./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-counter-fun.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32650ef8-0cc2-4c60-b5a3-e539f9234e69/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32650ef8-0cc2-4c60-b5a3-e539f9234e69/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_32650ef8-0cc2-4c60-b5a3-e539f9234e69/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32650ef8-0cc2-4c60-b5a3-e539f9234e69/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-counter-fun.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32650ef8-0cc2-4c60-b5a3-e539f9234e69/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_32650ef8-0cc2-4c60-b5a3-e539f9234e69/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 00b544e07f34285bd260f481b4b1205a15ed1c83d300c57496244de51f7f3936 --- 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 16:42:13,555 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 16:42:13,557 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 16:42:13,580 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 16:42:13,580 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 16:42:13,582 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 16:42:13,583 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 16:42:13,585 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 16:42:13,587 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 16:42:13,589 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 16:42:13,590 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 16:42:13,591 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 16:42:13,592 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 16:42:13,593 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 16:42:13,595 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 16:42:13,596 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 16:42:13,597 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 16:42:13,599 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 16:42:13,601 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 16:42:13,603 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 16:42:13,605 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 16:42:13,607 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 16:42:13,608 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 16:42:13,610 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 16:42:13,614 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 16:42:13,615 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 16:42:13,615 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 16:42:13,616 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 16:42:13,617 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 16:42:13,618 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 16:42:13,619 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 16:42:13,620 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 16:42:13,621 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 16:42:13,622 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 16:42:13,623 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 16:42:13,624 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 16:42:13,625 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 16:42:13,625 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 16:42:13,626 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 16:42:13,627 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 16:42:13,628 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 16:42:13,629 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32650ef8-0cc2-4c60-b5a3-e539f9234e69/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-21 16:42:13,653 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 16:42:13,654 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 16:42:13,657 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 16:42:13,657 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 16:42:13,658 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 16:42:13,658 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 16:42:13,659 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 16:42:13,659 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 16:42:13,660 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 16:42:13,660 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 16:42:13,660 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 16:42:13,661 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 16:42:13,661 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 16:42:13,661 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 16:42:13,661 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 16:42:13,662 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 16:42:13,662 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 16:42:13,662 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 16:42:13,662 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 16:42:13,663 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 16:42:13,663 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 16:42:13,663 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 16:42:13,663 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 16:42:13,664 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 16:42:13,664 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 16:42:13,664 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 16:42:13,665 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 16:42:13,665 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 16:42:13,665 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 16:42:13,665 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 16:42:13,666 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 16:42:13,666 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 16:42:13,666 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 16:42:13,666 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_32650ef8-0cc2-4c60-b5a3-e539f9234e69/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32650ef8-0cc2-4c60-b5a3-e539f9234e69/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 00b544e07f34285bd260f481b4b1205a15ed1c83d300c57496244de51f7f3936 [2022-11-21 16:42:13,936 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 16:42:13,967 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 16:42:13,970 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 16:42:13,971 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 16:42:13,972 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 16:42:13,973 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32650ef8-0cc2-4c60-b5a3-e539f9234e69/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/weaver/popl20-counter-fun.wvr.c [2022-11-21 16:42:17,163 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 16:42:17,462 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 16:42:17,462 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32650ef8-0cc2-4c60-b5a3-e539f9234e69/sv-benchmarks/c/weaver/popl20-counter-fun.wvr.c [2022-11-21 16:42:17,471 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32650ef8-0cc2-4c60-b5a3-e539f9234e69/bin/uautomizer-vX5HgA9Q3a/data/fa4ae5b4c/77c43734949e4111bbad7d76eaae2637/FLAGe5bd7406c [2022-11-21 16:42:17,492 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32650ef8-0cc2-4c60-b5a3-e539f9234e69/bin/uautomizer-vX5HgA9Q3a/data/fa4ae5b4c/77c43734949e4111bbad7d76eaae2637 [2022-11-21 16:42:17,495 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 16:42:17,499 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 16:42:17,504 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 16:42:17,504 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 16:42:17,508 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 16:42:17,512 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:42:17" (1/1) ... [2022-11-21 16:42:17,513 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c07caac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:42:17, skipping insertion in model container [2022-11-21 16:42:17,514 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:42:17" (1/1) ... [2022-11-21 16:42:17,522 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 16:42:17,553 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 16:42:17,801 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_32650ef8-0cc2-4c60-b5a3-e539f9234e69/sv-benchmarks/c/weaver/popl20-counter-fun.wvr.c[2681,2694] [2022-11-21 16:42:17,812 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 16:42:17,832 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 16:42:17,869 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_32650ef8-0cc2-4c60-b5a3-e539f9234e69/sv-benchmarks/c/weaver/popl20-counter-fun.wvr.c[2681,2694] [2022-11-21 16:42:17,872 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 16:42:17,888 INFO L208 MainTranslator]: Completed translation [2022-11-21 16:42:17,888 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:42:17 WrapperNode [2022-11-21 16:42:17,888 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 16:42:17,890 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 16:42:17,890 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 16:42:17,890 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 16:42:17,898 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:42:17" (1/1) ... [2022-11-21 16:42:17,922 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:42:17" (1/1) ... [2022-11-21 16:42:17,948 INFO L138 Inliner]: procedures = 24, calls = 45, calls flagged for inlining = 13, calls inlined = 15, statements flattened = 193 [2022-11-21 16:42:17,948 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 16:42:17,949 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 16:42:17,949 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 16:42:17,949 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 16:42:17,960 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:42:17" (1/1) ... [2022-11-21 16:42:17,960 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:42:17" (1/1) ... [2022-11-21 16:42:17,964 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:42:17" (1/1) ... [2022-11-21 16:42:17,964 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:42:17" (1/1) ... [2022-11-21 16:42:17,974 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:42:17" (1/1) ... [2022-11-21 16:42:17,979 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:42:17" (1/1) ... [2022-11-21 16:42:17,982 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:42:17" (1/1) ... [2022-11-21 16:42:17,983 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:42:17" (1/1) ... [2022-11-21 16:42:17,987 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 16:42:17,988 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 16:42:17,988 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 16:42:17,988 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 16:42:17,989 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:42:17" (1/1) ... [2022-11-21 16:42:17,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 16:42:18,010 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32650ef8-0cc2-4c60-b5a3-e539f9234e69/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:42:18,025 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32650ef8-0cc2-4c60-b5a3-e539f9234e69/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 16:42:18,057 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32650ef8-0cc2-4c60-b5a3-e539f9234e69/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 16:42:18,085 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 16:42:18,085 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-21 16:42:18,085 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-21 16:42:18,085 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-21 16:42:18,085 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-21 16:42:18,086 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 16:42:18,086 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-21 16:42:18,086 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-21 16:42:18,086 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-21 16:42:18,086 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-21 16:42:18,086 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-21 16:42:18,087 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 16:42:18,087 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 16:42:18,087 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-21 16:42:18,087 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-21 16:42:18,089 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 16:42:18,194 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 16:42:18,196 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 16:42:18,630 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 16:42:18,888 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 16:42:18,888 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-21 16:42:18,891 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:42:18 BoogieIcfgContainer [2022-11-21 16:42:18,891 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 16:42:18,894 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 16:42:18,894 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 16:42:18,898 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 16:42:18,898 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 04:42:17" (1/3) ... [2022-11-21 16:42:18,899 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4877ea1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 04:42:18, skipping insertion in model container [2022-11-21 16:42:18,900 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:42:17" (2/3) ... [2022-11-21 16:42:18,900 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4877ea1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 04:42:18, skipping insertion in model container [2022-11-21 16:42:18,900 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:42:18" (3/3) ... [2022-11-21 16:42:18,902 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-counter-fun.wvr.c [2022-11-21 16:42:18,912 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-21 16:42:18,925 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 16:42:18,926 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-21 16:42:18,926 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-21 16:42:19,041 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-21 16:42:19,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 159 places, 165 transitions, 346 flow [2022-11-21 16:42:19,174 INFO L130 PetriNetUnfolder]: 13/163 cut-off events. [2022-11-21 16:42:19,174 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-21 16:42:19,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 172 conditions, 163 events. 13/163 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 82 event pairs, 0 based on Foata normal form. 0/149 useless extension candidates. Maximal degree in co-relation 128. Up to 2 conditions per place. [2022-11-21 16:42:19,204 INFO L82 GeneralOperation]: Start removeDead. Operand has 159 places, 165 transitions, 346 flow [2022-11-21 16:42:19,210 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 148 places, 154 transitions, 320 flow [2022-11-21 16:42:19,263 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 16:42:19,270 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;@29bc832c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 16:42:19,270 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-21 16:42:19,337 INFO L130 PetriNetUnfolder]: 13/153 cut-off events. [2022-11-21 16:42:19,337 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-21 16:42:19,338 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:42:19,339 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] [2022-11-21 16:42:19,339 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:42:19,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:42:19,346 INFO L85 PathProgramCache]: Analyzing trace with hash -1165910738, now seen corresponding path program 1 times [2022-11-21 16:42:19,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:42:19,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894913829] [2022-11-21 16:42:19,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:42:19,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:42:19,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:42:19,739 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 16:42:19,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:42:19,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894913829] [2022-11-21 16:42:19,740 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894913829] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:42:19,741 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:42:19,741 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 16:42:19,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388683856] [2022-11-21 16:42:19,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:42:19,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-21 16:42:19,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:42:19,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-21 16:42:19,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-21 16:42:19,806 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 165 [2022-11-21 16:42:19,814 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 154 transitions, 320 flow. Second operand has 2 states, 2 states have (on average 153.0) internal successors, (306), 2 states have internal predecessors, (306), 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 16:42:19,815 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:42:19,815 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 165 [2022-11-21 16:42:19,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:42:19,953 INFO L130 PetriNetUnfolder]: 13/178 cut-off events. [2022-11-21 16:42:19,954 INFO L131 PetriNetUnfolder]: For 22/23 co-relation queries the response was YES. [2022-11-21 16:42:19,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 212 conditions, 178 events. 13/178 cut-off events. For 22/23 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 186 event pairs, 3 based on Foata normal form. 16/181 useless extension candidates. Maximal degree in co-relation 123. Up to 19 conditions per place. [2022-11-21 16:42:19,959 INFO L137 encePairwiseOnDemand]: 156/165 looper letters, 6 selfloop transitions, 0 changer transitions 5/145 dead transitions. [2022-11-21 16:42:19,960 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 145 transitions, 314 flow [2022-11-21 16:42:19,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-21 16:42:19,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-21 16:42:19,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 313 transitions. [2022-11-21 16:42:19,985 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9484848484848485 [2022-11-21 16:42:19,986 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 313 transitions. [2022-11-21 16:42:19,987 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 313 transitions. [2022-11-21 16:42:19,992 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:42:20,001 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 313 transitions. [2022-11-21 16:42:20,008 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 156.5) internal successors, (313), 2 states have internal predecessors, (313), 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 16:42:20,018 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 165.0) internal successors, (495), 3 states have internal predecessors, (495), 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 16:42:20,018 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 165.0) internal successors, (495), 3 states have internal predecessors, (495), 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 16:42:20,021 INFO L175 Difference]: Start difference. First operand has 148 places, 154 transitions, 320 flow. Second operand 2 states and 313 transitions. [2022-11-21 16:42:20,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 145 transitions, 314 flow [2022-11-21 16:42:20,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 145 transitions, 306 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-21 16:42:20,036 INFO L231 Difference]: Finished difference. Result has 145 places, 140 transitions, 284 flow [2022-11-21 16:42:20,039 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=294, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=284, PETRI_PLACES=145, PETRI_TRANSITIONS=140} [2022-11-21 16:42:20,046 INFO L288 CegarLoopForPetriNet]: 148 programPoint places, -3 predicate places. [2022-11-21 16:42:20,046 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 140 transitions, 284 flow [2022-11-21 16:42:20,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 153.0) internal successors, (306), 2 states have internal predecessors, (306), 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 16:42:20,047 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:42:20,048 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] [2022-11-21 16:42:20,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 16:42:20,048 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:42:20,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:42:20,050 INFO L85 PathProgramCache]: Analyzing trace with hash 1994540390, now seen corresponding path program 1 times [2022-11-21 16:42:20,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:42:20,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423980818] [2022-11-21 16:42:20,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:42:20,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:42:20,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:42:20,746 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 16:42:20,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:42:20,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423980818] [2022-11-21 16:42:20,747 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423980818] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:42:20,747 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:42:20,747 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 16:42:20,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580732576] [2022-11-21 16:42:20,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:42:20,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 16:42:20,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:42:20,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 16:42:20,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-21 16:42:20,753 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 165 [2022-11-21 16:42:20,754 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 140 transitions, 284 flow. Second operand has 5 states, 5 states have (on average 128.0) internal successors, (640), 5 states have internal predecessors, (640), 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 16:42:20,754 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:42:20,755 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 165 [2022-11-21 16:42:20,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:42:20,917 INFO L130 PetriNetUnfolder]: 14/189 cut-off events. [2022-11-21 16:42:20,918 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-11-21 16:42:20,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 241 conditions, 189 events. 14/189 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 240 event pairs, 0 based on Foata normal form. 1/182 useless extension candidates. Maximal degree in co-relation 238. Up to 23 conditions per place. [2022-11-21 16:42:20,919 INFO L137 encePairwiseOnDemand]: 159/165 looper letters, 28 selfloop transitions, 3 changer transitions 4/148 dead transitions. [2022-11-21 16:42:20,920 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 148 transitions, 373 flow [2022-11-21 16:42:20,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 16:42:20,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 16:42:20,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 651 transitions. [2022-11-21 16:42:20,937 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7890909090909091 [2022-11-21 16:42:20,937 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 651 transitions. [2022-11-21 16:42:20,937 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 651 transitions. [2022-11-21 16:42:20,938 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:42:20,938 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 651 transitions. [2022-11-21 16:42:20,940 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 130.2) internal successors, (651), 5 states have internal predecessors, (651), 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 16:42:20,944 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 165.0) internal successors, (990), 6 states have internal predecessors, (990), 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 16:42:20,945 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 165.0) internal successors, (990), 6 states have internal predecessors, (990), 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 16:42:20,945 INFO L175 Difference]: Start difference. First operand has 145 places, 140 transitions, 284 flow. Second operand 5 states and 651 transitions. [2022-11-21 16:42:20,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 148 transitions, 373 flow [2022-11-21 16:42:20,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 148 transitions, 373 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-21 16:42:20,950 INFO L231 Difference]: Finished difference. Result has 147 places, 142 transitions, 307 flow [2022-11-21 16:42:20,951 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=307, PETRI_PLACES=147, PETRI_TRANSITIONS=142} [2022-11-21 16:42:20,952 INFO L288 CegarLoopForPetriNet]: 148 programPoint places, -1 predicate places. [2022-11-21 16:42:20,952 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 142 transitions, 307 flow [2022-11-21 16:42:20,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 128.0) internal successors, (640), 5 states have internal predecessors, (640), 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 16:42:20,953 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:42:20,953 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] [2022-11-21 16:42:20,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-21 16:42:20,954 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:42:20,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:42:20,955 INFO L85 PathProgramCache]: Analyzing trace with hash 353416500, now seen corresponding path program 1 times [2022-11-21 16:42:20,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:42:20,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635477082] [2022-11-21 16:42:20,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:42:20,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:42:21,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:42:21,191 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 16:42:21,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:42:21,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635477082] [2022-11-21 16:42:21,192 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635477082] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:42:21,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [975579932] [2022-11-21 16:42:21,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:42:21,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:42:21,193 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32650ef8-0cc2-4c60-b5a3-e539f9234e69/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:42:21,199 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32650ef8-0cc2-4c60-b5a3-e539f9234e69/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:42:21,230 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32650ef8-0cc2-4c60-b5a3-e539f9234e69/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-21 16:42:21,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:42:21,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-21 16:42:21,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:42:21,933 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:42:21,933 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:42:21,934 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [975579932] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:42:21,934 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 16:42:21,934 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2022-11-21 16:42:21,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321067955] [2022-11-21 16:42:21,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:42:21,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 16:42:21,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:42:21,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 16:42:21,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-11-21 16:42:21,939 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 165 [2022-11-21 16:42:21,940 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 142 transitions, 307 flow. Second operand has 7 states, 7 states have (on average 124.57142857142857) internal successors, (872), 7 states have internal predecessors, (872), 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 16:42:21,941 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:42:21,941 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 165 [2022-11-21 16:42:21,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:42:22,214 INFO L130 PetriNetUnfolder]: 15/265 cut-off events. [2022-11-21 16:42:22,214 INFO L131 PetriNetUnfolder]: For 28/31 co-relation queries the response was YES. [2022-11-21 16:42:22,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 370 conditions, 265 events. 15/265 cut-off events. For 28/31 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 506 event pairs, 2 based on Foata normal form. 4/253 useless extension candidates. Maximal degree in co-relation 363. Up to 37 conditions per place. [2022-11-21 16:42:22,217 INFO L137 encePairwiseOnDemand]: 153/165 looper letters, 31 selfloop transitions, 9 changer transitions 17/163 dead transitions. [2022-11-21 16:42:22,217 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 163 transitions, 467 flow [2022-11-21 16:42:22,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-21 16:42:22,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-21 16:42:22,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1267 transitions. [2022-11-21 16:42:22,222 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7678787878787878 [2022-11-21 16:42:22,223 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1267 transitions. [2022-11-21 16:42:22,223 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1267 transitions. [2022-11-21 16:42:22,224 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:42:22,224 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1267 transitions. [2022-11-21 16:42:22,229 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 126.7) internal successors, (1267), 10 states have internal predecessors, (1267), 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 16:42:22,238 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 165.0) internal successors, (1815), 11 states have internal predecessors, (1815), 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 16:42:22,239 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 165.0) internal successors, (1815), 11 states have internal predecessors, (1815), 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 16:42:22,240 INFO L175 Difference]: Start difference. First operand has 147 places, 142 transitions, 307 flow. Second operand 10 states and 1267 transitions. [2022-11-21 16:42:22,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 163 transitions, 467 flow [2022-11-21 16:42:22,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 163 transitions, 460 flow, removed 2 selfloop flow, removed 3 redundant places. [2022-11-21 16:42:22,249 INFO L231 Difference]: Finished difference. Result has 153 places, 143 transitions, 332 flow [2022-11-21 16:42:22,250 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=332, PETRI_PLACES=153, PETRI_TRANSITIONS=143} [2022-11-21 16:42:22,255 INFO L288 CegarLoopForPetriNet]: 148 programPoint places, 5 predicate places. [2022-11-21 16:42:22,255 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 143 transitions, 332 flow [2022-11-21 16:42:22,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 124.57142857142857) internal successors, (872), 7 states have internal predecessors, (872), 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 16:42:22,257 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:42:22,257 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:42:22,273 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32650ef8-0cc2-4c60-b5a3-e539f9234e69/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-21 16:42:22,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32650ef8-0cc2-4c60-b5a3-e539f9234e69/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-11-21 16:42:22,465 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:42:22,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:42:22,466 INFO L85 PathProgramCache]: Analyzing trace with hash -201493965, now seen corresponding path program 1 times [2022-11-21 16:42:22,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:42:22,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475278725] [2022-11-21 16:42:22,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:42:22,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:42:22,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:42:22,681 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 16:42:22,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:42:22,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475278725] [2022-11-21 16:42:22,682 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475278725] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:42:22,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1757217857] [2022-11-21 16:42:22,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:42:22,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:42:22,683 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32650ef8-0cc2-4c60-b5a3-e539f9234e69/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:42:22,684 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32650ef8-0cc2-4c60-b5a3-e539f9234e69/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:42:22,706 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32650ef8-0cc2-4c60-b5a3-e539f9234e69/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-21 16:42:22,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:42:22,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-21 16:42:22,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:42:22,887 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 16:42:22,887 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:42:22,949 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 16:42:22,950 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1757217857] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:42:22,950 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 16:42:22,950 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2022-11-21 16:42:22,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099603768] [2022-11-21 16:42:22,951 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 16:42:22,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-21 16:42:22,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:42:22,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-21 16:42:22,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-21 16:42:22,955 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 165 [2022-11-21 16:42:22,957 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 143 transitions, 332 flow. Second operand has 9 states, 9 states have (on average 139.55555555555554) internal successors, (1256), 9 states have internal predecessors, (1256), 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 16:42:22,957 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:42:22,957 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 165 [2022-11-21 16:42:22,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:42:23,384 INFO L130 PetriNetUnfolder]: 145/476 cut-off events. [2022-11-21 16:42:23,384 INFO L131 PetriNetUnfolder]: For 53/53 co-relation queries the response was YES. [2022-11-21 16:42:23,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 871 conditions, 476 events. 145/476 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1922 event pairs, 1 based on Foata normal form. 0/432 useless extension candidates. Maximal degree in co-relation 864. Up to 56 conditions per place. [2022-11-21 16:42:23,391 INFO L137 encePairwiseOnDemand]: 157/165 looper letters, 68 selfloop transitions, 26 changer transitions 0/217 dead transitions. [2022-11-21 16:42:23,391 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 217 transitions, 721 flow [2022-11-21 16:42:23,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-21 16:42:23,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-21 16:42:23,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2008 transitions. [2022-11-21 16:42:23,397 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8692640692640693 [2022-11-21 16:42:23,397 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2008 transitions. [2022-11-21 16:42:23,398 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2008 transitions. [2022-11-21 16:42:23,399 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:42:23,399 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2008 transitions. [2022-11-21 16:42:23,406 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 143.42857142857142) internal successors, (2008), 14 states have internal predecessors, (2008), 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 16:42:23,413 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 165.0) internal successors, (2475), 15 states have internal predecessors, (2475), 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 16:42:23,415 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 165.0) internal successors, (2475), 15 states have internal predecessors, (2475), 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 16:42:23,416 INFO L175 Difference]: Start difference. First operand has 153 places, 143 transitions, 332 flow. Second operand 14 states and 2008 transitions. [2022-11-21 16:42:23,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 217 transitions, 721 flow [2022-11-21 16:42:23,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 217 transitions, 705 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-21 16:42:23,426 INFO L231 Difference]: Finished difference. Result has 165 places, 171 transitions, 482 flow [2022-11-21 16:42:23,427 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=482, PETRI_PLACES=165, PETRI_TRANSITIONS=171} [2022-11-21 16:42:23,429 INFO L288 CegarLoopForPetriNet]: 148 programPoint places, 17 predicate places. [2022-11-21 16:42:23,429 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 171 transitions, 482 flow [2022-11-21 16:42:23,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 139.55555555555554) internal successors, (1256), 9 states have internal predecessors, (1256), 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 16:42:23,431 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:42:23,431 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] [2022-11-21 16:42:23,443 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32650ef8-0cc2-4c60-b5a3-e539f9234e69/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-21 16:42:23,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32650ef8-0cc2-4c60-b5a3-e539f9234e69/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:42:23,638 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:42:23,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:42:23,638 INFO L85 PathProgramCache]: Analyzing trace with hash -1225427711, now seen corresponding path program 1 times [2022-11-21 16:42:23,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:42:23,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726832620] [2022-11-21 16:42:23,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:42:23,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:42:23,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:42:23,807 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 16:42:23,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:42:23,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726832620] [2022-11-21 16:42:23,808 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726832620] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:42:23,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1966868468] [2022-11-21 16:42:23,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:42:23,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:42:23,809 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32650ef8-0cc2-4c60-b5a3-e539f9234e69/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:42:23,810 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32650ef8-0cc2-4c60-b5a3-e539f9234e69/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:42:23,830 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32650ef8-0cc2-4c60-b5a3-e539f9234e69/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-21 16:42:23,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:42:23,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-21 16:42:23,973 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:42:24,282 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 16:42:24,282 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:42:24,283 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1966868468] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:42:24,283 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 16:42:24,283 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2022-11-21 16:42:24,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941504511] [2022-11-21 16:42:24,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:42:24,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 16:42:24,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:42:24,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 16:42:24,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-11-21 16:42:24,289 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 165 [2022-11-21 16:42:24,291 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 171 transitions, 482 flow. Second operand has 7 states, 7 states have (on average 125.14285714285714) internal successors, (876), 7 states have internal predecessors, (876), 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 16:42:24,291 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:42:24,291 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 165 [2022-11-21 16:42:24,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:42:24,551 INFO L130 PetriNetUnfolder]: 65/414 cut-off events. [2022-11-21 16:42:24,552 INFO L131 PetriNetUnfolder]: For 182/197 co-relation queries the response was YES. [2022-11-21 16:42:24,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 765 conditions, 414 events. 65/414 cut-off events. For 182/197 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1524 event pairs, 7 based on Foata normal form. 12/413 useless extension candidates. Maximal degree in co-relation 751. Up to 68 conditions per place. [2022-11-21 16:42:24,555 INFO L137 encePairwiseOnDemand]: 155/165 looper letters, 34 selfloop transitions, 7 changer transitions 5/180 dead transitions. [2022-11-21 16:42:24,556 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 180 transitions, 596 flow [2022-11-21 16:42:24,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-21 16:42:24,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-21 16:42:24,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1013 transitions. [2022-11-21 16:42:24,559 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7674242424242425 [2022-11-21 16:42:24,559 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1013 transitions. [2022-11-21 16:42:24,559 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1013 transitions. [2022-11-21 16:42:24,560 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:42:24,560 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1013 transitions. [2022-11-21 16:42:24,563 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 126.625) internal successors, (1013), 8 states have internal predecessors, (1013), 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 16:42:24,565 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 165.0) internal successors, (1485), 9 states have internal predecessors, (1485), 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 16:42:24,566 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 165.0) internal successors, (1485), 9 states have internal predecessors, (1485), 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 16:42:24,567 INFO L175 Difference]: Start difference. First operand has 165 places, 171 transitions, 482 flow. Second operand 8 states and 1013 transitions. [2022-11-21 16:42:24,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 180 transitions, 596 flow [2022-11-21 16:42:24,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 180 transitions, 596 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-21 16:42:24,573 INFO L231 Difference]: Finished difference. Result has 174 places, 172 transitions, 508 flow [2022-11-21 16:42:24,574 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=482, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=508, PETRI_PLACES=174, PETRI_TRANSITIONS=172} [2022-11-21 16:42:24,575 INFO L288 CegarLoopForPetriNet]: 148 programPoint places, 26 predicate places. [2022-11-21 16:42:24,575 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 172 transitions, 508 flow [2022-11-21 16:42:24,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 125.14285714285714) internal successors, (876), 7 states have internal predecessors, (876), 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 16:42:24,576 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:42:24,576 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] [2022-11-21 16:42:24,587 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32650ef8-0cc2-4c60-b5a3-e539f9234e69/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-21 16:42:24,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32650ef8-0cc2-4c60-b5a3-e539f9234e69/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:42:24,782 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:42:24,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:42:24,783 INFO L85 PathProgramCache]: Analyzing trace with hash -1694617530, now seen corresponding path program 1 times [2022-11-21 16:42:24,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:42:24,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649666828] [2022-11-21 16:42:24,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:42:24,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:42:24,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:42:24,932 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-21 16:42:24,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:42:24,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649666828] [2022-11-21 16:42:24,933 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649666828] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:42:24,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2064174241] [2022-11-21 16:42:24,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:42:24,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:42:24,934 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32650ef8-0cc2-4c60-b5a3-e539f9234e69/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:42:24,936 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32650ef8-0cc2-4c60-b5a3-e539f9234e69/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:42:24,960 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32650ef8-0cc2-4c60-b5a3-e539f9234e69/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-21 16:42:25,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:42:25,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-21 16:42:25,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:42:25,125 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-21 16:42:25,125 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:42:25,162 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-21 16:42:25,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2064174241] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:42:25,163 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 16:42:25,163 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2022-11-21 16:42:25,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945771732] [2022-11-21 16:42:25,164 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 16:42:25,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-21 16:42:25,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:42:25,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-21 16:42:25,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-21 16:42:25,168 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 165 [2022-11-21 16:42:25,170 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 172 transitions, 508 flow. Second operand has 9 states, 9 states have (on average 139.44444444444446) internal successors, (1255), 9 states have internal predecessors, (1255), 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 16:42:25,170 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:42:25,170 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 165 [2022-11-21 16:42:25,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:42:25,634 INFO L130 PetriNetUnfolder]: 225/688 cut-off events. [2022-11-21 16:42:25,635 INFO L131 PetriNetUnfolder]: For 610/610 co-relation queries the response was YES. [2022-11-21 16:42:25,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1747 conditions, 688 events. 225/688 cut-off events. For 610/610 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 3188 event pairs, 10 based on Foata normal form. 8/690 useless extension candidates. Maximal degree in co-relation 1730. Up to 87 conditions per place. [2022-11-21 16:42:25,642 INFO L137 encePairwiseOnDemand]: 157/165 looper letters, 85 selfloop transitions, 63 changer transitions 0/272 dead transitions. [2022-11-21 16:42:25,642 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 272 transitions, 1288 flow [2022-11-21 16:42:25,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-21 16:42:25,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-21 16:42:25,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2005 transitions. [2022-11-21 16:42:25,649 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8679653679653679 [2022-11-21 16:42:25,649 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2005 transitions. [2022-11-21 16:42:25,649 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2005 transitions. [2022-11-21 16:42:25,651 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:42:25,651 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2005 transitions. [2022-11-21 16:42:25,656 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 143.21428571428572) internal successors, (2005), 14 states have internal predecessors, (2005), 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 16:42:25,661 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 165.0) internal successors, (2475), 15 states have internal predecessors, (2475), 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 16:42:25,664 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 165.0) internal successors, (2475), 15 states have internal predecessors, (2475), 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 16:42:25,665 INFO L175 Difference]: Start difference. First operand has 174 places, 172 transitions, 508 flow. Second operand 14 states and 2005 transitions. [2022-11-21 16:42:25,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 272 transitions, 1288 flow [2022-11-21 16:42:25,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 272 transitions, 1262 flow, removed 7 selfloop flow, removed 6 redundant places. [2022-11-21 16:42:25,676 INFO L231 Difference]: Finished difference. Result has 189 places, 220 transitions, 1039 flow [2022-11-21 16:42:25,677 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=492, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1039, PETRI_PLACES=189, PETRI_TRANSITIONS=220} [2022-11-21 16:42:25,681 INFO L288 CegarLoopForPetriNet]: 148 programPoint places, 41 predicate places. [2022-11-21 16:42:25,681 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 220 transitions, 1039 flow [2022-11-21 16:42:25,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 139.44444444444446) internal successors, (1255), 9 states have internal predecessors, (1255), 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 16:42:25,682 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:42:25,682 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] [2022-11-21 16:42:25,695 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32650ef8-0cc2-4c60-b5a3-e539f9234e69/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-21 16:42:25,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32650ef8-0cc2-4c60-b5a3-e539f9234e69/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-21 16:42:25,889 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:42:25,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:42:25,890 INFO L85 PathProgramCache]: Analyzing trace with hash -787524414, now seen corresponding path program 2 times [2022-11-21 16:42:25,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:42:25,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034250474] [2022-11-21 16:42:25,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:42:25,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:42:25,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:42:26,060 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-21 16:42:26,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:42:26,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034250474] [2022-11-21 16:42:26,060 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034250474] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:42:26,061 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:42:26,061 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 16:42:26,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373629929] [2022-11-21 16:42:26,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:42:26,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 16:42:26,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:42:26,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 16:42:26,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-21 16:42:26,064 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 165 [2022-11-21 16:42:26,065 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 220 transitions, 1039 flow. Second operand has 5 states, 5 states have (on average 139.8) internal successors, (699), 5 states have internal predecessors, (699), 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 16:42:26,065 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:42:26,066 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 165 [2022-11-21 16:42:26,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:42:26,331 INFO L130 PetriNetUnfolder]: 225/705 cut-off events. [2022-11-21 16:42:26,332 INFO L131 PetriNetUnfolder]: For 1481/1498 co-relation queries the response was YES. [2022-11-21 16:42:26,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2145 conditions, 705 events. 225/705 cut-off events. For 1481/1498 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3417 event pairs, 69 based on Foata normal form. 3/700 useless extension candidates. Maximal degree in co-relation 2120. Up to 231 conditions per place. [2022-11-21 16:42:26,340 INFO L137 encePairwiseOnDemand]: 158/165 looper letters, 95 selfloop transitions, 21 changer transitions 6/246 dead transitions. [2022-11-21 16:42:26,340 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 246 transitions, 1450 flow [2022-11-21 16:42:26,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-21 16:42:26,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-21 16:42:26,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 865 transitions. [2022-11-21 16:42:26,343 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8737373737373737 [2022-11-21 16:42:26,343 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 865 transitions. [2022-11-21 16:42:26,343 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 865 transitions. [2022-11-21 16:42:26,344 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:42:26,344 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 865 transitions. [2022-11-21 16:42:26,346 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 144.16666666666666) internal successors, (865), 6 states have internal predecessors, (865), 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 16:42:26,349 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 165.0) internal successors, (1155), 7 states have internal predecessors, (1155), 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 16:42:26,349 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 165.0) internal successors, (1155), 7 states have internal predecessors, (1155), 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 16:42:26,350 INFO L175 Difference]: Start difference. First operand has 189 places, 220 transitions, 1039 flow. Second operand 6 states and 865 transitions. [2022-11-21 16:42:26,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 246 transitions, 1450 flow [2022-11-21 16:42:26,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 246 transitions, 1380 flow, removed 35 selfloop flow, removed 0 redundant places. [2022-11-21 16:42:26,366 INFO L231 Difference]: Finished difference. Result has 196 places, 220 transitions, 1043 flow [2022-11-21 16:42:26,367 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=995, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1043, PETRI_PLACES=196, PETRI_TRANSITIONS=220} [2022-11-21 16:42:26,368 INFO L288 CegarLoopForPetriNet]: 148 programPoint places, 48 predicate places. [2022-11-21 16:42:26,368 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 220 transitions, 1043 flow [2022-11-21 16:42:26,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 139.8) internal successors, (699), 5 states have internal predecessors, (699), 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 16:42:26,369 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:42:26,369 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] [2022-11-21 16:42:26,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-21 16:42:26,370 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:42:26,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:42:26,370 INFO L85 PathProgramCache]: Analyzing trace with hash 674420228, now seen corresponding path program 3 times [2022-11-21 16:42:26,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:42:26,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191018425] [2022-11-21 16:42:26,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:42:26,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:42:26,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:42:26,585 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-21 16:42:26,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:42:26,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191018425] [2022-11-21 16:42:26,586 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191018425] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:42:26,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1308338652] [2022-11-21 16:42:26,586 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-21 16:42:26,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:42:26,587 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32650ef8-0cc2-4c60-b5a3-e539f9234e69/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:42:26,589 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32650ef8-0cc2-4c60-b5a3-e539f9234e69/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:42:26,602 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32650ef8-0cc2-4c60-b5a3-e539f9234e69/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-21 16:42:26,738 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-21 16:42:26,738 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 16:42:26,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-21 16:42:26,743 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:42:26,803 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-21 16:42:26,803 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:42:26,839 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-21 16:42:26,839 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1308338652] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:42:26,839 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 16:42:26,839 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2022-11-21 16:42:26,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148844336] [2022-11-21 16:42:26,840 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 16:42:26,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-21 16:42:26,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:42:26,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-21 16:42:26,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-21 16:42:26,844 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 165 [2022-11-21 16:42:26,846 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 220 transitions, 1043 flow. Second operand has 11 states, 11 states have (on average 139.72727272727272) internal successors, (1537), 11 states have internal predecessors, (1537), 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 16:42:26,846 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:42:26,846 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 165 [2022-11-21 16:42:26,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:42:27,221 INFO L130 PetriNetUnfolder]: 257/823 cut-off events. [2022-11-21 16:42:27,221 INFO L131 PetriNetUnfolder]: For 1745/1757 co-relation queries the response was YES. [2022-11-21 16:42:27,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2510 conditions, 823 events. 257/823 cut-off events. For 1745/1757 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 4461 event pairs, 60 based on Foata normal form. 14/829 useless extension candidates. Maximal degree in co-relation 2482. Up to 146 conditions per place. [2022-11-21 16:42:27,231 INFO L137 encePairwiseOnDemand]: 157/165 looper letters, 99 selfloop transitions, 56 changer transitions 1/280 dead transitions. [2022-11-21 16:42:27,231 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 280 transitions, 1716 flow [2022-11-21 16:42:27,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-21 16:42:27,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-21 16:42:27,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1309 transitions. [2022-11-21 16:42:27,235 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8814814814814815 [2022-11-21 16:42:27,235 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1309 transitions. [2022-11-21 16:42:27,235 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1309 transitions. [2022-11-21 16:42:27,236 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:42:27,237 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1309 transitions. [2022-11-21 16:42:27,240 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 145.44444444444446) internal successors, (1309), 9 states have internal predecessors, (1309), 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 16:42:27,243 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 165.0) internal successors, (1650), 10 states have internal predecessors, (1650), 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 16:42:27,244 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 165.0) internal successors, (1650), 10 states have internal predecessors, (1650), 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 16:42:27,244 INFO L175 Difference]: Start difference. First operand has 196 places, 220 transitions, 1043 flow. Second operand 9 states and 1309 transitions. [2022-11-21 16:42:27,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 280 transitions, 1716 flow [2022-11-21 16:42:27,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 280 transitions, 1686 flow, removed 2 selfloop flow, removed 3 redundant places. [2022-11-21 16:42:27,263 INFO L231 Difference]: Finished difference. Result has 205 places, 239 transitions, 1386 flow [2022-11-21 16:42:27,263 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=1020, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1386, PETRI_PLACES=205, PETRI_TRANSITIONS=239} [2022-11-21 16:42:27,264 INFO L288 CegarLoopForPetriNet]: 148 programPoint places, 57 predicate places. [2022-11-21 16:42:27,264 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 239 transitions, 1386 flow [2022-11-21 16:42:27,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 139.72727272727272) internal successors, (1537), 11 states have internal predecessors, (1537), 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 16:42:27,265 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:42:27,266 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] [2022-11-21 16:42:27,277 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32650ef8-0cc2-4c60-b5a3-e539f9234e69/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-21 16:42:27,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32650ef8-0cc2-4c60-b5a3-e539f9234e69/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:42:27,478 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:42:27,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:42:27,479 INFO L85 PathProgramCache]: Analyzing trace with hash -753816634, now seen corresponding path program 4 times [2022-11-21 16:42:27,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:42:27,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773808319] [2022-11-21 16:42:27,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:42:27,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:42:27,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:42:27,632 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-21 16:42:27,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:42:27,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773808319] [2022-11-21 16:42:27,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773808319] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:42:27,633 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:42:27,634 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 16:42:27,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817799735] [2022-11-21 16:42:27,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:42:27,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 16:42:27,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:42:27,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 16:42:27,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-21 16:42:27,637 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 165 [2022-11-21 16:42:27,638 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 239 transitions, 1386 flow. Second operand has 5 states, 5 states have (on average 139.8) internal successors, (699), 5 states have internal predecessors, (699), 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 16:42:27,638 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:42:27,638 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 165 [2022-11-21 16:42:27,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:42:27,956 INFO L130 PetriNetUnfolder]: 254/840 cut-off events. [2022-11-21 16:42:27,956 INFO L131 PetriNetUnfolder]: For 2488/2492 co-relation queries the response was YES. [2022-11-21 16:42:27,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2730 conditions, 840 events. 254/840 cut-off events. For 2488/2492 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 4619 event pairs, 64 based on Foata normal form. 3/832 useless extension candidates. Maximal degree in co-relation 2698. Up to 278 conditions per place. [2022-11-21 16:42:27,967 INFO L137 encePairwiseOnDemand]: 157/165 looper letters, 119 selfloop transitions, 31 changer transitions 7/281 dead transitions. [2022-11-21 16:42:27,967 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 281 transitions, 1999 flow [2022-11-21 16:42:27,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-21 16:42:27,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-21 16:42:27,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 882 transitions. [2022-11-21 16:42:27,970 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8909090909090909 [2022-11-21 16:42:27,970 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 882 transitions. [2022-11-21 16:42:27,971 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 882 transitions. [2022-11-21 16:42:27,971 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:42:27,971 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 882 transitions. [2022-11-21 16:42:27,974 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 147.0) internal successors, (882), 6 states have internal predecessors, (882), 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 16:42:27,976 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 165.0) internal successors, (1155), 7 states have internal predecessors, (1155), 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 16:42:27,977 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 165.0) internal successors, (1155), 7 states have internal predecessors, (1155), 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 16:42:27,977 INFO L175 Difference]: Start difference. First operand has 205 places, 239 transitions, 1386 flow. Second operand 6 states and 882 transitions. [2022-11-21 16:42:27,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 281 transitions, 1999 flow [2022-11-21 16:42:27,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 281 transitions, 1862 flow, removed 23 selfloop flow, removed 5 redundant places. [2022-11-21 16:42:28,001 INFO L231 Difference]: Finished difference. Result has 209 places, 242 transitions, 1418 flow [2022-11-21 16:42:28,001 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=1266, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1418, PETRI_PLACES=209, PETRI_TRANSITIONS=242} [2022-11-21 16:42:28,002 INFO L288 CegarLoopForPetriNet]: 148 programPoint places, 61 predicate places. [2022-11-21 16:42:28,002 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 242 transitions, 1418 flow [2022-11-21 16:42:28,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 139.8) internal successors, (699), 5 states have internal predecessors, (699), 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 16:42:28,003 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:42:28,003 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] [2022-11-21 16:42:28,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-21 16:42:28,004 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:42:28,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:42:28,005 INFO L85 PathProgramCache]: Analyzing trace with hash 343024828, now seen corresponding path program 1 times [2022-11-21 16:42:28,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:42:28,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634623757] [2022-11-21 16:42:28,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:42:28,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:42:28,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:42:28,157 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-21 16:42:28,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:42:28,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634623757] [2022-11-21 16:42:28,158 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634623757] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:42:28,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1578116992] [2022-11-21 16:42:28,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:42:28,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:42:28,158 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32650ef8-0cc2-4c60-b5a3-e539f9234e69/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:42:28,160 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32650ef8-0cc2-4c60-b5a3-e539f9234e69/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:42:28,179 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32650ef8-0cc2-4c60-b5a3-e539f9234e69/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-21 16:42:28,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:42:28,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-21 16:42:28,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:42:28,409 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-21 16:42:28,409 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:42:28,468 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-21 16:42:28,468 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1578116992] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:42:28,468 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 16:42:28,468 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2022-11-21 16:42:28,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699436525] [2022-11-21 16:42:28,469 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 16:42:28,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-21 16:42:28,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:42:28,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-21 16:42:28,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2022-11-21 16:42:28,473 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 165 [2022-11-21 16:42:28,475 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 242 transitions, 1418 flow. Second operand has 11 states, 11 states have (on average 139.8181818181818) internal successors, (1538), 11 states have internal predecessors, (1538), 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 16:42:28,475 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:42:28,475 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 165 [2022-11-21 16:42:28,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:42:29,033 INFO L130 PetriNetUnfolder]: 310/1065 cut-off events. [2022-11-21 16:42:29,033 INFO L131 PetriNetUnfolder]: For 2730/2746 co-relation queries the response was YES. [2022-11-21 16:42:29,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3251 conditions, 1065 events. 310/1065 cut-off events. For 2730/2746 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 6677 event pairs, 40 based on Foata normal form. 8/1061 useless extension candidates. Maximal degree in co-relation 3219. Up to 138 conditions per place. [2022-11-21 16:42:29,045 INFO L137 encePairwiseOnDemand]: 157/165 looper letters, 112 selfloop transitions, 81 changer transitions 1/318 dead transitions. [2022-11-21 16:42:29,046 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 318 transitions, 2220 flow [2022-11-21 16:42:29,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-21 16:42:29,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-21 16:42:29,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1877 transitions. [2022-11-21 16:42:29,051 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.875058275058275 [2022-11-21 16:42:29,051 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1877 transitions. [2022-11-21 16:42:29,051 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1877 transitions. [2022-11-21 16:42:29,052 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:42:29,052 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1877 transitions. [2022-11-21 16:42:29,057 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 144.3846153846154) internal successors, (1877), 13 states have internal predecessors, (1877), 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 16:42:29,061 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 165.0) internal successors, (2310), 14 states have internal predecessors, (2310), 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 16:42:29,062 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 165.0) internal successors, (2310), 14 states have internal predecessors, (2310), 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 16:42:29,062 INFO L175 Difference]: Start difference. First operand has 209 places, 242 transitions, 1418 flow. Second operand 13 states and 1877 transitions. [2022-11-21 16:42:29,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 318 transitions, 2220 flow [2022-11-21 16:42:29,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 318 transitions, 2173 flow, removed 9 selfloop flow, removed 1 redundant places. [2022-11-21 16:42:29,086 INFO L231 Difference]: Finished difference. Result has 224 places, 262 transitions, 1805 flow [2022-11-21 16:42:29,087 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=1379, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1805, PETRI_PLACES=224, PETRI_TRANSITIONS=262} [2022-11-21 16:42:29,088 INFO L288 CegarLoopForPetriNet]: 148 programPoint places, 76 predicate places. [2022-11-21 16:42:29,088 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 262 transitions, 1805 flow [2022-11-21 16:42:29,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 139.8181818181818) internal successors, (1538), 11 states have internal predecessors, (1538), 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 16:42:29,089 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:42:29,089 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] [2022-11-21 16:42:29,099 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32650ef8-0cc2-4c60-b5a3-e539f9234e69/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-11-21 16:42:29,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32650ef8-0cc2-4c60-b5a3-e539f9234e69/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-21 16:42:29,299 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:42:29,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:42:29,299 INFO L85 PathProgramCache]: Analyzing trace with hash -646540378, now seen corresponding path program 2 times [2022-11-21 16:42:29,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:42:29,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233388289] [2022-11-21 16:42:29,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:42:29,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:42:29,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:42:29,434 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-21 16:42:29,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:42:29,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233388289] [2022-11-21 16:42:29,434 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233388289] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:42:29,435 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:42:29,435 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 16:42:29,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080862585] [2022-11-21 16:42:29,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:42:29,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 16:42:29,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:42:29,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 16:42:29,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-21 16:42:29,438 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 165 [2022-11-21 16:42:29,439 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 262 transitions, 1805 flow. Second operand has 5 states, 5 states have (on average 139.8) internal successors, (699), 5 states have internal predecessors, (699), 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 16:42:29,439 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:42:29,439 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 165 [2022-11-21 16:42:29,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:42:29,753 INFO L130 PetriNetUnfolder]: 299/978 cut-off events. [2022-11-21 16:42:29,753 INFO L131 PetriNetUnfolder]: For 3609/3625 co-relation queries the response was YES. [2022-11-21 16:42:29,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3282 conditions, 978 events. 299/978 cut-off events. For 3609/3625 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 5773 event pairs, 92 based on Foata normal form. 6/973 useless extension candidates. Maximal degree in co-relation 3247. Up to 371 conditions per place. [2022-11-21 16:42:29,765 INFO L137 encePairwiseOnDemand]: 157/165 looper letters, 128 selfloop transitions, 31 changer transitions 7/290 dead transitions. [2022-11-21 16:42:29,765 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 290 transitions, 2311 flow [2022-11-21 16:42:29,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-21 16:42:29,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-21 16:42:29,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 876 transitions. [2022-11-21 16:42:29,768 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8848484848484849 [2022-11-21 16:42:29,768 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 876 transitions. [2022-11-21 16:42:29,769 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 876 transitions. [2022-11-21 16:42:29,769 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:42:29,770 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 876 transitions. [2022-11-21 16:42:29,772 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 146.0) internal successors, (876), 6 states have internal predecessors, (876), 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 16:42:29,774 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 165.0) internal successors, (1155), 7 states have internal predecessors, (1155), 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 16:42:29,775 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 165.0) internal successors, (1155), 7 states have internal predecessors, (1155), 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 16:42:29,775 INFO L175 Difference]: Start difference. First operand has 224 places, 262 transitions, 1805 flow. Second operand 6 states and 876 transitions. [2022-11-21 16:42:29,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 290 transitions, 2311 flow [2022-11-21 16:42:29,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 290 transitions, 2274 flow, removed 5 selfloop flow, removed 4 redundant places. [2022-11-21 16:42:29,800 INFO L231 Difference]: Finished difference. Result has 227 places, 262 transitions, 1845 flow [2022-11-21 16:42:29,801 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=1768, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1845, PETRI_PLACES=227, PETRI_TRANSITIONS=262} [2022-11-21 16:42:29,802 INFO L288 CegarLoopForPetriNet]: 148 programPoint places, 79 predicate places. [2022-11-21 16:42:29,802 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 262 transitions, 1845 flow [2022-11-21 16:42:29,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 139.8) internal successors, (699), 5 states have internal predecessors, (699), 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 16:42:29,802 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:42:29,803 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] [2022-11-21 16:42:29,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-21 16:42:29,803 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:42:29,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:42:29,804 INFO L85 PathProgramCache]: Analyzing trace with hash 2027393474, now seen corresponding path program 5 times [2022-11-21 16:42:29,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:42:29,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118480095] [2022-11-21 16:42:29,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:42:29,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:42:29,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:42:29,934 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-21 16:42:29,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:42:29,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118480095] [2022-11-21 16:42:29,935 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118480095] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:42:29,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [335164192] [2022-11-21 16:42:29,935 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-21 16:42:29,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:42:29,935 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32650ef8-0cc2-4c60-b5a3-e539f9234e69/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:42:29,936 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32650ef8-0cc2-4c60-b5a3-e539f9234e69/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:42:29,970 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32650ef8-0cc2-4c60-b5a3-e539f9234e69/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-21 16:42:30,088 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-21 16:42:30,089 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 16:42:30,091 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-21 16:42:30,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:42:30,148 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-21 16:42:30,149 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:42:30,189 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-21 16:42:30,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [335164192] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:42:30,189 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 16:42:30,190 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2022-11-21 16:42:30,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273276871] [2022-11-21 16:42:30,190 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 16:42:30,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-21 16:42:30,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:42:30,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-21 16:42:30,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2022-11-21 16:42:30,194 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 165 [2022-11-21 16:42:30,204 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 262 transitions, 1845 flow. Second operand has 11 states, 11 states have (on average 139.63636363636363) internal successors, (1536), 11 states have internal predecessors, (1536), 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 16:42:30,205 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:42:30,205 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 165 [2022-11-21 16:42:30,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:42:30,714 INFO L130 PetriNetUnfolder]: 305/962 cut-off events. [2022-11-21 16:42:30,714 INFO L131 PetriNetUnfolder]: For 3921/3921 co-relation queries the response was YES. [2022-11-21 16:42:30,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3329 conditions, 962 events. 305/962 cut-off events. For 3921/3921 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 5428 event pairs, 64 based on Foata normal form. 11/962 useless extension candidates. Maximal degree in co-relation 3294. Up to 141 conditions per place. [2022-11-21 16:42:30,726 INFO L137 encePairwiseOnDemand]: 157/165 looper letters, 102 selfloop transitions, 86 changer transitions 1/313 dead transitions. [2022-11-21 16:42:30,727 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 313 transitions, 2502 flow [2022-11-21 16:42:30,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-21 16:42:30,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-21 16:42:30,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1867 transitions. [2022-11-21 16:42:30,735 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8703962703962704 [2022-11-21 16:42:30,735 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1867 transitions. [2022-11-21 16:42:30,735 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1867 transitions. [2022-11-21 16:42:30,737 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:42:30,737 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1867 transitions. [2022-11-21 16:42:30,743 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 143.6153846153846) internal successors, (1867), 13 states have internal predecessors, (1867), 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 16:42:30,748 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 165.0) internal successors, (2310), 14 states have internal predecessors, (2310), 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 16:42:30,749 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 165.0) internal successors, (2310), 14 states have internal predecessors, (2310), 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 16:42:30,749 INFO L175 Difference]: Start difference. First operand has 227 places, 262 transitions, 1845 flow. Second operand 13 states and 1867 transitions. [2022-11-21 16:42:30,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 313 transitions, 2502 flow [2022-11-21 16:42:30,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 313 transitions, 2425 flow, removed 4 selfloop flow, removed 5 redundant places. [2022-11-21 16:42:30,778 INFO L231 Difference]: Finished difference. Result has 232 places, 268 transitions, 2015 flow [2022-11-21 16:42:30,779 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=1692, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2015, PETRI_PLACES=232, PETRI_TRANSITIONS=268} [2022-11-21 16:42:30,781 INFO L288 CegarLoopForPetriNet]: 148 programPoint places, 84 predicate places. [2022-11-21 16:42:30,782 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 268 transitions, 2015 flow [2022-11-21 16:42:30,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 139.63636363636363) internal successors, (1536), 11 states have internal predecessors, (1536), 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 16:42:30,782 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:42:30,783 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] [2022-11-21 16:42:30,794 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32650ef8-0cc2-4c60-b5a3-e539f9234e69/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-21 16:42:30,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32650ef8-0cc2-4c60-b5a3-e539f9234e69/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:42:30,995 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:42:30,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:42:30,995 INFO L85 PathProgramCache]: Analyzing trace with hash 1064421096, now seen corresponding path program 3 times [2022-11-21 16:42:30,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:42:30,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536559803] [2022-11-21 16:42:30,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:42:30,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:42:31,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:42:31,140 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-21 16:42:31,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:42:31,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536559803] [2022-11-21 16:42:31,140 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536559803] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:42:31,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [298511721] [2022-11-21 16:42:31,141 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-21 16:42:31,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:42:31,141 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32650ef8-0cc2-4c60-b5a3-e539f9234e69/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:42:31,142 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32650ef8-0cc2-4c60-b5a3-e539f9234e69/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:42:31,166 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32650ef8-0cc2-4c60-b5a3-e539f9234e69/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-21 16:42:31,290 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-21 16:42:31,290 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 16:42:31,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-21 16:42:31,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:42:31,377 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-21 16:42:31,378 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:42:31,425 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-21 16:42:31,426 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [298511721] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:42:31,426 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 16:42:31,426 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2022-11-21 16:42:31,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125887183] [2022-11-21 16:42:31,427 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 16:42:31,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-21 16:42:31,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:42:31,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-21 16:42:31,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-21 16:42:31,430 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 165 [2022-11-21 16:42:31,431 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 268 transitions, 2015 flow. Second operand has 11 states, 11 states have (on average 139.8181818181818) internal successors, (1538), 11 states have internal predecessors, (1538), 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 16:42:31,432 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:42:31,432 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 165 [2022-11-21 16:42:31,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:42:31,900 INFO L130 PetriNetUnfolder]: 301/935 cut-off events. [2022-11-21 16:42:31,900 INFO L131 PetriNetUnfolder]: For 4091/4091 co-relation queries the response was YES. [2022-11-21 16:42:31,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3376 conditions, 935 events. 301/935 cut-off events. For 4091/4091 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 5182 event pairs, 51 based on Foata normal form. 6/931 useless extension candidates. Maximal degree in co-relation 3342. Up to 198 conditions per place. [2022-11-21 16:42:31,911 INFO L137 encePairwiseOnDemand]: 157/165 looper letters, 108 selfloop transitions, 65 changer transitions 1/298 dead transitions. [2022-11-21 16:42:31,912 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 298 transitions, 2489 flow [2022-11-21 16:42:31,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-21 16:42:31,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-21 16:42:31,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1299 transitions. [2022-11-21 16:42:31,915 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8747474747474747 [2022-11-21 16:42:31,915 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1299 transitions. [2022-11-21 16:42:31,915 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1299 transitions. [2022-11-21 16:42:31,916 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:42:31,916 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1299 transitions. [2022-11-21 16:42:31,918 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 144.33333333333334) internal successors, (1299), 9 states have internal predecessors, (1299), 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 16:42:31,922 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 165.0) internal successors, (1650), 10 states have internal predecessors, (1650), 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 16:42:31,923 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 165.0) internal successors, (1650), 10 states have internal predecessors, (1650), 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 16:42:31,923 INFO L175 Difference]: Start difference. First operand has 232 places, 268 transitions, 2015 flow. Second operand 9 states and 1299 transitions. [2022-11-21 16:42:31,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 298 transitions, 2489 flow [2022-11-21 16:42:31,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 298 transitions, 2407 flow, removed 3 selfloop flow, removed 6 redundant places. [2022-11-21 16:42:31,950 INFO L231 Difference]: Finished difference. Result has 232 places, 268 transitions, 2081 flow [2022-11-21 16:42:31,951 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=1907, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2081, PETRI_PLACES=232, PETRI_TRANSITIONS=268} [2022-11-21 16:42:31,952 INFO L288 CegarLoopForPetriNet]: 148 programPoint places, 84 predicate places. [2022-11-21 16:42:31,952 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 268 transitions, 2081 flow [2022-11-21 16:42:31,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 139.8181818181818) internal successors, (1538), 11 states have internal predecessors, (1538), 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 16:42:31,953 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:42:31,953 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] [2022-11-21 16:42:31,964 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32650ef8-0cc2-4c60-b5a3-e539f9234e69/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-21 16:42:32,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32650ef8-0cc2-4c60-b5a3-e539f9234e69/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:42:32,164 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:42:32,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:42:32,165 INFO L85 PathProgramCache]: Analyzing trace with hash -1878094116, now seen corresponding path program 1 times [2022-11-21 16:42:32,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:42:32,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803611534] [2022-11-21 16:42:32,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:42:32,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:42:32,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:42:33,393 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 16:42:33,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:42:33,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803611534] [2022-11-21 16:42:33,394 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803611534] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:42:33,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1305098881] [2022-11-21 16:42:33,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:42:33,394 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:42:33,394 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32650ef8-0cc2-4c60-b5a3-e539f9234e69/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:42:33,396 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32650ef8-0cc2-4c60-b5a3-e539f9234e69/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:42:33,422 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32650ef8-0cc2-4c60-b5a3-e539f9234e69/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-21 16:42:33,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:42:33,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-21 16:42:33,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:42:33,856 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 10 [2022-11-21 16:42:33,899 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 16:42:33,899 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:42:33,962 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 12 [2022-11-21 16:42:34,303 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 16:42:34,303 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1305098881] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:42:34,304 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 16:42:34,304 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 11, 11] total 29 [2022-11-21 16:42:34,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284698574] [2022-11-21 16:42:34,304 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 16:42:34,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-21 16:42:34,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:42:34,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-21 16:42:34,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=719, Unknown=0, NotChecked=0, Total=812 [2022-11-21 16:42:34,308 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 165 [2022-11-21 16:42:34,311 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 268 transitions, 2081 flow. Second operand has 29 states, 29 states have (on average 80.51724137931035) internal successors, (2335), 29 states have internal predecessors, (2335), 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 16:42:34,311 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:42:34,312 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 165 [2022-11-21 16:42:34,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:42:38,545 INFO L130 PetriNetUnfolder]: 1315/4688 cut-off events. [2022-11-21 16:42:38,545 INFO L131 PetriNetUnfolder]: For 19543/19799 co-relation queries the response was YES. [2022-11-21 16:42:38,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16637 conditions, 4688 events. 1315/4688 cut-off events. For 19543/19799 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 46020 event pairs, 99 based on Foata normal form. 72/4650 useless extension candidates. Maximal degree in co-relation 16605. Up to 775 conditions per place. [2022-11-21 16:42:38,600 INFO L137 encePairwiseOnDemand]: 132/165 looper letters, 134 selfloop transitions, 59 changer transitions 50/432 dead transitions. [2022-11-21 16:42:38,600 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 432 transitions, 3000 flow [2022-11-21 16:42:38,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-11-21 16:42:38,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2022-11-21 16:42:38,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 4970 transitions. [2022-11-21 16:42:38,609 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4781144781144781 [2022-11-21 16:42:38,609 INFO L72 ComplementDD]: Start complementDD. Operand 63 states and 4970 transitions. [2022-11-21 16:42:38,610 INFO L73 IsDeterministic]: Start isDeterministic. Operand 63 states and 4970 transitions. [2022-11-21 16:42:38,612 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:42:38,612 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 63 states and 4970 transitions. [2022-11-21 16:42:38,621 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 64 states, 63 states have (on average 78.88888888888889) internal successors, (4970), 63 states have internal predecessors, (4970), 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 16:42:38,637 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 64 states, 64 states have (on average 165.0) internal successors, (10560), 64 states have internal predecessors, (10560), 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 16:42:38,641 INFO L81 ComplementDD]: Finished complementDD. Result has 64 states, 64 states have (on average 165.0) internal successors, (10560), 64 states have internal predecessors, (10560), 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 16:42:38,642 INFO L175 Difference]: Start difference. First operand has 232 places, 268 transitions, 2081 flow. Second operand 63 states and 4970 transitions. [2022-11-21 16:42:38,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 432 transitions, 3000 flow [2022-11-21 16:42:38,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 432 transitions, 2810 flow, removed 13 selfloop flow, removed 12 redundant places. [2022-11-21 16:42:38,755 INFO L231 Difference]: Finished difference. Result has 315 places, 312 transitions, 2284 flow [2022-11-21 16:42:38,756 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=1891, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=63, PETRI_FLOW=2284, PETRI_PLACES=315, PETRI_TRANSITIONS=312} [2022-11-21 16:42:38,757 INFO L288 CegarLoopForPetriNet]: 148 programPoint places, 167 predicate places. [2022-11-21 16:42:38,757 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 312 transitions, 2284 flow [2022-11-21 16:42:38,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 80.51724137931035) internal successors, (2335), 29 states have internal predecessors, (2335), 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 16:42:38,758 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:42:38,759 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:42:38,772 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32650ef8-0cc2-4c60-b5a3-e539f9234e69/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-21 16:42:38,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32650ef8-0cc2-4c60-b5a3-e539f9234e69/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:42:38,966 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:42:38,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:42:38,967 INFO L85 PathProgramCache]: Analyzing trace with hash -159129583, now seen corresponding path program 2 times [2022-11-21 16:42:38,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:42:38,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171239231] [2022-11-21 16:42:38,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:42:38,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:42:39,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:42:40,628 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-21 16:42:40,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:42:40,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171239231] [2022-11-21 16:42:40,628 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171239231] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:42:40,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [286261300] [2022-11-21 16:42:40,628 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 16:42:40,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:42:40,629 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32650ef8-0cc2-4c60-b5a3-e539f9234e69/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:42:40,631 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32650ef8-0cc2-4c60-b5a3-e539f9234e69/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:42:40,684 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32650ef8-0cc2-4c60-b5a3-e539f9234e69/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-21 16:42:40,884 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-21 16:42:40,885 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 16:42:40,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 44 conjunts are in the unsatisfiable core [2022-11-21 16:42:40,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:42:41,778 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-21 16:42:42,199 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-21 16:42:42,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 16:42:42,438 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-11-21 16:42:42,438 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 29 treesize of output 36 [2022-11-21 16:42:42,452 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2022-11-21 16:42:42,539 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-11-21 16:42:42,576 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-21 16:42:42,576 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:42:43,301 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_384 (Array Int Int)) (v_ArrVal_383 (Array Int Int)) (~f~0.offset Int) (~f~0.base Int)) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_383))) (let ((.cse2 (select (select .cse0 ~f~0.base) (+ (* c_~counter~0 4) ~f~0.offset)))) (let ((.cse1 (+ (* .cse2 4) |c_ULTIMATE.start_main_#t~ret19#1.offset|))) (or (not (= (select (select .cse0 |c_ULTIMATE.start_main_#t~ret19#1.base|) .cse1) c_~counter~0)) (not (<= 0 .cse2)) (not (< .cse2 c_~n_inv~0)) (= (select (select (store .cse0 |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_384) |c_ULTIMATE.start_main_#t~ret19#1.base|) .cse1) 0)))))) is different from false [2022-11-21 16:42:43,347 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_384 (Array Int Int)) (v_ArrVal_383 (Array Int Int)) (~f~0.offset Int) (~f~0.base Int)) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_383))) (let ((.cse2 (select (select .cse0 ~f~0.base) (+ (* c_~counter~0 4) ~f~0.offset)))) (let ((.cse1 (+ (* .cse2 4) |c_ULTIMATE.start_create_fresh_int_array_#res#1.offset|))) (or (= (select (select (store .cse0 |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_384) |c_ULTIMATE.start_create_fresh_int_array_#res#1.base|) .cse1) 0) (not (<= 0 .cse2)) (not (= c_~counter~0 (select (select .cse0 |c_ULTIMATE.start_create_fresh_int_array_#res#1.base|) .cse1))) (not (< .cse2 c_~n_inv~0))))))) is different from false [2022-11-21 16:42:44,027 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 16:42:44,027 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 157 treesize of output 97 [2022-11-21 16:42:44,067 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 16:42:44,068 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 368 treesize of output 326 [2022-11-21 16:42:44,106 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 16:42:44,107 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 302 treesize of output 276 [2022-11-21 16:42:44,139 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 16:42:44,139 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 116 treesize of output 106 [2022-11-21 16:42:47,416 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-21 16:42:47,417 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [286261300] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:42:47,417 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 16:42:47,417 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 21, 21] total 52 [2022-11-21 16:42:47,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132623118] [2022-11-21 16:42:47,418 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 16:42:47,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-11-21 16:42:47,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:42:47,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-11-21 16:42:47,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=251, Invalid=2177, Unknown=30, NotChecked=194, Total=2652 [2022-11-21 16:42:47,427 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 165 [2022-11-21 16:42:47,431 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 312 transitions, 2284 flow. Second operand has 52 states, 52 states have (on average 73.78846153846153) internal successors, (3837), 52 states have internal predecessors, (3837), 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 16:42:47,431 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:42:47,431 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 165 [2022-11-21 16:42:47,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:42:55,407 WARN L233 SmtUtils]: Spent 7.74s on a formula simplification. DAG size of input: 104 DAG size of output: 97 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-21 16:43:15,117 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-21 16:43:18,624 INFO L130 PetriNetUnfolder]: 1692/6370 cut-off events. [2022-11-21 16:43:18,624 INFO L131 PetriNetUnfolder]: For 26841/27308 co-relation queries the response was YES. [2022-11-21 16:43:18,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23465 conditions, 6370 events. 1692/6370 cut-off events. For 26841/27308 co-relation queries the response was YES. Maximal size of possible extension queue 388. Compared 67937 event pairs, 109 based on Foata normal form. 134/6404 useless extension candidates. Maximal degree in co-relation 23408. Up to 994 conditions per place. [2022-11-21 16:43:18,713 INFO L137 encePairwiseOnDemand]: 127/165 looper letters, 119 selfloop transitions, 85 changer transitions 26/418 dead transitions. [2022-11-21 16:43:18,714 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 418 transitions, 3313 flow [2022-11-21 16:43:18,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-11-21 16:43:18,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2022-11-21 16:43:18,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 3978 transitions. [2022-11-21 16:43:18,722 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44646464646464645 [2022-11-21 16:43:18,722 INFO L72 ComplementDD]: Start complementDD. Operand 54 states and 3978 transitions. [2022-11-21 16:43:18,723 INFO L73 IsDeterministic]: Start isDeterministic. Operand 54 states and 3978 transitions. [2022-11-21 16:43:18,725 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:43:18,725 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 54 states and 3978 transitions. [2022-11-21 16:43:18,733 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 55 states, 54 states have (on average 73.66666666666667) internal successors, (3978), 54 states have internal predecessors, (3978), 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 16:43:18,746 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 55 states, 55 states have (on average 165.0) internal successors, (9075), 55 states have internal predecessors, (9075), 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 16:43:18,749 INFO L81 ComplementDD]: Finished complementDD. Result has 55 states, 55 states have (on average 165.0) internal successors, (9075), 55 states have internal predecessors, (9075), 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 16:43:18,750 INFO L175 Difference]: Start difference. First operand has 315 places, 312 transitions, 2284 flow. Second operand 54 states and 3978 transitions. [2022-11-21 16:43:18,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 418 transitions, 3313 flow [2022-11-21 16:43:18,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 418 transitions, 3099 flow, removed 93 selfloop flow, removed 23 redundant places. [2022-11-21 16:43:18,903 INFO L231 Difference]: Finished difference. Result has 346 places, 342 transitions, 2637 flow [2022-11-21 16:43:18,904 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=2192, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=54, PETRI_FLOW=2637, PETRI_PLACES=346, PETRI_TRANSITIONS=342} [2022-11-21 16:43:18,906 INFO L288 CegarLoopForPetriNet]: 148 programPoint places, 198 predicate places. [2022-11-21 16:43:18,906 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 342 transitions, 2637 flow [2022-11-21 16:43:18,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 73.78846153846153) internal successors, (3837), 52 states have internal predecessors, (3837), 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 16:43:18,907 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:43:18,908 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:43:18,920 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32650ef8-0cc2-4c60-b5a3-e539f9234e69/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-21 16:43:19,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32650ef8-0cc2-4c60-b5a3-e539f9234e69/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-21 16:43:19,115 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:43:19,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:43:19,115 INFO L85 PathProgramCache]: Analyzing trace with hash 885877727, now seen corresponding path program 3 times [2022-11-21 16:43:19,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:43:19,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869296691] [2022-11-21 16:43:19,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:43:19,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:43:19,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:43:19,819 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-21 16:43:19,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:43:19,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869296691] [2022-11-21 16:43:19,819 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869296691] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:43:19,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [364938157] [2022-11-21 16:43:19,819 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-21 16:43:19,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:43:19,820 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32650ef8-0cc2-4c60-b5a3-e539f9234e69/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:43:19,821 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32650ef8-0cc2-4c60-b5a3-e539f9234e69/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:43:19,838 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32650ef8-0cc2-4c60-b5a3-e539f9234e69/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-21 16:43:19,983 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-21 16:43:19,983 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 16:43:19,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-21 16:43:19,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:43:20,327 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 10 [2022-11-21 16:43:20,439 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-21 16:43:20,439 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:43:20,611 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 12 [2022-11-21 16:43:21,181 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-21 16:43:21,181 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [364938157] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:43:21,182 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 16:43:21,182 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 19 [2022-11-21 16:43:21,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069395680] [2022-11-21 16:43:21,182 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 16:43:21,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-21 16:43:21,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:43:21,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-21 16:43:21,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2022-11-21 16:43:21,185 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 165 [2022-11-21 16:43:21,187 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 342 transitions, 2637 flow. Second operand has 19 states, 19 states have (on average 95.42105263157895) internal successors, (1813), 19 states have internal predecessors, (1813), 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 16:43:21,187 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:43:21,187 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 165 [2022-11-21 16:43:21,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:43:23,374 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([589] L61-->L66: Formula: (let ((.cse2 (not |v_thread2_#t~short11#1_66|)) (.cse1 (select (select |v_#memory_int_97| v_~f_inv~0.base_62) (+ v_~f_inv~0.offset_62 (* v_~counter~0_134 4))))) (and (or (and (let ((.cse0 (< |v_thread2_#t~mem10#1_52| v_~n~0_32))) (or (and (not .cse0) (not |v_thread2_#t~short11#1_65|)) (and .cse0 |v_thread2_#t~short11#1_65|))) (= |v_thread2_#t~mem10#1_52| .cse1) |v_thread2_#t~short11#1_66|) (and (= |v_thread2_#t~short11#1_66| |v_thread2_#t~short11#1_65|) .cse2 (= |v_thread2Thread1of1ForFork1_#t~mem10#1_1| |v_thread2_#t~mem10#1_52|))) (= (ite (= v_~counter~0_134 (select (select |v_#memory_int_97| v_~f~0.base_58) (+ v_~f~0.offset_58 (* .cse1 4)))) 1 0) |v_thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1_1|) (= v_~counter~0_133 .cse1) (not (= |v_thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1_1| 0)) (= |v_thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1_1| |v_thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1_1|) (let ((.cse3 (<= 0 .cse1))) (or (and |v_thread2_#t~short11#1_66| .cse3) (and .cse2 (not .cse3)))) (not (= (ite |v_thread2_#t~short11#1_65| 1 0) 0)) (not (= (ite (and (<= 0 v_~counter~0_134) (< v_~counter~0_134 v_~n_inv~0_22)) 1 0) 0)))) InVars {~counter~0=v_~counter~0_134, ~f_inv~0.offset=v_~f_inv~0.offset_62, ~f~0.base=v_~f~0.base_58, thread2Thread1of1ForFork1_#t~mem10#1=|v_thread2Thread1of1ForFork1_#t~mem10#1_1|, #memory_int=|v_#memory_int_97|, ~f_inv~0.base=v_~f_inv~0.base_62, ~n~0=v_~n~0_32, ~f~0.offset=v_~f~0.offset_58, ~n_inv~0=v_~n_inv~0_22} OutVars{~counter~0=v_~counter~0_133, thread2Thread1of1ForFork1_#t~mem13#1=|v_thread2Thread1of1ForFork1_#t~mem13#1_1|, ~f_inv~0.offset=v_~f_inv~0.offset_62, thread2Thread1of1ForFork1_#t~short11#1=|v_thread2Thread1of1ForFork1_#t~short11#1_1|, ~f~0.base=v_~f~0.base_58, thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1=|v_thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1_1|, ~f_inv~0.base=v_~f_inv~0.base_62, ~f~0.offset=v_~f~0.offset_58, thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1=|v_thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1_1|, thread2Thread1of1ForFork1_#t~mem9#1=|v_thread2Thread1of1ForFork1_#t~mem9#1_1|, thread2Thread1of1ForFork1_#t~mem14#1=|v_thread2Thread1of1ForFork1_#t~mem14#1_1|, thread2Thread1of1ForFork1_#t~mem12#1=|v_thread2Thread1of1ForFork1_#t~mem12#1_1|, #memory_int=|v_#memory_int_97|, ~n~0=v_~n~0_32, ~n_inv~0=v_~n_inv~0_22} AuxVars[|v_thread2_#t~short11#1_65|, |v_thread2_#t~short11#1_66|, |v_thread2_#t~mem10#1_52|] AssignedVars[thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1, ~counter~0, thread2Thread1of1ForFork1_#t~mem13#1, thread2Thread1of1ForFork1_#t~mem9#1, thread2Thread1of1ForFork1_#t~short11#1, thread2Thread1of1ForFork1_#t~mem14#1, thread2Thread1of1ForFork1_#t~mem12#1, thread2Thread1of1ForFork1_#t~mem10#1, thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1][303], [Black: 6885#(and (<= ~n~0 |ULTIMATE.start_create_fresh_int_array_#in~size#1|) (<= ~n~0 |ULTIMATE.start_create_fresh_int_array_~size#1|) (<= ~n~0 1)), Black: 6891#(and (= ~f_inv~0.offset 0) (= 0 (select (select |#memory_int| ~f_inv~0.base) (+ (* ~counter~0 4) ~f_inv~0.offset))) (= ~counter~0 0)), Black: 6857#(and (<= (+ ~n_inv~0 |ULTIMATE.start_create_fresh_int_array_~i~2#1|) (+ |ULTIMATE.start_create_fresh_int_array_~size#1| 1)) (<= ~n_inv~0 |ULTIMATE.start_create_fresh_int_array_~size#1|) (<= ~n_inv~0 |ULTIMATE.start_create_fresh_int_array_#in~size#1|) (= ~counter~0 0) (= |ULTIMATE.start_create_fresh_int_array_#t~post27#1| 0) (= |ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset| 0)), Black: 5944#(and (or (and (<= (+ (* ~counter~0 4) ~f_inv~0.offset) 0) (= 0 (select (select |#memory_int| ~f_inv~0.base) (+ (* ~counter~0 4) ~f_inv~0.offset)))) (and (or (<= ~n_inv~0 1) (<= ~counter~0 0)) (not (= ~counter~0 0)))) (= ~f_inv~0.offset 0)), Black: 6805#(and (<= ~n~0 |ULTIMATE.start_create_fresh_int_array_#in~size#1|) (<= ~n~0 |ULTIMATE.start_create_fresh_int_array_~size#1|) (= ~counter~0 0) (<= |ULTIMATE.start_create_fresh_int_array_~i~2#1| 1)), Black: 6863#(and (<= (+ ~n_inv~0 |ULTIMATE.start_create_fresh_int_array_~i~2#1|) (+ |ULTIMATE.start_create_fresh_int_array_~size#1| 1)) (<= ~n_inv~0 |ULTIMATE.start_create_fresh_int_array_~size#1|) (<= ~n_inv~0 |ULTIMATE.start_create_fresh_int_array_#in~size#1|) (= ~counter~0 0) (= |ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset| 0)), Black: 6799#(and (<= ~n~0 |ULTIMATE.start_create_fresh_int_array_#in~size#1|) (<= ~n~0 |ULTIMATE.start_create_fresh_int_array_~size#1|) (= ~counter~0 0) (<= |ULTIMATE.start_create_fresh_int_array_~i~2#1| 0)), 4752#(< |thread1Thread1of1ForFork0_~i~0#1| ~N~0), Black: 6871#(and (<= ~n_inv~0 1) (<= (+ ~n_inv~0 |ULTIMATE.start_create_fresh_int_array_~i~2#1|) (+ |ULTIMATE.start_create_fresh_int_array_~size#1| 1)) (<= ~n_inv~0 |ULTIMATE.start_create_fresh_int_array_~size#1|) (<= ~n_inv~0 |ULTIMATE.start_create_fresh_int_array_#in~size#1|) (= ~counter~0 0) (= |ULTIMATE.start_main_#t~ret19#1.offset| 0) (= |ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset| 0) (= 0 |ULTIMATE.start_create_fresh_int_array_#res#1.offset|)), Black: 6845#(and (or (< |ULTIMATE.start_create_fresh_int_array_~i~2#1| |ULTIMATE.start_create_fresh_int_array_~size#1|) (<= ~n~0 1)) (<= ~n_inv~0 |ULTIMATE.start_create_fresh_int_array_~size#1|) (<= ~n_inv~0 |ULTIMATE.start_create_fresh_int_array_#in~size#1|) (= ~counter~0 0) (= |ULTIMATE.start_create_fresh_int_array_~i~2#1| 0) (= |ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset| 0)), Black: 6873#(and (<= ~n_inv~0 1) (<= (+ ~n_inv~0 |ULTIMATE.start_create_fresh_int_array_~i~2#1|) (+ |ULTIMATE.start_create_fresh_int_array_~size#1| 1)) (<= ~n_inv~0 |ULTIMATE.start_create_fresh_int_array_~size#1|) (= ~f_inv~0.offset 0) (<= ~n_inv~0 |ULTIMATE.start_create_fresh_int_array_#in~size#1|) (= ~counter~0 0) (= |ULTIMATE.start_main_#t~ret19#1.offset| 0) (= |ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset| 0) (= 0 |ULTIMATE.start_create_fresh_int_array_#res#1.offset|)), Black: 6839#(and (<= ~n~0 |ULTIMATE.start_create_fresh_int_array_~size#1|) (<= ~n_inv~0 |ULTIMATE.start_create_fresh_int_array_~size#1|) (<= ~n_inv~0 |ULTIMATE.start_create_fresh_int_array_#in~size#1|) (= ~counter~0 0) (<= ~n~0 1) (= |ULTIMATE.start_create_fresh_int_array_#t~post27#1| 0) (<= |ULTIMATE.start_create_fresh_int_array_~i~2#1| 1) (= |ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset| 0)), Black: 6875#(and (<= ~n_inv~0 1) (<= (+ ~n_inv~0 |ULTIMATE.start_create_fresh_int_array_~i~2#1|) (+ |ULTIMATE.start_create_fresh_int_array_~size#1| 1)) (<= ~n_inv~0 |ULTIMATE.start_create_fresh_int_array_~size#1|) (= ~f_inv~0.offset 0) (<= ~n_inv~0 |ULTIMATE.start_create_fresh_int_array_#in~size#1|) (= ~counter~0 0) (= |ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset| 0) (= 0 |ULTIMATE.start_create_fresh_int_array_#res#1.offset|)), Black: 6869#(and (<= ~n_inv~0 1) (<= (+ ~n_inv~0 |ULTIMATE.start_create_fresh_int_array_~i~2#1|) (+ |ULTIMATE.start_create_fresh_int_array_~size#1| 1)) (<= ~n_inv~0 |ULTIMATE.start_create_fresh_int_array_~size#1|) (<= ~n_inv~0 |ULTIMATE.start_create_fresh_int_array_#in~size#1|) (= ~counter~0 0) (= |ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset| 0) (= 0 |ULTIMATE.start_create_fresh_int_array_#res#1.offset|)), 3075#(< |thread1Thread1of1ForFork0_~i~0#1| ~N~0), 2574#(and (<= 1 ~N~0) (< |thread1Thread1of1ForFork0_~i~0#1| ~N~0)), 90#L53true, Black: 1757#(and (<= (+ |thread2Thread1of1ForFork1_~i~1#1| 1) ~N~0) (= |thread2Thread1of1ForFork1_~i~1#1| 0)), Black: 6803#(and (<= |ULTIMATE.start_create_fresh_int_array_#t~post27#1| 0) (<= ~n~0 |ULTIMATE.start_create_fresh_int_array_#in~size#1|) (<= ~n~0 |ULTIMATE.start_create_fresh_int_array_~size#1|) (= ~counter~0 0) (<= |ULTIMATE.start_create_fresh_int_array_~i~2#1| 1)), Black: 1758#(<= 1 ~N~0), Black: 6829#(and (<= ~n~0 |ULTIMATE.start_create_fresh_int_array_~size#1|) (<= ~n_inv~0 |ULTIMATE.start_create_fresh_int_array_~size#1|) (<= ~n_inv~0 |ULTIMATE.start_create_fresh_int_array_#in~size#1|) (= ~counter~0 0) (= |ULTIMATE.start_create_fresh_int_array_~i~2#1| 0) (<= ~n~0 1) (= |ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset| 0)), Black: 6843#(and (<= ~n~0 |ULTIMATE.start_create_fresh_int_array_~size#1|) (<= ~n_inv~0 |ULTIMATE.start_create_fresh_int_array_~size#1|) (<= ~n_inv~0 |ULTIMATE.start_create_fresh_int_array_#in~size#1|) (= ~counter~0 0) (<= ~n~0 1) (<= |ULTIMATE.start_create_fresh_int_array_~i~2#1| 1) (= |ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset| 0)), Black: 6867#(and (<= ~n_inv~0 1) (<= (+ ~n_inv~0 |ULTIMATE.start_create_fresh_int_array_~i~2#1|) (+ |ULTIMATE.start_create_fresh_int_array_~size#1| 1)) (<= ~n_inv~0 |ULTIMATE.start_create_fresh_int_array_~size#1|) (<= ~n_inv~0 |ULTIMATE.start_create_fresh_int_array_#in~size#1|) (= ~counter~0 0) (= |ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset| 0)), Black: 2576#(and (<= 1 ~N~0) (<= 0 |thread2Thread1of1ForFork1_~i~1#1|)), Black: 7936#(and (or (not (< ~counter~0 ~n_inv~0)) (forall ((v_ArrVal_384 (Array Int Int))) (= 0 (select (select (store |#memory_int| |ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_384) ~f_inv~0.base) (+ (* ~counter~0 4) ~f_inv~0.offset)))) (not (<= 0 ~counter~0))) (or (< 1 |ULTIMATE.start_create_fresh_int_array_~size#1|) (< ~n_inv~0 1) (and (= ~counter~0 0) (not (< |ULTIMATE.start_main_~#t2~0#1.base| |#StackHeapBarrier|)))) (or (< 1 |ULTIMATE.start_create_fresh_int_array_~size#1|) (< ~n_inv~0 1) (not (= |ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| |ULTIMATE.start_main_~#t2~0#1.base|))) (or (< ~n_inv~0 1) (and (= ~counter~0 0) (not (< |ULTIMATE.start_main_~#t2~0#1.base| |#StackHeapBarrier|))) (< 1 |ULTIMATE.start_create_fresh_int_array_#in~size#1|))), Black: 7956#(and (or (< 1 |ULTIMATE.start_create_fresh_int_array_~size#1|) (< ~n_inv~0 1) (and (= ~counter~0 0) (not (< |ULTIMATE.start_main_~#t2~0#1.base| |#StackHeapBarrier|)))) (or (< 1 |ULTIMATE.start_create_fresh_int_array_~size#1|) (< ~n_inv~0 1) (not (= |ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| |ULTIMATE.start_main_~#t2~0#1.base|))) (= ~counter~0 0) (or (< ~n_inv~0 1) (and (= ~counter~0 0) (not (< |ULTIMATE.start_main_~#t2~0#1.base| |#StackHeapBarrier|))) (< 1 |ULTIMATE.start_create_fresh_int_array_#in~size#1|)) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), Black: 7960#(and (or (< 1 |ULTIMATE.start_create_fresh_int_array_~size#1|) (< ~n_inv~0 1) (and (= ~counter~0 0) (not (< |ULTIMATE.start_main_~#t2~0#1.base| |#StackHeapBarrier|)))) (or (< 1 |ULTIMATE.start_create_fresh_int_array_~size#1|) (< ~n_inv~0 1) (not (= |ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| |ULTIMATE.start_main_~#t2~0#1.base|))) (= ~counter~0 0) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (or (< ~n_inv~0 1) (and (= ~counter~0 0) (not (< |ULTIMATE.start_main_~#t2~0#1.base| |#StackHeapBarrier|))) (< 1 |ULTIMATE.start_create_fresh_int_array_#in~size#1|)) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), Black: 7892#(and (< |#StackHeapBarrier| |ULTIMATE.start_main_~#t2~0#1.base|) (or (< |ULTIMATE.start_create_fresh_int_array_~i~2#1| |ULTIMATE.start_create_fresh_int_array_~size#1|) (forall ((v_ArrVal_384 (Array Int Int)) (v_ArrVal_383 (Array Int Int)) (~f~0.offset Int) (~f~0.base Int)) (or (= (select (select (store (store |#memory_int| |ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_383) |ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_384) |ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ (* (select (select (store |#memory_int| |ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_383) ~f~0.base) (+ (* ~counter~0 4) ~f~0.offset)) 4) |ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 0) (not (<= 0 (select (select (store |#memory_int| |ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_383) ~f~0.base) (+ (* ~counter~0 4) ~f~0.offset)))) (not (< (select (select (store |#memory_int| |ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_383) ~f~0.base) (+ (* ~counter~0 4) ~f~0.offset)) ~n_inv~0)) (not (= ~counter~0 (select (select (store |#memory_int| |ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_383) |ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ (* (select (select (store |#memory_int| |ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_383) ~f~0.base) (+ (* ~counter~0 4) ~f~0.offset)) 4) |ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))))))) (or (< 1 |ULTIMATE.start_create_fresh_int_array_~size#1|) (< ~n_inv~0 1) (not (= |ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| |ULTIMATE.start_main_~#t2~0#1.base|))) (= ~counter~0 0) (< |#StackHeapBarrier| |ULTIMATE.start_main_~#t1~0#1.base|)), Black: 7958#(and (or (< 1 |ULTIMATE.start_create_fresh_int_array_~size#1|) (< ~n_inv~0 1) (not (= |ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| |ULTIMATE.start_main_~#t2~0#1.base|))) (= ~counter~0 0) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), Black: 7934#(and (exists ((~f~0.offset Int) (~f~0.base Int)) (and (= ~counter~0 (select (select |#memory_int| ~f~0.base) ~f~0.offset)) (= (select (select |#memory_int| ~f_inv~0.base) (+ ~f_inv~0.offset (* (select (select |#memory_int| ~f~0.base) ~f~0.offset) 4))) 0))) (< |#StackHeapBarrier| |ULTIMATE.start_main_~#t2~0#1.base|) (<= ~n_inv~0 1) (<= (+ |ULTIMATE.start_create_fresh_int_array_#res#1.base| 2) |ULTIMATE.start_main_~#t2~0#1.base|) (<= ~n_inv~0 |ULTIMATE.start_create_fresh_int_array_~size#1|) (= ~f_inv~0.offset 0) (<= ~n_inv~0 |ULTIMATE.start_create_fresh_int_array_#in~size#1|) (<= (+ |ULTIMATE.start_create_fresh_int_array_#res#1.base| 2) |ULTIMATE.start_main_~#t1~0#1.base|) (= ~counter~0 0) (<= (+ |ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| 2) |ULTIMATE.start_main_~#t1~0#1.base|) (<= (+ |ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| 2) |ULTIMATE.start_main_~#t2~0#1.base|) (<= (+ ~f_inv~0.base 2) |ULTIMATE.start_main_~#t1~0#1.base|) (< |#StackHeapBarrier| |ULTIMATE.start_main_~#t1~0#1.base|) (<= |ULTIMATE.start_create_fresh_int_array_~i~2#1| 1) (<= (+ ~f_inv~0.base 2) |ULTIMATE.start_main_~#t2~0#1.base|) (= |ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset| 0) (= 0 |ULTIMATE.start_create_fresh_int_array_#res#1.offset|)), Black: 7964#(and (= ~counter~0 0) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 6889#(and (<= ~n~0 |ULTIMATE.start_create_fresh_int_array_#in~size#1|) (<= ~n~0 |ULTIMATE.start_create_fresh_int_array_~size#1|) (= ~counter~0 0) (<= ~n~0 1)), Black: 7952#(and (exists ((~f~0.offset Int) (~f~0.base Int)) (and (= ~counter~0 (select (select |#memory_int| ~f~0.base) ~f~0.offset)) (= (select (select |#memory_int| ~f_inv~0.base) (+ ~f_inv~0.offset (* (select (select |#memory_int| ~f~0.base) ~f~0.offset) 4))) 0))) (< |#StackHeapBarrier| |ULTIMATE.start_main_~#t2~0#1.base|) (<= ~n_inv~0 1) (<= (+ |ULTIMATE.start_create_fresh_int_array_#res#1.base| 2) |ULTIMATE.start_main_~#t2~0#1.base|) (<= ~n_inv~0 |ULTIMATE.start_create_fresh_int_array_~size#1|) (= ~f_inv~0.offset 0) (<= ~n_inv~0 |ULTIMATE.start_create_fresh_int_array_#in~size#1|) (<= (+ |ULTIMATE.start_create_fresh_int_array_#res#1.base| 2) |ULTIMATE.start_main_~#t1~0#1.base|) (= ~counter~0 0) (<= (+ |ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| 2) |ULTIMATE.start_main_~#t1~0#1.base|) (<= (+ |ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| 2) |ULTIMATE.start_main_~#t2~0#1.base|) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (<= (+ ~f_inv~0.base 2) |ULTIMATE.start_main_~#t1~0#1.base|) (< |#StackHeapBarrier| |ULTIMATE.start_main_~#t1~0#1.base|) (<= |ULTIMATE.start_create_fresh_int_array_~i~2#1| 1) (<= (+ ~f_inv~0.base 2) |ULTIMATE.start_main_~#t2~0#1.base|) (= |ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset| 0) (= 0 |ULTIMATE.start_create_fresh_int_array_#res#1.offset|) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), Black: 7950#(and (exists ((~f~0.offset Int) (~f~0.base Int)) (and (= ~counter~0 (select (select |#memory_int| ~f~0.base) ~f~0.offset)) (= (select (select |#memory_int| ~f_inv~0.base) (+ ~f_inv~0.offset (* (select (select |#memory_int| ~f~0.base) ~f~0.offset) 4))) 0))) (< |#StackHeapBarrier| |ULTIMATE.start_main_~#t2~0#1.base|) (<= ~n_inv~0 1) (<= (+ |ULTIMATE.start_create_fresh_int_array_#res#1.base| 2) |ULTIMATE.start_main_~#t2~0#1.base|) (<= ~n_inv~0 |ULTIMATE.start_create_fresh_int_array_~size#1|) (= ~f_inv~0.offset 0) (<= ~n_inv~0 |ULTIMATE.start_create_fresh_int_array_#in~size#1|) (<= (+ |ULTIMATE.start_create_fresh_int_array_#res#1.base| 2) |ULTIMATE.start_main_~#t1~0#1.base|) (= ~counter~0 0) (<= (+ |ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| 2) |ULTIMATE.start_main_~#t1~0#1.base|) (<= (+ |ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| 2) |ULTIMATE.start_main_~#t2~0#1.base|) (<= (+ ~f_inv~0.base 2) |ULTIMATE.start_main_~#t1~0#1.base|) (< |#StackHeapBarrier| |ULTIMATE.start_main_~#t1~0#1.base|) (<= |ULTIMATE.start_create_fresh_int_array_~i~2#1| 1) (<= (+ ~f_inv~0.base 2) |ULTIMATE.start_main_~#t2~0#1.base|) (= |ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset| 0) (= 0 |ULTIMATE.start_create_fresh_int_array_#res#1.offset|) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), Black: 7954#(and (or (< 1 |ULTIMATE.start_create_fresh_int_array_~size#1|) (< ~n_inv~0 1) (not (= |ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| |ULTIMATE.start_main_~#t2~0#1.base|))) (= ~counter~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), Black: 5113#(and (<= 1 ~N~0) (= |thread2Thread1of1ForFork1_~i~1#1| 0)), Black: 7942#(and (or (< 1 |ULTIMATE.start_create_fresh_int_array_~size#1|) (< ~n_inv~0 1) (and (= ~counter~0 0) (not (< |ULTIMATE.start_main_~#t2~0#1.base| |#StackHeapBarrier|)))) (or (< 1 |ULTIMATE.start_create_fresh_int_array_~size#1|) (< ~n_inv~0 1) (not (= |ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| |ULTIMATE.start_main_~#t2~0#1.base|))) (= ~counter~0 0) (or (< ~n_inv~0 1) (and (= ~counter~0 0) (not (< |ULTIMATE.start_main_~#t2~0#1.base| |#StackHeapBarrier|))) (< 1 |ULTIMATE.start_create_fresh_int_array_#in~size#1|))), Black: 7928#(and (< |#StackHeapBarrier| |ULTIMATE.start_main_~#t2~0#1.base|) (<= ~n_inv~0 |ULTIMATE.start_create_fresh_int_array_~size#1|) (<= ~n_inv~0 |ULTIMATE.start_create_fresh_int_array_#in~size#1|) (forall ((v_ArrVal_384 (Array Int Int)) (v_ArrVal_383 (Array Int Int)) (~f~0.offset Int) (~f~0.base Int)) (or (= (select (select (store (store |#memory_int| |ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_383) |ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_384) ~f_inv~0.base) (+ ~f_inv~0.offset (* (select (select (store |#memory_int| |ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_383) ~f~0.base) (+ (* ~counter~0 4) ~f~0.offset)) 4))) 0) (not (<= 0 (select (select (store |#memory_int| |ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_383) ~f~0.base) (+ (* ~counter~0 4) ~f~0.offset)))) (not (< (select (select (store |#memory_int| |ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_383) ~f~0.base) (+ (* ~counter~0 4) ~f~0.offset)) ~n_inv~0)) (not (= ~counter~0 (select (select (store |#memory_int| |ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_383) ~f_inv~0.base) (+ ~f_inv~0.offset (* (select (select (store |#memory_int| |ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_383) ~f~0.base) (+ (* ~counter~0 4) ~f~0.offset)) 4))))))) (= ~counter~0 0) (<= (+ |ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| 2) |ULTIMATE.start_main_~#t1~0#1.base|) (<= (+ |ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| 2) |ULTIMATE.start_main_~#t2~0#1.base|) (< |#StackHeapBarrier| |ULTIMATE.start_main_~#t1~0#1.base|) (= |ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset| 0)), 148#L84-1true, Black: 7962#(and (= ~counter~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), Black: 7932#(and (forall ((~f~0.offset Int) (~f~0.base Int)) (or (not (= ~counter~0 (select (select |#memory_int| ~f_inv~0.base) (+ ~f_inv~0.offset (* (select (select |#memory_int| ~f~0.base) (+ (* ~counter~0 4) ~f~0.offset)) 4))))) (not (<= 0 (select (select |#memory_int| ~f~0.base) (+ (* ~counter~0 4) ~f~0.offset)))) (forall ((v_ArrVal_384 (Array Int Int))) (= (select (select (store |#memory_int| |ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_384) ~f_inv~0.base) (+ ~f_inv~0.offset (* (select (select |#memory_int| ~f~0.base) (+ (* ~counter~0 4) ~f~0.offset)) 4))) 0)) (not (< (select (select |#memory_int| ~f~0.base) (+ (* ~counter~0 4) ~f~0.offset)) ~n_inv~0)))) (< |#StackHeapBarrier| |ULTIMATE.start_main_~#t2~0#1.base|) (<= ~n_inv~0 |ULTIMATE.start_create_fresh_int_array_~size#1|) (<= ~n_inv~0 |ULTIMATE.start_create_fresh_int_array_#in~size#1|) (= ~counter~0 0) (<= (+ |ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| 2) |ULTIMATE.start_main_~#t1~0#1.base|) (<= (+ |ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| 2) |ULTIMATE.start_main_~#t2~0#1.base|) (< |#StackHeapBarrier| |ULTIMATE.start_main_~#t1~0#1.base|) (= |ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset| 0)), Black: 3446#(and (<= 1 ~N~0) (= |thread2Thread1of1ForFork1_~i~1#1| 0)), Black: 7944#(and (or (< 1 |ULTIMATE.start_create_fresh_int_array_~size#1|) (< ~n_inv~0 1) (not (= |ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| |ULTIMATE.start_main_~#t2~0#1.base|))) (= ~counter~0 0)), Black: 6945#(= ~counter~0 0), Black: 552#(and (<= ~n~0 |ULTIMATE.start_create_fresh_int_array_#in~size#1|) (<= ~n~0 |ULTIMATE.start_create_fresh_int_array_~size#1|) (<= 0 ~counter~0) (<= |ULTIMATE.start_create_fresh_int_array_~i~2#1| 0)), Black: 3441#true, Black: 167#(= ~counter~0 0), 3894#(< |thread2Thread1of1ForFork1_~i~1#1| ~N~0), 1340#(and (< |thread2Thread1of1ForFork1_~i~1#1| ~N~0) (<= 1 ~N~0)), 6943#true, 8898#(and (<= ~n_inv~0 |ULTIMATE.start_create_fresh_int_array_~size#1|) (<= ~n_inv~0 |ULTIMATE.start_create_fresh_int_array_#in~size#1|)), 51#L66true, Black: 1748#(and (<= ~n_inv~0 |ULTIMATE.start_create_fresh_int_array_~size#1|) (<= 0 ~counter~0) (<= ~n_inv~0 |ULTIMATE.start_create_fresh_int_array_#in~size#1|) (<= |ULTIMATE.start_create_fresh_int_array_~i~2#1| 0)), Black: 2609#(and (= |thread1Thread1of1ForFork0_~i~0#1| 0) (<= 1 ~N~0)), Black: 2606#(= |thread1Thread1of1ForFork0_~i~0#1| 0), 162#true, 5561#(< |thread2Thread1of1ForFork1_~i~1#1| ~N~0), Black: 3431#(= |thread2Thread1of1ForFork1_~i~1#1| 0), Black: 4286#(and (= |thread1Thread1of1ForFork0_~i~0#1| 0) (<= 1 ~N~0)), Black: 6883#(and (<= ~n_inv~0 1) (<= (+ ~n_inv~0 |ULTIMATE.start_create_fresh_int_array_~i~2#1|) (+ |ULTIMATE.start_create_fresh_int_array_~size#1| 1)) (<= ~n_inv~0 |ULTIMATE.start_create_fresh_int_array_~size#1|) (= ~f_inv~0.offset 0) (= 0 (select (select |#memory_int| ~f_inv~0.base) (+ (* ~counter~0 4) ~f_inv~0.offset))) (<= ~n_inv~0 |ULTIMATE.start_create_fresh_int_array_#in~size#1|) (= ~counter~0 0) (= |ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset| 0) (= 0 |ULTIMATE.start_create_fresh_int_array_#res#1.offset|)), Black: 6797#(and (<= ~n~0 |ULTIMATE.start_create_fresh_int_array_#in~size#1|) (<= ~n~0 |ULTIMATE.start_create_fresh_int_array_~size#1|) (= ~counter~0 0))]) [2022-11-21 16:43:23,375 INFO L383 tUnfolder$Statistics]: this new event has 138 ancestors and is cut-off event [2022-11-21 16:43:23,375 INFO L386 tUnfolder$Statistics]: existing Event has 138 ancestors and is cut-off event [2022-11-21 16:43:23,375 INFO L386 tUnfolder$Statistics]: existing Event has 133 ancestors and is cut-off event [2022-11-21 16:43:23,375 INFO L386 tUnfolder$Statistics]: existing Event has 138 ancestors and is cut-off event [2022-11-21 16:43:24,104 INFO L130 PetriNetUnfolder]: 1904/7286 cut-off events. [2022-11-21 16:43:24,104 INFO L131 PetriNetUnfolder]: For 32049/32663 co-relation queries the response was YES. [2022-11-21 16:43:24,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27100 conditions, 7286 events. 1904/7286 cut-off events. For 32049/32663 co-relation queries the response was YES. Maximal size of possible extension queue 407. Compared 79278 event pairs, 210 based on Foata normal form. 140/7289 useless extension candidates. Maximal degree in co-relation 27041. Up to 1248 conditions per place. [2022-11-21 16:43:24,205 INFO L137 encePairwiseOnDemand]: 147/165 looper letters, 126 selfloop transitions, 49 changer transitions 9/395 dead transitions. [2022-11-21 16:43:24,205 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 395 transitions, 3358 flow [2022-11-21 16:43:24,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-21 16:43:24,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-11-21 16:43:24,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1935 transitions. [2022-11-21 16:43:24,212 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5863636363636363 [2022-11-21 16:43:24,212 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1935 transitions. [2022-11-21 16:43:24,212 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1935 transitions. [2022-11-21 16:43:24,213 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:43:24,214 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1935 transitions. [2022-11-21 16:43:24,217 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 96.75) internal successors, (1935), 20 states have internal predecessors, (1935), 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 16:43:24,224 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 165.0) internal successors, (3465), 21 states have internal predecessors, (3465), 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 16:43:24,225 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 165.0) internal successors, (3465), 21 states have internal predecessors, (3465), 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 16:43:24,227 INFO L175 Difference]: Start difference. First operand has 346 places, 342 transitions, 2637 flow. Second operand 20 states and 1935 transitions. [2022-11-21 16:43:24,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 395 transitions, 3358 flow [2022-11-21 16:43:24,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 395 transitions, 3037 flow, removed 109 selfloop flow, removed 45 redundant places. [2022-11-21 16:43:24,441 INFO L231 Difference]: Finished difference. Result has 320 places, 355 transitions, 2703 flow [2022-11-21 16:43:24,442 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=2418, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2703, PETRI_PLACES=320, PETRI_TRANSITIONS=355} [2022-11-21 16:43:24,442 INFO L288 CegarLoopForPetriNet]: 148 programPoint places, 172 predicate places. [2022-11-21 16:43:24,443 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 355 transitions, 2703 flow [2022-11-21 16:43:24,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 95.42105263157895) internal successors, (1813), 19 states have internal predecessors, (1813), 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 16:43:24,444 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:43:24,444 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:43:24,459 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32650ef8-0cc2-4c60-b5a3-e539f9234e69/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-21 16:43:24,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32650ef8-0cc2-4c60-b5a3-e539f9234e69/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-21 16:43:24,651 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:43:24,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:43:24,652 INFO L85 PathProgramCache]: Analyzing trace with hash -1098675889, now seen corresponding path program 4 times [2022-11-21 16:43:24,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:43:24,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367598] [2022-11-21 16:43:24,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:43:24,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:43:24,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:43:25,018 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-21 16:43:25,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:43:25,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367598] [2022-11-21 16:43:25,018 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367598] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:43:25,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1661179421] [2022-11-21 16:43:25,019 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-21 16:43:25,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:43:25,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32650ef8-0cc2-4c60-b5a3-e539f9234e69/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:43:25,023 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32650ef8-0cc2-4c60-b5a3-e539f9234e69/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:43:25,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32650ef8-0cc2-4c60-b5a3-e539f9234e69/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-21 16:43:25,190 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-21 16:43:25,190 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 16:43:25,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-21 16:43:25,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:43:25,542 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-21 16:43:25,542 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:43:25,830 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-21 16:43:25,830 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1661179421] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:43:25,830 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 16:43:25,830 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 19 [2022-11-21 16:43:25,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10044035] [2022-11-21 16:43:25,831 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 16:43:25,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-21 16:43:25,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:43:25,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-21 16:43:25,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2022-11-21 16:43:25,834 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 165 [2022-11-21 16:43:25,837 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 355 transitions, 2703 flow. Second operand has 19 states, 19 states have (on average 137.52631578947367) internal successors, (2613), 19 states have internal predecessors, (2613), 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 16:43:25,837 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:43:25,837 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 165 [2022-11-21 16:43:25,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:43:32,307 INFO L130 PetriNetUnfolder]: 4981/14216 cut-off events. [2022-11-21 16:43:32,307 INFO L131 PetriNetUnfolder]: For 52134/52152 co-relation queries the response was YES. [2022-11-21 16:43:32,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53120 conditions, 14216 events. 4981/14216 cut-off events. For 52134/52152 co-relation queries the response was YES. Maximal size of possible extension queue 656. Compared 152643 event pairs, 996 based on Foata normal form. 63/14177 useless extension candidates. Maximal degree in co-relation 53067. Up to 3582 conditions per place. [2022-11-21 16:43:32,526 INFO L137 encePairwiseOnDemand]: 153/165 looper letters, 593 selfloop transitions, 184 changer transitions 29/962 dead transitions. [2022-11-21 16:43:32,527 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 962 transitions, 9665 flow [2022-11-21 16:43:32,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-11-21 16:43:32,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2022-11-21 16:43:32,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 6878 transitions. [2022-11-21 16:43:32,556 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8507111935683365 [2022-11-21 16:43:32,556 INFO L72 ComplementDD]: Start complementDD. Operand 49 states and 6878 transitions. [2022-11-21 16:43:32,556 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 6878 transitions. [2022-11-21 16:43:32,563 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:43:32,563 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 49 states and 6878 transitions. [2022-11-21 16:43:32,585 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 50 states, 49 states have (on average 140.3673469387755) internal successors, (6878), 49 states have internal predecessors, (6878), 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 16:43:32,603 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 50 states, 50 states have (on average 165.0) internal successors, (8250), 50 states have internal predecessors, (8250), 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 16:43:32,606 INFO L81 ComplementDD]: Finished complementDD. Result has 50 states, 50 states have (on average 165.0) internal successors, (8250), 50 states have internal predecessors, (8250), 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 16:43:32,606 INFO L175 Difference]: Start difference. First operand has 320 places, 355 transitions, 2703 flow. Second operand 49 states and 6878 transitions. [2022-11-21 16:43:32,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 962 transitions, 9665 flow [2022-11-21 16:43:33,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 962 transitions, 9340 flow, removed 143 selfloop flow, removed 13 redundant places. [2022-11-21 16:43:33,017 INFO L231 Difference]: Finished difference. Result has 364 places, 515 transitions, 4406 flow [2022-11-21 16:43:33,020 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=2632, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=355, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=49, PETRI_FLOW=4406, PETRI_PLACES=364, PETRI_TRANSITIONS=515} [2022-11-21 16:43:33,020 INFO L288 CegarLoopForPetriNet]: 148 programPoint places, 216 predicate places. [2022-11-21 16:43:33,020 INFO L495 AbstractCegarLoop]: Abstraction has has 364 places, 515 transitions, 4406 flow [2022-11-21 16:43:33,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 137.52631578947367) internal successors, (2613), 19 states have internal predecessors, (2613), 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 16:43:33,021 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:43:33,022 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:43:33,034 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32650ef8-0cc2-4c60-b5a3-e539f9234e69/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-21 16:43:33,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32650ef8-0cc2-4c60-b5a3-e539f9234e69/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-21 16:43:33,228 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:43:33,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:43:33,229 INFO L85 PathProgramCache]: Analyzing trace with hash -988244001, now seen corresponding path program 5 times [2022-11-21 16:43:33,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:43:33,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649873381] [2022-11-21 16:43:33,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:43:33,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:43:33,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:43:33,658 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-21 16:43:33,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:43:33,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649873381] [2022-11-21 16:43:33,659 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649873381] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:43:33,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1560054028] [2022-11-21 16:43:33,659 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-21 16:43:33,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:43:33,659 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32650ef8-0cc2-4c60-b5a3-e539f9234e69/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:43:33,663 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32650ef8-0cc2-4c60-b5a3-e539f9234e69/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:43:33,690 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32650ef8-0cc2-4c60-b5a3-e539f9234e69/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-21 16:43:34,005 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-11-21 16:43:34,005 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 16:43:34,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-21 16:43:34,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:43:34,437 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-21 16:43:34,437 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:43:34,751 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-21 16:43:34,751 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1560054028] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:43:34,751 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 16:43:34,752 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 21 [2022-11-21 16:43:34,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537335241] [2022-11-21 16:43:34,752 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 16:43:34,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-21 16:43:34,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:43:34,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-21 16:43:34,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=352, Unknown=0, NotChecked=0, Total=420 [2022-11-21 16:43:34,757 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 165 [2022-11-21 16:43:34,759 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 515 transitions, 4406 flow. Second operand has 21 states, 21 states have (on average 137.47619047619048) internal successors, (2887), 21 states have internal predecessors, (2887), 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 16:43:34,760 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:43:34,760 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 165 [2022-11-21 16:43:34,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:43:40,389 INFO L130 PetriNetUnfolder]: 4961/14423 cut-off events. [2022-11-21 16:43:40,389 INFO L131 PetriNetUnfolder]: For 65727/65743 co-relation queries the response was YES. [2022-11-21 16:43:40,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61479 conditions, 14423 events. 4961/14423 cut-off events. For 65727/65743 co-relation queries the response was YES. Maximal size of possible extension queue 690. Compared 157639 event pairs, 1417 based on Foata normal form. 28/14336 useless extension candidates. Maximal degree in co-relation 61417. Up to 6837 conditions per place. [2022-11-21 16:43:40,604 INFO L137 encePairwiseOnDemand]: 153/165 looper letters, 371 selfloop transitions, 117 changer transitions 34/678 dead transitions. [2022-11-21 16:43:40,604 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 384 places, 678 transitions, 6878 flow [2022-11-21 16:43:40,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-21 16:43:40,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-11-21 16:43:40,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3343 transitions. [2022-11-21 16:43:40,611 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8441919191919192 [2022-11-21 16:43:40,611 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3343 transitions. [2022-11-21 16:43:40,612 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3343 transitions. [2022-11-21 16:43:40,613 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:43:40,613 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3343 transitions. [2022-11-21 16:43:40,618 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 139.29166666666666) internal successors, (3343), 24 states have internal predecessors, (3343), 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 16:43:40,624 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 165.0) internal successors, (4125), 25 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 16:43:40,625 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 165.0) internal successors, (4125), 25 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 16:43:40,626 INFO L175 Difference]: Start difference. First operand has 364 places, 515 transitions, 4406 flow. Second operand 24 states and 3343 transitions. [2022-11-21 16:43:40,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 384 places, 678 transitions, 6878 flow [2022-11-21 16:43:41,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 381 places, 678 transitions, 6747 flow, removed 40 selfloop flow, removed 3 redundant places. [2022-11-21 16:43:41,580 INFO L231 Difference]: Finished difference. Result has 390 places, 526 transitions, 4656 flow [2022-11-21 16:43:41,581 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=4287, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=515, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=402, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=4656, PETRI_PLACES=390, PETRI_TRANSITIONS=526} [2022-11-21 16:43:41,581 INFO L288 CegarLoopForPetriNet]: 148 programPoint places, 242 predicate places. [2022-11-21 16:43:41,582 INFO L495 AbstractCegarLoop]: Abstraction has has 390 places, 526 transitions, 4656 flow [2022-11-21 16:43:41,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 137.47619047619048) internal successors, (2887), 21 states have internal predecessors, (2887), 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 16:43:41,582 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:43:41,583 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:43:41,594 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32650ef8-0cc2-4c60-b5a3-e539f9234e69/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-21 16:43:41,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32650ef8-0cc2-4c60-b5a3-e539f9234e69/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-21 16:43:41,789 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:43:41,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:43:41,789 INFO L85 PathProgramCache]: Analyzing trace with hash 609799439, now seen corresponding path program 6 times [2022-11-21 16:43:41,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:43:41,789 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728572664] [2022-11-21 16:43:41,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:43:41,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:43:41,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:43:42,109 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-21 16:43:42,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:43:42,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728572664] [2022-11-21 16:43:42,109 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728572664] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:43:42,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2034942549] [2022-11-21 16:43:42,109 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-21 16:43:42,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:43:42,110 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32650ef8-0cc2-4c60-b5a3-e539f9234e69/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:43:42,112 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32650ef8-0cc2-4c60-b5a3-e539f9234e69/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:43:42,113 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32650ef8-0cc2-4c60-b5a3-e539f9234e69/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-21 16:43:42,278 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-11-21 16:43:42,278 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 16:43:42,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-21 16:43:42,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:43:42,633 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-21 16:43:42,634 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:43:42,837 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-21 16:43:42,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2034942549] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:43:42,837 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 16:43:42,838 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 21 [2022-11-21 16:43:42,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659234699] [2022-11-21 16:43:42,838 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 16:43:42,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-21 16:43:42,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:43:42,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-21 16:43:42,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2022-11-21 16:43:42,842 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 165 [2022-11-21 16:43:42,845 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 390 places, 526 transitions, 4656 flow. Second operand has 21 states, 21 states have (on average 137.8095238095238) internal successors, (2894), 21 states have internal predecessors, (2894), 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 16:43:42,845 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:43:42,845 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 165 [2022-11-21 16:43:42,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:43:50,259 INFO L130 PetriNetUnfolder]: 6207/17065 cut-off events. [2022-11-21 16:43:50,259 INFO L131 PetriNetUnfolder]: For 84849/84865 co-relation queries the response was YES. [2022-11-21 16:43:50,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76364 conditions, 17065 events. 6207/17065 cut-off events. For 84849/84865 co-relation queries the response was YES. Maximal size of possible extension queue 727. Compared 184916 event pairs, 1128 based on Foata normal form. 337/17288 useless extension candidates. Maximal degree in co-relation 76295. Up to 5845 conditions per place. [2022-11-21 16:43:50,709 INFO L137 encePairwiseOnDemand]: 153/165 looper letters, 609 selfloop transitions, 233 changer transitions 5/1003 dead transitions. [2022-11-21 16:43:50,709 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 1003 transitions, 10654 flow [2022-11-21 16:43:50,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-21 16:43:50,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-11-21 16:43:50,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 4659 transitions. [2022-11-21 16:43:50,715 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8556473829201102 [2022-11-21 16:43:50,716 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 4659 transitions. [2022-11-21 16:43:50,716 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 4659 transitions. [2022-11-21 16:43:50,717 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:43:50,718 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 4659 transitions. [2022-11-21 16:43:50,725 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 141.1818181818182) internal successors, (4659), 33 states have internal predecessors, (4659), 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 16:43:50,731 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 165.0) internal successors, (5610), 34 states have internal predecessors, (5610), 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 16:43:50,733 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 165.0) internal successors, (5610), 34 states have internal predecessors, (5610), 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 16:43:50,733 INFO L175 Difference]: Start difference. First operand has 390 places, 526 transitions, 4656 flow. Second operand 33 states and 4659 transitions. [2022-11-21 16:43:50,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 1003 transitions, 10654 flow [2022-11-21 16:43:51,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 413 places, 1003 transitions, 10555 flow, removed 9 selfloop flow, removed 6 redundant places. [2022-11-21 16:43:51,828 INFO L231 Difference]: Finished difference. Result has 436 places, 647 transitions, 6735 flow [2022-11-21 16:43:51,828 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=4573, PETRI_DIFFERENCE_MINUEND_PLACES=381, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=526, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=366, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=6735, PETRI_PLACES=436, PETRI_TRANSITIONS=647} [2022-11-21 16:43:51,829 INFO L288 CegarLoopForPetriNet]: 148 programPoint places, 288 predicate places. [2022-11-21 16:43:51,829 INFO L495 AbstractCegarLoop]: Abstraction has has 436 places, 647 transitions, 6735 flow [2022-11-21 16:43:51,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 137.8095238095238) internal successors, (2894), 21 states have internal predecessors, (2894), 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 16:43:51,830 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:43:51,830 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:43:51,836 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32650ef8-0cc2-4c60-b5a3-e539f9234e69/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-21 16:43:52,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32650ef8-0cc2-4c60-b5a3-e539f9234e69/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:43:52,032 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:43:52,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:43:52,032 INFO L85 PathProgramCache]: Analyzing trace with hash 1800751641, now seen corresponding path program 7 times [2022-11-21 16:43:52,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:43:52,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203900050] [2022-11-21 16:43:52,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:43:52,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:43:52,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:43:52,365 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-21 16:43:52,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:43:52,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203900050] [2022-11-21 16:43:52,366 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203900050] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:43:52,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [428452377] [2022-11-21 16:43:52,366 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-21 16:43:52,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:43:52,366 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32650ef8-0cc2-4c60-b5a3-e539f9234e69/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:43:52,371 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32650ef8-0cc2-4c60-b5a3-e539f9234e69/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:43:52,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32650ef8-0cc2-4c60-b5a3-e539f9234e69/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-21 16:43:52,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:43:52,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-21 16:43:52,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:43:52,972 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-21 16:43:52,973 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:43:53,282 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-21 16:43:53,282 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [428452377] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:43:53,282 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 16:43:53,283 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 21 [2022-11-21 16:43:53,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110959639] [2022-11-21 16:43:53,283 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 16:43:53,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-21 16:43:53,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:43:53,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-21 16:43:53,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2022-11-21 16:43:53,287 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 165 [2022-11-21 16:43:53,290 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 436 places, 647 transitions, 6735 flow. Second operand has 21 states, 21 states have (on average 137.66666666666666) internal successors, (2891), 21 states have internal predecessors, (2891), 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 16:43:53,290 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:43:53,291 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 165 [2022-11-21 16:43:53,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:44:05,634 INFO L130 PetriNetUnfolder]: 8936/24369 cut-off events. [2022-11-21 16:44:05,634 INFO L131 PetriNetUnfolder]: For 181013/181029 co-relation queries the response was YES. [2022-11-21 16:44:06,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127030 conditions, 24369 events. 8936/24369 cut-off events. For 181013/181029 co-relation queries the response was YES. Maximal size of possible extension queue 947. Compared 276945 event pairs, 1266 based on Foata normal form. 244/24474 useless extension candidates. Maximal degree in co-relation 126940. Up to 6425 conditions per place. [2022-11-21 16:44:06,250 INFO L137 encePairwiseOnDemand]: 153/165 looper letters, 792 selfloop transitions, 478 changer transitions 7/1433 dead transitions. [2022-11-21 16:44:06,250 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 493 places, 1433 transitions, 17444 flow [2022-11-21 16:44:06,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-11-21 16:44:06,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2022-11-21 16:44:06,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 8152 transitions. [2022-11-21 16:44:06,264 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.851828631138976 [2022-11-21 16:44:06,265 INFO L72 ComplementDD]: Start complementDD. Operand 58 states and 8152 transitions. [2022-11-21 16:44:06,265 INFO L73 IsDeterministic]: Start isDeterministic. Operand 58 states and 8152 transitions. [2022-11-21 16:44:06,269 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:44:06,269 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 58 states and 8152 transitions. [2022-11-21 16:44:06,285 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 59 states, 58 states have (on average 140.55172413793105) internal successors, (8152), 58 states have internal predecessors, (8152), 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 16:44:06,297 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 59 states, 59 states have (on average 165.0) internal successors, (9735), 59 states have internal predecessors, (9735), 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 16:44:06,299 INFO L81 ComplementDD]: Finished complementDD. Result has 59 states, 59 states have (on average 165.0) internal successors, (9735), 59 states have internal predecessors, (9735), 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 16:44:06,300 INFO L175 Difference]: Start difference. First operand has 436 places, 647 transitions, 6735 flow. Second operand 58 states and 8152 transitions. [2022-11-21 16:44:06,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 493 places, 1433 transitions, 17444 flow [2022-11-21 16:44:11,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 488 places, 1433 transitions, 17330 flow, removed 6 selfloop flow, removed 5 redundant places. [2022-11-21 16:44:11,670 INFO L231 Difference]: Finished difference. Result has 522 places, 912 transitions, 11949 flow [2022-11-21 16:44:11,671 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=6634, PETRI_DIFFERENCE_MINUEND_PLACES=431, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=647, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=243, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=353, PETRI_DIFFERENCE_SUBTRAHEND_STATES=58, PETRI_FLOW=11949, PETRI_PLACES=522, PETRI_TRANSITIONS=912} [2022-11-21 16:44:11,672 INFO L288 CegarLoopForPetriNet]: 148 programPoint places, 374 predicate places. [2022-11-21 16:44:11,672 INFO L495 AbstractCegarLoop]: Abstraction has has 522 places, 912 transitions, 11949 flow [2022-11-21 16:44:11,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 137.66666666666666) internal successors, (2891), 21 states have internal predecessors, (2891), 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 16:44:11,673 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:44:11,673 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:44:11,680 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32650ef8-0cc2-4c60-b5a3-e539f9234e69/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-21 16:44:11,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32650ef8-0cc2-4c60-b5a3-e539f9234e69/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:44:11,880 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-21 16:44:11,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:44:11,880 INFO L85 PathProgramCache]: Analyzing trace with hash 1142180919, now seen corresponding path program 8 times [2022-11-21 16:44:11,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:44:11,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091356080] [2022-11-21 16:44:11,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:44:11,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:44:11,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:44:12,270 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-21 16:44:12,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:44:12,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091356080] [2022-11-21 16:44:12,271 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091356080] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:44:12,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [713758137] [2022-11-21 16:44:12,271 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 16:44:12,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:44:12,271 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32650ef8-0cc2-4c60-b5a3-e539f9234e69/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:44:12,275 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32650ef8-0cc2-4c60-b5a3-e539f9234e69/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:44:12,288 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32650ef8-0cc2-4c60-b5a3-e539f9234e69/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-21 16:44:12,486 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-21 16:44:12,486 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 16:44:12,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-21 16:44:12,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:44:12,911 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-21 16:44:12,911 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:44:13,257 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-21 16:44:13,257 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [713758137] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:44:13,258 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 16:44:13,258 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 21 [2022-11-21 16:44:13,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693276041] [2022-11-21 16:44:13,259 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 16:44:13,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-21 16:44:13,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:44:13,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-21 16:44:13,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=352, Unknown=0, NotChecked=0, Total=420 [2022-11-21 16:44:13,264 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 165 [2022-11-21 16:44:13,268 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 522 places, 912 transitions, 11949 flow. Second operand has 21 states, 21 states have (on average 137.42857142857142) internal successors, (2886), 21 states have internal predecessors, (2886), 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 16:44:13,268 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:44:13,268 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 165 [2022-11-21 16:44:13,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand