./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/chl-name-comparator-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 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_a540b522-355b-40f3-97cf-504880adffc2/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a540b522-355b-40f3-97cf-504880adffc2/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a540b522-355b-40f3-97cf-504880adffc2/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a540b522-355b-40f3-97cf-504880adffc2/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-name-comparator-trans.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a540b522-355b-40f3-97cf-504880adffc2/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a540b522-355b-40f3-97cf-504880adffc2/bin/uautomizer-vX5HgA9Q3a --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 7a18ee378e36a8b6ec16846ba26aa7ebab799f55311c04bb5b266d3aa0d0986d --- 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-b5237d8 [2022-11-21 17:15:12,439 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 17:15:12,442 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 17:15:12,500 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 17:15:12,500 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 17:15:12,504 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 17:15:12,506 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 17:15:12,510 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 17:15:12,511 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 17:15:12,517 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 17:15:12,517 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 17:15:12,519 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 17:15:12,519 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 17:15:12,520 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 17:15:12,521 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 17:15:12,522 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 17:15:12,523 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 17:15:12,524 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 17:15:12,525 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 17:15:12,527 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 17:15:12,528 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 17:15:12,533 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 17:15:12,534 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 17:15:12,534 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 17:15:12,537 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 17:15:12,537 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 17:15:12,538 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 17:15:12,539 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 17:15:12,539 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 17:15:12,540 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 17:15:12,540 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 17:15:12,541 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 17:15:12,542 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 17:15:12,543 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 17:15:12,544 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 17:15:12,544 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 17:15:12,545 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 17:15:12,545 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 17:15:12,545 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 17:15:12,553 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 17:15:12,555 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 17:15:12,555 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a540b522-355b-40f3-97cf-504880adffc2/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-21 17:15:12,595 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 17:15:12,596 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 17:15:12,596 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 17:15:12,597 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 17:15:12,597 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 17:15:12,598 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 17:15:12,598 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 17:15:12,599 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 17:15:12,599 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 17:15:12,599 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 17:15:12,600 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 17:15:12,601 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 17:15:12,601 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 17:15:12,601 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 17:15:12,601 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 17:15:12,602 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 17:15:12,602 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 17:15:12,602 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 17:15:12,602 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 17:15:12,602 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 17:15:12,603 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 17:15:12,603 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 17:15:12,603 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 17:15:12,603 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 17:15:12,604 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 17:15:12,604 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 17:15:12,604 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 17:15:12,604 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 17:15:12,605 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 17:15:12,605 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 17:15:12,605 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 17:15:12,605 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 17:15:12,606 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 17:15:12,606 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_a540b522-355b-40f3-97cf-504880adffc2/bin/uautomizer-vX5HgA9Q3a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a540b522-355b-40f3-97cf-504880adffc2/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7a18ee378e36a8b6ec16846ba26aa7ebab799f55311c04bb5b266d3aa0d0986d [2022-11-21 17:15:12,922 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 17:15:12,961 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 17:15:12,963 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 17:15:12,965 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 17:15:12,965 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 17:15:12,966 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a540b522-355b-40f3-97cf-504880adffc2/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/weaver/chl-name-comparator-trans.wvr.c [2022-11-21 17:15:16,026 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 17:15:16,232 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 17:15:16,234 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a540b522-355b-40f3-97cf-504880adffc2/sv-benchmarks/c/weaver/chl-name-comparator-trans.wvr.c [2022-11-21 17:15:16,243 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a540b522-355b-40f3-97cf-504880adffc2/bin/uautomizer-vX5HgA9Q3a/data/dba89be19/51ab4a60f236492cbbcadf387f7dd1eb/FLAG411ca07f0 [2022-11-21 17:15:16,256 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a540b522-355b-40f3-97cf-504880adffc2/bin/uautomizer-vX5HgA9Q3a/data/dba89be19/51ab4a60f236492cbbcadf387f7dd1eb [2022-11-21 17:15:16,259 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 17:15:16,261 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 17:15:16,262 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 17:15:16,262 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 17:15:16,266 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 17:15:16,267 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 05:15:16" (1/1) ... [2022-11-21 17:15:16,268 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d148ff7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:15:16, skipping insertion in model container [2022-11-21 17:15:16,268 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 05:15:16" (1/1) ... [2022-11-21 17:15:16,275 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 17:15:16,296 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 17:15:16,566 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a540b522-355b-40f3-97cf-504880adffc2/sv-benchmarks/c/weaver/chl-name-comparator-trans.wvr.c[4788,4801] [2022-11-21 17:15:16,577 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 17:15:16,587 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 17:15:16,618 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a540b522-355b-40f3-97cf-504880adffc2/sv-benchmarks/c/weaver/chl-name-comparator-trans.wvr.c[4788,4801] [2022-11-21 17:15:16,622 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 17:15:16,635 INFO L208 MainTranslator]: Completed translation [2022-11-21 17:15:16,636 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:15:16 WrapperNode [2022-11-21 17:15:16,636 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 17:15:16,637 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 17:15:16,637 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 17:15:16,637 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 17:15:16,644 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:15:16" (1/1) ... [2022-11-21 17:15:16,654 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:15:16" (1/1) ... [2022-11-21 17:15:16,686 INFO L138 Inliner]: procedures = 26, calls = 44, calls flagged for inlining = 17, calls inlined = 21, statements flattened = 297 [2022-11-21 17:15:16,686 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 17:15:16,687 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 17:15:16,687 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 17:15:16,687 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 17:15:16,697 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:15:16" (1/1) ... [2022-11-21 17:15:16,698 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:15:16" (1/1) ... [2022-11-21 17:15:16,702 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:15:16" (1/1) ... [2022-11-21 17:15:16,703 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:15:16" (1/1) ... [2022-11-21 17:15:16,713 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:15:16" (1/1) ... [2022-11-21 17:15:16,718 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:15:16" (1/1) ... [2022-11-21 17:15:16,720 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:15:16" (1/1) ... [2022-11-21 17:15:16,726 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:15:16" (1/1) ... [2022-11-21 17:15:16,733 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 17:15:16,741 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 17:15:16,742 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 17:15:16,742 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 17:15:16,743 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:15:16" (1/1) ... [2022-11-21 17:15:16,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 17:15:16,772 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a540b522-355b-40f3-97cf-504880adffc2/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:15:16,787 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a540b522-355b-40f3-97cf-504880adffc2/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 17:15:16,814 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a540b522-355b-40f3-97cf-504880adffc2/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 17:15:16,861 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 17:15:16,861 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-21 17:15:16,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-21 17:15:16,861 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-21 17:15:16,862 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-21 17:15:16,862 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-21 17:15:16,862 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-21 17:15:16,864 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-21 17:15:16,865 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-21 17:15:16,865 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-21 17:15:16,866 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 17:15:16,866 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-21 17:15:16,866 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 17:15:16,866 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 17:15:16,866 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-21 17:15:16,869 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-21 17:15:17,048 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 17:15:17,051 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 17:15:17,563 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 17:15:17,578 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 17:15:17,578 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-21 17:15:17,581 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 05:15:17 BoogieIcfgContainer [2022-11-21 17:15:17,582 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 17:15:17,584 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 17:15:17,584 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 17:15:17,588 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 17:15:17,588 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 05:15:16" (1/3) ... [2022-11-21 17:15:17,589 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1171bc24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 05:15:17, skipping insertion in model container [2022-11-21 17:15:17,590 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:15:16" (2/3) ... [2022-11-21 17:15:17,590 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1171bc24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 05:15:17, skipping insertion in model container [2022-11-21 17:15:17,590 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 05:15:17" (3/3) ... [2022-11-21 17:15:17,592 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-name-comparator-trans.wvr.c [2022-11-21 17:15:17,601 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-21 17:15:17,613 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 17:15:17,613 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-21 17:15:17,613 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-21 17:15:17,843 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-21 17:15:17,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 359 places, 375 transitions, 774 flow [2022-11-21 17:15:18,128 INFO L130 PetriNetUnfolder]: 26/372 cut-off events. [2022-11-21 17:15:18,129 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-21 17:15:18,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 385 conditions, 372 events. 26/372 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 884 event pairs, 0 based on Foata normal form. 0/345 useless extension candidates. Maximal degree in co-relation 274. Up to 2 conditions per place. [2022-11-21 17:15:18,138 INFO L82 GeneralOperation]: Start removeDead. Operand has 359 places, 375 transitions, 774 flow [2022-11-21 17:15:18,146 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 345 places, 361 transitions, 740 flow [2022-11-21 17:15:18,156 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 17:15:18,163 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;@695092d0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 17:15:18,163 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-21 17:15:18,261 INFO L130 PetriNetUnfolder]: 26/360 cut-off events. [2022-11-21 17:15:18,261 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-21 17:15:18,262 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:15:18,263 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:15:18,264 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-21 17:15:18,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:15:18,270 INFO L85 PathProgramCache]: Analyzing trace with hash 758692583, now seen corresponding path program 1 times [2022-11-21 17:15:18,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:15:18,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034578435] [2022-11-21 17:15:18,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:15:18,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:15:18,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:15:18,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:15:18,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:15:18,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034578435] [2022-11-21 17:15:18,667 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034578435] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:15:18,668 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:15:18,668 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 17:15:18,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261144723] [2022-11-21 17:15:18,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:15:18,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-21 17:15:18,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:15:18,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-21 17:15:18,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-21 17:15:18,739 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 349 out of 375 [2022-11-21 17:15:18,743 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 361 transitions, 740 flow. Second operand has 2 states, 2 states have (on average 354.0) internal successors, (708), 2 states have internal predecessors, (708), 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) [2022-11-21 17:15:18,744 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:15:18,744 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 349 of 375 [2022-11-21 17:15:18,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:15:18,884 INFO L130 PetriNetUnfolder]: 7/342 cut-off events. [2022-11-21 17:15:18,884 INFO L131 PetriNetUnfolder]: For 14/16 co-relation queries the response was YES. [2022-11-21 17:15:18,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 362 conditions, 342 events. 7/342 cut-off events. For 14/16 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 853 event pairs, 0 based on Foata normal form. 36/356 useless extension candidates. Maximal degree in co-relation 263. Up to 7 conditions per place. [2022-11-21 17:15:18,894 INFO L137 encePairwiseOnDemand]: 356/375 looper letters, 6 selfloop transitions, 0 changer transitions 3/342 dead transitions. [2022-11-21 17:15:18,894 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 342 transitions, 714 flow [2022-11-21 17:15:18,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-21 17:15:18,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-21 17:15:18,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 723 transitions. [2022-11-21 17:15:18,917 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.964 [2022-11-21 17:15:18,918 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 723 transitions. [2022-11-21 17:15:18,918 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 723 transitions. [2022-11-21 17:15:18,923 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:15:18,925 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 723 transitions. [2022-11-21 17:15:18,931 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 361.5) internal successors, (723), 2 states have internal predecessors, (723), 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) [2022-11-21 17:15:18,941 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 375.0) internal successors, (1125), 3 states have internal predecessors, (1125), 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) [2022-11-21 17:15:18,942 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 375.0) internal successors, (1125), 3 states have internal predecessors, (1125), 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) [2022-11-21 17:15:18,944 INFO L175 Difference]: Start difference. First operand has 345 places, 361 transitions, 740 flow. Second operand 2 states and 723 transitions. [2022-11-21 17:15:18,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 342 transitions, 714 flow [2022-11-21 17:15:18,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 342 transitions, 702 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-21 17:15:18,961 INFO L231 Difference]: Finished difference. Result has 340 places, 339 transitions, 684 flow [2022-11-21 17:15:18,964 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=375, PETRI_DIFFERENCE_MINUEND_FLOW=690, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=342, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=684, PETRI_PLACES=340, PETRI_TRANSITIONS=339} [2022-11-21 17:15:18,971 INFO L288 CegarLoopForPetriNet]: 345 programPoint places, -5 predicate places. [2022-11-21 17:15:18,971 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 339 transitions, 684 flow [2022-11-21 17:15:18,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 354.0) internal successors, (708), 2 states have internal predecessors, (708), 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) [2022-11-21 17:15:18,972 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:15:18,973 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:15:18,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 17:15:18,974 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-21 17:15:18,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:15:18,976 INFO L85 PathProgramCache]: Analyzing trace with hash -1759165071, now seen corresponding path program 1 times [2022-11-21 17:15:18,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:15:18,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636796267] [2022-11-21 17:15:18,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:15:18,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:15:19,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:15:19,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:15:19,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:15:19,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636796267] [2022-11-21 17:15:19,577 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636796267] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:15:19,578 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:15:19,578 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 17:15:19,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456227603] [2022-11-21 17:15:19,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:15:19,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 17:15:19,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:15:19,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 17:15:19,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-21 17:15:19,593 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 337 out of 375 [2022-11-21 17:15:19,597 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 339 transitions, 684 flow. Second operand has 5 states, 5 states have (on average 339.8) internal successors, (1699), 5 states have internal predecessors, (1699), 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) [2022-11-21 17:15:19,597 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:15:19,602 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 337 of 375 [2022-11-21 17:15:19,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:15:19,757 INFO L130 PetriNetUnfolder]: 7/345 cut-off events. [2022-11-21 17:15:19,758 INFO L131 PetriNetUnfolder]: For 3/5 co-relation queries the response was YES. [2022-11-21 17:15:19,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 373 conditions, 345 events. 7/345 cut-off events. For 3/5 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 848 event pairs, 0 based on Foata normal form. 0/326 useless extension candidates. Maximal degree in co-relation 370. Up to 16 conditions per place. [2022-11-21 17:15:19,762 INFO L137 encePairwiseOnDemand]: 370/375 looper letters, 18 selfloop transitions, 4 changer transitions 0/343 dead transitions. [2022-11-21 17:15:19,763 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 343 transitions, 736 flow [2022-11-21 17:15:19,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 17:15:19,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 17:15:19,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1708 transitions. [2022-11-21 17:15:19,769 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9109333333333334 [2022-11-21 17:15:19,769 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1708 transitions. [2022-11-21 17:15:19,770 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1708 transitions. [2022-11-21 17:15:19,771 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:15:19,771 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1708 transitions. [2022-11-21 17:15:19,776 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 341.6) internal successors, (1708), 5 states have internal predecessors, (1708), 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) [2022-11-21 17:15:19,781 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 375.0) internal successors, (2250), 6 states have internal predecessors, (2250), 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) [2022-11-21 17:15:19,783 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 375.0) internal successors, (2250), 6 states have internal predecessors, (2250), 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) [2022-11-21 17:15:19,783 INFO L175 Difference]: Start difference. First operand has 340 places, 339 transitions, 684 flow. Second operand 5 states and 1708 transitions. [2022-11-21 17:15:19,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 343 transitions, 736 flow [2022-11-21 17:15:19,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 343 transitions, 736 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-21 17:15:19,795 INFO L231 Difference]: Finished difference. Result has 342 places, 340 transitions, 700 flow [2022-11-21 17:15:19,796 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=375, PETRI_DIFFERENCE_MINUEND_FLOW=684, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=339, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=335, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=700, PETRI_PLACES=342, PETRI_TRANSITIONS=340} [2022-11-21 17:15:19,796 INFO L288 CegarLoopForPetriNet]: 345 programPoint places, -3 predicate places. [2022-11-21 17:15:19,797 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 340 transitions, 700 flow [2022-11-21 17:15:19,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 339.8) internal successors, (1699), 5 states have internal predecessors, (1699), 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) [2022-11-21 17:15:19,799 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:15:19,799 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:15:19,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-21 17:15:19,800 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-21 17:15:19,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:15:19,802 INFO L85 PathProgramCache]: Analyzing trace with hash 218048336, now seen corresponding path program 1 times [2022-11-21 17:15:19,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:15:19,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816410440] [2022-11-21 17:15:19,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:15:19,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:15:19,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:15:20,246 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:15:20,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:15:20,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816410440] [2022-11-21 17:15:20,247 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816410440] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:15:20,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [99359914] [2022-11-21 17:15:20,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:15:20,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:15:20,250 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a540b522-355b-40f3-97cf-504880adffc2/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:15:20,253 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a540b522-355b-40f3-97cf-504880adffc2/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:15:20,270 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a540b522-355b-40f3-97cf-504880adffc2/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-21 17:15:20,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:15:20,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-21 17:15:20,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:15:20,662 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:15:20,666 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:15:20,793 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:15:20,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [99359914] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:15:20,793 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 17:15:20,794 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2022-11-21 17:15:20,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440776449] [2022-11-21 17:15:20,794 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 17:15:20,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-21 17:15:20,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:15:20,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-21 17:15:20,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2022-11-21 17:15:20,805 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 336 out of 375 [2022-11-21 17:15:20,811 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 340 transitions, 700 flow. Second operand has 14 states, 14 states have (on average 338.7857142857143) internal successors, (4743), 14 states have internal predecessors, (4743), 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) [2022-11-21 17:15:20,813 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:15:20,813 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 336 of 375 [2022-11-21 17:15:20,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:15:21,079 INFO L130 PetriNetUnfolder]: 7/354 cut-off events. [2022-11-21 17:15:21,079 INFO L131 PetriNetUnfolder]: For 7/9 co-relation queries the response was YES. [2022-11-21 17:15:21,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 400 conditions, 354 events. 7/354 cut-off events. For 7/9 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 840 event pairs, 0 based on Foata normal form. 2/338 useless extension candidates. Maximal degree in co-relation 395. Up to 13 conditions per place. [2022-11-21 17:15:21,086 INFO L137 encePairwiseOnDemand]: 367/375 looper letters, 19 selfloop transitions, 11 changer transitions 0/350 dead transitions. [2022-11-21 17:15:21,086 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 350 transitions, 782 flow [2022-11-21 17:15:21,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-21 17:15:21,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-21 17:15:21,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3728 transitions. [2022-11-21 17:15:21,095 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9037575757575758 [2022-11-21 17:15:21,095 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3728 transitions. [2022-11-21 17:15:21,095 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3728 transitions. [2022-11-21 17:15:21,097 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:15:21,098 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3728 transitions. [2022-11-21 17:15:21,106 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 338.90909090909093) internal successors, (3728), 11 states have internal predecessors, (3728), 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) [2022-11-21 17:15:21,114 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 375.0) internal successors, (4500), 12 states have internal predecessors, (4500), 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) [2022-11-21 17:15:21,141 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 375.0) internal successors, (4500), 12 states have internal predecessors, (4500), 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) [2022-11-21 17:15:21,141 INFO L175 Difference]: Start difference. First operand has 342 places, 340 transitions, 700 flow. Second operand 11 states and 3728 transitions. [2022-11-21 17:15:21,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 350 transitions, 782 flow [2022-11-21 17:15:21,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 350 transitions, 776 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-21 17:15:21,148 INFO L231 Difference]: Finished difference. Result has 352 places, 346 transitions, 749 flow [2022-11-21 17:15:21,149 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=375, PETRI_DIFFERENCE_MINUEND_FLOW=694, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=340, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=332, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=749, PETRI_PLACES=352, PETRI_TRANSITIONS=346} [2022-11-21 17:15:21,150 INFO L288 CegarLoopForPetriNet]: 345 programPoint places, 7 predicate places. [2022-11-21 17:15:21,150 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 346 transitions, 749 flow [2022-11-21 17:15:21,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 338.7857142857143) internal successors, (4743), 14 states have internal predecessors, (4743), 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) [2022-11-21 17:15:21,152 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:15:21,153 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:15:21,165 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a540b522-355b-40f3-97cf-504880adffc2/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-21 17:15:21,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a540b522-355b-40f3-97cf-504880adffc2/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:15:21,354 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-21 17:15:21,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:15:21,354 INFO L85 PathProgramCache]: Analyzing trace with hash 681717692, now seen corresponding path program 2 times [2022-11-21 17:15:21,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:15:21,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286654244] [2022-11-21 17:15:21,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:15:21,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:15:21,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:15:21,874 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-21 17:15:21,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:15:21,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286654244] [2022-11-21 17:15:21,875 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286654244] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:15:21,875 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:15:21,875 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-21 17:15:21,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017269612] [2022-11-21 17:15:21,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:15:21,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-21 17:15:21,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:15:21,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-21 17:15:21,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-21 17:15:21,881 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 300 out of 375 [2022-11-21 17:15:21,884 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 346 transitions, 749 flow. Second operand has 9 states, 9 states have (on average 304.22222222222223) internal successors, (2738), 9 states have internal predecessors, (2738), 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) [2022-11-21 17:15:21,884 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:15:21,884 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 300 of 375 [2022-11-21 17:15:21,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:15:24,632 INFO L130 PetriNetUnfolder]: 2368/9199 cut-off events. [2022-11-21 17:15:24,632 INFO L131 PetriNetUnfolder]: For 135/135 co-relation queries the response was YES. [2022-11-21 17:15:24,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13046 conditions, 9199 events. 2368/9199 cut-off events. For 135/135 co-relation queries the response was YES. Maximal size of possible extension queue 343. Compared 101481 event pairs, 815 based on Foata normal form. 1/8417 useless extension candidates. Maximal degree in co-relation 13038. Up to 1390 conditions per place. [2022-11-21 17:15:24,746 INFO L137 encePairwiseOnDemand]: 359/375 looper letters, 120 selfloop transitions, 14 changer transitions 4/432 dead transitions. [2022-11-21 17:15:24,747 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 432 transitions, 1213 flow [2022-11-21 17:15:24,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-21 17:15:24,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-21 17:15:24,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 3139 transitions. [2022-11-21 17:15:24,755 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8370666666666666 [2022-11-21 17:15:24,755 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 3139 transitions. [2022-11-21 17:15:24,756 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 3139 transitions. [2022-11-21 17:15:24,757 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:15:24,758 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 3139 transitions. [2022-11-21 17:15:24,764 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 313.9) internal successors, (3139), 10 states have internal predecessors, (3139), 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) [2022-11-21 17:15:24,771 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 375.0) internal successors, (4125), 11 states have internal predecessors, (4125), 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) [2022-11-21 17:15:24,775 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 375.0) internal successors, (4125), 11 states have internal predecessors, (4125), 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) [2022-11-21 17:15:24,775 INFO L175 Difference]: Start difference. First operand has 352 places, 346 transitions, 749 flow. Second operand 10 states and 3139 transitions. [2022-11-21 17:15:24,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 432 transitions, 1213 flow [2022-11-21 17:15:24,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 432 transitions, 1204 flow, removed 2 selfloop flow, removed 3 redundant places. [2022-11-21 17:15:24,786 INFO L231 Difference]: Finished difference. Result has 364 places, 352 transitions, 811 flow [2022-11-21 17:15:24,787 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=375, PETRI_DIFFERENCE_MINUEND_FLOW=740, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=346, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=333, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=811, PETRI_PLACES=364, PETRI_TRANSITIONS=352} [2022-11-21 17:15:24,789 INFO L288 CegarLoopForPetriNet]: 345 programPoint places, 19 predicate places. [2022-11-21 17:15:24,789 INFO L495 AbstractCegarLoop]: Abstraction has has 364 places, 352 transitions, 811 flow [2022-11-21 17:15:24,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 304.22222222222223) internal successors, (2738), 9 states have internal predecessors, (2738), 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) [2022-11-21 17:15:24,791 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:15:24,791 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:15:24,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-21 17:15:24,792 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-21 17:15:24,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:15:24,793 INFO L85 PathProgramCache]: Analyzing trace with hash -1157167009, now seen corresponding path program 1 times [2022-11-21 17:15:24,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:15:24,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466418709] [2022-11-21 17:15:24,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:15:24,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:15:24,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:15:25,868 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-21 17:15:25,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:15:25,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466418709] [2022-11-21 17:15:25,869 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466418709] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:15:25,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2042130612] [2022-11-21 17:15:25,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:15:25,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:15:25,870 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a540b522-355b-40f3-97cf-504880adffc2/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:15:25,872 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a540b522-355b-40f3-97cf-504880adffc2/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:15:25,902 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a540b522-355b-40f3-97cf-504880adffc2/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-21 17:15:26,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:15:26,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 472 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-21 17:15:26,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:15:27,205 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-21 17:15:27,205 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:15:27,815 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-21 17:15:27,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2042130612] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:15:27,816 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 17:15:27,816 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12, 13] total 23 [2022-11-21 17:15:27,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552845447] [2022-11-21 17:15:27,817 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 17:15:27,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-21 17:15:27,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:15:27,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-21 17:15:27,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=365, Unknown=0, NotChecked=0, Total=506 [2022-11-21 17:15:27,829 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 277 out of 375 [2022-11-21 17:15:27,839 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 352 transitions, 811 flow. Second operand has 23 states, 23 states have (on average 280.5217391304348) internal successors, (6452), 23 states have internal predecessors, (6452), 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) [2022-11-21 17:15:27,839 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:15:27,839 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 277 of 375 [2022-11-21 17:15:27,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand