./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/parallel-parallel-sum-2.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3490cb-2a27-4a94-ad25-ef36eb6bd732/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3490cb-2a27-4a94-ad25-ef36eb6bd732/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3490cb-2a27-4a94-ad25-ef36eb6bd732/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3490cb-2a27-4a94-ad25-ef36eb6bd732/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-parallel-sum-2.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3490cb-2a27-4a94-ad25-ef36eb6bd732/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3490cb-2a27-4a94-ad25-ef36eb6bd732/bin/uautomizer-TMbwUNV5ro --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c0b350b5c7953744a22c8334b20c4dc8efdff09f1ecb36de8b1744d1e20f0260 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 19:31:52,484 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 19:31:52,486 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 19:31:52,524 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 19:31:52,524 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 19:31:52,526 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 19:31:52,527 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 19:31:52,530 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 19:31:52,532 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 19:31:52,533 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 19:31:52,534 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 19:31:52,536 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 19:31:52,536 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 19:31:52,537 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 19:31:52,539 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 19:31:52,540 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 19:31:52,541 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 19:31:52,543 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 19:31:52,545 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 19:31:52,547 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 19:31:52,549 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 19:31:52,553 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 19:31:52,554 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 19:31:52,555 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 19:31:52,560 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 19:31:52,560 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 19:31:52,561 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 19:31:52,562 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 19:31:52,562 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 19:31:52,564 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 19:31:52,564 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 19:31:52,565 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 19:31:52,566 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 19:31:52,575 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 19:31:52,581 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 19:31:52,582 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 19:31:52,583 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 19:31:52,583 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 19:31:52,583 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 19:31:52,585 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 19:31:52,585 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 19:31:52,586 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3490cb-2a27-4a94-ad25-ef36eb6bd732/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-18 19:31:52,615 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 19:31:52,615 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 19:31:52,616 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 19:31:52,616 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 19:31:52,617 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 19:31:52,617 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 19:31:52,618 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 19:31:52,618 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 19:31:52,618 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 19:31:52,619 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 19:31:52,619 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 19:31:52,619 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 19:31:52,620 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 19:31:52,620 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 19:31:52,620 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 19:31:52,620 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 19:31:52,621 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 19:31:52,621 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 19:31:52,621 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-18 19:31:52,621 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 19:31:52,622 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 19:31:52,622 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 19:31:52,622 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 19:31:52,623 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 19:31:52,623 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 19:31:52,623 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 19:31:52,623 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:31:52,624 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 19:31:52,624 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 19:31:52,624 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 19:31:52,624 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 19:31:52,625 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 19:31:52,625 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 19:31:52,625 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 19:31:52,625 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 19:31:52,626 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_bb3490cb-2a27-4a94-ad25-ef36eb6bd732/bin/uautomizer-TMbwUNV5ro/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3490cb-2a27-4a94-ad25-ef36eb6bd732/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c0b350b5c7953744a22c8334b20c4dc8efdff09f1ecb36de8b1744d1e20f0260 [2022-11-18 19:31:52,911 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 19:31:52,946 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 19:31:52,949 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 19:31:52,951 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 19:31:52,952 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 19:31:52,953 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3490cb-2a27-4a94-ad25-ef36eb6bd732/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/weaver/parallel-parallel-sum-2.wvr.c [2022-11-18 19:31:53,047 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3490cb-2a27-4a94-ad25-ef36eb6bd732/bin/uautomizer-TMbwUNV5ro/data/b340a816e/7c0f0c48730049cba33232a4cde16bfc/FLAGb2351b731 [2022-11-18 19:31:53,613 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 19:31:53,613 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3490cb-2a27-4a94-ad25-ef36eb6bd732/sv-benchmarks/c/weaver/parallel-parallel-sum-2.wvr.c [2022-11-18 19:31:53,622 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3490cb-2a27-4a94-ad25-ef36eb6bd732/bin/uautomizer-TMbwUNV5ro/data/b340a816e/7c0f0c48730049cba33232a4cde16bfc/FLAGb2351b731 [2022-11-18 19:31:53,929 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3490cb-2a27-4a94-ad25-ef36eb6bd732/bin/uautomizer-TMbwUNV5ro/data/b340a816e/7c0f0c48730049cba33232a4cde16bfc [2022-11-18 19:31:53,932 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 19:31:53,934 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 19:31:53,936 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 19:31:53,936 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 19:31:53,940 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 19:31:53,941 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:31:53" (1/1) ... [2022-11-18 19:31:53,942 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28394060 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:53, skipping insertion in model container [2022-11-18 19:31:53,942 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:31:53" (1/1) ... [2022-11-18 19:31:53,950 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 19:31:53,973 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 19:31:54,229 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3490cb-2a27-4a94-ad25-ef36eb6bd732/sv-benchmarks/c/weaver/parallel-parallel-sum-2.wvr.c[4225,4238] [2022-11-18 19:31:54,239 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:31:54,248 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 19:31:54,289 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3490cb-2a27-4a94-ad25-ef36eb6bd732/sv-benchmarks/c/weaver/parallel-parallel-sum-2.wvr.c[4225,4238] [2022-11-18 19:31:54,296 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:31:54,314 INFO L208 MainTranslator]: Completed translation [2022-11-18 19:31:54,315 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:54 WrapperNode [2022-11-18 19:31:54,315 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 19:31:54,317 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 19:31:54,317 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 19:31:54,317 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 19:31:54,327 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:54" (1/1) ... [2022-11-18 19:31:54,340 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:54" (1/1) ... [2022-11-18 19:31:54,394 INFO L138 Inliner]: procedures = 29, calls = 88, calls flagged for inlining = 22, calls inlined = 32, statements flattened = 482 [2022-11-18 19:31:54,403 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 19:31:54,404 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 19:31:54,404 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 19:31:54,405 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 19:31:54,417 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:54" (1/1) ... [2022-11-18 19:31:54,418 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:54" (1/1) ... [2022-11-18 19:31:54,444 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:54" (1/1) ... [2022-11-18 19:31:54,444 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:54" (1/1) ... [2022-11-18 19:31:54,470 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:54" (1/1) ... [2022-11-18 19:31:54,477 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:54" (1/1) ... [2022-11-18 19:31:54,480 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:54" (1/1) ... [2022-11-18 19:31:54,483 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:54" (1/1) ... [2022-11-18 19:31:54,500 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 19:31:54,507 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 19:31:54,507 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 19:31:54,507 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 19:31:54,509 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:54" (1/1) ... [2022-11-18 19:31:54,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:31:54,534 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3490cb-2a27-4a94-ad25-ef36eb6bd732/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:31:54,551 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3490cb-2a27-4a94-ad25-ef36eb6bd732/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 19:31:54,587 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3490cb-2a27-4a94-ad25-ef36eb6bd732/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 19:31:54,623 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 19:31:54,623 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 19:31:54,623 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 19:31:54,623 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 19:31:54,623 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-18 19:31:54,624 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-18 19:31:54,624 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-18 19:31:54,624 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-18 19:31:54,624 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-18 19:31:54,624 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-18 19:31:54,624 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-11-18 19:31:54,624 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-11-18 19:31:54,625 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 19:31:54,625 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2022-11-18 19:31:54,625 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2022-11-18 19:31:54,625 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2022-11-18 19:31:54,625 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2022-11-18 19:31:54,626 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-18 19:31:54,626 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-18 19:31:54,626 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 19:31:54,626 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 19:31:54,626 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 19:31:54,627 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 19:31:54,629 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 19:31:54,843 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 19:31:54,845 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 19:31:55,906 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 19:31:56,806 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 19:31:56,806 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2022-11-18 19:31:56,811 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:31:56 BoogieIcfgContainer [2022-11-18 19:31:56,812 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 19:31:56,815 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 19:31:56,816 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 19:31:56,820 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 19:31:56,820 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 07:31:53" (1/3) ... [2022-11-18 19:31:56,822 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1237a6f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:31:56, skipping insertion in model container [2022-11-18 19:31:56,822 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:54" (2/3) ... [2022-11-18 19:31:56,822 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1237a6f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:31:56, skipping insertion in model container [2022-11-18 19:31:56,822 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:31:56" (3/3) ... [2022-11-18 19:31:56,825 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-parallel-sum-2.wvr.c [2022-11-18 19:31:56,839 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 19:31:56,853 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 19:31:56,853 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 48 error locations. [2022-11-18 19:31:56,853 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 19:31:57,295 INFO L144 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2022-11-18 19:31:57,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 370 places, 374 transitions, 820 flow [2022-11-18 19:31:57,600 INFO L130 PetriNetUnfolder]: 21/316 cut-off events. [2022-11-18 19:31:57,600 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-18 19:31:57,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 345 conditions, 316 events. 21/316 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 556 event pairs, 0 based on Foata normal form. 0/247 useless extension candidates. Maximal degree in co-relation 263. Up to 3 conditions per place. [2022-11-18 19:31:57,612 INFO L82 GeneralOperation]: Start removeDead. Operand has 370 places, 374 transitions, 820 flow [2022-11-18 19:31:57,627 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 296 places, 297 transitions, 639 flow [2022-11-18 19:31:57,644 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 19:31:57,656 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;@7ff2ebbc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 19:31:57,656 INFO L358 AbstractCegarLoop]: Starting to check reachability of 102 error locations. [2022-11-18 19:31:57,674 INFO L130 PetriNetUnfolder]: 1/72 cut-off events. [2022-11-18 19:31:57,675 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 19:31:57,676 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:31:57,677 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] [2022-11-18 19:31:57,678 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 99 more)] === [2022-11-18 19:31:57,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:31:57,684 INFO L85 PathProgramCache]: Analyzing trace with hash 503389698, now seen corresponding path program 1 times [2022-11-18 19:31:57,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:31:57,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147943159] [2022-11-18 19:31:57,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:31:57,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:31:57,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:31:58,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:31:58,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:31:58,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147943159] [2022-11-18 19:31:58,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147943159] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:31:58,180 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:31:58,180 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 19:31:58,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395468352] [2022-11-18 19:31:58,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:31:58,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:31:58,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:31:58,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:31:58,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:31:58,225 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 235 out of 378 [2022-11-18 19:31:58,231 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 297 transitions, 639 flow. Second operand has 5 states, 5 states have (on average 236.4) internal successors, (1182), 5 states have internal predecessors, (1182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:31:58,231 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:31:58,231 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 235 of 378 [2022-11-18 19:31:58,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:32:07,983 INFO L130 PetriNetUnfolder]: 15409/21358 cut-off events. [2022-11-18 19:32:07,983 INFO L131 PetriNetUnfolder]: For 4925/4959 co-relation queries the response was YES. [2022-11-18 19:32:08,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46806 conditions, 21358 events. 15409/21358 cut-off events. For 4925/4959 co-relation queries the response was YES. Maximal size of possible extension queue 1740. Compared 139417 event pairs, 11952 based on Foata normal form. 2437/10156 useless extension candidates. Maximal degree in co-relation 46085. Up to 20612 conditions per place. [2022-11-18 19:32:08,353 INFO L137 encePairwiseOnDemand]: 345/378 looper letters, 72 selfloop transitions, 5 changer transitions 4/269 dead transitions. [2022-11-18 19:32:08,354 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 269 transitions, 745 flow [2022-11-18 19:32:08,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:32:08,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 19:32:08,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1284 transitions. [2022-11-18 19:32:08,383 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6793650793650794 [2022-11-18 19:32:08,384 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1284 transitions. [2022-11-18 19:32:08,385 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1284 transitions. [2022-11-18 19:32:08,390 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:32:08,394 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1284 transitions. [2022-11-18 19:32:08,402 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 256.8) internal successors, (1284), 5 states have internal predecessors, (1284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:08,424 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 378.0) internal successors, (2268), 6 states have internal predecessors, (2268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:08,427 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 378.0) internal successors, (2268), 6 states have internal predecessors, (2268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:08,429 INFO L175 Difference]: Start difference. First operand has 296 places, 297 transitions, 639 flow. Second operand 5 states and 1284 transitions. [2022-11-18 19:32:08,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 269 transitions, 745 flow [2022-11-18 19:32:08,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 269 transitions, 716 flow, removed 0 selfloop flow, removed 11 redundant places. [2022-11-18 19:32:08,457 INFO L231 Difference]: Finished difference. Result has 272 places, 265 transitions, 556 flow [2022-11-18 19:32:08,460 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=378, PETRI_DIFFERENCE_MINUEND_FLOW=554, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=556, PETRI_PLACES=272, PETRI_TRANSITIONS=265} [2022-11-18 19:32:08,467 INFO L288 CegarLoopForPetriNet]: 296 programPoint places, -24 predicate places. [2022-11-18 19:32:08,468 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 265 transitions, 556 flow [2022-11-18 19:32:08,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 236.4) internal successors, (1182), 5 states have internal predecessors, (1182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:08,469 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:32:08,470 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] [2022-11-18 19:32:08,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 19:32:08,471 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 99 more)] === [2022-11-18 19:32:08,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:32:08,473 INFO L85 PathProgramCache]: Analyzing trace with hash -1574787076, now seen corresponding path program 1 times [2022-11-18 19:32:08,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:32:08,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535122551] [2022-11-18 19:32:08,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:32:08,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:32:08,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:08,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:32:08,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:32:08,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535122551] [2022-11-18 19:32:08,667 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535122551] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:32:08,667 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:32:08,667 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:32:08,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218372162] [2022-11-18 19:32:08,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:32:08,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:32:08,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:32:08,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:32:08,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:32:08,672 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 378 [2022-11-18 19:32:08,674 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 265 transitions, 556 flow. Second operand has 4 states, 4 states have (on average 258.0) internal successors, (1032), 4 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:08,674 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:32:08,674 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 378 [2022-11-18 19:32:08,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:32:15,532 INFO L130 PetriNetUnfolder]: 15409/21353 cut-off events. [2022-11-18 19:32:15,533 INFO L131 PetriNetUnfolder]: For 1225/1259 co-relation queries the response was YES. [2022-11-18 19:32:15,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43256 conditions, 21353 events. 15409/21353 cut-off events. For 1225/1259 co-relation queries the response was YES. Maximal size of possible extension queue 1740. Compared 138984 event pairs, 11952 based on Foata normal form. 0/7719 useless extension candidates. Maximal degree in co-relation 43173. Up to 20598 conditions per place. [2022-11-18 19:32:15,819 INFO L137 encePairwiseOnDemand]: 374/378 looper letters, 61 selfloop transitions, 3 changer transitions 0/264 dead transitions. [2022-11-18 19:32:15,820 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 264 transitions, 682 flow [2022-11-18 19:32:15,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 19:32:15,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 19:32:15,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1089 transitions. [2022-11-18 19:32:15,824 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7202380952380952 [2022-11-18 19:32:15,824 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1089 transitions. [2022-11-18 19:32:15,824 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1089 transitions. [2022-11-18 19:32:15,826 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:32:15,826 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1089 transitions. [2022-11-18 19:32:15,829 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 272.25) internal successors, (1089), 4 states have internal predecessors, (1089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:15,832 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 378.0) internal successors, (1890), 5 states have internal predecessors, (1890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:15,834 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 378.0) internal successors, (1890), 5 states have internal predecessors, (1890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:15,834 INFO L175 Difference]: Start difference. First operand has 272 places, 265 transitions, 556 flow. Second operand 4 states and 1089 transitions. [2022-11-18 19:32:15,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 264 transitions, 682 flow [2022-11-18 19:32:15,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 264 transitions, 672 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 19:32:15,843 INFO L231 Difference]: Finished difference. Result has 266 places, 264 transitions, 550 flow [2022-11-18 19:32:15,844 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=378, PETRI_DIFFERENCE_MINUEND_FLOW=544, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=550, PETRI_PLACES=266, PETRI_TRANSITIONS=264} [2022-11-18 19:32:15,845 INFO L288 CegarLoopForPetriNet]: 296 programPoint places, -30 predicate places. [2022-11-18 19:32:15,846 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 264 transitions, 550 flow [2022-11-18 19:32:15,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 258.0) internal successors, (1032), 4 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:15,847 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:32:15,847 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:32:15,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 19:32:15,848 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 99 more)] === [2022-11-18 19:32:15,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:32:15,849 INFO L85 PathProgramCache]: Analyzing trace with hash 678779835, now seen corresponding path program 1 times [2022-11-18 19:32:15,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:32:15,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681544476] [2022-11-18 19:32:15,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:32:15,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:32:15,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:16,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:32:16,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:32:16,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681544476] [2022-11-18 19:32:16,310 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681544476] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:32:16,310 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:32:16,310 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:32:16,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326529883] [2022-11-18 19:32:16,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:32:16,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:32:16,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:32:16,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:32:16,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:32:16,315 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 259 out of 378 [2022-11-18 19:32:16,317 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 264 transitions, 550 flow. Second operand has 4 states, 4 states have (on average 260.5) internal successors, (1042), 4 states have internal predecessors, (1042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:16,317 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:32:16,318 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 259 of 378 [2022-11-18 19:32:16,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:32:28,217 INFO L130 PetriNetUnfolder]: 30247/41713 cut-off events. [2022-11-18 19:32:28,217 INFO L131 PetriNetUnfolder]: For 2412/2476 co-relation queries the response was YES. [2022-11-18 19:32:28,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84619 conditions, 41713 events. 30247/41713 cut-off events. For 2412/2476 co-relation queries the response was YES. Maximal size of possible extension queue 2371. Compared 289067 event pairs, 23430 based on Foata normal form. 0/14815 useless extension candidates. Maximal degree in co-relation 84549. Up to 20176 conditions per place. [2022-11-18 19:32:28,678 INFO L137 encePairwiseOnDemand]: 372/378 looper letters, 122 selfloop transitions, 4 changer transitions 0/325 dead transitions. [2022-11-18 19:32:28,678 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 325 transitions, 940 flow [2022-11-18 19:32:28,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:32:28,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 19:32:28,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1423 transitions. [2022-11-18 19:32:28,683 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7529100529100529 [2022-11-18 19:32:28,683 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1423 transitions. [2022-11-18 19:32:28,683 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1423 transitions. [2022-11-18 19:32:28,684 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:32:28,684 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1423 transitions. [2022-11-18 19:32:28,688 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 284.6) internal successors, (1423), 5 states have internal predecessors, (1423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:28,693 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 378.0) internal successors, (2268), 6 states have internal predecessors, (2268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:28,695 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 378.0) internal successors, (2268), 6 states have internal predecessors, (2268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:28,695 INFO L175 Difference]: Start difference. First operand has 266 places, 264 transitions, 550 flow. Second operand 5 states and 1423 transitions. [2022-11-18 19:32:28,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 325 transitions, 940 flow [2022-11-18 19:32:28,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 325 transitions, 934 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 19:32:28,702 INFO L231 Difference]: Finished difference. Result has 270 places, 267 transitions, 574 flow [2022-11-18 19:32:28,703 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=378, PETRI_DIFFERENCE_MINUEND_FLOW=544, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=574, PETRI_PLACES=270, PETRI_TRANSITIONS=267} [2022-11-18 19:32:28,705 INFO L288 CegarLoopForPetriNet]: 296 programPoint places, -26 predicate places. [2022-11-18 19:32:28,706 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 267 transitions, 574 flow [2022-11-18 19:32:28,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 260.5) internal successors, (1042), 4 states have internal predecessors, (1042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:28,707 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:32:28,710 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:32:28,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 19:32:28,711 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 99 more)] === [2022-11-18 19:32:28,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:32:28,712 INFO L85 PathProgramCache]: Analyzing trace with hash 4131572, now seen corresponding path program 1 times [2022-11-18 19:32:28,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:32:28,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127733540] [2022-11-18 19:32:28,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:32:28,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:32:28,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:28,922 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:32:28,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:32:28,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127733540] [2022-11-18 19:32:28,923 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127733540] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:32:28,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [812932529] [2022-11-18 19:32:28,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:32:28,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:32:28,924 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3490cb-2a27-4a94-ad25-ef36eb6bd732/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:32:28,928 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3490cb-2a27-4a94-ad25-ef36eb6bd732/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:32:28,961 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb3490cb-2a27-4a94-ad25-ef36eb6bd732/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 19:32:29,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:29,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 19:32:29,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:32:29,354 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:32:29,355 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:32:29,434 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:32:29,434 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [812932529] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:32:29,435 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:32:29,435 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-18 19:32:29,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477524498] [2022-11-18 19:32:29,435 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:32:29,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 19:32:29,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:32:29,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 19:32:29,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-18 19:32:29,440 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 259 out of 378 [2022-11-18 19:32:29,445 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 267 transitions, 574 flow. Second operand has 12 states, 12 states have (on average 261.6666666666667) internal successors, (3140), 12 states have internal predecessors, (3140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:29,445 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:32:29,445 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 259 of 378 [2022-11-18 19:32:29,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand