./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/parallel-bakery-2.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability 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_d606a954-fe55-4eae-b3ae-869d927ade2d/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d606a954-fe55-4eae-b3ae-869d927ade2d/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_d606a954-fe55-4eae-b3ae-869d927ade2d/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d606a954-fe55-4eae-b3ae-869d927ade2d/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-bakery-2.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d606a954-fe55-4eae-b3ae-869d927ade2d/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d606a954-fe55-4eae-b3ae-869d927ade2d/bin/uautomizer-TMbwUNV5ro --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 792abe541332f7dc398bc25a6deb152789a85df6c33026f5ef70dc244a881f99 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 20:34:03,402 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:34:03,405 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:34:03,444 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:34:03,447 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:34:03,452 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:34:03,455 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:34:03,464 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:34:03,466 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:34:03,470 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:34:03,472 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:34:03,475 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:34:03,475 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:34:03,481 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:34:03,484 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:34:03,486 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:34:03,488 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:34:03,490 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:34:03,493 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:34:03,498 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:34:03,503 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:34:03,506 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:34:03,509 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:34:03,510 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:34:03,517 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:34:03,522 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:34:03,522 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:34:03,524 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:34:03,525 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:34:03,526 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:34:03,527 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:34:03,528 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:34:03,530 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:34:03,533 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:34:03,535 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:34:03,536 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:34:03,537 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:34:03,537 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:34:03,537 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:34:03,539 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:34:03,539 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:34:03,540 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d606a954-fe55-4eae-b3ae-869d927ade2d/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-18 20:34:03,577 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:34:03,578 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:34:03,579 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:34:03,579 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:34:03,580 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:34:03,580 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:34:03,581 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:34:03,581 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:34:03,582 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:34:03,582 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:34:03,583 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 20:34:03,583 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:34:03,583 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 20:34:03,584 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:34:03,584 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 20:34:03,584 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:34:03,585 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 20:34:03,585 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 20:34:03,585 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 20:34:03,586 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:34:03,586 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 20:34:03,586 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:34:03,587 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:34:03,587 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:34:03,588 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:34:03,588 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:34:03,588 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:34:03,589 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 20:34:03,589 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:34:03,589 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 20:34:03,590 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 20:34:03,590 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 20:34:03,590 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 20:34:03,591 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_d606a954-fe55-4eae-b3ae-869d927ade2d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d606a954-fe55-4eae-b3ae-869d927ade2d/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 792abe541332f7dc398bc25a6deb152789a85df6c33026f5ef70dc244a881f99 [2022-11-18 20:34:03,947 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:34:03,977 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:34:03,982 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:34:03,984 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:34:03,985 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:34:03,987 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d606a954-fe55-4eae-b3ae-869d927ade2d/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/weaver/parallel-bakery-2.wvr.c [2022-11-18 20:34:04,067 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d606a954-fe55-4eae-b3ae-869d927ade2d/bin/uautomizer-TMbwUNV5ro/data/f6e8c7204/dc6098bc726e4cf39eef5106eee34815/FLAG926dcdcbf [2022-11-18 20:34:04,663 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:34:04,664 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d606a954-fe55-4eae-b3ae-869d927ade2d/sv-benchmarks/c/weaver/parallel-bakery-2.wvr.c [2022-11-18 20:34:04,671 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d606a954-fe55-4eae-b3ae-869d927ade2d/bin/uautomizer-TMbwUNV5ro/data/f6e8c7204/dc6098bc726e4cf39eef5106eee34815/FLAG926dcdcbf [2022-11-18 20:34:05,019 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d606a954-fe55-4eae-b3ae-869d927ade2d/bin/uautomizer-TMbwUNV5ro/data/f6e8c7204/dc6098bc726e4cf39eef5106eee34815 [2022-11-18 20:34:05,029 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:34:05,031 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:34:05,039 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:34:05,040 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:34:05,044 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:34:05,045 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:34:05" (1/1) ... [2022-11-18 20:34:05,047 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4aba98a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:05, skipping insertion in model container [2022-11-18 20:34:05,048 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:34:05" (1/1) ... [2022-11-18 20:34:05,058 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:34:05,099 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:34:05,445 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_d606a954-fe55-4eae-b3ae-869d927ade2d/sv-benchmarks/c/weaver/parallel-bakery-2.wvr.c[3512,3525] [2022-11-18 20:34:05,460 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:34:05,471 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:34:05,508 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_d606a954-fe55-4eae-b3ae-869d927ade2d/sv-benchmarks/c/weaver/parallel-bakery-2.wvr.c[3512,3525] [2022-11-18 20:34:05,513 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:34:05,534 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:34:05,535 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:05 WrapperNode [2022-11-18 20:34:05,535 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:34:05,537 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:34:05,537 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:34:05,537 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:34:05,547 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:05" (1/1) ... [2022-11-18 20:34:05,570 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:05" (1/1) ... [2022-11-18 20:34:05,613 INFO L138 Inliner]: procedures = 21, calls = 60, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 148 [2022-11-18 20:34:05,616 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:34:05,617 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:34:05,618 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:34:05,618 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:34:05,629 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:05" (1/1) ... [2022-11-18 20:34:05,629 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:05" (1/1) ... [2022-11-18 20:34:05,645 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:05" (1/1) ... [2022-11-18 20:34:05,646 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:05" (1/1) ... [2022-11-18 20:34:05,651 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:05" (1/1) ... [2022-11-18 20:34:05,665 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:05" (1/1) ... [2022-11-18 20:34:05,667 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:05" (1/1) ... [2022-11-18 20:34:05,669 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:05" (1/1) ... [2022-11-18 20:34:05,671 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:34:05,683 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:34:05,684 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:34:05,685 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:34:05,686 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:05" (1/1) ... [2022-11-18 20:34:05,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:34:05,715 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d606a954-fe55-4eae-b3ae-869d927ade2d/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:34:05,732 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d606a954-fe55-4eae-b3ae-869d927ade2d/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:34:05,766 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d606a954-fe55-4eae-b3ae-869d927ade2d/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:34:05,804 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 20:34:05,805 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-18 20:34:05,805 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-18 20:34:05,805 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-18 20:34:05,806 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-18 20:34:05,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 20:34:05,806 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 20:34:05,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 20:34:05,807 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-18 20:34:05,807 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-18 20:34:05,807 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:34:05,807 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:34:05,808 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 20:34:05,808 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 20:34:05,810 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 20:34:05,967 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:34:05,969 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:34:06,358 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:34:06,463 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:34:06,463 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-18 20:34:06,466 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:34:06 BoogieIcfgContainer [2022-11-18 20:34:06,466 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:34:06,469 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:34:06,469 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:34:06,474 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:34:06,474 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:34:05" (1/3) ... [2022-11-18 20:34:06,475 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c8187b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:34:06, skipping insertion in model container [2022-11-18 20:34:06,475 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:05" (2/3) ... [2022-11-18 20:34:06,476 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c8187b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:34:06, skipping insertion in model container [2022-11-18 20:34:06,476 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:34:06" (3/3) ... [2022-11-18 20:34:06,478 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-bakery-2.wvr.c [2022-11-18 20:34:06,489 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 20:34:06,503 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:34:06,504 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-18 20:34:06,504 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 20:34:06,613 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-18 20:34:06,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 113 places, 108 transitions, 232 flow [2022-11-18 20:34:06,769 INFO L130 PetriNetUnfolder]: 2/106 cut-off events. [2022-11-18 20:34:06,769 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-18 20:34:06,774 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115 conditions, 106 events. 2/106 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 44 event pairs, 0 based on Foata normal form. 0/103 useless extension candidates. Maximal degree in co-relation 70. Up to 2 conditions per place. [2022-11-18 20:34:06,774 INFO L82 GeneralOperation]: Start removeDead. Operand has 113 places, 108 transitions, 232 flow [2022-11-18 20:34:06,780 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 102 places, 97 transitions, 206 flow [2022-11-18 20:34:06,793 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:34:06,802 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;@a99c851, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:34:06,802 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-18 20:34:06,844 INFO L130 PetriNetUnfolder]: 2/96 cut-off events. [2022-11-18 20:34:06,844 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-18 20:34:06,845 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:34:06,845 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] [2022-11-18 20:34:06,846 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:34:06,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:34:06,853 INFO L85 PathProgramCache]: Analyzing trace with hash 622513178, now seen corresponding path program 1 times [2022-11-18 20:34:06,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:34:06,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888278371] [2022-11-18 20:34:06,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:34:06,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:34:07,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:08,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:34:08,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:34:08,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888278371] [2022-11-18 20:34:08,394 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888278371] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:34:08,394 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:34:08,395 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-18 20:34:08,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833435817] [2022-11-18 20:34:08,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:34:08,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 20:34:08,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:34:08,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 20:34:08,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-18 20:34:08,452 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 108 [2022-11-18 20:34:08,458 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 97 transitions, 206 flow. Second operand has 11 states, 11 states have (on average 77.54545454545455) internal successors, (853), 11 states have internal predecessors, (853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:08,458 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:34:08,459 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 108 [2022-11-18 20:34:08,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:34:09,206 INFO L130 PetriNetUnfolder]: 33/258 cut-off events. [2022-11-18 20:34:09,207 INFO L131 PetriNetUnfolder]: For 49/49 co-relation queries the response was YES. [2022-11-18 20:34:09,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 414 conditions, 258 events. 33/258 cut-off events. For 49/49 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 891 event pairs, 18 based on Foata normal form. 5/255 useless extension candidates. Maximal degree in co-relation 238. Up to 43 conditions per place. [2022-11-18 20:34:09,215 INFO L137 encePairwiseOnDemand]: 90/108 looper letters, 40 selfloop transitions, 13 changer transitions 15/133 dead transitions. [2022-11-18 20:34:09,215 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 133 transitions, 435 flow [2022-11-18 20:34:09,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-18 20:34:09,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-18 20:34:09,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1274 transitions. [2022-11-18 20:34:09,244 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7372685185185185 [2022-11-18 20:34:09,245 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1274 transitions. [2022-11-18 20:34:09,245 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1274 transitions. [2022-11-18 20:34:09,254 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:34:09,257 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1274 transitions. [2022-11-18 20:34:09,265 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 79.625) internal successors, (1274), 16 states have internal predecessors, (1274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:09,277 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 108.0) internal successors, (1836), 17 states have internal predecessors, (1836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:09,278 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 108.0) internal successors, (1836), 17 states have internal predecessors, (1836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:09,279 INFO L175 Difference]: Start difference. First operand has 102 places, 97 transitions, 206 flow. Second operand 16 states and 1274 transitions. [2022-11-18 20:34:09,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 133 transitions, 435 flow [2022-11-18 20:34:09,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 133 transitions, 413 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 20:34:09,295 INFO L231 Difference]: Finished difference. Result has 118 places, 98 transitions, 246 flow [2022-11-18 20:34:09,297 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=108, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=246, PETRI_PLACES=118, PETRI_TRANSITIONS=98} [2022-11-18 20:34:09,302 INFO L288 CegarLoopForPetriNet]: 102 programPoint places, 16 predicate places. [2022-11-18 20:34:09,302 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 98 transitions, 246 flow [2022-11-18 20:34:09,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 77.54545454545455) internal successors, (853), 11 states have internal predecessors, (853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:09,304 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:34:09,304 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] [2022-11-18 20:34:09,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 20:34:09,305 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:34:09,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:34:09,306 INFO L85 PathProgramCache]: Analyzing trace with hash -953910778, now seen corresponding path program 2 times [2022-11-18 20:34:09,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:34:09,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963299549] [2022-11-18 20:34:09,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:34:09,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:34:09,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:09,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:34:09,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:34:09,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963299549] [2022-11-18 20:34:09,913 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963299549] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:34:09,913 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:34:09,914 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-18 20:34:09,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716306662] [2022-11-18 20:34:09,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:34:09,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 20:34:09,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:34:09,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 20:34:09,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-18 20:34:09,926 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 108 [2022-11-18 20:34:09,929 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 98 transitions, 246 flow. Second operand has 11 states, 11 states have (on average 77.54545454545455) internal successors, (853), 11 states have internal predecessors, (853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:09,929 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:34:09,930 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 108 [2022-11-18 20:34:09,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:34:10,372 INFO L130 PetriNetUnfolder]: 33/237 cut-off events. [2022-11-18 20:34:10,372 INFO L131 PetriNetUnfolder]: For 28/28 co-relation queries the response was YES. [2022-11-18 20:34:10,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 419 conditions, 237 events. 33/237 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 752 event pairs, 15 based on Foata normal form. 1/236 useless extension candidates. Maximal degree in co-relation 401. Up to 40 conditions per place. [2022-11-18 20:34:10,380 INFO L137 encePairwiseOnDemand]: 94/108 looper letters, 29 selfloop transitions, 12 changer transitions 17/123 dead transitions. [2022-11-18 20:34:10,380 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 123 transitions, 435 flow [2022-11-18 20:34:10,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 20:34:10,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-18 20:34:10,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 958 transitions. [2022-11-18 20:34:10,384 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7391975308641975 [2022-11-18 20:34:10,384 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 958 transitions. [2022-11-18 20:34:10,384 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 958 transitions. [2022-11-18 20:34:10,385 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:34:10,385 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 958 transitions. [2022-11-18 20:34:10,389 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 79.83333333333333) internal successors, (958), 12 states have internal predecessors, (958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:10,395 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 108.0) internal successors, (1404), 13 states have internal predecessors, (1404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:10,395 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 108.0) internal successors, (1404), 13 states have internal predecessors, (1404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:10,396 INFO L175 Difference]: Start difference. First operand has 118 places, 98 transitions, 246 flow. Second operand 12 states and 958 transitions. [2022-11-18 20:34:10,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 123 transitions, 435 flow [2022-11-18 20:34:10,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 123 transitions, 415 flow, removed 8 selfloop flow, removed 5 redundant places. [2022-11-18 20:34:10,407 INFO L231 Difference]: Finished difference. Result has 117 places, 95 transitions, 253 flow [2022-11-18 20:34:10,407 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=108, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=253, PETRI_PLACES=117, PETRI_TRANSITIONS=95} [2022-11-18 20:34:10,408 INFO L288 CegarLoopForPetriNet]: 102 programPoint places, 15 predicate places. [2022-11-18 20:34:10,408 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 95 transitions, 253 flow [2022-11-18 20:34:10,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 77.54545454545455) internal successors, (853), 11 states have internal predecessors, (853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:10,409 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:34:10,410 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] [2022-11-18 20:34:10,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 20:34:10,411 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:34:10,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:34:10,412 INFO L85 PathProgramCache]: Analyzing trace with hash 331385908, now seen corresponding path program 3 times [2022-11-18 20:34:10,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:34:10,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646444121] [2022-11-18 20:34:10,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:34:10,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:34:10,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:10,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:34:10,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:34:10,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646444121] [2022-11-18 20:34:10,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646444121] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:34:10,685 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:34:10,685 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:34:10,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015665890] [2022-11-18 20:34:10,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:34:10,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:34:10,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:34:10,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:34:10,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:34:10,688 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 108 [2022-11-18 20:34:10,689 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 95 transitions, 253 flow. Second operand has 3 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:10,689 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:34:10,689 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 108 [2022-11-18 20:34:10,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:34:10,769 INFO L130 PetriNetUnfolder]: 18/166 cut-off events. [2022-11-18 20:34:10,769 INFO L131 PetriNetUnfolder]: For 14/15 co-relation queries the response was YES. [2022-11-18 20:34:10,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 277 conditions, 166 events. 18/166 cut-off events. For 14/15 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 291 event pairs, 8 based on Foata normal form. 2/164 useless extension candidates. Maximal degree in co-relation 260. Up to 40 conditions per place. [2022-11-18 20:34:10,771 INFO L137 encePairwiseOnDemand]: 105/108 looper letters, 16 selfloop transitions, 2 changer transitions 0/98 dead transitions. [2022-11-18 20:34:10,771 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 98 transitions, 296 flow [2022-11-18 20:34:10,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:34:10,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 20:34:10,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 289 transitions. [2022-11-18 20:34:10,774 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8919753086419753 [2022-11-18 20:34:10,774 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 289 transitions. [2022-11-18 20:34:10,774 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 289 transitions. [2022-11-18 20:34:10,775 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:34:10,775 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 289 transitions. [2022-11-18 20:34:10,776 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 96.33333333333333) internal successors, (289), 3 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:10,777 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 108.0) internal successors, (432), 4 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:10,777 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 108.0) internal successors, (432), 4 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:10,778 INFO L175 Difference]: Start difference. First operand has 117 places, 95 transitions, 253 flow. Second operand 3 states and 289 transitions. [2022-11-18 20:34:10,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 98 transitions, 296 flow [2022-11-18 20:34:10,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 98 transitions, 253 flow, removed 4 selfloop flow, removed 13 redundant places. [2022-11-18 20:34:10,784 INFO L231 Difference]: Finished difference. Result has 103 places, 95 transitions, 218 flow [2022-11-18 20:34:10,785 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=108, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=218, PETRI_PLACES=103, PETRI_TRANSITIONS=95} [2022-11-18 20:34:10,788 INFO L288 CegarLoopForPetriNet]: 102 programPoint places, 1 predicate places. [2022-11-18 20:34:10,788 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 95 transitions, 218 flow [2022-11-18 20:34:10,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:10,789 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:34:10,789 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] [2022-11-18 20:34:10,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 20:34:10,789 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:34:10,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:34:10,791 INFO L85 PathProgramCache]: Analyzing trace with hash 2131413956, now seen corresponding path program 4 times [2022-11-18 20:34:10,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:34:10,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931715153] [2022-11-18 20:34:10,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:34:10,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:34:10,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:11,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:34:11,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:34:11,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931715153] [2022-11-18 20:34:11,604 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931715153] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:34:11,604 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:34:11,605 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 20:34:11,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055238185] [2022-11-18 20:34:11,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:34:11,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 20:34:11,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:34:11,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 20:34:11,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:34:11,615 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 108 [2022-11-18 20:34:11,616 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 95 transitions, 218 flow. Second operand has 8 states, 8 states have (on average 80.25) internal successors, (642), 8 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:11,617 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:34:11,617 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 108 [2022-11-18 20:34:11,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:34:11,814 INFO L130 PetriNetUnfolder]: 26/202 cut-off events. [2022-11-18 20:34:11,814 INFO L131 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2022-11-18 20:34:11,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 336 conditions, 202 events. 26/202 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 475 event pairs, 10 based on Foata normal form. 3/201 useless extension candidates. Maximal degree in co-relation 140. Up to 56 conditions per place. [2022-11-18 20:34:11,816 INFO L137 encePairwiseOnDemand]: 101/108 looper letters, 25 selfloop transitions, 6 changer transitions 8/108 dead transitions. [2022-11-18 20:34:11,816 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 108 transitions, 325 flow [2022-11-18 20:34:11,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 20:34:11,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-18 20:34:11,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 656 transitions. [2022-11-18 20:34:11,820 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7592592592592593 [2022-11-18 20:34:11,820 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 656 transitions. [2022-11-18 20:34:11,820 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 656 transitions. [2022-11-18 20:34:11,821 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:34:11,821 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 656 transitions. [2022-11-18 20:34:11,823 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 82.0) internal successors, (656), 8 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:11,826 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 108.0) internal successors, (972), 9 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:11,827 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 108.0) internal successors, (972), 9 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:11,827 INFO L175 Difference]: Start difference. First operand has 103 places, 95 transitions, 218 flow. Second operand 8 states and 656 transitions. [2022-11-18 20:34:11,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 108 transitions, 325 flow [2022-11-18 20:34:11,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 108 transitions, 321 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 20:34:11,831 INFO L231 Difference]: Finished difference. Result has 111 places, 97 transitions, 241 flow [2022-11-18 20:34:11,832 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=108, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=241, PETRI_PLACES=111, PETRI_TRANSITIONS=97} [2022-11-18 20:34:11,833 INFO L288 CegarLoopForPetriNet]: 102 programPoint places, 9 predicate places. [2022-11-18 20:34:11,833 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 97 transitions, 241 flow [2022-11-18 20:34:11,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 80.25) internal successors, (642), 8 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:11,834 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:34:11,834 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] [2022-11-18 20:34:11,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 20:34:11,835 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:34:11,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:34:11,835 INFO L85 PathProgramCache]: Analyzing trace with hash 1980016846, now seen corresponding path program 5 times [2022-11-18 20:34:11,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:34:11,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352928745] [2022-11-18 20:34:11,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:34:11,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:34:11,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:11,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:34:11,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:34:11,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352928745] [2022-11-18 20:34:11,972 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352928745] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:34:11,972 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:34:11,972 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:34:11,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778536115] [2022-11-18 20:34:11,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:34:11,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:34:11,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:34:11,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:34:11,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:34:11,975 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 108 [2022-11-18 20:34:11,976 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 97 transitions, 241 flow. Second operand has 3 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:11,976 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:34:11,976 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 108 [2022-11-18 20:34:11,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:34:12,026 INFO L130 PetriNetUnfolder]: 13/155 cut-off events. [2022-11-18 20:34:12,026 INFO L131 PetriNetUnfolder]: For 26/26 co-relation queries the response was YES. [2022-11-18 20:34:12,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 262 conditions, 155 events. 13/155 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 256 event pairs, 8 based on Foata normal form. 3/155 useless extension candidates. Maximal degree in co-relation 175. Up to 39 conditions per place. [2022-11-18 20:34:12,028 INFO L137 encePairwiseOnDemand]: 105/108 looper letters, 16 selfloop transitions, 2 changer transitions 2/100 dead transitions. [2022-11-18 20:34:12,028 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 100 transitions, 293 flow [2022-11-18 20:34:12,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:34:12,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 20:34:12,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 288 transitions. [2022-11-18 20:34:12,030 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8888888888888888 [2022-11-18 20:34:12,030 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 288 transitions. [2022-11-18 20:34:12,030 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 288 transitions. [2022-11-18 20:34:12,030 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:34:12,031 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 288 transitions. [2022-11-18 20:34:12,032 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 96.0) internal successors, (288), 3 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:12,033 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 108.0) internal successors, (432), 4 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:12,033 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 108.0) internal successors, (432), 4 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:12,033 INFO L175 Difference]: Start difference. First operand has 111 places, 97 transitions, 241 flow. Second operand 3 states and 288 transitions. [2022-11-18 20:34:12,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 100 transitions, 293 flow [2022-11-18 20:34:12,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 100 transitions, 284 flow, removed 1 selfloop flow, removed 4 redundant places. [2022-11-18 20:34:12,037 INFO L231 Difference]: Finished difference. Result has 108 places, 97 transitions, 240 flow [2022-11-18 20:34:12,037 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=108, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=240, PETRI_PLACES=108, PETRI_TRANSITIONS=97} [2022-11-18 20:34:12,038 INFO L288 CegarLoopForPetriNet]: 102 programPoint places, 6 predicate places. [2022-11-18 20:34:12,038 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 97 transitions, 240 flow [2022-11-18 20:34:12,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:12,039 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:34:12,039 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] [2022-11-18 20:34:12,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 20:34:12,040 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:34:12,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:34:12,040 INFO L85 PathProgramCache]: Analyzing trace with hash 1349068758, now seen corresponding path program 6 times [2022-11-18 20:34:12,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:34:12,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146615803] [2022-11-18 20:34:12,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:34:12,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:34:12,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:12,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:34:12,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:34:12,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146615803] [2022-11-18 20:34:12,482 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146615803] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:34:12,482 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:34:12,483 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:34:12,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247403638] [2022-11-18 20:34:12,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:34:12,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:34:12,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:34:12,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:34:12,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:34:12,486 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 108 [2022-11-18 20:34:12,487 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 97 transitions, 240 flow. Second operand has 7 states, 7 states have (on average 80.71428571428571) internal successors, (565), 7 states have internal predecessors, (565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:12,487 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:34:12,487 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 108 [2022-11-18 20:34:12,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:34:12,644 INFO L130 PetriNetUnfolder]: 19/189 cut-off events. [2022-11-18 20:34:12,644 INFO L131 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2022-11-18 20:34:12,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 343 conditions, 189 events. 19/189 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 405 event pairs, 16 based on Foata normal form. 3/188 useless extension candidates. Maximal degree in co-relation 175. Up to 53 conditions per place. [2022-11-18 20:34:12,646 INFO L137 encePairwiseOnDemand]: 102/108 looper letters, 23 selfloop transitions, 4 changer transitions 8/104 dead transitions. [2022-11-18 20:34:12,646 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 104 transitions, 331 flow [2022-11-18 20:34:12,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:34:12,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 20:34:12,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 575 transitions. [2022-11-18 20:34:12,649 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7605820105820106 [2022-11-18 20:34:12,650 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 575 transitions. [2022-11-18 20:34:12,650 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 575 transitions. [2022-11-18 20:34:12,650 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:34:12,651 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 575 transitions. [2022-11-18 20:34:12,652 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 82.14285714285714) internal successors, (575), 7 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:12,654 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 108.0) internal successors, (864), 8 states have internal predecessors, (864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:12,655 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 108.0) internal successors, (864), 8 states have internal predecessors, (864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:12,655 INFO L175 Difference]: Start difference. First operand has 108 places, 97 transitions, 240 flow. Second operand 7 states and 575 transitions. [2022-11-18 20:34:12,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 104 transitions, 331 flow [2022-11-18 20:34:12,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 104 transitions, 327 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 20:34:12,659 INFO L231 Difference]: Finished difference. Result has 113 places, 95 transitions, 236 flow [2022-11-18 20:34:12,659 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=108, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=236, PETRI_PLACES=113, PETRI_TRANSITIONS=95} [2022-11-18 20:34:12,660 INFO L288 CegarLoopForPetriNet]: 102 programPoint places, 11 predicate places. [2022-11-18 20:34:12,660 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 95 transitions, 236 flow [2022-11-18 20:34:12,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 80.71428571428571) internal successors, (565), 7 states have internal predecessors, (565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:12,661 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:34:12,661 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] [2022-11-18 20:34:12,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 20:34:12,662 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:34:12,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:34:12,662 INFO L85 PathProgramCache]: Analyzing trace with hash -877976642, now seen corresponding path program 7 times [2022-11-18 20:34:12,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:34:12,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373729865] [2022-11-18 20:34:12,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:34:12,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:34:12,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:13,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:34:13,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:34:13,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373729865] [2022-11-18 20:34:13,151 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373729865] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:34:13,151 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:34:13,151 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:34:13,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612371087] [2022-11-18 20:34:13,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:34:13,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:34:13,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:34:13,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:34:13,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:34:13,160 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 108 [2022-11-18 20:34:13,161 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 95 transitions, 236 flow. Second operand has 7 states, 7 states have (on average 80.71428571428571) internal successors, (565), 7 states have internal predecessors, (565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:13,162 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:34:13,162 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 108 [2022-11-18 20:34:13,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:34:13,306 INFO L130 PetriNetUnfolder]: 14/166 cut-off events. [2022-11-18 20:34:13,306 INFO L131 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2022-11-18 20:34:13,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 295 conditions, 166 events. 14/166 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 287 event pairs, 8 based on Foata normal form. 4/167 useless extension candidates. Maximal degree in co-relation 199. Up to 44 conditions per place. [2022-11-18 20:34:13,308 INFO L137 encePairwiseOnDemand]: 101/108 looper letters, 22 selfloop transitions, 6 changer transitions 5/102 dead transitions. [2022-11-18 20:34:13,308 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 102 transitions, 326 flow [2022-11-18 20:34:13,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:34:13,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 20:34:13,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 573 transitions. [2022-11-18 20:34:13,311 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7579365079365079 [2022-11-18 20:34:13,311 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 573 transitions. [2022-11-18 20:34:13,311 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 573 transitions. [2022-11-18 20:34:13,311 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:34:13,312 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 573 transitions. [2022-11-18 20:34:13,314 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 81.85714285714286) internal successors, (573), 7 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:13,315 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 108.0) internal successors, (864), 8 states have internal predecessors, (864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:13,316 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 108.0) internal successors, (864), 8 states have internal predecessors, (864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:13,316 INFO L175 Difference]: Start difference. First operand has 113 places, 95 transitions, 236 flow. Second operand 7 states and 573 transitions. [2022-11-18 20:34:13,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 102 transitions, 326 flow [2022-11-18 20:34:13,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 102 transitions, 310 flow, removed 3 selfloop flow, removed 7 redundant places. [2022-11-18 20:34:13,319 INFO L231 Difference]: Finished difference. Result has 110 places, 95 transitions, 238 flow [2022-11-18 20:34:13,319 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=108, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=238, PETRI_PLACES=110, PETRI_TRANSITIONS=95} [2022-11-18 20:34:13,320 INFO L288 CegarLoopForPetriNet]: 102 programPoint places, 8 predicate places. [2022-11-18 20:34:13,320 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 95 transitions, 238 flow [2022-11-18 20:34:13,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 80.71428571428571) internal successors, (565), 7 states have internal predecessors, (565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:13,321 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:34:13,321 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] [2022-11-18 20:34:13,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 20:34:13,321 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:34:13,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:34:13,322 INFO L85 PathProgramCache]: Analyzing trace with hash 2014015966, now seen corresponding path program 8 times [2022-11-18 20:34:13,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:34:13,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219533277] [2022-11-18 20:34:13,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:34:13,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:34:13,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:13,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:34:13,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:34:13,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219533277] [2022-11-18 20:34:13,801 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219533277] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:34:13,802 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:34:13,802 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 20:34:13,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914319518] [2022-11-18 20:34:13,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:34:13,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 20:34:13,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:34:13,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 20:34:13,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:34:13,805 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 108 [2022-11-18 20:34:13,806 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 95 transitions, 238 flow. Second operand has 8 states, 8 states have (on average 80.25) internal successors, (642), 8 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:13,806 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:34:13,807 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 108 [2022-11-18 20:34:13,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:34:13,919 INFO L130 PetriNetUnfolder]: 4/84 cut-off events. [2022-11-18 20:34:13,919 INFO L131 PetriNetUnfolder]: For 14/14 co-relation queries the response was YES. [2022-11-18 20:34:13,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 153 conditions, 84 events. 4/84 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 49 event pairs, 0 based on Foata normal form. 3/87 useless extension candidates. Maximal degree in co-relation 70. Up to 10 conditions per place. [2022-11-18 20:34:13,921 INFO L137 encePairwiseOnDemand]: 101/108 looper letters, 0 selfloop transitions, 0 changer transitions 73/73 dead transitions. [2022-11-18 20:34:13,922 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 73 transitions, 223 flow [2022-11-18 20:34:13,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 20:34:13,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-18 20:34:13,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 636 transitions. [2022-11-18 20:34:13,930 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7361111111111112 [2022-11-18 20:34:13,930 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 636 transitions. [2022-11-18 20:34:13,930 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 636 transitions. [2022-11-18 20:34:13,931 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:34:13,931 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 636 transitions. [2022-11-18 20:34:13,933 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 79.5) internal successors, (636), 8 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:13,935 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 108.0) internal successors, (972), 9 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:13,936 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 108.0) internal successors, (972), 9 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:13,936 INFO L175 Difference]: Start difference. First operand has 110 places, 95 transitions, 238 flow. Second operand 8 states and 636 transitions. [2022-11-18 20:34:13,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 73 transitions, 223 flow [2022-11-18 20:34:13,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 73 transitions, 204 flow, removed 1 selfloop flow, removed 8 redundant places. [2022-11-18 20:34:13,939 INFO L231 Difference]: Finished difference. Result has 85 places, 0 transitions, 0 flow [2022-11-18 20:34:13,939 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=108, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=85, PETRI_TRANSITIONS=0} [2022-11-18 20:34:13,943 INFO L288 CegarLoopForPetriNet]: 102 programPoint places, -17 predicate places. [2022-11-18 20:34:13,944 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 0 transitions, 0 flow [2022-11-18 20:34:13,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 80.25) internal successors, (642), 8 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:13,947 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-11-18 20:34:13,948 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2022-11-18 20:34:13,949 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2022-11-18 20:34:13,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 20:34:13,949 INFO L444 BasicCegarLoop]: Path program histogram: [8] [2022-11-18 20:34:13,965 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-18 20:34:13,966 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-18 20:34:13,975 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 08:34:13 BasicIcfg [2022-11-18 20:34:13,975 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-18 20:34:13,976 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-18 20:34:13,976 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-18 20:34:13,976 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-18 20:34:13,977 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:34:06" (3/4) ... [2022-11-18 20:34:13,981 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-18 20:34:13,988 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-11-18 20:34:13,988 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-11-18 20:34:13,996 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2022-11-18 20:34:13,997 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-18 20:34:13,997 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-18 20:34:13,997 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-18 20:34:14,054 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d606a954-fe55-4eae-b3ae-869d927ade2d/bin/uautomizer-TMbwUNV5ro/witness.graphml [2022-11-18 20:34:14,054 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-18 20:34:14,056 INFO L158 Benchmark]: Toolchain (without parser) took 9024.49ms. Allocated memory was 113.2MB in the beginning and 186.6MB in the end (delta: 73.4MB). Free memory was 76.4MB in the beginning and 69.3MB in the end (delta: 7.1MB). Peak memory consumption was 81.0MB. Max. memory is 16.1GB. [2022-11-18 20:34:14,056 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 113.2MB. Free memory is still 92.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 20:34:14,057 INFO L158 Benchmark]: CACSL2BoogieTranslator took 496.57ms. Allocated memory is still 113.2MB. Free memory was 76.2MB in the beginning and 88.5MB in the end (delta: -12.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-18 20:34:14,057 INFO L158 Benchmark]: Boogie Procedure Inliner took 79.98ms. Allocated memory is still 113.2MB. Free memory was 88.5MB in the beginning and 86.5MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-18 20:34:14,057 INFO L158 Benchmark]: Boogie Preprocessor took 64.80ms. Allocated memory is still 113.2MB. Free memory was 86.5MB in the beginning and 85.2MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 20:34:14,058 INFO L158 Benchmark]: RCFGBuilder took 783.49ms. Allocated memory is still 113.2MB. Free memory was 85.2MB in the beginning and 66.9MB in the end (delta: 18.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-11-18 20:34:14,058 INFO L158 Benchmark]: TraceAbstraction took 7506.33ms. Allocated memory was 113.2MB in the beginning and 186.6MB in the end (delta: 73.4MB). Free memory was 66.1MB in the beginning and 71.4MB in the end (delta: -5.3MB). Peak memory consumption was 71.1MB. Max. memory is 16.1GB. [2022-11-18 20:34:14,059 INFO L158 Benchmark]: Witness Printer took 78.55ms. Allocated memory is still 186.6MB. Free memory was 71.4MB in the beginning and 69.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-18 20:34:14,062 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 113.2MB. Free memory is still 92.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 496.57ms. Allocated memory is still 113.2MB. Free memory was 76.2MB in the beginning and 88.5MB in the end (delta: -12.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 79.98ms. Allocated memory is still 113.2MB. Free memory was 88.5MB in the beginning and 86.5MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 64.80ms. Allocated memory is still 113.2MB. Free memory was 86.5MB in the beginning and 85.2MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 783.49ms. Allocated memory is still 113.2MB. Free memory was 85.2MB in the beginning and 66.9MB in the end (delta: 18.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 7506.33ms. Allocated memory was 113.2MB in the beginning and 186.6MB in the end (delta: 73.4MB). Free memory was 66.1MB in the beginning and 71.4MB in the end (delta: -5.3MB). Peak memory consumption was 71.1MB. Max. memory is 16.1GB. * Witness Printer took 78.55ms. Allocated memory is still 186.6MB. Free memory was 71.4MB in the beginning and 69.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 130]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 133 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 7.3s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 8, EmptinessCheckTime: 0.0s, AutomataDifference: 2.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 207 SdHoareTripleChecker+Valid, 1.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 207 mSDsluCounter, 305 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 212 mSDsCounter, 33 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1049 IncrementalHoareTripleChecker+Invalid, 1082 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 33 mSolverCounterUnsat, 93 mSDtfsCounter, 1049 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 88 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=253occurred in iteration=2, InterpolantAutomatonStates: 64, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 4.0s InterpolantComputationTime, 744 NumberOfCodeBlocks, 744 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 736 ConstructedInterpolants, 0 QuantifiedInterpolants, 2202 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-18 20:34:14,100 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d606a954-fe55-4eae-b3ae-869d927ade2d/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE