./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-more-buffer-mult.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4059741d-dd44-4562-9e66-154b54921c91/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4059741d-dd44-4562-9e66-154b54921c91/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4059741d-dd44-4562-9e66-154b54921c91/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4059741d-dd44-4562-9e66-154b54921c91/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-buffer-mult.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4059741d-dd44-4562-9e66-154b54921c91/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4059741d-dd44-4562-9e66-154b54921c91/bin/uautomizer-TMbwUNV5ro --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 422a1b4addf42b15afc18c6b3ff87ab94cf45a5af46627fa0165a3dbe9c138e8 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 19:58:45,015 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 19:58:45,021 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 19:58:45,045 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 19:58:45,048 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 19:58:45,052 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 19:58:45,055 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 19:58:45,058 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 19:58:45,062 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 19:58:45,068 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 19:58:45,069 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 19:58:45,072 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 19:58:45,072 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 19:58:45,075 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 19:58:45,076 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 19:58:45,079 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 19:58:45,081 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 19:58:45,082 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 19:58:45,083 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 19:58:45,090 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 19:58:45,092 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 19:58:45,093 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 19:58:45,096 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 19:58:45,097 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 19:58:45,105 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 19:58:45,105 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 19:58:45,106 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 19:58:45,107 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 19:58:45,108 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 19:58:45,109 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 19:58:45,110 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 19:58:45,111 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 19:58:45,113 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 19:58:45,115 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 19:58:45,116 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 19:58:45,116 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 19:58:45,117 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 19:58:45,117 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 19:58:45,118 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 19:58:45,118 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 19:58:45,119 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 19:58:45,120 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4059741d-dd44-4562-9e66-154b54921c91/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-18 19:58:45,159 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 19:58:45,160 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 19:58:45,160 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 19:58:45,161 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 19:58:45,161 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 19:58:45,162 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 19:58:45,162 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 19:58:45,163 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 19:58:45,163 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 19:58:45,163 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 19:58:45,164 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 19:58:45,165 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 19:58:45,165 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 19:58:45,165 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 19:58:45,165 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 19:58:45,165 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 19:58:45,166 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 19:58:45,166 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 19:58:45,166 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 19:58:45,166 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 19:58:45,166 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 19:58:45,167 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 19:58:45,167 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 19:58:45,167 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 19:58:45,167 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:58:45,168 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 19:58:45,169 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 19:58:45,170 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 19:58:45,170 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 19:58:45,170 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 19:58:45,170 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 19:58:45,170 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 19:58:45,171 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 19:58:45,171 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4059741d-dd44-4562-9e66-154b54921c91/bin/uautomizer-TMbwUNV5ro/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4059741d-dd44-4562-9e66-154b54921c91/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 422a1b4addf42b15afc18c6b3ff87ab94cf45a5af46627fa0165a3dbe9c138e8 [2022-11-18 19:58:45,489 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 19:58:45,531 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 19:58:45,547 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 19:58:45,549 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 19:58:45,550 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 19:58:45,551 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4059741d-dd44-4562-9e66-154b54921c91/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/weaver/popl20-more-buffer-mult.wvr.c [2022-11-18 19:58:45,635 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4059741d-dd44-4562-9e66-154b54921c91/bin/uautomizer-TMbwUNV5ro/data/52301adaf/589ae7fd9991401faa421b5273f832ca/FLAG2192fddf7 [2022-11-18 19:58:46,192 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 19:58:46,193 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4059741d-dd44-4562-9e66-154b54921c91/sv-benchmarks/c/weaver/popl20-more-buffer-mult.wvr.c [2022-11-18 19:58:46,204 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4059741d-dd44-4562-9e66-154b54921c91/bin/uautomizer-TMbwUNV5ro/data/52301adaf/589ae7fd9991401faa421b5273f832ca/FLAG2192fddf7 [2022-11-18 19:58:46,535 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4059741d-dd44-4562-9e66-154b54921c91/bin/uautomizer-TMbwUNV5ro/data/52301adaf/589ae7fd9991401faa421b5273f832ca [2022-11-18 19:58:46,539 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 19:58:46,540 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 19:58:46,547 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 19:58:46,547 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 19:58:46,551 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 19:58:46,552 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:58:46" (1/1) ... [2022-11-18 19:58:46,553 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d6847e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:58:46, skipping insertion in model container [2022-11-18 19:58:46,553 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:58:46" (1/1) ... [2022-11-18 19:58:46,562 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 19:58:46,599 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 19:58:46,909 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4059741d-dd44-4562-9e66-154b54921c91/sv-benchmarks/c/weaver/popl20-more-buffer-mult.wvr.c[4218,4231] [2022-11-18 19:58:46,934 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:58:46,946 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 19:58:46,977 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4059741d-dd44-4562-9e66-154b54921c91/sv-benchmarks/c/weaver/popl20-more-buffer-mult.wvr.c[4218,4231] [2022-11-18 19:58:46,981 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:58:47,004 INFO L208 MainTranslator]: Completed translation [2022-11-18 19:58:47,005 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:58:47 WrapperNode [2022-11-18 19:58:47,005 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 19:58:47,006 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 19:58:47,006 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 19:58:47,006 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 19:58:47,013 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:58:47" (1/1) ... [2022-11-18 19:58:47,021 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:58:47" (1/1) ... [2022-11-18 19:58:47,057 INFO L138 Inliner]: procedures = 27, calls = 80, calls flagged for inlining = 18, calls inlined = 22, statements flattened = 307 [2022-11-18 19:58:47,057 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 19:58:47,058 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 19:58:47,058 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 19:58:47,058 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 19:58:47,069 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:58:47" (1/1) ... [2022-11-18 19:58:47,069 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:58:47" (1/1) ... [2022-11-18 19:58:47,074 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:58:47" (1/1) ... [2022-11-18 19:58:47,079 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:58:47" (1/1) ... [2022-11-18 19:58:47,090 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:58:47" (1/1) ... [2022-11-18 19:58:47,113 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:58:47" (1/1) ... [2022-11-18 19:58:47,116 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:58:47" (1/1) ... [2022-11-18 19:58:47,117 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:58:47" (1/1) ... [2022-11-18 19:58:47,131 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 19:58:47,132 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 19:58:47,132 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 19:58:47,132 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 19:58:47,133 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:58:47" (1/1) ... [2022-11-18 19:58:47,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:58:47,157 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4059741d-dd44-4562-9e66-154b54921c91/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:58:47,175 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4059741d-dd44-4562-9e66-154b54921c91/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 19:58:47,177 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4059741d-dd44-4562-9e66-154b54921c91/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 19:58:47,216 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 19:58:47,217 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 19:58:47,217 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 19:58:47,218 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 19:58:47,219 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-18 19:58:47,219 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-18 19:58:47,219 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-18 19:58:47,226 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-18 19:58:47,226 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-18 19:58:47,227 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-18 19:58:47,227 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-11-18 19:58:47,228 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-11-18 19:58:47,228 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 19:58:47,228 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-18 19:58:47,228 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-18 19:58:47,228 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 19:58:47,228 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 19:58:47,229 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 19:58:47,229 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 19:58:47,232 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 19:58:47,424 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 19:58:47,427 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 19:58:48,080 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 19:58:48,332 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 19:58:48,332 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-11-18 19:58:48,335 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:58:48 BoogieIcfgContainer [2022-11-18 19:58:48,335 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 19:58:48,338 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 19:58:48,338 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 19:58:48,342 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 19:58:48,342 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 07:58:46" (1/3) ... [2022-11-18 19:58:48,343 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70880c51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:58:48, skipping insertion in model container [2022-11-18 19:58:48,344 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:58:47" (2/3) ... [2022-11-18 19:58:48,344 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70880c51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:58:48, skipping insertion in model container [2022-11-18 19:58:48,344 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:58:48" (3/3) ... [2022-11-18 19:58:48,346 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-buffer-mult.wvr.c [2022-11-18 19:58:48,356 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 19:58:48,369 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 19:58:48,370 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-18 19:58:48,370 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 19:58:48,447 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-18 19:58:48,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 226 places, 231 transitions, 494 flow [2022-11-18 19:58:48,594 INFO L130 PetriNetUnfolder]: 18/227 cut-off events. [2022-11-18 19:58:48,595 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-18 19:58:48,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 244 conditions, 227 events. 18/227 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 114 event pairs, 0 based on Foata normal form. 0/208 useless extension candidates. Maximal degree in co-relation 188. Up to 2 conditions per place. [2022-11-18 19:58:48,602 INFO L82 GeneralOperation]: Start removeDead. Operand has 226 places, 231 transitions, 494 flow [2022-11-18 19:58:48,608 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 209 places, 214 transitions, 452 flow [2022-11-18 19:58:48,618 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 19:58:48,626 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;@c18c16c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 19:58:48,626 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-11-18 19:58:48,727 INFO L130 PetriNetUnfolder]: 18/213 cut-off events. [2022-11-18 19:58:48,727 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-18 19:58:48,727 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:58:48,728 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:58:48,728 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-18 19:58:48,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:58:48,740 INFO L85 PathProgramCache]: Analyzing trace with hash 480180329, now seen corresponding path program 1 times [2022-11-18 19:58:48,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:58:48,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284097872] [2022-11-18 19:58:48,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:58:48,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:58:48,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:58:49,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:58:49,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:58:49,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284097872] [2022-11-18 19:58:49,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284097872] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:58:49,109 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:58:49,109 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 19:58:49,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727650472] [2022-11-18 19:58:49,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:58:49,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-18 19:58:49,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:58:49,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-18 19:58:49,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 19:58:49,157 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 204 out of 231 [2022-11-18 19:58:49,162 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 214 transitions, 452 flow. Second operand has 2 states, 2 states have (on average 211.0) internal successors, (422), 2 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:58:49,162 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:58:49,162 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 204 of 231 [2022-11-18 19:58:49,163 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:58:49,551 INFO L130 PetriNetUnfolder]: 226/753 cut-off events. [2022-11-18 19:58:49,553 INFO L131 PetriNetUnfolder]: For 145/146 co-relation queries the response was YES. [2022-11-18 19:58:49,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1164 conditions, 753 events. 226/753 cut-off events. For 145/146 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 3403 event pairs, 121 based on Foata normal form. 197/865 useless extension candidates. Maximal degree in co-relation 906. Up to 306 conditions per place. [2022-11-18 19:58:49,567 INFO L137 encePairwiseOnDemand]: 219/231 looper letters, 14 selfloop transitions, 0 changer transitions 6/202 dead transitions. [2022-11-18 19:58:49,567 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 202 transitions, 456 flow [2022-11-18 19:58:49,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-18 19:58:49,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-18 19:58:49,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 434 transitions. [2022-11-18 19:58:49,592 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9393939393939394 [2022-11-18 19:58:49,593 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 434 transitions. [2022-11-18 19:58:49,593 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 434 transitions. [2022-11-18 19:58:49,598 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:58:49,600 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 434 transitions. [2022-11-18 19:58:49,606 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 217.0) internal successors, (434), 2 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:58:49,612 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 231.0) internal successors, (693), 3 states have internal predecessors, (693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:58:49,613 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 231.0) internal successors, (693), 3 states have internal predecessors, (693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:58:49,615 INFO L175 Difference]: Start difference. First operand has 209 places, 214 transitions, 452 flow. Second operand 2 states and 434 transitions. [2022-11-18 19:58:49,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 202 transitions, 456 flow [2022-11-18 19:58:49,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 202 transitions, 440 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-11-18 19:58:49,627 INFO L231 Difference]: Finished difference. Result has 202 places, 196 transitions, 400 flow [2022-11-18 19:58:49,629 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=412, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=400, PETRI_PLACES=202, PETRI_TRANSITIONS=196} [2022-11-18 19:58:49,636 INFO L288 CegarLoopForPetriNet]: 209 programPoint places, -7 predicate places. [2022-11-18 19:58:49,637 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 196 transitions, 400 flow [2022-11-18 19:58:49,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 211.0) internal successors, (422), 2 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:58:49,638 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:58:49,639 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:58:49,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 19:58:49,640 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-18 19:58:49,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:58:49,641 INFO L85 PathProgramCache]: Analyzing trace with hash 90777481, now seen corresponding path program 1 times [2022-11-18 19:58:49,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:58:49,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63456178] [2022-11-18 19:58:49,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:58:49,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:58:49,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:58:50,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:58:50,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:58:50,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63456178] [2022-11-18 19:58:50,372 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63456178] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:58:50,372 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:58:50,373 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:58:50,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440704285] [2022-11-18 19:58:50,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:58:50,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:58:50,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:58:50,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:58:50,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:58:50,383 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 231 [2022-11-18 19:58:50,386 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 196 transitions, 400 flow. Second operand has 5 states, 5 states have (on average 179.6) internal successors, (898), 5 states have internal predecessors, (898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:58:50,386 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:58:50,386 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 231 [2022-11-18 19:58:50,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:58:50,712 INFO L130 PetriNetUnfolder]: 251/831 cut-off events. [2022-11-18 19:58:50,713 INFO L131 PetriNetUnfolder]: For 39/40 co-relation queries the response was YES. [2022-11-18 19:58:50,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1227 conditions, 831 events. 251/831 cut-off events. For 39/40 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 3899 event pairs, 32 based on Foata normal form. 1/748 useless extension candidates. Maximal degree in co-relation 1224. Up to 249 conditions per place. [2022-11-18 19:58:50,726 INFO L137 encePairwiseOnDemand]: 225/231 looper letters, 46 selfloop transitions, 3 changer transitions 4/210 dead transitions. [2022-11-18 19:58:50,727 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 210 transitions, 539 flow [2022-11-18 19:58:50,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:58:50,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 19:58:50,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 919 transitions. [2022-11-18 19:58:50,730 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7956709956709956 [2022-11-18 19:58:50,731 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 919 transitions. [2022-11-18 19:58:50,731 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 919 transitions. [2022-11-18 19:58:50,732 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:58:50,732 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 919 transitions. [2022-11-18 19:58:50,735 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 183.8) internal successors, (919), 5 states have internal predecessors, (919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:58:50,739 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 231.0) internal successors, (1386), 6 states have internal predecessors, (1386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:58:50,741 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 231.0) internal successors, (1386), 6 states have internal predecessors, (1386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:58:50,741 INFO L175 Difference]: Start difference. First operand has 202 places, 196 transitions, 400 flow. Second operand 5 states and 919 transitions. [2022-11-18 19:58:50,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 210 transitions, 539 flow [2022-11-18 19:58:50,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 210 transitions, 539 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 19:58:50,751 INFO L231 Difference]: Finished difference. Result has 203 places, 198 transitions, 423 flow [2022-11-18 19:58:50,752 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=400, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=423, PETRI_PLACES=203, PETRI_TRANSITIONS=198} [2022-11-18 19:58:50,753 INFO L288 CegarLoopForPetriNet]: 209 programPoint places, -6 predicate places. [2022-11-18 19:58:50,753 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 198 transitions, 423 flow [2022-11-18 19:58:50,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 179.6) internal successors, (898), 5 states have internal predecessors, (898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:58:50,754 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:58:50,754 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:58:50,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 19:58:50,755 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-18 19:58:50,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:58:50,756 INFO L85 PathProgramCache]: Analyzing trace with hash -203419144, now seen corresponding path program 1 times [2022-11-18 19:58:50,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:58:50,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097152099] [2022-11-18 19:58:50,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:58:50,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:58:50,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:58:51,043 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:58:51,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:58:51,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097152099] [2022-11-18 19:58:51,044 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097152099] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:58:51,044 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:58:51,044 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:58:51,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079362856] [2022-11-18 19:58:51,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:58:51,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:58:51,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:58:51,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:58:51,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:58:51,049 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 231 [2022-11-18 19:58:51,050 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 198 transitions, 423 flow. Second operand has 3 states, 3 states have (on average 203.0) internal successors, (609), 3 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:58:51,050 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:58:51,050 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 231 [2022-11-18 19:58:51,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:58:51,323 INFO L130 PetriNetUnfolder]: 395/1111 cut-off events. [2022-11-18 19:58:51,323 INFO L131 PetriNetUnfolder]: For 214/216 co-relation queries the response was YES. [2022-11-18 19:58:51,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1910 conditions, 1111 events. 395/1111 cut-off events. For 214/216 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 5725 event pairs, 70 based on Foata normal form. 18/1018 useless extension candidates. Maximal degree in co-relation 1903. Up to 431 conditions per place. [2022-11-18 19:58:51,333 INFO L137 encePairwiseOnDemand]: 228/231 looper letters, 33 selfloop transitions, 2 changer transitions 0/211 dead transitions. [2022-11-18 19:58:51,333 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 211 transitions, 531 flow [2022-11-18 19:58:51,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:58:51,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 19:58:51,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 627 transitions. [2022-11-18 19:58:51,335 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9047619047619048 [2022-11-18 19:58:51,335 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 627 transitions. [2022-11-18 19:58:51,336 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 627 transitions. [2022-11-18 19:58:51,336 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:58:51,336 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 627 transitions. [2022-11-18 19:58:51,338 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 209.0) internal successors, (627), 3 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:58:51,339 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 231.0) internal successors, (924), 4 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:58:51,340 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 231.0) internal successors, (924), 4 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:58:51,340 INFO L175 Difference]: Start difference. First operand has 203 places, 198 transitions, 423 flow. Second operand 3 states and 627 transitions. [2022-11-18 19:58:51,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 211 transitions, 531 flow [2022-11-18 19:58:51,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 211 transitions, 523 flow, removed 2 selfloop flow, removed 3 redundant places. [2022-11-18 19:58:51,345 INFO L231 Difference]: Finished difference. Result has 201 places, 199 transitions, 430 flow [2022-11-18 19:58:51,346 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=416, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=430, PETRI_PLACES=201, PETRI_TRANSITIONS=199} [2022-11-18 19:58:51,346 INFO L288 CegarLoopForPetriNet]: 209 programPoint places, -8 predicate places. [2022-11-18 19:58:51,347 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 199 transitions, 430 flow [2022-11-18 19:58:51,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 203.0) internal successors, (609), 3 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:58:51,347 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:58:51,348 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:58:51,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 19:58:51,348 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-18 19:58:51,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:58:51,349 INFO L85 PathProgramCache]: Analyzing trace with hash 941653736, now seen corresponding path program 1 times [2022-11-18 19:58:51,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:58:51,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139559927] [2022-11-18 19:58:51,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:58:51,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:58:51,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:58:51,516 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:58:51,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:58:51,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139559927] [2022-11-18 19:58:51,517 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139559927] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:58:51,517 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:58:51,517 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:58:51,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585372937] [2022-11-18 19:58:51,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:58:51,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:58:51,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:58:51,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:58:51,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:58:51,520 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 231 [2022-11-18 19:58:51,521 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 199 transitions, 430 flow. Second operand has 3 states, 3 states have (on average 203.0) internal successors, (609), 3 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:58:51,521 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:58:51,521 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 231 [2022-11-18 19:58:51,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:58:51,798 INFO L130 PetriNetUnfolder]: 299/1051 cut-off events. [2022-11-18 19:58:51,798 INFO L131 PetriNetUnfolder]: For 359/360 co-relation queries the response was YES. [2022-11-18 19:58:51,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1782 conditions, 1051 events. 299/1051 cut-off events. For 359/360 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 5600 event pairs, 106 based on Foata normal form. 14/916 useless extension candidates. Maximal degree in co-relation 1776. Up to 353 conditions per place. [2022-11-18 19:58:51,807 INFO L137 encePairwiseOnDemand]: 228/231 looper letters, 34 selfloop transitions, 2 changer transitions 0/212 dead transitions. [2022-11-18 19:58:51,808 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 212 transitions, 547 flow [2022-11-18 19:58:51,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:58:51,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 19:58:51,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 626 transitions. [2022-11-18 19:58:51,817 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9033189033189033 [2022-11-18 19:58:51,817 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 626 transitions. [2022-11-18 19:58:51,817 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 626 transitions. [2022-11-18 19:58:51,818 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:58:51,818 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 626 transitions. [2022-11-18 19:58:51,820 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 208.66666666666666) internal successors, (626), 3 states have internal predecessors, (626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:58:51,821 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 231.0) internal successors, (924), 4 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:58:51,821 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 231.0) internal successors, (924), 4 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:58:51,822 INFO L175 Difference]: Start difference. First operand has 201 places, 199 transitions, 430 flow. Second operand 3 states and 626 transitions. [2022-11-18 19:58:51,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 212 transitions, 547 flow [2022-11-18 19:58:51,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 212 transitions, 544 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 19:58:51,826 INFO L231 Difference]: Finished difference. Result has 203 places, 200 transitions, 442 flow [2022-11-18 19:58:51,827 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=428, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=442, PETRI_PLACES=203, PETRI_TRANSITIONS=200} [2022-11-18 19:58:51,827 INFO L288 CegarLoopForPetriNet]: 209 programPoint places, -6 predicate places. [2022-11-18 19:58:51,828 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 200 transitions, 442 flow [2022-11-18 19:58:51,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 203.0) internal successors, (609), 3 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:58:51,828 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:58:51,829 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:58:51,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 19:58:51,829 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-18 19:58:51,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:58:51,830 INFO L85 PathProgramCache]: Analyzing trace with hash -1266970559, now seen corresponding path program 1 times [2022-11-18 19:58:51,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:58:51,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315548350] [2022-11-18 19:58:51,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:58:51,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:58:51,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:58:52,186 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:58:52,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:58:52,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315548350] [2022-11-18 19:58:52,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315548350] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:58:52,187 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:58:52,187 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 19:58:52,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92747217] [2022-11-18 19:58:52,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:58:52,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:58:52,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:58:52,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:58:52,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:58:52,191 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 231 [2022-11-18 19:58:52,192 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 200 transitions, 442 flow. Second operand has 6 states, 6 states have (on average 182.83333333333334) internal successors, (1097), 6 states have internal predecessors, (1097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:58:52,192 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:58:52,193 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 231 [2022-11-18 19:58:52,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:58:52,620 INFO L130 PetriNetUnfolder]: 212/971 cut-off events. [2022-11-18 19:58:52,620 INFO L131 PetriNetUnfolder]: For 388/389 co-relation queries the response was YES. [2022-11-18 19:58:52,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1698 conditions, 971 events. 212/971 cut-off events. For 388/389 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 4694 event pairs, 98 based on Foata normal form. 12/882 useless extension candidates. Maximal degree in co-relation 1691. Up to 289 conditions per place. [2022-11-18 19:58:52,630 INFO L137 encePairwiseOnDemand]: 221/231 looper letters, 63 selfloop transitions, 11 changer transitions 0/230 dead transitions. [2022-11-18 19:58:52,631 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 230 transitions, 671 flow [2022-11-18 19:58:52,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 19:58:52,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 19:58:52,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1671 transitions. [2022-11-18 19:58:52,636 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8037518037518038 [2022-11-18 19:58:52,636 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1671 transitions. [2022-11-18 19:58:52,637 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1671 transitions. [2022-11-18 19:58:52,638 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:58:52,638 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1671 transitions. [2022-11-18 19:58:52,643 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 185.66666666666666) internal successors, (1671), 9 states have internal predecessors, (1671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:58:52,647 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 231.0) internal successors, (2310), 10 states have internal predecessors, (2310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:58:52,649 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 231.0) internal successors, (2310), 10 states have internal predecessors, (2310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:58:52,650 INFO L175 Difference]: Start difference. First operand has 203 places, 200 transitions, 442 flow. Second operand 9 states and 1671 transitions. [2022-11-18 19:58:52,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 230 transitions, 671 flow [2022-11-18 19:58:52,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 230 transitions, 668 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 19:58:52,656 INFO L231 Difference]: Finished difference. Result has 212 places, 204 transitions, 482 flow [2022-11-18 19:58:52,657 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=440, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=482, PETRI_PLACES=212, PETRI_TRANSITIONS=204} [2022-11-18 19:58:52,658 INFO L288 CegarLoopForPetriNet]: 209 programPoint places, 3 predicate places. [2022-11-18 19:58:52,658 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 204 transitions, 482 flow [2022-11-18 19:58:52,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 182.83333333333334) internal successors, (1097), 6 states have internal predecessors, (1097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:58:52,659 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:58:52,659 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:58:52,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 19:58:52,660 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-18 19:58:52,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:58:52,661 INFO L85 PathProgramCache]: Analyzing trace with hash 2106766371, now seen corresponding path program 1 times [2022-11-18 19:58:52,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:58:52,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84569284] [2022-11-18 19:58:52,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:58:52,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:58:52,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:58:53,035 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:58:53,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:58:53,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84569284] [2022-11-18 19:58:53,036 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84569284] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:58:53,036 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:58:53,037 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 19:58:53,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895442585] [2022-11-18 19:58:53,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:58:53,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:58:53,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:58:53,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:58:53,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:58:53,041 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 231 [2022-11-18 19:58:53,042 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 204 transitions, 482 flow. Second operand has 6 states, 6 states have (on average 182.83333333333334) internal successors, (1097), 6 states have internal predecessors, (1097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:58:53,043 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:58:53,043 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 231 [2022-11-18 19:58:53,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:58:53,491 INFO L130 PetriNetUnfolder]: 236/1235 cut-off events. [2022-11-18 19:58:53,492 INFO L131 PetriNetUnfolder]: For 512/514 co-relation queries the response was YES. [2022-11-18 19:58:53,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2097 conditions, 1235 events. 236/1235 cut-off events. For 512/514 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 6880 event pairs, 110 based on Foata normal form. 20/1127 useless extension candidates. Maximal degree in co-relation 2088. Up to 346 conditions per place. [2022-11-18 19:58:53,504 INFO L137 encePairwiseOnDemand]: 223/231 looper letters, 58 selfloop transitions, 8 changer transitions 0/222 dead transitions. [2022-11-18 19:58:53,504 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 222 transitions, 672 flow [2022-11-18 19:58:53,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:58:53,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 19:58:53,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1303 transitions. [2022-11-18 19:58:53,508 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8058132343846629 [2022-11-18 19:58:53,509 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1303 transitions. [2022-11-18 19:58:53,509 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1303 transitions. [2022-11-18 19:58:53,510 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:58:53,510 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1303 transitions. [2022-11-18 19:58:53,524 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 186.14285714285714) internal successors, (1303), 7 states have internal predecessors, (1303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:58:53,528 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 231.0) internal successors, (1848), 8 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:58:53,529 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 231.0) internal successors, (1848), 8 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:58:53,529 INFO L175 Difference]: Start difference. First operand has 212 places, 204 transitions, 482 flow. Second operand 7 states and 1303 transitions. [2022-11-18 19:58:53,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 222 transitions, 672 flow [2022-11-18 19:58:53,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 222 transitions, 663 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 19:58:53,538 INFO L231 Difference]: Finished difference. Result has 217 places, 206 transitions, 503 flow [2022-11-18 19:58:53,539 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=473, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=503, PETRI_PLACES=217, PETRI_TRANSITIONS=206} [2022-11-18 19:58:53,543 INFO L288 CegarLoopForPetriNet]: 209 programPoint places, 8 predicate places. [2022-11-18 19:58:53,543 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 206 transitions, 503 flow [2022-11-18 19:58:53,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 182.83333333333334) internal successors, (1097), 6 states have internal predecessors, (1097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:58:53,544 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:58:53,544 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:58:53,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 19:58:53,545 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-18 19:58:53,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:58:53,545 INFO L85 PathProgramCache]: Analyzing trace with hash -2119705773, now seen corresponding path program 1 times [2022-11-18 19:58:53,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:58:53,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357715062] [2022-11-18 19:58:53,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:58:53,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:58:53,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:58:54,543 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 19:58:54,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:58:54,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357715062] [2022-11-18 19:58:54,543 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357715062] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:58:54,544 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:58:54,544 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 19:58:54,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529970707] [2022-11-18 19:58:54,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:58:54,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 19:58:54,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:58:54,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 19:58:54,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:58:54,548 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 231 [2022-11-18 19:58:54,550 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 206 transitions, 503 flow. Second operand has 8 states, 8 states have (on average 186.625) internal successors, (1493), 8 states have internal predecessors, (1493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:58:54,550 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:58:54,550 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 231 [2022-11-18 19:58:54,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:58:57,584 INFO L130 PetriNetUnfolder]: 6034/11436 cut-off events. [2022-11-18 19:58:57,584 INFO L131 PetriNetUnfolder]: For 3931/3931 co-relation queries the response was YES. [2022-11-18 19:58:57,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23511 conditions, 11436 events. 6034/11436 cut-off events. For 3931/3931 co-relation queries the response was YES. Maximal size of possible extension queue 425. Compared 87653 event pairs, 1601 based on Foata normal form. 0/9994 useless extension candidates. Maximal degree in co-relation 23500. Up to 3990 conditions per place. [2022-11-18 19:58:57,683 INFO L137 encePairwiseOnDemand]: 221/231 looper letters, 100 selfloop transitions, 15 changer transitions 10/292 dead transitions. [2022-11-18 19:58:57,684 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 292 transitions, 1026 flow [2022-11-18 19:58:57,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 19:58:57,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-18 19:58:57,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1581 transitions. [2022-11-18 19:58:57,688 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8555194805194806 [2022-11-18 19:58:57,688 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1581 transitions. [2022-11-18 19:58:57,689 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1581 transitions. [2022-11-18 19:58:57,690 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:58:57,690 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1581 transitions. [2022-11-18 19:58:57,695 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 197.625) internal successors, (1581), 8 states have internal predecessors, (1581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:58:57,699 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 231.0) internal successors, (2079), 9 states have internal predecessors, (2079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:58:57,700 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 231.0) internal successors, (2079), 9 states have internal predecessors, (2079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:58:57,700 INFO L175 Difference]: Start difference. First operand has 217 places, 206 transitions, 503 flow. Second operand 8 states and 1581 transitions. [2022-11-18 19:58:57,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 292 transitions, 1026 flow [2022-11-18 19:58:57,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 292 transitions, 1014 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 19:58:57,709 INFO L231 Difference]: Finished difference. Result has 224 places, 218 transitions, 575 flow [2022-11-18 19:58:57,709 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=491, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=575, PETRI_PLACES=224, PETRI_TRANSITIONS=218} [2022-11-18 19:58:57,710 INFO L288 CegarLoopForPetriNet]: 209 programPoint places, 15 predicate places. [2022-11-18 19:58:57,710 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 218 transitions, 575 flow [2022-11-18 19:58:57,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 186.625) internal successors, (1493), 8 states have internal predecessors, (1493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:58:57,711 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:58:57,712 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:58:57,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 19:58:57,712 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-18 19:58:57,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:58:57,713 INFO L85 PathProgramCache]: Analyzing trace with hash 887784357, now seen corresponding path program 2 times [2022-11-18 19:58:57,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:58:57,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779282009] [2022-11-18 19:58:57,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:58:57,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:58:57,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:58:58,294 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:58:58,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:58:58,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779282009] [2022-11-18 19:58:58,295 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779282009] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:58:58,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1236481784] [2022-11-18 19:58:58,295 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:58:58,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:58:58,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4059741d-dd44-4562-9e66-154b54921c91/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:58:58,302 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4059741d-dd44-4562-9e66-154b54921c91/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:58:58,322 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4059741d-dd44-4562-9e66-154b54921c91/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 19:58:58,510 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 19:58:58,510 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:58:58,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 465 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 19:58:58,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:58:59,456 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 19:58:59,456 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:58:59,910 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 19:58:59,910 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1236481784] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-18 19:58:59,911 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:58:59,911 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5, 7] total 14 [2022-11-18 19:58:59,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699446916] [2022-11-18 19:58:59,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:58:59,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:58:59,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:58:59,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:58:59,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2022-11-18 19:58:59,914 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 231 [2022-11-18 19:58:59,916 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 218 transitions, 575 flow. Second operand has 7 states, 7 states have (on average 190.57142857142858) internal successors, (1334), 7 states have internal predecessors, (1334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:58:59,916 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:58:59,916 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 231 [2022-11-18 19:58:59,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:59:04,106 INFO L130 PetriNetUnfolder]: 8321/15502 cut-off events. [2022-11-18 19:59:04,106 INFO L131 PetriNetUnfolder]: For 8539/8541 co-relation queries the response was YES. [2022-11-18 19:59:04,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35964 conditions, 15502 events. 8321/15502 cut-off events. For 8539/8541 co-relation queries the response was YES. Maximal size of possible extension queue 583. Compared 123409 event pairs, 698 based on Foata normal form. 356/15369 useless extension candidates. Maximal degree in co-relation 35949. Up to 3009 conditions per place. [2022-11-18 19:59:04,325 INFO L137 encePairwiseOnDemand]: 221/231 looper letters, 146 selfloop transitions, 39 changer transitions 7/363 dead transitions. [2022-11-18 19:59:04,325 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 363 transitions, 1493 flow [2022-11-18 19:59:04,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 19:59:04,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-18 19:59:04,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2402 transitions. [2022-11-18 19:59:04,331 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8665223665223665 [2022-11-18 19:59:04,331 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2402 transitions. [2022-11-18 19:59:04,332 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2402 transitions. [2022-11-18 19:59:04,333 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:59:04,333 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2402 transitions. [2022-11-18 19:59:04,339 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 200.16666666666666) internal successors, (2402), 12 states have internal predecessors, (2402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:59:04,344 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 231.0) internal successors, (3003), 13 states have internal predecessors, (3003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:59:04,347 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 231.0) internal successors, (3003), 13 states have internal predecessors, (3003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:59:04,348 INFO L175 Difference]: Start difference. First operand has 224 places, 218 transitions, 575 flow. Second operand 12 states and 2402 transitions. [2022-11-18 19:59:04,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 363 transitions, 1493 flow [2022-11-18 19:59:04,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 363 transitions, 1491 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 19:59:04,364 INFO L231 Difference]: Finished difference. Result has 244 places, 253 transitions, 893 flow [2022-11-18 19:59:04,365 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=573, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=893, PETRI_PLACES=244, PETRI_TRANSITIONS=253} [2022-11-18 19:59:04,368 INFO L288 CegarLoopForPetriNet]: 209 programPoint places, 35 predicate places. [2022-11-18 19:59:04,368 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 253 transitions, 893 flow [2022-11-18 19:59:04,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 190.57142857142858) internal successors, (1334), 7 states have internal predecessors, (1334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:59:04,369 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:59:04,369 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:59:04,382 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4059741d-dd44-4562-9e66-154b54921c91/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 19:59:04,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4059741d-dd44-4562-9e66-154b54921c91/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-18 19:59:04,583 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-18 19:59:04,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:59:04,584 INFO L85 PathProgramCache]: Analyzing trace with hash 1277982831, now seen corresponding path program 3 times [2022-11-18 19:59:04,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:59:04,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124426073] [2022-11-18 19:59:04,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:59:04,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:59:04,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:59:05,459 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 19:59:05,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:59:05,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124426073] [2022-11-18 19:59:05,460 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124426073] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:59:05,460 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:59:05,460 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 19:59:05,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452316771] [2022-11-18 19:59:05,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:59:05,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 19:59:05,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:59:05,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 19:59:05,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:59:05,464 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 231 [2022-11-18 19:59:05,466 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 253 transitions, 893 flow. Second operand has 8 states, 8 states have (on average 186.625) internal successors, (1493), 8 states have internal predecessors, (1493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:59:05,466 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:59:05,466 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 231 [2022-11-18 19:59:05,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:59:11,352 INFO L130 PetriNetUnfolder]: 12596/25402 cut-off events. [2022-11-18 19:59:11,352 INFO L131 PetriNetUnfolder]: For 35683/35689 co-relation queries the response was YES. [2022-11-18 19:59:11,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70019 conditions, 25402 events. 12596/25402 cut-off events. For 35683/35689 co-relation queries the response was YES. Maximal size of possible extension queue 1107. Compared 237566 event pairs, 3080 based on Foata normal form. 84/24341 useless extension candidates. Maximal degree in co-relation 69993. Up to 6419 conditions per place. [2022-11-18 19:59:11,571 INFO L137 encePairwiseOnDemand]: 221/231 looper letters, 219 selfloop transitions, 47 changer transitions 8/441 dead transitions. [2022-11-18 19:59:11,571 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 441 transitions, 2408 flow [2022-11-18 19:59:11,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 19:59:11,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-18 19:59:11,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2203 transitions. [2022-11-18 19:59:11,576 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8669815033451397 [2022-11-18 19:59:11,577 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2203 transitions. [2022-11-18 19:59:11,577 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2203 transitions. [2022-11-18 19:59:11,578 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:59:11,578 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2203 transitions. [2022-11-18 19:59:11,583 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 200.27272727272728) internal successors, (2203), 11 states have internal predecessors, (2203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:59:11,588 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 231.0) internal successors, (2772), 12 states have internal predecessors, (2772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:59:11,589 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 231.0) internal successors, (2772), 12 states have internal predecessors, (2772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:59:11,589 INFO L175 Difference]: Start difference. First operand has 244 places, 253 transitions, 893 flow. Second operand 11 states and 2203 transitions. [2022-11-18 19:59:11,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 441 transitions, 2408 flow [2022-11-18 19:59:11,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 441 transitions, 2401 flow, removed 3 selfloop flow, removed 1 redundant places. [2022-11-18 19:59:11,833 INFO L231 Difference]: Finished difference. Result has 260 places, 277 transitions, 1251 flow [2022-11-18 19:59:11,834 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=888, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1251, PETRI_PLACES=260, PETRI_TRANSITIONS=277} [2022-11-18 19:59:11,835 INFO L288 CegarLoopForPetriNet]: 209 programPoint places, 51 predicate places. [2022-11-18 19:59:11,835 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 277 transitions, 1251 flow [2022-11-18 19:59:11,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 186.625) internal successors, (1493), 8 states have internal predecessors, (1493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:59:11,836 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:59:11,836 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:59:11,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-18 19:59:11,837 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-18 19:59:11,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:59:11,837 INFO L85 PathProgramCache]: Analyzing trace with hash -1799453555, now seen corresponding path program 4 times [2022-11-18 19:59:11,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:59:11,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989490956] [2022-11-18 19:59:11,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:59:11,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:59:11,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:59:12,726 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 19:59:12,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:59:12,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989490956] [2022-11-18 19:59:12,727 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989490956] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:59:12,727 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:59:12,727 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 19:59:12,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258561113] [2022-11-18 19:59:12,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:59:12,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 19:59:12,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:59:12,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 19:59:12,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:59:12,731 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 231 [2022-11-18 19:59:12,733 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 277 transitions, 1251 flow. Second operand has 8 states, 8 states have (on average 186.625) internal successors, (1493), 8 states have internal predecessors, (1493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:59:12,733 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:59:12,733 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 231 [2022-11-18 19:59:12,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:59:19,909 INFO L130 PetriNetUnfolder]: 14628/28810 cut-off events. [2022-11-18 19:59:19,909 INFO L131 PetriNetUnfolder]: For 61079/61115 co-relation queries the response was YES. [2022-11-18 19:59:20,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87766 conditions, 28810 events. 14628/28810 cut-off events. For 61079/61115 co-relation queries the response was YES. Maximal size of possible extension queue 1361. Compared 273369 event pairs, 2681 based on Foata normal form. 48/27764 useless extension candidates. Maximal degree in co-relation 87733. Up to 7010 conditions per place. [2022-11-18 19:59:20,291 INFO L137 encePairwiseOnDemand]: 221/231 looper letters, 205 selfloop transitions, 76 changer transitions 6/454 dead transitions. [2022-11-18 19:59:20,292 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 454 transitions, 2906 flow [2022-11-18 19:59:20,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 19:59:20,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-18 19:59:20,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2195 transitions. [2022-11-18 19:59:20,299 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8638331365604093 [2022-11-18 19:59:20,299 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2195 transitions. [2022-11-18 19:59:20,299 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2195 transitions. [2022-11-18 19:59:20,301 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:59:20,302 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2195 transitions. [2022-11-18 19:59:20,318 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 199.54545454545453) internal successors, (2195), 11 states have internal predecessors, (2195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:59:20,332 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 231.0) internal successors, (2772), 12 states have internal predecessors, (2772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:59:20,334 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 231.0) internal successors, (2772), 12 states have internal predecessors, (2772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:59:20,334 INFO L175 Difference]: Start difference. First operand has 260 places, 277 transitions, 1251 flow. Second operand 11 states and 2195 transitions. [2022-11-18 19:59:20,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 454 transitions, 2906 flow [2022-11-18 19:59:21,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 454 transitions, 2857 flow, removed 14 selfloop flow, removed 2 redundant places. [2022-11-18 19:59:21,070 INFO L231 Difference]: Finished difference. Result has 275 places, 314 transitions, 1881 flow [2022-11-18 19:59:21,071 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=1220, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1881, PETRI_PLACES=275, PETRI_TRANSITIONS=314} [2022-11-18 19:59:21,071 INFO L288 CegarLoopForPetriNet]: 209 programPoint places, 66 predicate places. [2022-11-18 19:59:21,072 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 314 transitions, 1881 flow [2022-11-18 19:59:21,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 186.625) internal successors, (1493), 8 states have internal predecessors, (1493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:59:21,073 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:59:21,073 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:59:21,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-18 19:59:21,074 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-18 19:59:21,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:59:21,074 INFO L85 PathProgramCache]: Analyzing trace with hash -350271731, now seen corresponding path program 5 times [2022-11-18 19:59:21,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:59:21,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977821982] [2022-11-18 19:59:21,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:59:21,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:59:21,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:59:21,964 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:59:21,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:59:21,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977821982] [2022-11-18 19:59:21,964 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977821982] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:59:21,965 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:59:21,965 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 19:59:21,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562656712] [2022-11-18 19:59:21,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:59:21,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 19:59:21,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:59:21,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 19:59:21,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:59:21,971 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 231 [2022-11-18 19:59:21,973 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 314 transitions, 1881 flow. Second operand has 8 states, 8 states have (on average 186.625) internal successors, (1493), 8 states have internal predecessors, (1493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:59:21,973 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:59:21,974 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 231 [2022-11-18 19:59:21,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:59:31,223 INFO L130 PetriNetUnfolder]: 18161/36432 cut-off events. [2022-11-18 19:59:31,223 INFO L131 PetriNetUnfolder]: For 99530/99642 co-relation queries the response was YES. [2022-11-18 19:59:31,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113041 conditions, 36432 events. 18161/36432 cut-off events. For 99530/99642 co-relation queries the response was YES. Maximal size of possible extension queue 1714. Compared 362312 event pairs, 3488 based on Foata normal form. 390/35401 useless extension candidates. Maximal degree in co-relation 113001. Up to 8291 conditions per place. [2022-11-18 19:59:31,615 INFO L137 encePairwiseOnDemand]: 219/231 looper letters, 268 selfloop transitions, 112 changer transitions 6/553 dead transitions. [2022-11-18 19:59:31,616 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 553 transitions, 3979 flow [2022-11-18 19:59:31,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 19:59:31,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-18 19:59:31,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2980 transitions. [2022-11-18 19:59:31,627 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.86002886002886 [2022-11-18 19:59:31,627 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2980 transitions. [2022-11-18 19:59:31,627 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2980 transitions. [2022-11-18 19:59:31,629 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:59:31,630 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2980 transitions. [2022-11-18 19:59:31,635 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 198.66666666666666) internal successors, (2980), 15 states have internal predecessors, (2980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:59:31,643 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 231.0) internal successors, (3696), 16 states have internal predecessors, (3696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:59:31,645 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 231.0) internal successors, (3696), 16 states have internal predecessors, (3696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:59:31,645 INFO L175 Difference]: Start difference. First operand has 275 places, 314 transitions, 1881 flow. Second operand 15 states and 2980 transitions. [2022-11-18 19:59:31,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 553 transitions, 3979 flow [2022-11-18 19:59:33,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 553 transitions, 3942 flow, removed 11 selfloop flow, removed 1 redundant places. [2022-11-18 19:59:33,115 INFO L231 Difference]: Finished difference. Result has 297 places, 362 transitions, 2683 flow [2022-11-18 19:59:33,115 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=1772, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=2683, PETRI_PLACES=297, PETRI_TRANSITIONS=362} [2022-11-18 19:59:33,116 INFO L288 CegarLoopForPetriNet]: 209 programPoint places, 88 predicate places. [2022-11-18 19:59:33,116 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 362 transitions, 2683 flow [2022-11-18 19:59:33,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 186.625) internal successors, (1493), 8 states have internal predecessors, (1493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:59:33,123 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:59:33,123 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:59:33,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-18 19:59:33,124 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-18 19:59:33,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:59:33,125 INFO L85 PathProgramCache]: Analyzing trace with hash 1714473049, now seen corresponding path program 6 times [2022-11-18 19:59:33,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:59:33,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417580638] [2022-11-18 19:59:33,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:59:33,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:59:33,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:59:33,584 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:59:33,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:59:33,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417580638] [2022-11-18 19:59:33,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417580638] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:59:33,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1873700801] [2022-11-18 19:59:33,585 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-18 19:59:33,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:59:33,586 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4059741d-dd44-4562-9e66-154b54921c91/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:59:33,587 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4059741d-dd44-4562-9e66-154b54921c91/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:59:33,610 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4059741d-dd44-4562-9e66-154b54921c91/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 19:59:34,074 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-11-18 19:59:34,074 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:59:34,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 465 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-18 19:59:34,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:59:34,975 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:59:34,976 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:59:35,579 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:59:35,582 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1873700801] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-18 19:59:35,582 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:59:35,582 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [6, 9] total 20 [2022-11-18 19:59:35,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742768291] [2022-11-18 19:59:35,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:59:35,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 19:59:35,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:59:35,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 19:59:35,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2022-11-18 19:59:35,587 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 185 out of 231 [2022-11-18 19:59:35,590 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 362 transitions, 2683 flow. Second operand has 9 states, 9 states have (on average 188.0) internal successors, (1692), 9 states have internal predecessors, (1692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:59:35,590 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:59:35,590 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 185 of 231 [2022-11-18 19:59:35,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand