beginning and 98.1MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 11:25:44,383 INFO L158 Benchmark]: RCFGBuilder took 990.99ms. Allocated memory is still 155.2MB. Free memory was 98.1MB in the beginning and 77.2MB in the end (delta: 20.9MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-11-20 11:25:44,384 INFO L158 Benchmark]: TraceAbstraction took 57712.42ms. Allocated memory was 155.2MB in the beginning and 10.3GB in the end (delta: 10.2GB). Free memory was 76.3MB in the beginning and 6.0GB in the end (delta: -6.0GB). Peak memory consumption was 4.2GB. Max. memory is 16.1GB. [2022-11-20 11:25:44,384 INFO L158 Benchmark]: Witness Printer took 86.93ms. Allocated memory is still 10.3GB. Free memory was 6.0GB in the beginning and 6.0GB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-20 11:25:44,387 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 155.2MB. Free memory was 98.3MB in the beginning and 98.2MB in the end (delta: 139.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 343.43ms. Allocated memory is still 155.2MB. Free memory was 112.8MB in the beginning and 101.5MB in the end (delta: 11.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 62.53ms. Allocated memory is still 155.2MB. Free memory was 101.5MB in the beginning and 99.9MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 61.70ms. Allocated memory is still 155.2MB. Free memory was 99.9MB in the beginning and 98.1MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 990.99ms. Allocated memory is still 155.2MB. Free memory was 98.1MB in the beginning and 77.2MB in the end (delta: 20.9MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 57712.42ms. Allocated memory was 155.2MB in the beginning and 10.3GB in the end (delta: 10.2GB). Free memory was 76.3MB in the beginning and 6.0GB in the end (delta: -6.0GB). Peak memory consumption was 4.2GB. Max. memory is 16.1GB. * Witness Printer took 86.93ms. Allocated memory is still 10.3GB. Free memory was 6.0GB in the beginning and 6.0GB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 46]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 46]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 58]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 58]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 70]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 70]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 110]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 110]: 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 7 procedures, 200 locations, 17 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: 57.4s, OverallIterations: 16, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 45.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3258 SdHoareTripleChecker+Valid, 3.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3258 mSDsluCounter, 440 SdHoareTripleChecker+Invalid, 2.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 348 mSDsCounter, 97 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3236 IncrementalHoareTripleChecker+Invalid, 3333 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 97 mSolverCounterUnsat, 92 mSDtfsCounter, 3236 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1696 GetRequests, 1391 SyntacticMatches, 12 SemanticMatches, 293 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1922 ImplicationChecksByTransitivity, 4.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=800occurred in iteration=15, InterpolantAutomatonStates: 218, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 6.0s InterpolantComputationTime, 2225 NumberOfCodeBlocks, 2129 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 2716 ConstructedInterpolants, 0 QuantifiedInterpolants, 5550 SizeOfPredicates, 46 NumberOfNonLiveVariables, 1997 ConjunctsInSsa, 63 ConjunctsInUnsatCore, 33 InterpolantComputations, 10 PerfectInterpolantSequences, 309/597 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-20 11:25:44,422 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586ad701-7f9e-47ad-8408-2d226619e99b/bin/uautomizer-ug76WZFUDN/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