./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/chl-poker-hand-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 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_ba4ed857-276c-40cb-ab3d-b674c9fc632b/bin/uautomizer-QkZJyEgLgS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4ed857-276c-40cb-ab3d-b674c9fc632b/bin/uautomizer-QkZJyEgLgS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4ed857-276c-40cb-ab3d-b674c9fc632b/bin/uautomizer-QkZJyEgLgS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4ed857-276c-40cb-ab3d-b674c9fc632b/bin/uautomizer-QkZJyEgLgS/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-poker-hand-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4ed857-276c-40cb-ab3d-b674c9fc632b/bin/uautomizer-QkZJyEgLgS/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4ed857-276c-40cb-ab3d-b674c9fc632b/bin/uautomizer-QkZJyEgLgS --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 83dad307cba3d7607e136206fd160e874fd8a32bc88cbef3e5973f117a7651cc --- 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-4e7fbc6 [2022-11-23 03:29:46,689 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 03:29:46,691 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 03:29:46,711 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 03:29:46,711 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 03:29:46,712 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 03:29:46,714 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 03:29:46,715 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 03:29:46,717 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 03:29:46,718 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 03:29:46,719 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 03:29:46,720 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 03:29:46,720 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 03:29:46,721 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 03:29:46,722 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 03:29:46,724 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 03:29:46,724 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 03:29:46,725 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 03:29:46,727 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 03:29:46,729 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 03:29:46,730 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 03:29:46,731 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 03:29:46,732 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 03:29:46,733 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 03:29:46,737 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 03:29:46,737 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 03:29:46,737 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 03:29:46,738 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 03:29:46,739 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 03:29:46,740 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 03:29:46,740 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 03:29:46,741 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 03:29:46,741 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 03:29:46,742 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 03:29:46,743 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 03:29:46,743 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 03:29:46,744 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 03:29:46,744 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 03:29:46,744 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 03:29:46,745 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 03:29:46,746 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 03:29:46,747 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4ed857-276c-40cb-ab3d-b674c9fc632b/bin/uautomizer-QkZJyEgLgS/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-23 03:29:46,768 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 03:29:46,769 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 03:29:46,769 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 03:29:46,769 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 03:29:46,770 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 03:29:46,770 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 03:29:46,771 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-23 03:29:46,771 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-23 03:29:46,771 INFO L138 SettingsManager]: * Use SBE=true [2022-11-23 03:29:46,772 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 03:29:46,772 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 03:29:46,772 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 03:29:46,772 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 03:29:46,772 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 03:29:46,772 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 03:29:46,773 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 03:29:46,773 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 03:29:46,773 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 03:29:46,773 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 03:29:46,773 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 03:29:46,773 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 03:29:46,774 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 03:29:46,774 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 03:29:46,774 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 03:29:46,774 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 03:29:46,774 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 03:29:46,775 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 03:29:46,775 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 03:29:46,775 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-23 03:29:46,775 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 03:29:46,775 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-23 03:29:46,775 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 03:29:46,776 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-23 03:29:46,776 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 03:29:46,776 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_ba4ed857-276c-40cb-ab3d-b674c9fc632b/bin/uautomizer-QkZJyEgLgS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4ed857-276c-40cb-ab3d-b674c9fc632b/bin/uautomizer-QkZJyEgLgS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 83dad307cba3d7607e136206fd160e874fd8a32bc88cbef3e5973f117a7651cc [2022-11-23 03:29:47,055 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 03:29:47,080 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 03:29:47,083 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 03:29:47,085 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 03:29:47,086 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 03:29:47,087 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4ed857-276c-40cb-ab3d-b674c9fc632b/bin/uautomizer-QkZJyEgLgS/../../sv-benchmarks/c/weaver/chl-poker-hand-symm.wvr.c [2022-11-23 03:29:50,406 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 03:29:50,711 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 03:29:50,711 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4ed857-276c-40cb-ab3d-b674c9fc632b/sv-benchmarks/c/weaver/chl-poker-hand-symm.wvr.c [2022-11-23 03:29:50,735 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4ed857-276c-40cb-ab3d-b674c9fc632b/bin/uautomizer-QkZJyEgLgS/data/737770a43/b63259f8cbde494092eee3c30d83d395/FLAGb9b766148 [2022-11-23 03:29:50,763 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4ed857-276c-40cb-ab3d-b674c9fc632b/bin/uautomizer-QkZJyEgLgS/data/737770a43/b63259f8cbde494092eee3c30d83d395 [2022-11-23 03:29:50,767 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 03:29:50,769 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 03:29:50,778 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 03:29:50,779 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 03:29:50,784 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 03:29:50,785 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:29:50" (1/1) ... [2022-11-23 03:29:50,786 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12229287 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:29:50, skipping insertion in model container [2022-11-23 03:29:50,787 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:29:50" (1/1) ... [2022-11-23 03:29:50,797 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 03:29:50,861 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 03:29:51,200 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_ba4ed857-276c-40cb-ab3d-b674c9fc632b/sv-benchmarks/c/weaver/chl-poker-hand-symm.wvr.c[12821,12834] [2022-11-23 03:29:51,214 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 03:29:51,236 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 03:29:51,327 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_ba4ed857-276c-40cb-ab3d-b674c9fc632b/sv-benchmarks/c/weaver/chl-poker-hand-symm.wvr.c[12821,12834] [2022-11-23 03:29:51,331 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 03:29:51,365 INFO L208 MainTranslator]: Completed translation [2022-11-23 03:29:51,366 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:29:51 WrapperNode [2022-11-23 03:29:51,369 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 03:29:51,371 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 03:29:51,372 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 03:29:51,372 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 03:29:51,381 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:29:51" (1/1) ... [2022-11-23 03:29:51,419 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:29:51" (1/1) ... [2022-11-23 03:29:51,530 INFO L138 Inliner]: procedures = 25, calls = 307, calls flagged for inlining = 69, calls inlined = 97, statements flattened = 1522 [2022-11-23 03:29:51,531 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 03:29:51,532 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 03:29:51,532 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 03:29:51,532 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 03:29:51,544 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:29:51" (1/1) ... [2022-11-23 03:29:51,544 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:29:51" (1/1) ... [2022-11-23 03:29:51,555 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:29:51" (1/1) ... [2022-11-23 03:29:51,556 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:29:51" (1/1) ... [2022-11-23 03:29:51,644 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:29:51" (1/1) ... [2022-11-23 03:29:51,674 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:29:51" (1/1) ... [2022-11-23 03:29:51,678 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:29:51" (1/1) ... [2022-11-23 03:29:51,711 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:29:51" (1/1) ... [2022-11-23 03:29:51,721 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 03:29:51,722 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 03:29:51,722 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 03:29:51,722 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 03:29:51,723 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:29:51" (1/1) ... [2022-11-23 03:29:51,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 03:29:51,753 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4ed857-276c-40cb-ab3d-b674c9fc632b/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:29:51,781 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4ed857-276c-40cb-ab3d-b674c9fc632b/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 03:29:51,811 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4ed857-276c-40cb-ab3d-b674c9fc632b/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 03:29:51,849 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 03:29:51,849 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 03:29:51,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 03:29:51,850 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 03:29:51,851 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-23 03:29:51,851 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-23 03:29:51,851 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-23 03:29:51,852 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-23 03:29:51,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 03:29:51,853 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-23 03:29:51,853 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-23 03:29:51,853 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-23 03:29:51,853 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 03:29:51,853 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 03:29:51,854 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 03:29:51,856 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-23 03:29:52,073 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 03:29:52,076 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 03:29:54,071 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 03:29:56,107 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 03:29:56,107 INFO L300 CfgBuilder]: Removed 12 assume(true) statements. [2022-11-23 03:29:56,111 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:29:56 BoogieIcfgContainer [2022-11-23 03:29:56,111 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 03:29:56,115 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 03:29:56,115 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 03:29:56,118 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 03:29:56,119 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:29:50" (1/3) ... [2022-11-23 03:29:56,121 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@604c853d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:29:56, skipping insertion in model container [2022-11-23 03:29:56,121 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:29:51" (2/3) ... [2022-11-23 03:29:56,122 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@604c853d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:29:56, skipping insertion in model container [2022-11-23 03:29:56,122 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:29:56" (3/3) ... [2022-11-23 03:29:56,123 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-poker-hand-symm.wvr.c [2022-11-23 03:29:56,133 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-23 03:29:56,144 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 03:29:56,145 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 03:29:56,145 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-23 03:29:56,488 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-23 03:29:56,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 430 places, 476 transitions, 968 flow [2022-11-23 03:29:56,869 INFO L130 PetriNetUnfolder]: 53/474 cut-off events. [2022-11-23 03:29:56,869 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-23 03:29:56,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 483 conditions, 474 events. 53/474 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 488 event pairs, 0 based on Foata normal form. 0/420 useless extension candidates. Maximal degree in co-relation 402. Up to 7 conditions per place. [2022-11-23 03:29:56,878 INFO L82 GeneralOperation]: Start removeDead. Operand has 430 places, 476 transitions, 968 flow [2022-11-23 03:29:56,886 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 419 places, 465 transitions, 942 flow [2022-11-23 03:29:56,890 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-23 03:29:56,904 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 419 places, 465 transitions, 942 flow [2022-11-23 03:29:56,907 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 419 places, 465 transitions, 942 flow [2022-11-23 03:29:56,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 419 places, 465 transitions, 942 flow [2022-11-23 03:29:57,028 INFO L130 PetriNetUnfolder]: 53/465 cut-off events. [2022-11-23 03:29:57,028 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-23 03:29:57,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 474 conditions, 465 events. 53/465 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 491 event pairs, 0 based on Foata normal form. 0/412 useless extension candidates. Maximal degree in co-relation 402. Up to 7 conditions per place. [2022-11-23 03:29:57,034 INFO L119 LiptonReduction]: Number of co-enabled transitions 5828 [2022-11-23 03:31:10,849 INFO L134 LiptonReduction]: Checked pairs total: 5767 [2022-11-23 03:31:10,849 INFO L136 LiptonReduction]: Total number of compositions: 554 [2022-11-23 03:31:10,866 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 03:31:10,873 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;@540d2dc7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 03:31:10,873 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-23 03:31:10,933 INFO L130 PetriNetUnfolder]: 16/38 cut-off events. [2022-11-23 03:31:10,933 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-23 03:31:10,934 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:31:10,934 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:31:10,935 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-23 03:31:10,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:31:10,940 INFO L85 PathProgramCache]: Analyzing trace with hash 1518943476, now seen corresponding path program 1 times [2022-11-23 03:31:10,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:31:10,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15342409] [2022-11-23 03:31:10,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:31:10,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:31:11,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:31:11,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:31:11,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:31:11,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15342409] [2022-11-23 03:31:11,805 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15342409] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:31:11,805 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:31:11,805 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 03:31:11,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59356047] [2022-11-23 03:31:11,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:31:11,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 03:31:11,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:31:11,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 03:31:11,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 03:31:12,031 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 388 out of 1030 [2022-11-23 03:31:12,035 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 39 transitions, 90 flow. Second operand has 3 states, 3 states have (on average 394.3333333333333) internal successors, (1183), 3 states have internal predecessors, (1183), 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) [2022-11-23 03:31:12,036 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:31:12,036 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 388 of 1030 [2022-11-23 03:31:12,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:31:12,595 INFO L130 PetriNetUnfolder]: 133/194 cut-off events. [2022-11-23 03:31:12,596 INFO L131 PetriNetUnfolder]: For 14/14 co-relation queries the response was YES. [2022-11-23 03:31:12,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 407 conditions, 194 events. 133/194 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 365 event pairs, 45 based on Foata normal form. 0/106 useless extension candidates. Maximal degree in co-relation 308. Up to 193 conditions per place. [2022-11-23 03:31:12,602 INFO L137 encePairwiseOnDemand]: 1025/1030 looper letters, 37 selfloop transitions, 4 changer transitions 0/41 dead transitions. [2022-11-23 03:31:12,603 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 41 transitions, 176 flow [2022-11-23 03:31:12,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 03:31:12,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 03:31:12,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1207 transitions. [2022-11-23 03:31:12,631 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3906148867313916 [2022-11-23 03:31:12,631 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1207 transitions. [2022-11-23 03:31:12,632 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1207 transitions. [2022-11-23 03:31:12,637 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:31:12,640 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1207 transitions. [2022-11-23 03:31:12,647 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 402.3333333333333) internal successors, (1207), 3 states have internal predecessors, (1207), 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) [2022-11-23 03:31:12,660 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1030.0) internal successors, (4120), 4 states have internal predecessors, (4120), 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) [2022-11-23 03:31:12,663 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1030.0) internal successors, (4120), 4 states have internal predecessors, (4120), 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) [2022-11-23 03:31:12,665 INFO L175 Difference]: Start difference. First operand has 30 places, 39 transitions, 90 flow. Second operand 3 states and 1207 transitions. [2022-11-23 03:31:12,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 41 transitions, 176 flow [2022-11-23 03:31:12,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 41 transitions, 168 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-23 03:31:12,671 INFO L231 Difference]: Finished difference. Result has 29 places, 41 transitions, 104 flow [2022-11-23 03:31:12,673 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1030, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=29, PETRI_TRANSITIONS=41} [2022-11-23 03:31:12,679 INFO L288 CegarLoopForPetriNet]: 30 programPoint places, -1 predicate places. [2022-11-23 03:31:12,679 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 41 transitions, 104 flow [2022-11-23 03:31:12,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 394.3333333333333) internal successors, (1183), 3 states have internal predecessors, (1183), 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) [2022-11-23 03:31:12,680 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:31:12,681 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] [2022-11-23 03:31:12,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 03:31:12,683 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-23 03:31:12,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:31:12,694 INFO L85 PathProgramCache]: Analyzing trace with hash 274756828, now seen corresponding path program 1 times [2022-11-23 03:31:12,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:31:12,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410247759] [2022-11-23 03:31:12,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:31:12,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:31:12,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:31:13,018 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 03:31:13,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:31:13,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410247759] [2022-11-23 03:31:13,021 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410247759] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:31:13,026 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:31:13,027 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 03:31:13,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695626670] [2022-11-23 03:31:13,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:31:13,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 03:31:13,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:31:13,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 03:31:13,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 03:31:13,220 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 388 out of 1030 [2022-11-23 03:31:13,223 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 41 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 395.0) internal successors, (1185), 3 states have internal predecessors, (1185), 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) [2022-11-23 03:31:13,223 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:31:13,223 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 388 of 1030 [2022-11-23 03:31:13,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:31:13,648 INFO L130 PetriNetUnfolder]: 133/198 cut-off events. [2022-11-23 03:31:13,648 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-23 03:31:13,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 414 conditions, 198 events. 133/198 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 363 event pairs, 45 based on Foata normal form. 0/111 useless extension candidates. Maximal degree in co-relation 393. Up to 195 conditions per place. [2022-11-23 03:31:13,650 INFO L137 encePairwiseOnDemand]: 1021/1030 looper letters, 37 selfloop transitions, 8 changer transitions 0/45 dead transitions. [2022-11-23 03:31:13,650 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 45 transitions, 202 flow [2022-11-23 03:31:13,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 03:31:13,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 03:31:13,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1211 transitions. [2022-11-23 03:31:13,654 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3919093851132686 [2022-11-23 03:31:13,655 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1211 transitions. [2022-11-23 03:31:13,655 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1211 transitions. [2022-11-23 03:31:13,656 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:31:13,656 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1211 transitions. [2022-11-23 03:31:13,659 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 403.6666666666667) internal successors, (1211), 3 states have internal predecessors, (1211), 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) [2022-11-23 03:31:13,665 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1030.0) internal successors, (4120), 4 states have internal predecessors, (4120), 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) [2022-11-23 03:31:13,668 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1030.0) internal successors, (4120), 4 states have internal predecessors, (4120), 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) [2022-11-23 03:31:13,668 INFO L175 Difference]: Start difference. First operand has 29 places, 41 transitions, 104 flow. Second operand 3 states and 1211 transitions. [2022-11-23 03:31:13,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 45 transitions, 202 flow [2022-11-23 03:31:13,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 45 transitions, 198 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-23 03:31:13,670 INFO L231 Difference]: Finished difference. Result has 31 places, 45 transitions, 142 flow [2022-11-23 03:31:13,671 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1030, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=142, PETRI_PLACES=31, PETRI_TRANSITIONS=45} [2022-11-23 03:31:13,671 INFO L288 CegarLoopForPetriNet]: 30 programPoint places, 1 predicate places. [2022-11-23 03:31:13,672 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 45 transitions, 142 flow [2022-11-23 03:31:13,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 395.0) internal successors, (1185), 3 states have internal predecessors, (1185), 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) [2022-11-23 03:31:13,673 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:31:13,673 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] [2022-11-23 03:31:13,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 03:31:13,674 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-23 03:31:13,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:31:13,675 INFO L85 PathProgramCache]: Analyzing trace with hash 928687754, now seen corresponding path program 1 times [2022-11-23 03:31:13,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:31:13,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194859147] [2022-11-23 03:31:13,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:31:13,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:31:13,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:31:14,075 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-23 03:31:14,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:31:14,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194859147] [2022-11-23 03:31:14,076 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194859147] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 03:31:14,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1271585365] [2022-11-23 03:31:14,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:31:14,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:31:14,077 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4ed857-276c-40cb-ab3d-b674c9fc632b/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:31:14,083 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4ed857-276c-40cb-ab3d-b674c9fc632b/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:31:14,087 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4ed857-276c-40cb-ab3d-b674c9fc632b/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 03:31:14,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:31:14,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-23 03:31:14,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:31:14,811 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-23 03:31:14,811 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 03:31:14,843 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-23 03:31:14,843 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1271585365] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 03:31:14,844 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 03:31:14,844 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2022-11-23 03:31:14,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471072049] [2022-11-23 03:31:14,844 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 03:31:14,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-23 03:31:14,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:31:14,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-23 03:31:14,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2022-11-23 03:31:15,276 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 372 out of 1030 [2022-11-23 03:31:15,281 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 45 transitions, 142 flow. Second operand has 8 states, 8 states have (on average 375.875) internal successors, (3007), 8 states have internal predecessors, (3007), 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) [2022-11-23 03:31:15,281 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:31:15,281 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 372 of 1030 [2022-11-23 03:31:15,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:31:15,898 INFO L130 PetriNetUnfolder]: 133/216 cut-off events. [2022-11-23 03:31:15,898 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-11-23 03:31:15,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 476 conditions, 216 events. 133/216 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 363 event pairs, 45 based on Foata normal form. 6/138 useless extension candidates. Maximal degree in co-relation 431. Up to 193 conditions per place. [2022-11-23 03:31:15,900 INFO L137 encePairwiseOnDemand]: 1013/1030 looper letters, 31 selfloop transitions, 32 changer transitions 0/63 dead transitions. [2022-11-23 03:31:15,900 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 63 transitions, 324 flow [2022-11-23 03:31:15,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-23 03:31:15,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-23 03:31:15,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 3057 transitions. [2022-11-23 03:31:15,910 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.37099514563106795 [2022-11-23 03:31:15,910 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 3057 transitions. [2022-11-23 03:31:15,910 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 3057 transitions. [2022-11-23 03:31:15,913 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:31:15,913 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 3057 transitions. [2022-11-23 03:31:15,921 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 382.125) internal successors, (3057), 8 states have internal predecessors, (3057), 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) [2022-11-23 03:31:15,936 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 1030.0) internal successors, (9270), 9 states have internal predecessors, (9270), 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) [2022-11-23 03:31:15,941 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 1030.0) internal successors, (9270), 9 states have internal predecessors, (9270), 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) [2022-11-23 03:31:15,942 INFO L175 Difference]: Start difference. First operand has 31 places, 45 transitions, 142 flow. Second operand 8 states and 3057 transitions. [2022-11-23 03:31:15,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 63 transitions, 324 flow [2022-11-23 03:31:15,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 63 transitions, 316 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-23 03:31:15,946 INFO L231 Difference]: Finished difference. Result has 41 places, 63 transitions, 318 flow [2022-11-23 03:31:15,946 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1030, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=318, PETRI_PLACES=41, PETRI_TRANSITIONS=63} [2022-11-23 03:31:15,948 INFO L288 CegarLoopForPetriNet]: 30 programPoint places, 11 predicate places. [2022-11-23 03:31:15,948 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 63 transitions, 318 flow [2022-11-23 03:31:15,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 375.875) internal successors, (3007), 8 states have internal predecessors, (3007), 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) [2022-11-23 03:31:15,950 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:31:15,951 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:31:15,965 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4ed857-276c-40cb-ab3d-b674c9fc632b/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-23 03:31:16,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4ed857-276c-40cb-ab3d-b674c9fc632b/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:31:16,159 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-23 03:31:16,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:31:16,160 INFO L85 PathProgramCache]: Analyzing trace with hash -2108442808, now seen corresponding path program 1 times [2022-11-23 03:31:16,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:31:16,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093175606] [2022-11-23 03:31:16,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:31:16,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:31:16,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:31:16,756 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-11-23 03:31:16,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:31:16,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093175606] [2022-11-23 03:31:16,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093175606] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 03:31:16,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [181779461] [2022-11-23 03:31:16,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:31:16,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:31:16,762 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4ed857-276c-40cb-ab3d-b674c9fc632b/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:31:16,763 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4ed857-276c-40cb-ab3d-b674c9fc632b/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:31:16,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4ed857-276c-40cb-ab3d-b674c9fc632b/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 03:31:17,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:31:17,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 580 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-23 03:31:17,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:31:17,613 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-11-23 03:31:17,614 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 03:31:17,705 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-11-23 03:31:17,705 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [181779461] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 03:31:17,705 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 03:31:17,706 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2022-11-23 03:31:17,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242662345] [2022-11-23 03:31:17,706 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 03:31:17,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-23 03:31:17,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:31:17,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-23 03:31:17,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=166, Unknown=0, NotChecked=0, Total=272 [2022-11-23 03:31:18,597 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 372 out of 1030 [2022-11-23 03:31:18,605 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 63 transitions, 318 flow. Second operand has 17 states, 17 states have (on average 374.47058823529414) internal successors, (6366), 17 states have internal predecessors, (6366), 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) [2022-11-23 03:31:18,605 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:31:18,605 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 372 of 1030 [2022-11-23 03:31:18,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:31:19,234 INFO L130 PetriNetUnfolder]: 133/228 cut-off events. [2022-11-23 03:31:19,234 INFO L131 PetriNetUnfolder]: For 22/22 co-relation queries the response was YES. [2022-11-23 03:31:19,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 586 conditions, 228 events. 133/228 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 363 event pairs, 45 based on Foata normal form. 11/158 useless extension candidates. Maximal degree in co-relation 512. Up to 193 conditions per place. [2022-11-23 03:31:19,236 INFO L137 encePairwiseOnDemand]: 1013/1030 looper letters, 31 selfloop transitions, 44 changer transitions 0/75 dead transitions. [2022-11-23 03:31:19,237 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 75 transitions, 536 flow [2022-11-23 03:31:19,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-23 03:31:19,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-23 03:31:19,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 6039 transitions. [2022-11-23 03:31:19,253 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3664441747572815 [2022-11-23 03:31:19,253 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 6039 transitions. [2022-11-23 03:31:19,253 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 6039 transitions. [2022-11-23 03:31:19,257 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:31:19,258 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 6039 transitions. [2022-11-23 03:31:19,271 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 377.4375) internal successors, (6039), 16 states have internal predecessors, (6039), 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) [2022-11-23 03:31:19,295 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 1030.0) internal successors, (17510), 17 states have internal predecessors, (17510), 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) [2022-11-23 03:31:19,300 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 1030.0) internal successors, (17510), 17 states have internal predecessors, (17510), 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) [2022-11-23 03:31:19,301 INFO L175 Difference]: Start difference. First operand has 41 places, 63 transitions, 318 flow. Second operand 16 states and 6039 transitions. [2022-11-23 03:31:19,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 75 transitions, 536 flow [2022-11-23 03:31:19,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 75 transitions, 498 flow, removed 15 selfloop flow, removed 2 redundant places. [2022-11-23 03:31:19,306 INFO L231 Difference]: Finished difference. Result has 56 places, 75 transitions, 462 flow [2022-11-23 03:31:19,306 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1030, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=462, PETRI_PLACES=56, PETRI_TRANSITIONS=75} [2022-11-23 03:31:19,307 INFO L288 CegarLoopForPetriNet]: 30 programPoint places, 26 predicate places. [2022-11-23 03:31:19,307 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 75 transitions, 462 flow [2022-11-23 03:31:19,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 374.47058823529414) internal successors, (6366), 17 states have internal predecessors, (6366), 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) [2022-11-23 03:31:19,310 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:31:19,310 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:31:19,325 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4ed857-276c-40cb-ab3d-b674c9fc632b/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-23 03:31:19,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4ed857-276c-40cb-ab3d-b674c9fc632b/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:31:19,519 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-23 03:31:19,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:31:19,520 INFO L85 PathProgramCache]: Analyzing trace with hash 731303954, now seen corresponding path program 2 times [2022-11-23 03:31:19,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:31:19,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612594245] [2022-11-23 03:31:19,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:31:19,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:31:19,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:31:20,257 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2022-11-23 03:31:20,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:31:20,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612594245] [2022-11-23 03:31:20,258 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612594245] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 03:31:20,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [820172740] [2022-11-23 03:31:20,262 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-23 03:31:20,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:31:20,262 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4ed857-276c-40cb-ab3d-b674c9fc632b/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:31:20,268 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4ed857-276c-40cb-ab3d-b674c9fc632b/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:31:20,291 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4ed857-276c-40cb-ab3d-b674c9fc632b/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-23 03:31:21,005 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-23 03:31:21,005 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 03:31:21,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-23 03:31:21,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:31:24,318 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 03:31:24,320 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 1369 treesize of output 1195 [2022-11-23 03:31:50,880 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2022-11-23 03:31:50,881 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 03:31:50,881 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [820172740] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:31:50,881 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 03:31:50,882 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 10 [2022-11-23 03:31:50,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489333484] [2022-11-23 03:31:50,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:31:50,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 03:31:50,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:31:50,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 03:31:50,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2022-11-23 03:31:51,081 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 396 out of 1030 [2022-11-23 03:31:51,083 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 75 transitions, 462 flow. Second operand has 4 states, 4 states have (on average 402.75) internal successors, (1611), 4 states have internal predecessors, (1611), 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) [2022-11-23 03:31:51,084 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:31:51,084 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 396 of 1030 [2022-11-23 03:31:51,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:31:52,133 INFO L130 PetriNetUnfolder]: 220/360 cut-off events. [2022-11-23 03:31:52,133 INFO L131 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2022-11-23 03:31:52,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 893 conditions, 360 events. 220/360 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 859 event pairs, 29 based on Foata normal form. 1/229 useless extension candidates. Maximal degree in co-relation 820. Up to 211 conditions per place. [2022-11-23 03:31:52,136 INFO L137 encePairwiseOnDemand]: 1015/1030 looper letters, 89 selfloop transitions, 13 changer transitions 6/108 dead transitions. [2022-11-23 03:31:52,136 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 108 transitions, 750 flow [2022-11-23 03:31:52,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 03:31:52,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-23 03:31:52,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2055 transitions. [2022-11-23 03:31:52,145 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3990291262135922 [2022-11-23 03:31:52,145 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2055 transitions. [2022-11-23 03:31:52,145 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2055 transitions. [2022-11-23 03:31:52,147 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:31:52,147 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2055 transitions. [2022-11-23 03:31:52,153 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 411.0) internal successors, (2055), 5 states have internal predecessors, (2055), 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) [2022-11-23 03:31:52,161 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 1030.0) internal successors, (6180), 6 states have internal predecessors, (6180), 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) [2022-11-23 03:31:52,163 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 1030.0) internal successors, (6180), 6 states have internal predecessors, (6180), 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) [2022-11-23 03:31:52,164 INFO L175 Difference]: Start difference. First operand has 56 places, 75 transitions, 462 flow. Second operand 5 states and 2055 transitions. [2022-11-23 03:31:52,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 108 transitions, 750 flow [2022-11-23 03:31:52,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 108 transitions, 636 flow, removed 25 selfloop flow, removed 8 redundant places. [2022-11-23 03:31:52,170 INFO L231 Difference]: Finished difference. Result has 55 places, 86 transitions, 438 flow [2022-11-23 03:31:52,171 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1030, PETRI_DIFFERENCE_MINUEND_FLOW=348, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=438, PETRI_PLACES=55, PETRI_TRANSITIONS=86} [2022-11-23 03:31:52,172 INFO L288 CegarLoopForPetriNet]: 30 programPoint places, 25 predicate places. [2022-11-23 03:31:52,172 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 86 transitions, 438 flow [2022-11-23 03:31:52,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 402.75) internal successors, (1611), 4 states have internal predecessors, (1611), 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) [2022-11-23 03:31:52,173 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:31:52,173 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:31:52,188 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4ed857-276c-40cb-ab3d-b674c9fc632b/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-23 03:31:52,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4ed857-276c-40cb-ab3d-b674c9fc632b/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:31:52,388 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-23 03:31:52,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:31:52,389 INFO L85 PathProgramCache]: Analyzing trace with hash 542948328, now seen corresponding path program 3 times [2022-11-23 03:31:52,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:31:52,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368878481] [2022-11-23 03:31:52,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:31:52,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:31:52,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:31:52,982 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2022-11-23 03:31:52,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:31:52,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368878481] [2022-11-23 03:31:52,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368878481] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 03:31:52,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1287940560] [2022-11-23 03:31:52,983 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 03:31:52,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:31:52,984 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4ed857-276c-40cb-ab3d-b674c9fc632b/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:31:52,988 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4ed857-276c-40cb-ab3d-b674c9fc632b/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:31:53,019 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4ed857-276c-40cb-ab3d-b674c9fc632b/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-23 03:31:53,749 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-23 03:31:53,749 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 03:31:53,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-23 03:31:53,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:31:55,867 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 03:31:55,868 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 1369 treesize of output 1195 [2022-11-23 03:33:58,215 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2022-11-23 03:33:58,216 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 03:33:58,216 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1287940560] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:33:58,216 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 03:33:58,216 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 10 [2022-11-23 03:33:58,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321649089] [2022-11-23 03:33:58,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:33:58,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 03:33:58,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:33:58,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 03:33:58,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2022-11-23 03:33:58,364 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 396 out of 1030 [2022-11-23 03:33:58,366 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 86 transitions, 438 flow. Second operand has 4 states, 4 states have (on average 402.75) internal successors, (1611), 4 states have internal predecessors, (1611), 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) [2022-11-23 03:33:58,366 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:33:58,366 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 396 of 1030 [2022-11-23 03:33:58,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:33:59,450 INFO L130 PetriNetUnfolder]: 222/374 cut-off events. [2022-11-23 03:33:59,450 INFO L131 PetriNetUnfolder]: For 89/89 co-relation queries the response was YES. [2022-11-23 03:33:59,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1175 conditions, 374 events. 222/374 cut-off events. For 89/89 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 988 event pairs, 31 based on Foata normal form. 3/269 useless extension candidates. Maximal degree in co-relation 1152. Up to 242 conditions per place. [2022-11-23 03:33:59,453 INFO L137 encePairwiseOnDemand]: 1016/1030 looper letters, 90 selfloop transitions, 12 changer transitions 5/107 dead transitions. [2022-11-23 03:33:59,453 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 107 transitions, 718 flow [2022-11-23 03:33:59,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 03:33:59,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-23 03:33:59,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2053 transitions. [2022-11-23 03:33:59,459 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.39864077669902914 [2022-11-23 03:33:59,459 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2053 transitions. [2022-11-23 03:33:59,459 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2053 transitions. [2022-11-23 03:33:59,460 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:33:59,460 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2053 transitions. [2022-11-23 03:33:59,464 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 410.6) internal successors, (2053), 5 states have internal predecessors, (2053), 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) [2022-11-23 03:33:59,471 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 1030.0) internal successors, (6180), 6 states have internal predecessors, (6180), 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) [2022-11-23 03:33:59,473 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 1030.0) internal successors, (6180), 6 states have internal predecessors, (6180), 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) [2022-11-23 03:33:59,474 INFO L175 Difference]: Start difference. First operand has 55 places, 86 transitions, 438 flow. Second operand 5 states and 2053 transitions. [2022-11-23 03:33:59,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 107 transitions, 718 flow [2022-11-23 03:33:59,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 107 transitions, 714 flow, removed 2 selfloop flow, removed 1 redundant places. [2022-11-23 03:33:59,478 INFO L231 Difference]: Finished difference. Result has 59 places, 86 transitions, 470 flow [2022-11-23 03:33:59,479 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1030, PETRI_DIFFERENCE_MINUEND_FLOW=436, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=470, PETRI_PLACES=59, PETRI_TRANSITIONS=86} [2022-11-23 03:33:59,479 INFO L288 CegarLoopForPetriNet]: 30 programPoint places, 29 predicate places. [2022-11-23 03:33:59,480 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 86 transitions, 470 flow [2022-11-23 03:33:59,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 402.75) internal successors, (1611), 4 states have internal predecessors, (1611), 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) [2022-11-23 03:33:59,480 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:33:59,481 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:33:59,491 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4ed857-276c-40cb-ab3d-b674c9fc632b/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-23 03:33:59,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4ed857-276c-40cb-ab3d-b674c9fc632b/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:33:59,689 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-23 03:33:59,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:33:59,690 INFO L85 PathProgramCache]: Analyzing trace with hash -1521184692, now seen corresponding path program 4 times [2022-11-23 03:33:59,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:33:59,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840583898] [2022-11-23 03:33:59,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:33:59,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:33:59,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:34:00,201 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2022-11-23 03:34:00,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:34:00,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840583898] [2022-11-23 03:34:00,204 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840583898] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 03:34:00,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1590480040] [2022-11-23 03:34:00,209 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-23 03:34:00,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:34:00,210 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4ed857-276c-40cb-ab3d-b674c9fc632b/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:34:00,212 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4ed857-276c-40cb-ab3d-b674c9fc632b/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:34:00,223 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4ed857-276c-40cb-ab3d-b674c9fc632b/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-23 03:34:01,102 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-23 03:34:01,102 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 03:34:01,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 688 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-23 03:34:01,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:34:01,183 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2022-11-23 03:34:01,183 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 03:34:01,269 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2022-11-23 03:34:01,269 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1590480040] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 03:34:01,269 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 03:34:01,269 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2022-11-23 03:34:01,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86801667] [2022-11-23 03:34:01,270 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 03:34:01,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-23 03:34:01,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:34:01,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-23 03:34:01,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=200, Unknown=0, NotChecked=0, Total=380 [2022-11-23 03:34:02,480 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 372 out of 1030 [2022-11-23 03:34:02,484 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 86 transitions, 470 flow. Second operand has 20 states, 20 states have (on average 374.25) internal successors, (7485), 20 states have internal predecessors, (7485), 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) [2022-11-23 03:34:02,484 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:34:02,484 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 372 of 1030 [2022-11-23 03:34:02,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:34:03,184 INFO L130 PetriNetUnfolder]: 221/382 cut-off events. [2022-11-23 03:34:03,184 INFO L131 PetriNetUnfolder]: For 311/311 co-relation queries the response was YES. [2022-11-23 03:34:03,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1332 conditions, 382 events. 221/382 cut-off events. For 311/311 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 868 event pairs, 69 based on Foata normal form. 14/288 useless extension candidates. Maximal degree in co-relation 1307. Up to 333 conditions per place. [2022-11-23 03:34:03,186 INFO L137 encePairwiseOnDemand]: 1013/1030 looper letters, 42 selfloop transitions, 58 changer transitions 0/100 dead transitions. [2022-11-23 03:34:03,187 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 100 transitions, 754 flow [2022-11-23 03:34:03,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-23 03:34:03,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-23 03:34:03,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 5311 transitions. [2022-11-23 03:34:03,198 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3683079056865465 [2022-11-23 03:34:03,198 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 5311 transitions. [2022-11-23 03:34:03,198 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 5311 transitions. [2022-11-23 03:34:03,200 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:34:03,200 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 5311 transitions. [2022-11-23 03:34:03,206 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 379.35714285714283) internal successors, (5311), 14 states have internal predecessors, (5311), 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) [2022-11-23 03:34:03,225 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 1030.0) internal successors, (15450), 15 states have internal predecessors, (15450), 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) [2022-11-23 03:34:03,231 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 1030.0) internal successors, (15450), 15 states have internal predecessors, (15450), 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) [2022-11-23 03:34:03,231 INFO L175 Difference]: Start difference. First operand has 59 places, 86 transitions, 470 flow. Second operand 14 states and 5311 transitions. [2022-11-23 03:34:03,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 100 transitions, 754 flow [2022-11-23 03:34:03,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 100 transitions, 741 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-11-23 03:34:03,236 INFO L231 Difference]: Finished difference. Result has 76 places, 100 transitions, 755 flow [2022-11-23 03:34:03,237 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1030, PETRI_DIFFERENCE_MINUEND_FLOW=457, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=755, PETRI_PLACES=76, PETRI_TRANSITIONS=100} [2022-11-23 03:34:03,237 INFO L288 CegarLoopForPetriNet]: 30 programPoint places, 46 predicate places. [2022-11-23 03:34:03,238 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 100 transitions, 755 flow [2022-11-23 03:34:03,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 374.25) internal successors, (7485), 20 states have internal predecessors, (7485), 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) [2022-11-23 03:34:03,240 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:34:03,241 INFO L209 CegarLoopForPetriNet]: trace histogram [12, 12, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:34:03,251 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4ed857-276c-40cb-ab3d-b674c9fc632b/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-11-23 03:34:03,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4ed857-276c-40cb-ab3d-b674c9fc632b/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:34:03,451 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-23 03:34:03,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:34:03,451 INFO L85 PathProgramCache]: Analyzing trace with hash 393541726, now seen corresponding path program 5 times [2022-11-23 03:34:03,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:34:03,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115569919] [2022-11-23 03:34:03,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:34:03,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:34:03,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:34:04,301 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2022-11-23 03:34:04,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:34:04,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115569919] [2022-11-23 03:34:04,302 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115569919] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 03:34:04,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1255104097] [2022-11-23 03:34:04,302 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-23 03:34:04,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:34:04,303 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4ed857-276c-40cb-ab3d-b674c9fc632b/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:34:04,308 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4ed857-276c-40cb-ab3d-b674c9fc632b/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:34:04,331 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba4ed857-276c-40cb-ab3d-b674c9fc632b/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process