./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-word-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08d27d4-e415-4aaf-af63-f84f1540c5f2/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08d27d4-e415-4aaf-af63-f84f1540c5f2/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_e08d27d4-e415-4aaf-af63-f84f1540c5f2/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08d27d4-e415-4aaf-af63-f84f1540c5f2/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-word-trans.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08d27d4-e415-4aaf-af63-f84f1540c5f2/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_e08d27d4-e415-4aaf-af63-f84f1540c5f2/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 73462fb8dbdc39f07edabdd79150cbad579fbba379eb033cd2e89802bbb8b9a6 --- 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 12:36:25,550 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 12:36:25,552 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 12:36:25,596 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 12:36:25,597 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 12:36:25,598 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 12:36:25,600 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 12:36:25,602 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 12:36:25,604 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 12:36:25,605 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 12:36:25,607 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 12:36:25,608 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 12:36:25,609 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 12:36:25,610 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 12:36:25,611 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 12:36:25,613 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 12:36:25,614 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 12:36:25,615 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 12:36:25,617 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 12:36:25,620 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 12:36:25,622 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 12:36:25,623 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 12:36:25,625 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 12:36:25,626 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 12:36:25,630 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 12:36:25,631 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 12:36:25,631 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 12:36:25,632 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 12:36:25,633 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 12:36:25,640 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 12:36:25,640 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 12:36:25,641 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 12:36:25,642 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 12:36:25,643 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 12:36:25,645 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 12:36:25,645 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 12:36:25,646 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 12:36:25,646 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 12:36:25,647 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 12:36:25,648 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 12:36:25,649 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 12:36:25,650 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08d27d4-e415-4aaf-af63-f84f1540c5f2/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-20 12:36:25,678 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 12:36:25,679 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 12:36:25,679 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 12:36:25,680 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 12:36:25,680 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 12:36:25,681 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 12:36:25,682 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 12:36:25,682 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 12:36:25,682 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 12:36:25,683 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 12:36:25,683 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 12:36:25,683 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 12:36:25,684 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 12:36:25,684 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 12:36:25,684 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 12:36:25,685 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 12:36:25,685 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 12:36:25,685 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 12:36:25,686 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-20 12:36:25,686 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 12:36:25,686 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 12:36:25,687 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 12:36:25,687 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 12:36:25,687 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 12:36:25,688 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 12:36:25,688 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 12:36:25,688 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:36:25,689 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 12:36:25,689 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 12:36:25,689 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 12:36:25,690 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 12:36:25,690 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 12:36:25,690 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 12:36:25,691 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 12:36:25,691 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 12:36:25,691 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_e08d27d4-e415-4aaf-af63-f84f1540c5f2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08d27d4-e415-4aaf-af63-f84f1540c5f2/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 73462fb8dbdc39f07edabdd79150cbad579fbba379eb033cd2e89802bbb8b9a6 [2022-11-20 12:36:25,986 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 12:36:26,013 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 12:36:26,016 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 12:36:26,018 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 12:36:26,018 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 12:36:26,020 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08d27d4-e415-4aaf-af63-f84f1540c5f2/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/weaver/chl-word-trans.wvr.c [2022-11-20 12:36:29,843 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 12:36:30,144 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 12:36:30,145 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08d27d4-e415-4aaf-af63-f84f1540c5f2/sv-benchmarks/c/weaver/chl-word-trans.wvr.c [2022-11-20 12:36:30,158 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08d27d4-e415-4aaf-af63-f84f1540c5f2/bin/uautomizer-ug76WZFUDN/data/eee6f4b32/50d8195dca2e4edd965e61ed72230f24/FLAG681ebb2cd [2022-11-20 12:36:30,182 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08d27d4-e415-4aaf-af63-f84f1540c5f2/bin/uautomizer-ug76WZFUDN/data/eee6f4b32/50d8195dca2e4edd965e61ed72230f24 [2022-11-20 12:36:30,185 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 12:36:30,187 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 12:36:30,188 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 12:36:30,189 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 12:36:30,193 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 12:36:30,194 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:36:30" (1/1) ... [2022-11-20 12:36:30,196 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38b7706e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:36:30, skipping insertion in model container [2022-11-20 12:36:30,196 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:36:30" (1/1) ... [2022-11-20 12:36:30,205 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 12:36:30,230 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 12:36:30,460 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_e08d27d4-e415-4aaf-af63-f84f1540c5f2/sv-benchmarks/c/weaver/chl-word-trans.wvr.c[3292,3305] [2022-11-20 12:36:30,471 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:36:30,483 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 12:36:30,518 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_e08d27d4-e415-4aaf-af63-f84f1540c5f2/sv-benchmarks/c/weaver/chl-word-trans.wvr.c[3292,3305] [2022-11-20 12:36:30,523 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:36:30,541 INFO L208 MainTranslator]: Completed translation [2022-11-20 12:36:30,542 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:36:30 WrapperNode [2022-11-20 12:36:30,542 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 12:36:30,543 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 12:36:30,543 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 12:36:30,544 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 12:36:30,553 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:36:30" (1/1) ... [2022-11-20 12:36:30,564 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:36:30" (1/1) ... [2022-11-20 12:36:30,599 INFO L138 Inliner]: procedures = 25, calls = 44, calls flagged for inlining = 8, calls inlined = 12, statements flattened = 178 [2022-11-20 12:36:30,600 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 12:36:30,601 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 12:36:30,601 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 12:36:30,601 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 12:36:30,613 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:36:30" (1/1) ... [2022-11-20 12:36:30,613 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:36:30" (1/1) ... [2022-11-20 12:36:30,618 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:36:30" (1/1) ... [2022-11-20 12:36:30,619 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:36:30" (1/1) ... [2022-11-20 12:36:30,631 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:36:30" (1/1) ... [2022-11-20 12:36:30,637 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:36:30" (1/1) ... [2022-11-20 12:36:30,640 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:36:30" (1/1) ... [2022-11-20 12:36:30,642 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:36:30" (1/1) ... [2022-11-20 12:36:30,646 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 12:36:30,647 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 12:36:30,647 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 12:36:30,648 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 12:36:30,649 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:36:30" (1/1) ... [2022-11-20 12:36:30,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:36:30,695 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08d27d4-e415-4aaf-af63-f84f1540c5f2/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:36:30,709 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08d27d4-e415-4aaf-af63-f84f1540c5f2/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 12:36:30,737 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08d27d4-e415-4aaf-af63-f84f1540c5f2/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 12:36:30,764 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 12:36:30,764 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 12:36:30,764 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 12:36:30,764 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 12:36:30,765 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-20 12:36:30,765 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-20 12:36:30,765 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-20 12:36:30,765 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-20 12:36:30,765 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-20 12:36:30,766 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-20 12:36:30,766 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 12:36:30,766 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 12:36:30,766 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 12:36:30,766 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 12:36:30,767 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 12:36:30,768 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 12:36:30,988 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 12:36:30,990 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 12:36:31,746 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 12:36:31,762 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 12:36:31,763 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-11-20 12:36:31,766 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:36:31 BoogieIcfgContainer [2022-11-20 12:36:31,766 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 12:36:31,769 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 12:36:31,770 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 12:36:31,774 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 12:36:31,774 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 12:36:30" (1/3) ... [2022-11-20 12:36:31,775 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3304f799 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:36:31, skipping insertion in model container [2022-11-20 12:36:31,775 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:36:30" (2/3) ... [2022-11-20 12:36:31,776 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3304f799 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:36:31, skipping insertion in model container [2022-11-20 12:36:31,776 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:36:31" (3/3) ... [2022-11-20 12:36:31,778 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-word-trans.wvr.c [2022-11-20 12:36:31,789 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 12:36:31,802 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 12:36:31,803 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2022-11-20 12:36:31,803 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 12:36:31,932 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-20 12:36:32,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 319 places, 337 transitions, 698 flow [2022-11-20 12:36:32,286 INFO L130 PetriNetUnfolder]: 28/334 cut-off events. [2022-11-20 12:36:32,287 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-20 12:36:32,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 347 conditions, 334 events. 28/334 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 539 event pairs, 0 based on Foata normal form. 0/288 useless extension candidates. Maximal degree in co-relation 269. Up to 3 conditions per place. [2022-11-20 12:36:32,301 INFO L82 GeneralOperation]: Start removeDead. Operand has 319 places, 337 transitions, 698 flow [2022-11-20 12:36:32,317 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 296 places, 313 transitions, 641 flow [2022-11-20 12:36:32,345 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 12:36:32,356 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;@450e2a44, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 12:36:32,357 INFO L358 AbstractCegarLoop]: Starting to check reachability of 33 error locations. [2022-11-20 12:36:32,425 INFO L130 PetriNetUnfolder]: 3/81 cut-off events. [2022-11-20 12:36:32,425 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 12:36:32,425 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:36:32,427 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] [2022-11-20 12:36:32,428 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2022-11-20 12:36:32,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:36:32,438 INFO L85 PathProgramCache]: Analyzing trace with hash -541567933, now seen corresponding path program 1 times [2022-11-20 12:36:32,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:36:32,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968776265] [2022-11-20 12:36:32,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:36:32,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:36:32,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:33,142 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 12:36:33,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:36:33,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968776265] [2022-11-20 12:36:33,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968776265] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:36:33,146 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:36:33,146 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:36:33,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063620237] [2022-11-20 12:36:33,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:36:33,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:36:33,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:36:33,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:36:33,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:36:33,217 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 281 out of 337 [2022-11-20 12:36:33,223 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 313 transitions, 641 flow. Second operand has 4 states, 4 states have (on average 282.5) internal successors, (1130), 4 states have internal predecessors, (1130), 0 states have call successors, (0), 0 states 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 12:36:33,224 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:36:33,224 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 281 of 337 [2022-11-20 12:36:33,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:36:33,608 INFO L130 PetriNetUnfolder]: 29/490 cut-off events. [2022-11-20 12:36:33,608 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2022-11-20 12:36:33,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 583 conditions, 490 events. 29/490 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1552 event pairs, 0 based on Foata normal form. 24/448 useless extension candidates. Maximal degree in co-relation 470. Up to 44 conditions per place. [2022-11-20 12:36:33,622 INFO L137 encePairwiseOnDemand]: 305/337 looper letters, 58 selfloop transitions, 14 changer transitions 6/332 dead transitions. [2022-11-20 12:36:33,622 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 332 transitions, 838 flow [2022-11-20 12:36:33,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:36:33,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 12:36:33,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1501 transitions. [2022-11-20 12:36:33,657 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8908011869436202 [2022-11-20 12:36:33,658 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1501 transitions. [2022-11-20 12:36:33,660 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1501 transitions. [2022-11-20 12:36:33,665 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:36:33,668 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1501 transitions. [2022-11-20 12:36:33,682 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 300.2) internal successors, (1501), 5 states have internal predecessors, (1501), 0 states have call successors, (0), 0 states 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 12:36:33,694 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 337.0) internal successors, (2022), 6 states have internal predecessors, (2022), 0 states have call successors, (0), 0 states 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 12:36:33,696 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 337.0) internal successors, (2022), 6 states have internal predecessors, (2022), 0 states have call successors, (0), 0 states 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 12:36:33,698 INFO L175 Difference]: Start difference. First operand has 296 places, 313 transitions, 641 flow. Second operand 5 states and 1501 transitions. [2022-11-20 12:36:33,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 332 transitions, 838 flow [2022-11-20 12:36:33,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 332 transitions, 820 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-20 12:36:33,715 INFO L231 Difference]: Finished difference. Result has 298 places, 306 transitions, 700 flow [2022-11-20 12:36:33,719 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=337, PETRI_DIFFERENCE_MINUEND_FLOW=608, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=700, PETRI_PLACES=298, PETRI_TRANSITIONS=306} [2022-11-20 12:36:33,723 INFO L288 CegarLoopForPetriNet]: 296 programPoint places, 2 predicate places. [2022-11-20 12:36:33,724 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 306 transitions, 700 flow [2022-11-20 12:36:33,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 282.5) internal successors, (1130), 4 states have internal predecessors, (1130), 0 states have call successors, (0), 0 states 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 12:36:33,726 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:36:33,726 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:36:33,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 12:36:33,727 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2022-11-20 12:36:33,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:36:33,728 INFO L85 PathProgramCache]: Analyzing trace with hash -819980877, now seen corresponding path program 1 times [2022-11-20 12:36:33,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:36:33,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403648713] [2022-11-20 12:36:33,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:36:33,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:36:33,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:34,078 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 12:36:34,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:36:34,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403648713] [2022-11-20 12:36:34,079 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403648713] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:36:34,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [562921444] [2022-11-20 12:36:34,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:36:34,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:36:34,081 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08d27d4-e415-4aaf-af63-f84f1540c5f2/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:36:34,085 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08d27d4-e415-4aaf-af63-f84f1540c5f2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:36:34,124 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08d27d4-e415-4aaf-af63-f84f1540c5f2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 12:36:34,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:34,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 12:36:34,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:36:34,452 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 12:36:34,452 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:36:34,570 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 12:36:34,571 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [562921444] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:36:34,571 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:36:34,571 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-20 12:36:34,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751351487] [2022-11-20 12:36:34,574 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:36:34,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 12:36:34,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:36:34,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 12:36:34,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-20 12:36:34,592 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 281 out of 337 [2022-11-20 12:36:34,599 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 306 transitions, 700 flow. Second operand has 12 states, 12 states have (on average 283.6666666666667) internal successors, (3404), 12 states have internal predecessors, (3404), 0 states have call successors, (0), 0 states 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 12:36:34,599 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:36:34,599 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 281 of 337 [2022-11-20 12:36:34,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:36:35,452 INFO L130 PetriNetUnfolder]: 71/1057 cut-off events. [2022-11-20 12:36:35,453 INFO L131 PetriNetUnfolder]: For 53/53 co-relation queries the response was YES. [2022-11-20 12:36:35,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1335 conditions, 1057 events. 71/1057 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 5158 event pairs, 0 based on Foata normal form. 9/931 useless extension candidates. Maximal degree in co-relation 696. Up to 35 conditions per place. [2022-11-20 12:36:35,467 INFO L137 encePairwiseOnDemand]: 314/337 looper letters, 109 selfloop transitions, 62 changer transitions 0/425 dead transitions. [2022-11-20 12:36:35,467 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 425 transitions, 1382 flow [2022-11-20 12:36:35,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-20 12:36:35,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-20 12:36:35,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 5238 transitions. [2022-11-20 12:36:35,480 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8635014836795252 [2022-11-20 12:36:35,481 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 5238 transitions. [2022-11-20 12:36:35,481 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 5238 transitions. [2022-11-20 12:36:35,485 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:36:35,486 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 5238 transitions. [2022-11-20 12:36:35,501 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 291.0) internal successors, (5238), 18 states have internal predecessors, (5238), 0 states have call successors, (0), 0 states 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 12:36:35,516 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 337.0) internal successors, (6403), 19 states have internal predecessors, (6403), 0 states have call successors, (0), 0 states 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 12:36:35,522 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 337.0) internal successors, (6403), 19 states have internal predecessors, (6403), 0 states have call successors, (0), 0 states 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 12:36:35,522 INFO L175 Difference]: Start difference. First operand has 298 places, 306 transitions, 700 flow. Second operand 18 states and 5238 transitions. [2022-11-20 12:36:35,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 425 transitions, 1382 flow [2022-11-20 12:36:35,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 425 transitions, 1374 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 12:36:35,535 INFO L231 Difference]: Finished difference. Result has 312 places, 348 transitions, 1062 flow [2022-11-20 12:36:35,536 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=337, PETRI_DIFFERENCE_MINUEND_FLOW=692, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1062, PETRI_PLACES=312, PETRI_TRANSITIONS=348} [2022-11-20 12:36:35,537 INFO L288 CegarLoopForPetriNet]: 296 programPoint places, 16 predicate places. [2022-11-20 12:36:35,537 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 348 transitions, 1062 flow [2022-11-20 12:36:35,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 283.6666666666667) internal successors, (3404), 12 states have internal predecessors, (3404), 0 states have call successors, (0), 0 states 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 12:36:35,540 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:36:35,541 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:36:35,557 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08d27d4-e415-4aaf-af63-f84f1540c5f2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 12:36:35,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08d27d4-e415-4aaf-af63-f84f1540c5f2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:36:35,751 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2022-11-20 12:36:35,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:36:35,752 INFO L85 PathProgramCache]: Analyzing trace with hash 350397273, now seen corresponding path program 1 times [2022-11-20 12:36:35,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:36:35,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649553571] [2022-11-20 12:36:35,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:36:35,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:36:35,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:35,925 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 12:36:35,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:36:35,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649553571] [2022-11-20 12:36:35,926 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649553571] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:36:35,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1863760381] [2022-11-20 12:36:35,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:36:35,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:36:35,927 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08d27d4-e415-4aaf-af63-f84f1540c5f2/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:36:35,928 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08d27d4-e415-4aaf-af63-f84f1540c5f2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:36:35,951 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08d27d4-e415-4aaf-af63-f84f1540c5f2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 12:36:36,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:36,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 12:36:36,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:36:36,181 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 12:36:36,181 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:36:36,182 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1863760381] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:36:36,182 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:36:36,182 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-20 12:36:36,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498419504] [2022-11-20 12:36:36,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:36:36,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:36:36,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:36:36,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:36:36,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:36:36,195 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 281 out of 337 [2022-11-20 12:36:36,200 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 348 transitions, 1062 flow. Second operand has 6 states, 6 states have (on average 283.3333333333333) internal successors, (1700), 6 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 12:36:36,200 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:36:36,200 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 281 of 337 [2022-11-20 12:36:36,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:36:36,734 INFO L130 PetriNetUnfolder]: 71/1045 cut-off events. [2022-11-20 12:36:36,735 INFO L131 PetriNetUnfolder]: For 205/205 co-relation queries the response was YES. [2022-11-20 12:36:36,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1391 conditions, 1045 events. 71/1045 cut-off events. For 205/205 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 5064 event pairs, 0 based on Foata normal form. 12/922 useless extension candidates. Maximal degree in co-relation 1070. Up to 68 conditions per place. [2022-11-20 12:36:36,749 INFO L137 encePairwiseOnDemand]: 320/337 looper letters, 59 selfloop transitions, 43 changer transitions 0/356 dead transitions. [2022-11-20 12:36:36,750 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 356 transitions, 1237 flow [2022-11-20 12:36:36,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 12:36:36,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 12:36:36,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2039 transitions. [2022-11-20 12:36:36,755 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.864349300551081 [2022-11-20 12:36:36,756 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2039 transitions. [2022-11-20 12:36:36,756 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2039 transitions. [2022-11-20 12:36:36,757 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:36:36,758 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2039 transitions. [2022-11-20 12:36:36,763 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 291.2857142857143) internal successors, (2039), 7 states have internal predecessors, (2039), 0 states have call successors, (0), 0 states 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 12:36:36,769 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 337.0) internal successors, (2696), 8 states have internal predecessors, (2696), 0 states have call successors, (0), 0 states 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 12:36:36,771 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 337.0) internal successors, (2696), 8 states have internal predecessors, (2696), 0 states have call successors, (0), 0 states 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 12:36:36,771 INFO L175 Difference]: Start difference. First operand has 312 places, 348 transitions, 1062 flow. Second operand 7 states and 2039 transitions. [2022-11-20 12:36:36,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 356 transitions, 1237 flow [2022-11-20 12:36:36,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 356 transitions, 1121 flow, removed 41 selfloop flow, removed 5 redundant places. [2022-11-20 12:36:36,788 INFO L231 Difference]: Finished difference. Result has 306 places, 336 transitions, 951 flow [2022-11-20 12:36:36,789 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=337, PETRI_DIFFERENCE_MINUEND_FLOW=865, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=336, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=951, PETRI_PLACES=306, PETRI_TRANSITIONS=336} [2022-11-20 12:36:36,792 INFO L288 CegarLoopForPetriNet]: 296 programPoint places, 10 predicate places. [2022-11-20 12:36:36,792 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 336 transitions, 951 flow [2022-11-20 12:36:36,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 283.3333333333333) internal successors, (1700), 6 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 12:36:36,793 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:36:36,794 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:36:36,806 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08d27d4-e415-4aaf-af63-f84f1540c5f2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 12:36:37,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08d27d4-e415-4aaf-af63-f84f1540c5f2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-11-20 12:36:37,001 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2022-11-20 12:36:37,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:36:37,001 INFO L85 PathProgramCache]: Analyzing trace with hash 237113411, now seen corresponding path program 2 times [2022-11-20 12:36:37,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:36:37,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290243284] [2022-11-20 12:36:37,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:36:37,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:36:37,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:37,335 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 12:36:37,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:36:37,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290243284] [2022-11-20 12:36:37,336 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290243284] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:36:37,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [859401540] [2022-11-20 12:36:37,337 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:36:37,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:36:37,337 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08d27d4-e415-4aaf-af63-f84f1540c5f2/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:36:37,339 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08d27d4-e415-4aaf-af63-f84f1540c5f2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:36:37,368 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08d27d4-e415-4aaf-af63-f84f1540c5f2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 12:36:37,479 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 12:36:37,480 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:36:37,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 12:36:37,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:36:37,722 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 12:36:37,722 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:36:37,958 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 12:36:37,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [859401540] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:36:37,959 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:36:37,959 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2022-11-20 12:36:37,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449217835] [2022-11-20 12:36:37,960 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:36:37,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-20 12:36:37,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:36:37,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-20 12:36:37,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-11-20 12:36:37,970 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 337 [2022-11-20 12:36:37,976 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 336 transitions, 951 flow. Second operand has 18 states, 18 states have (on average 250.61111111111111) internal successors, (4511), 18 states have internal predecessors, (4511), 0 states have call successors, (0), 0 states 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 12:36:37,976 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:36:37,976 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 337 [2022-11-20 12:36:37,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:36:41,227 INFO L130 PetriNetUnfolder]: 897/4166 cut-off events. [2022-11-20 12:36:41,227 INFO L131 PetriNetUnfolder]: For 406/406 co-relation queries the response was YES. [2022-11-20 12:36:41,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6082 conditions, 4166 events. 897/4166 cut-off events. For 406/406 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 34270 event pairs, 455 based on Foata normal form. 6/3255 useless extension candidates. Maximal degree in co-relation 4650. Up to 232 conditions per place. [2022-11-20 12:36:41,314 INFO L137 encePairwiseOnDemand]: 309/337 looper letters, 248 selfloop transitions, 97 changer transitions 0/565 dead transitions. [2022-11-20 12:36:41,314 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 565 transitions, 2236 flow [2022-11-20 12:36:41,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-11-20 12:36:41,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2022-11-20 12:36:41,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 12454 transitions. [2022-11-20 12:36:41,344 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7541936655968026 [2022-11-20 12:36:41,344 INFO L72 ComplementDD]: Start complementDD. Operand 49 states and 12454 transitions. [2022-11-20 12:36:41,344 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 12454 transitions. [2022-11-20 12:36:41,354 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:36:41,354 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 49 states and 12454 transitions. [2022-11-20 12:36:41,387 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 50 states, 49 states have (on average 254.16326530612244) internal successors, (12454), 49 states have internal predecessors, (12454), 0 states have call successors, (0), 0 states 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 12:36:41,424 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 50 states, 50 states have (on average 337.0) internal successors, (16850), 50 states have internal predecessors, (16850), 0 states have call successors, (0), 0 states 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 12:36:41,433 INFO L81 ComplementDD]: Finished complementDD. Result has 50 states, 50 states have (on average 337.0) internal successors, (16850), 50 states have internal predecessors, (16850), 0 states have call successors, (0), 0 states 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 12:36:41,433 INFO L175 Difference]: Start difference. First operand has 306 places, 336 transitions, 951 flow. Second operand 49 states and 12454 transitions. [2022-11-20 12:36:41,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 565 transitions, 2236 flow [2022-11-20 12:36:41,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 565 transitions, 2167 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-20 12:36:41,448 INFO L231 Difference]: Finished difference. Result has 352 places, 376 transitions, 1294 flow [2022-11-20 12:36:41,449 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=337, PETRI_DIFFERENCE_MINUEND_FLOW=887, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=335, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=49, PETRI_FLOW=1294, PETRI_PLACES=352, PETRI_TRANSITIONS=376} [2022-11-20 12:36:41,449 INFO L288 CegarLoopForPetriNet]: 296 programPoint places, 56 predicate places. [2022-11-20 12:36:41,450 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 376 transitions, 1294 flow [2022-11-20 12:36:41,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 250.61111111111111) internal successors, (4511), 18 states have internal predecessors, (4511), 0 states have call successors, (0), 0 states 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 12:36:41,452 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:36:41,452 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:36:41,467 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08d27d4-e415-4aaf-af63-f84f1540c5f2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 12:36:41,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e08d27d4-e415-4aaf-af63-f84f1540c5f2/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:36:41,659 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2022-11-20 12:36:41,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:36:41,660 INFO L85 PathProgramCache]: Analyzing trace with hash -776043482, now seen corresponding path program 1 times [2022-11-20 12:36:41,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:36:41,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823570212] [2022-11-20 12:36:41,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:36:41,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:36:41,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:42,175 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 12:36:42,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:36:42,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823570212] [2022-11-20 12:36:42,175 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823570212] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:36:42,176 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:36:42,176 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 12:36:42,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124793975] [2022-11-20 12:36:42,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:36:42,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-20 12:36:42,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:36:42,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-20 12:36:42,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-11-20 12:36:42,181 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 227 out of 337 [2022-11-20 12:36:42,184 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 376 transitions, 1294 flow. Second operand has 11 states, 11 states have (on average 231.45454545454547) internal successors, (2546), 11 states have internal predecessors, (2546), 0 states have call successors, (0), 0 states 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 12:36:42,184 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:36:42,185 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 227 of 337 [2022-11-20 12:36:42,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:36:54,772 INFO L130 PetriNetUnfolder]: 19839/49441 cut-off events. [2022-11-20 12:36:54,772 INFO L131 PetriNetUnfolder]: For 3501/3501 co-relation queries the response was YES. [2022-11-20 12:36:55,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78750 conditions, 49441 events. 19839/49441 cut-off events. For 3501/3501 co-relation queries the response was YES. Maximal size of possible extension queue 900. Compared 560832 event pairs, 11410 based on Foata normal form. 0/34811 useless extension candidates. Maximal degree in co-relation 67471. Up to 12848 conditions per place. [2022-11-20 12:36:55,361 INFO L137 encePairwiseOnDemand]: 319/337 looper letters, 234 selfloop transitions, 35 changer transitions 0/496 dead transitions. [2022-11-20 12:36:55,361 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 496 transitions, 2315 flow [2022-11-20 12:36:55,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-20 12:36:55,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-20 12:36:55,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 4026 transitions. [2022-11-20 12:36:55,372 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7027404433583523 [2022-11-20 12:36:55,373 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 4026 transitions. [2022-11-20 12:36:55,373 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 4026 transitions. [2022-11-20 12:36:55,376 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:36:55,376 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 4026 transitions. [2022-11-20 12:36:55,386 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 236.8235294117647) internal successors, (4026), 17 states have internal predecessors, (4026), 0 states have call successors, (0), 0 states 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 12:36:55,398 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 337.0) internal successors, (6066), 18 states have internal predecessors, (6066), 0 states have call successors, (0), 0 states 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 12:36:55,401 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 337.0) internal successors, (6066), 18 states have internal predecessors, (6066), 0 states have call successors, (0), 0 states 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 12:36:55,401 INFO L175 Difference]: Start difference. First operand has 352 places, 376 transitions, 1294 flow. Second operand 17 states and 4026 transitions. [2022-11-20 12:36:55,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 496 transitions, 2315 flow [2022-11-20 12:36:55,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 353 places, 496 transitions, 2134 flow, removed 27 selfloop flow, removed 15 redundant places. [2022-11-20 12:36:55,422 INFO L231 Difference]: Finished difference. Result has 362 places, 390 transitions, 1373 flow [2022-11-20 12:36:55,423 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=337, PETRI_DIFFERENCE_MINUEND_FLOW=1171, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=376, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=341, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1373, PETRI_PLACES=362, PETRI_TRANSITIONS=390} [2022-11-20 12:36:55,426 INFO L288 CegarLoopForPetriNet]: 296 programPoint places, 66 predicate places. [2022-11-20 12:36:55,426 INFO L495 AbstractCegarLoop]: Abstraction has has 362 places, 390 transitions, 1373 flow [2022-11-20 12:36:55,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 231.45454545454547) internal successors, (2546), 11 states have internal predecessors, (2546), 0 states have call successors, (0), 0 states 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 12:36:55,428 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:36:55,428 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:36:55,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 12:36:55,429 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2022-11-20 12:36:55,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:36:55,430 INFO L85 PathProgramCache]: Analyzing trace with hash 1712456669, now seen corresponding path program 1 times [2022-11-20 12:36:55,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:36:55,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582427195] [2022-11-20 12:36:55,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:36:55,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:36:55,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:55,755 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 12:36:55,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:36:55,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582427195] [2022-11-20 12:36:55,755 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582427195] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:36:55,755 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:36:55,755 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 12:36:55,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790628254] [2022-11-20 12:36:55,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:36:55,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 12:36:55,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:36:55,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 12:36:55,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:36:55,760 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 253 out of 337 [2022-11-20 12:36:55,762 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 390 transitions, 1373 flow. Second operand has 8 states, 8 states have (on average 257.375) internal successors, (2059), 8 states have internal predecessors, (2059), 0 states have call successors, (0), 0 states 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 12:36:55,762 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:36:55,763 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 253 of 337 [2022-11-20 12:36:55,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:37:13,731 INFO L130 PetriNetUnfolder]: 33573/84027 cut-off events. [2022-11-20 12:37:13,731 INFO L131 PetriNetUnfolder]: For 8092/8092 co-relation queries the response was YES. [2022-11-20 12:37:14,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134572 conditions, 84027 events. 33573/84027 cut-off events. For 8092/8092 co-relation queries the response was YES. Maximal size of possible extension queue 1504. Compared 1030721 event pairs, 19103 based on Foata normal form. 952/62236 useless extension candidates. Maximal degree in co-relation 115281. Up to 25536 conditions per place. [2022-11-20 12:37:14,939 INFO L137 encePairwiseOnDemand]: 322/337 looper letters, 165 selfloop transitions, 37 changer transitions 0/446 dead transitions. [2022-11-20 12:37:14,940 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 446 transitions, 1973 flow [2022-11-20 12:37:14,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 12:37:14,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-20 12:37:14,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3147 transitions. [2022-11-20 12:37:14,953 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7781899109792285 [2022-11-20 12:37:14,953 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3147 transitions. [2022-11-20 12:37:14,954 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3147 transitions. [2022-11-20 12:37:14,956 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:37:14,956 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3147 transitions. [2022-11-20 12:37:14,965 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 262.25) internal successors, (3147), 12 states have internal predecessors, (3147), 0 states have call successors, (0), 0 states 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 12:37:14,974 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 337.0) internal successors, (4381), 13 states have internal predecessors, (4381), 0 states have call successors, (0), 0 states 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 12:37:14,976 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 337.0) internal successors, (4381), 13 states have internal predecessors, (4381), 0 states have call successors, (0), 0 states 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 12:37:14,976 INFO L175 Difference]: Start difference. First operand has 362 places, 390 transitions, 1373 flow. Second operand 12 states and 3147 transitions. [2022-11-20 12:37:14,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 373 places, 446 transitions, 1973 flow [2022-11-20 12:37:14,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 369 places, 446 transitions, 1951 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 12:37:15,008 INFO L231 Difference]: Finished difference. Result has 371 places, 394 transitions, 1479 flow [2022-11-20 12:37:15,009 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=337, PETRI_DIFFERENCE_MINUEND_FLOW=1351, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=390, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=355, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1479, PETRI_PLACES=371, PETRI_TRANSITIONS=394} [2022-11-20 12:37:15,010 INFO L288 CegarLoopForPetriNet]: 296 programPoint places, 75 predicate places. [2022-11-20 12:37:15,011 INFO L495 AbstractCegarLoop]: Abstraction has has 371 places, 394 transitions, 1479 flow [2022-11-20 12:37:15,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 257.375) internal successors, (2059), 8 states have internal predecessors, (2059), 0 states have call successors, (0), 0 states 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 12:37:15,012 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:37:15,012 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:37:15,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 12:37:15,013 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2022-11-20 12:37:15,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:37:15,013 INFO L85 PathProgramCache]: Analyzing trace with hash 411832932, now seen corresponding path program 1 times [2022-11-20 12:37:15,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:37:15,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148210247] [2022-11-20 12:37:15,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:37:15,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:37:15,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:37:15,131 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 12:37:15,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:37:15,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148210247] [2022-11-20 12:37:15,132 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148210247] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:37:15,132 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:37:15,132 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:37:15,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239320645] [2022-11-20 12:37:15,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:37:15,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:37:15,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:37:15,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:37:15,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:37:15,135 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 303 out of 337 [2022-11-20 12:37:15,137 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 371 places, 394 transitions, 1479 flow. Second operand has 4 states, 4 states have (on average 304.75) internal successors, (1219), 4 states have internal predecessors, (1219), 0 states have call successors, (0), 0 states 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 12:37:15,137 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:37:15,137 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 303 of 337 [2022-11-20 12:37:15,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:37:18,445 INFO L130 PetriNetUnfolder]: 2444/13859 cut-off events. [2022-11-20 12:37:18,445 INFO L131 PetriNetUnfolder]: For 1145/1145 co-relation queries the response was YES. [2022-11-20 12:37:18,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20983 conditions, 13859 events. 2444/13859 cut-off events. For 1145/1145 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 165214 event pairs, 672 based on Foata normal form. 0/11871 useless extension candidates. Maximal degree in co-relation 17919. Up to 2073 conditions per place. [2022-11-20 12:37:18,695 INFO L137 encePairwiseOnDemand]: 331/337 looper letters, 34 selfloop transitions, 4 changer transitions 0/413 dead transitions. [2022-11-20 12:37:18,695 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 413 transitions, 1604 flow [2022-11-20 12:37:18,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:37:18,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 12:37:18,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1555 transitions. [2022-11-20 12:37:18,706 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9228486646884273 [2022-11-20 12:37:18,706 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1555 transitions. [2022-11-20 12:37:18,706 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1555 transitions. [2022-11-20 12:37:18,707 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:37:18,707 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1555 transitions. [2022-11-20 12:37:18,711 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 311.0) internal successors, (1555), 5 states have internal predecessors, (1555), 0 states have call successors, (0), 0 states 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 12:37:18,715 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 337.0) internal successors, (2022), 6 states have internal predecessors, (2022), 0 states have call successors, (0), 0 states 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 12:37:18,716 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 337.0) internal successors, (2022), 6 states have internal predecessors, (2022), 0 states have call successors, (0), 0 states 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 12:37:18,716 INFO L175 Difference]: Start difference. First operand has 371 places, 394 transitions, 1479 flow. Second operand 5 states and 1555 transitions. [2022-11-20 12:37:18,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 413 transitions, 1604 flow [2022-11-20 12:37:18,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 369 places, 413 transitions, 1578 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-20 12:37:18,739 INFO L231 Difference]: Finished difference. Result has 372 places, 397 transitions, 1483 flow [2022-11-20 12:37:18,740 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=337, PETRI_DIFFERENCE_MINUEND_FLOW=1453, PETRI_DIFFERENCE_MINUEND_PLACES=365, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=394, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=390, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1483, PETRI_PLACES=372, PETRI_TRANSITIONS=397} [2022-11-20 12:37:18,741 INFO L288 CegarLoopForPetriNet]: 296 programPoint places, 76 predicate places. [2022-11-20 12:37:18,742 INFO L495 AbstractCegarLoop]: Abstraction has has 372 places, 397 transitions, 1483 flow [2022-11-20 12:37:18,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 304.75) internal successors, (1219), 4 states have internal predecessors, (1219), 0 states have call successors, (0), 0 states 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 12:37:18,742 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:37:18,743 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:37:18,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 12:37:18,743 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2022-11-20 12:37:18,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:37:18,744 INFO L85 PathProgramCache]: Analyzing trace with hash 1823955381, now seen corresponding path program 1 times [2022-11-20 12:37:18,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:37:18,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999640331] [2022-11-20 12:37:18,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:37:18,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:37:18,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:37:19,226 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 12:37:19,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:37:19,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999640331] [2022-11-20 12:37:19,228 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999640331] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:37:19,228 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:37:19,228 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 12:37:19,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552404278] [2022-11-20 12:37:19,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:37:19,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-20 12:37:19,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:37:19,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-20 12:37:19,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-11-20 12:37:19,237 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 227 out of 337 [2022-11-20 12:37:19,239 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 397 transitions, 1483 flow. Second operand has 11 states, 11 states have (on average 231.54545454545453) internal successors, (2547), 11 states have internal predecessors, (2547), 0 states have call successors, (0), 0 states 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 12:37:19,239 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:37:19,239 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 227 of 337 [2022-11-20 12:37:19,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand