./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/chl-sre-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bb6e700-d8bd-4d76-b336-7a06edb8ca88/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bb6e700-d8bd-4d76-b336-7a06edb8ca88/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bb6e700-d8bd-4d76-b336-7a06edb8ca88/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bb6e700-d8bd-4d76-b336-7a06edb8ca88/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-sre-subst.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bb6e700-d8bd-4d76-b336-7a06edb8ca88/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bb6e700-d8bd-4d76-b336-7a06edb8ca88/bin/uautomizer-verify-uTZkv6EMXl --witnessprinter.witness.filename witness --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 3f15efb4f8a286b7a1ad39e3d0e5f0f11fbc70672e37c5d5b49fafb43ac86a5c --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:25:56,145 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:25:56,280 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bb6e700-d8bd-4d76-b336-7a06edb8ca88/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-12 02:25:56,287 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:25:56,288 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:25:56,330 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:25:56,332 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:25:56,332 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:25:56,334 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:25:56,338 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:25:56,340 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:25:56,341 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:25:56,341 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:25:56,343 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:25:56,343 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 02:25:56,344 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:25:56,344 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:25:56,345 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:25:56,345 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:25:56,345 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 02:25:56,346 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:25:56,346 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 02:25:56,347 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:25:56,347 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:25:56,348 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:25:56,348 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:25:56,349 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:25:56,349 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:25:56,350 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:25:56,350 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:25:56,352 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:25:56,352 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 02:25:56,352 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:25:56,353 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:25:56,353 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:25:56,353 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 02:25:56,353 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:25:56,354 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:25:56,354 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:25:56,354 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bb6e700-d8bd-4d76-b336-7a06edb8ca88/bin/uautomizer-verify-uTZkv6EMXl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bb6e700-d8bd-4d76-b336-7a06edb8ca88/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3f15efb4f8a286b7a1ad39e3d0e5f0f11fbc70672e37c5d5b49fafb43ac86a5c [2023-11-12 02:25:56,688 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:25:56,727 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:25:56,730 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:25:56,732 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:25:56,732 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:25:56,733 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bb6e700-d8bd-4d76-b336-7a06edb8ca88/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/weaver/chl-sre-subst.wvr.c [2023-11-12 02:25:59,868 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:26:00,173 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:26:00,174 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bb6e700-d8bd-4d76-b336-7a06edb8ca88/sv-benchmarks/c/weaver/chl-sre-subst.wvr.c [2023-11-12 02:26:00,183 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bb6e700-d8bd-4d76-b336-7a06edb8ca88/bin/uautomizer-verify-uTZkv6EMXl/data/6b1455035/b8b53a57ff614468936ae64c90404c38/FLAGb3241d5a5 [2023-11-12 02:26:00,197 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bb6e700-d8bd-4d76-b336-7a06edb8ca88/bin/uautomizer-verify-uTZkv6EMXl/data/6b1455035/b8b53a57ff614468936ae64c90404c38 [2023-11-12 02:26:00,200 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:26:00,201 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:26:00,203 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:26:00,203 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:26:00,208 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:26:00,209 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:26:00" (1/1) ... [2023-11-12 02:26:00,210 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@233aaf71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:26:00, skipping insertion in model container [2023-11-12 02:26:00,211 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:26:00" (1/1) ... [2023-11-12 02:26:00,234 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:26:00,420 WARN L240 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_2bb6e700-d8bd-4d76-b336-7a06edb8ca88/sv-benchmarks/c/weaver/chl-sre-subst.wvr.c[2372,2385] [2023-11-12 02:26:00,425 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:26:00,446 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:26:00,467 WARN L240 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_2bb6e700-d8bd-4d76-b336-7a06edb8ca88/sv-benchmarks/c/weaver/chl-sre-subst.wvr.c[2372,2385] [2023-11-12 02:26:00,469 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:26:00,486 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:26:00,486 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:26:00 WrapperNode [2023-11-12 02:26:00,486 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:26:00,488 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:26:00,488 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:26:00,488 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:26:00,497 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:26:00" (1/1) ... [2023-11-12 02:26:00,504 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:26:00" (1/1) ... [2023-11-12 02:26:00,528 INFO L138 Inliner]: procedures = 22, calls = 26, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 76 [2023-11-12 02:26:00,528 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:26:00,529 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:26:00,529 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:26:00,530 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:26:00,539 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:26:00" (1/1) ... [2023-11-12 02:26:00,539 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:26:00" (1/1) ... [2023-11-12 02:26:00,542 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:26:00" (1/1) ... [2023-11-12 02:26:00,542 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:26:00" (1/1) ... [2023-11-12 02:26:00,549 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:26:00" (1/1) ... [2023-11-12 02:26:00,551 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:26:00" (1/1) ... [2023-11-12 02:26:00,552 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:26:00" (1/1) ... [2023-11-12 02:26:00,553 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:26:00" (1/1) ... [2023-11-12 02:26:00,556 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:26:00,557 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:26:00,557 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:26:00,557 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:26:00,558 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:26:00" (1/1) ... [2023-11-12 02:26:00,566 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:26:00,582 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bb6e700-d8bd-4d76-b336-7a06edb8ca88/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:26:00,601 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bb6e700-d8bd-4d76-b336-7a06edb8ca88/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:26:00,639 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bb6e700-d8bd-4d76-b336-7a06edb8ca88/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:26:00,651 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:26:00,651 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-12 02:26:00,652 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-12 02:26:00,652 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-12 02:26:00,652 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-12 02:26:00,653 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-12 02:26:00,653 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-12 02:26:00,653 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:26:00,653 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 02:26:00,653 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 02:26:00,653 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:26:00,654 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:26:00,654 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 02:26:00,656 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 02:26:00,657 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-12 02:26:00,825 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:26:00,827 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:26:01,144 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:26:01,153 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:26:01,154 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-12 02:26:01,158 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:26:01 BoogieIcfgContainer [2023-11-12 02:26:01,158 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:26:01,163 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:26:01,163 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:26:01,167 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:26:01,169 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:26:00" (1/3) ... [2023-11-12 02:26:01,170 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3835d08e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:26:01, skipping insertion in model container [2023-11-12 02:26:01,171 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:26:00" (2/3) ... [2023-11-12 02:26:01,172 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3835d08e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:26:01, skipping insertion in model container [2023-11-12 02:26:01,173 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:26:01" (3/3) ... [2023-11-12 02:26:01,175 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-sre-subst.wvr.c [2023-11-12 02:26:01,193 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-12 02:26:01,205 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:26:01,205 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-12 02:26:01,206 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-12 02:26:01,293 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-12 02:26:01,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 104 places, 96 transitions, 213 flow [2023-11-12 02:26:01,403 INFO L124 PetriNetUnfolderBase]: 2/93 cut-off events. [2023-11-12 02:26:01,403 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-12 02:26:01,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106 conditions, 93 events. 2/93 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 28 event pairs, 0 based on Foata normal form. 0/90 useless extension candidates. Maximal degree in co-relation 45. Up to 2 conditions per place. [2023-11-12 02:26:01,408 INFO L82 GeneralOperation]: Start removeDead. Operand has 104 places, 96 transitions, 213 flow [2023-11-12 02:26:01,413 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 90 places, 82 transitions, 182 flow [2023-11-12 02:26:01,417 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-12 02:26:01,433 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 90 places, 82 transitions, 182 flow [2023-11-12 02:26:01,442 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 90 places, 82 transitions, 182 flow [2023-11-12 02:26:01,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 90 places, 82 transitions, 182 flow [2023-11-12 02:26:01,497 INFO L124 PetriNetUnfolderBase]: 2/82 cut-off events. [2023-11-12 02:26:01,497 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-12 02:26:01,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 82 events. 2/82 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 27 event pairs, 0 based on Foata normal form. 0/80 useless extension candidates. Maximal degree in co-relation 34. Up to 2 conditions per place. [2023-11-12 02:26:01,504 INFO L119 LiptonReduction]: Number of co-enabled transitions 384 [2023-11-12 02:26:04,527 INFO L134 LiptonReduction]: Checked pairs total: 464 [2023-11-12 02:26:04,528 INFO L136 LiptonReduction]: Total number of compositions: 75 [2023-11-12 02:26:04,543 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:26:04,550 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=LoopHeads, 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;@4b53907, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:26:04,550 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-12 02:26:04,557 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-12 02:26:04,557 INFO L124 PetriNetUnfolderBase]: 0/15 cut-off events. [2023-11-12 02:26:04,557 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-12 02:26:04,557 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:26:04,558 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:26:04,559 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-12 02:26:04,564 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:26:04,564 INFO L85 PathProgramCache]: Analyzing trace with hash 13500642, now seen corresponding path program 1 times [2023-11-12 02:26:04,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:26:04,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138651918] [2023-11-12 02:26:04,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:26:04,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:26:04,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:26:06,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:26:06,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:26:06,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138651918] [2023-11-12 02:26:06,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138651918] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:26:06,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:26:06,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:26:06,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775271689] [2023-11-12 02:26:06,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:26:06,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:26:06,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:26:06,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:26:06,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:26:06,805 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 171 [2023-11-12 02:26:06,809 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 16 transitions, 50 flow. Second operand has 5 states, 5 states have (on average 78.2) internal successors, (391), 5 states have internal predecessors, (391), 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) [2023-11-12 02:26:06,809 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:26:06,809 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 171 [2023-11-12 02:26:06,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:26:07,211 INFO L124 PetriNetUnfolderBase]: 38/100 cut-off events. [2023-11-12 02:26:07,212 INFO L125 PetriNetUnfolderBase]: For 28/28 co-relation queries the response was YES. [2023-11-12 02:26:07,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 233 conditions, 100 events. 38/100 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 282 event pairs, 2 based on Foata normal form. 1/101 useless extension candidates. Maximal degree in co-relation 169. Up to 38 conditions per place. [2023-11-12 02:26:07,215 INFO L140 encePairwiseOnDemand]: 166/171 looper letters, 32 selfloop transitions, 6 changer transitions 7/45 dead transitions. [2023-11-12 02:26:07,215 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 45 transitions, 228 flow [2023-11-12 02:26:07,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:26:07,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-12 02:26:07,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 496 transitions. [2023-11-12 02:26:07,239 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4834307992202729 [2023-11-12 02:26:07,240 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 496 transitions. [2023-11-12 02:26:07,241 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 496 transitions. [2023-11-12 02:26:07,243 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:26:07,246 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 496 transitions. [2023-11-12 02:26:07,251 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 82.66666666666667) internal successors, (496), 6 states have internal predecessors, (496), 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) [2023-11-12 02:26:07,258 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 171.0) internal successors, (1197), 7 states have internal predecessors, (1197), 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) [2023-11-12 02:26:07,259 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 171.0) internal successors, (1197), 7 states have internal predecessors, (1197), 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) [2023-11-12 02:26:07,261 INFO L175 Difference]: Start difference. First operand has 26 places, 16 transitions, 50 flow. Second operand 6 states and 496 transitions. [2023-11-12 02:26:07,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 45 transitions, 228 flow [2023-11-12 02:26:07,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 45 transitions, 196 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-12 02:26:07,268 INFO L231 Difference]: Finished difference. Result has 28 places, 20 transitions, 71 flow [2023-11-12 02:26:07,270 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=71, PETRI_PLACES=28, PETRI_TRANSITIONS=20} [2023-11-12 02:26:07,274 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 2 predicate places. [2023-11-12 02:26:07,275 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 20 transitions, 71 flow [2023-11-12 02:26:07,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 78.2) internal successors, (391), 5 states have internal predecessors, (391), 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) [2023-11-12 02:26:07,276 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:26:07,276 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:26:07,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 02:26:07,276 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-12 02:26:07,277 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:26:07,277 INFO L85 PathProgramCache]: Analyzing trace with hash -828902356, now seen corresponding path program 2 times [2023-11-12 02:26:07,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:26:07,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919500537] [2023-11-12 02:26:07,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:26:07,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:26:07,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:26:08,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:26:08,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:26:08,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919500537] [2023-11-12 02:26:08,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919500537] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:26:08,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:26:08,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:26:08,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302015292] [2023-11-12 02:26:08,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:26:08,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:26:08,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:26:08,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:26:08,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:26:08,498 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 171 [2023-11-12 02:26:08,499 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 20 transitions, 71 flow. Second operand has 5 states, 5 states have (on average 78.2) internal successors, (391), 5 states have internal predecessors, (391), 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) [2023-11-12 02:26:08,499 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:26:08,499 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 171 [2023-11-12 02:26:08,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:26:08,879 INFO L124 PetriNetUnfolderBase]: 38/116 cut-off events. [2023-11-12 02:26:08,879 INFO L125 PetriNetUnfolderBase]: For 55/55 co-relation queries the response was YES. [2023-11-12 02:26:08,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 324 conditions, 116 events. 38/116 cut-off events. For 55/55 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 413 event pairs, 6 based on Foata normal form. 1/117 useless extension candidates. Maximal degree in co-relation 309. Up to 58 conditions per place. [2023-11-12 02:26:08,882 INFO L140 encePairwiseOnDemand]: 166/171 looper letters, 30 selfloop transitions, 7 changer transitions 9/46 dead transitions. [2023-11-12 02:26:08,882 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 46 transitions, 235 flow [2023-11-12 02:26:08,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:26:08,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-12 02:26:08,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 496 transitions. [2023-11-12 02:26:08,886 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4834307992202729 [2023-11-12 02:26:08,886 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 496 transitions. [2023-11-12 02:26:08,886 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 496 transitions. [2023-11-12 02:26:08,887 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:26:08,887 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 496 transitions. [2023-11-12 02:26:08,889 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 82.66666666666667) internal successors, (496), 6 states have internal predecessors, (496), 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) [2023-11-12 02:26:08,893 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 171.0) internal successors, (1197), 7 states have internal predecessors, (1197), 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) [2023-11-12 02:26:08,894 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 171.0) internal successors, (1197), 7 states have internal predecessors, (1197), 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) [2023-11-12 02:26:08,894 INFO L175 Difference]: Start difference. First operand has 28 places, 20 transitions, 71 flow. Second operand 6 states and 496 transitions. [2023-11-12 02:26:08,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 46 transitions, 235 flow [2023-11-12 02:26:08,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 46 transitions, 231 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-11-12 02:26:08,897 INFO L231 Difference]: Finished difference. Result has 34 places, 21 transitions, 100 flow [2023-11-12 02:26:08,898 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=69, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=100, PETRI_PLACES=34, PETRI_TRANSITIONS=21} [2023-11-12 02:26:08,898 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 8 predicate places. [2023-11-12 02:26:08,899 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 21 transitions, 100 flow [2023-11-12 02:26:08,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 78.2) internal successors, (391), 5 states have internal predecessors, (391), 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) [2023-11-12 02:26:08,899 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:26:08,904 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:26:08,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 02:26:08,905 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-12 02:26:08,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:26:08,909 INFO L85 PathProgramCache]: Analyzing trace with hash -1716350502, now seen corresponding path program 3 times [2023-11-12 02:26:08,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:26:08,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042344742] [2023-11-12 02:26:08,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:26:08,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:26:08,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:26:10,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:26:10,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:26:10,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042344742] [2023-11-12 02:26:10,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042344742] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:26:10,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:26:10,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:26:10,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550457300] [2023-11-12 02:26:10,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:26:10,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:26:10,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:26:10,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:26:10,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:26:10,129 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 171 [2023-11-12 02:26:10,129 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 21 transitions, 100 flow. Second operand has 5 states, 5 states have (on average 78.2) internal successors, (391), 5 states have internal predecessors, (391), 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) [2023-11-12 02:26:10,130 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:26:10,130 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 171 [2023-11-12 02:26:10,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:26:10,414 INFO L124 PetriNetUnfolderBase]: 33/103 cut-off events. [2023-11-12 02:26:10,414 INFO L125 PetriNetUnfolderBase]: For 160/160 co-relation queries the response was YES. [2023-11-12 02:26:10,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 349 conditions, 103 events. 33/103 cut-off events. For 160/160 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 342 event pairs, 2 based on Foata normal form. 1/104 useless extension candidates. Maximal degree in co-relation 334. Up to 51 conditions per place. [2023-11-12 02:26:10,416 INFO L140 encePairwiseOnDemand]: 166/171 looper letters, 27 selfloop transitions, 6 changer transitions 11/44 dead transitions. [2023-11-12 02:26:10,416 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 44 transitions, 257 flow [2023-11-12 02:26:10,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:26:10,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-12 02:26:10,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 494 transitions. [2023-11-12 02:26:10,421 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48148148148148145 [2023-11-12 02:26:10,421 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 494 transitions. [2023-11-12 02:26:10,421 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 494 transitions. [2023-11-12 02:26:10,422 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:26:10,422 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 494 transitions. [2023-11-12 02:26:10,424 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 82.33333333333333) internal successors, (494), 6 states have internal predecessors, (494), 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) [2023-11-12 02:26:10,427 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 171.0) internal successors, (1197), 7 states have internal predecessors, (1197), 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) [2023-11-12 02:26:10,428 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 171.0) internal successors, (1197), 7 states have internal predecessors, (1197), 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) [2023-11-12 02:26:10,428 INFO L175 Difference]: Start difference. First operand has 34 places, 21 transitions, 100 flow. Second operand 6 states and 494 transitions. [2023-11-12 02:26:10,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 44 transitions, 257 flow [2023-11-12 02:26:10,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 44 transitions, 243 flow, removed 5 selfloop flow, removed 2 redundant places. [2023-11-12 02:26:10,434 INFO L231 Difference]: Finished difference. Result has 38 places, 20 transitions, 100 flow [2023-11-12 02:26:10,434 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=100, PETRI_PLACES=38, PETRI_TRANSITIONS=20} [2023-11-12 02:26:10,436 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 12 predicate places. [2023-11-12 02:26:10,439 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 20 transitions, 100 flow [2023-11-12 02:26:10,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 78.2) internal successors, (391), 5 states have internal predecessors, (391), 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) [2023-11-12 02:26:10,440 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:26:10,441 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:26:10,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 02:26:10,441 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-12 02:26:10,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:26:10,442 INFO L85 PathProgramCache]: Analyzing trace with hash -84199858, now seen corresponding path program 4 times [2023-11-12 02:26:10,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:26:10,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389531611] [2023-11-12 02:26:10,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:26:10,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:26:10,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:26:11,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:26:11,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:26:11,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389531611] [2023-11-12 02:26:11,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389531611] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:26:11,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:26:11,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:26:11,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803769306] [2023-11-12 02:26:11,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:26:11,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:26:11,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:26:11,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:26:11,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:26:11,585 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 171 [2023-11-12 02:26:11,586 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 20 transitions, 100 flow. Second operand has 5 states, 5 states have (on average 78.2) internal successors, (391), 5 states have internal predecessors, (391), 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) [2023-11-12 02:26:11,586 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:26:11,586 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 171 [2023-11-12 02:26:11,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:26:11,945 INFO L124 PetriNetUnfolderBase]: 17/59 cut-off events. [2023-11-12 02:26:11,945 INFO L125 PetriNetUnfolderBase]: For 94/94 co-relation queries the response was YES. [2023-11-12 02:26:11,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 219 conditions, 59 events. 17/59 cut-off events. For 94/94 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 132 event pairs, 0 based on Foata normal form. 1/60 useless extension candidates. Maximal degree in co-relation 205. Up to 20 conditions per place. [2023-11-12 02:26:11,946 INFO L140 encePairwiseOnDemand]: 166/171 looper letters, 18 selfloop transitions, 5 changer transitions 13/36 dead transitions. [2023-11-12 02:26:11,946 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 36 transitions, 219 flow [2023-11-12 02:26:11,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:26:11,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-12 02:26:11,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 486 transitions. [2023-11-12 02:26:11,953 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47368421052631576 [2023-11-12 02:26:11,953 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 486 transitions. [2023-11-12 02:26:11,953 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 486 transitions. [2023-11-12 02:26:11,954 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:26:11,954 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 486 transitions. [2023-11-12 02:26:11,956 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 81.0) internal successors, (486), 6 states have internal predecessors, (486), 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) [2023-11-12 02:26:11,960 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 171.0) internal successors, (1197), 7 states have internal predecessors, (1197), 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) [2023-11-12 02:26:11,960 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 171.0) internal successors, (1197), 7 states have internal predecessors, (1197), 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) [2023-11-12 02:26:11,961 INFO L175 Difference]: Start difference. First operand has 38 places, 20 transitions, 100 flow. Second operand 6 states and 486 transitions. [2023-11-12 02:26:11,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 36 transitions, 219 flow [2023-11-12 02:26:11,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 36 transitions, 202 flow, removed 3 selfloop flow, removed 5 redundant places. [2023-11-12 02:26:11,967 INFO L231 Difference]: Finished difference. Result has 37 places, 18 transitions, 81 flow [2023-11-12 02:26:11,967 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=85, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=81, PETRI_PLACES=37, PETRI_TRANSITIONS=18} [2023-11-12 02:26:11,969 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 11 predicate places. [2023-11-12 02:26:11,970 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 18 transitions, 81 flow [2023-11-12 02:26:11,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 78.2) internal successors, (391), 5 states have internal predecessors, (391), 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) [2023-11-12 02:26:11,970 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:26:11,970 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:26:11,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 02:26:11,971 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-12 02:26:11,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:26:11,972 INFO L85 PathProgramCache]: Analyzing trace with hash 1179876800, now seen corresponding path program 5 times [2023-11-12 02:26:11,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:26:11,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953017154] [2023-11-12 02:26:11,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:26:11,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:26:12,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:26:13,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:26:13,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:26:13,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953017154] [2023-11-12 02:26:13,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953017154] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:26:13,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:26:13,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:26:13,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211482783] [2023-11-12 02:26:13,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:26:13,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:26:13,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:26:13,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:26:13,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:26:13,107 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 171 [2023-11-12 02:26:13,108 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 18 transitions, 81 flow. Second operand has 5 states, 5 states have (on average 78.2) internal successors, (391), 5 states have internal predecessors, (391), 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) [2023-11-12 02:26:13,108 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:26:13,109 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 171 [2023-11-12 02:26:13,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:26:13,500 INFO L124 PetriNetUnfolderBase]: 8/40 cut-off events. [2023-11-12 02:26:13,500 INFO L125 PetriNetUnfolderBase]: For 42/42 co-relation queries the response was YES. [2023-11-12 02:26:13,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146 conditions, 40 events. 8/40 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 57 event pairs, 0 based on Foata normal form. 1/41 useless extension candidates. Maximal degree in co-relation 134. Up to 19 conditions per place. [2023-11-12 02:26:13,501 INFO L140 encePairwiseOnDemand]: 166/171 looper letters, 15 selfloop transitions, 3 changer transitions 12/30 dead transitions. [2023-11-12 02:26:13,501 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 30 transitions, 178 flow [2023-11-12 02:26:13,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:26:13,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-12 02:26:13,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 481 transitions. [2023-11-12 02:26:13,505 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46881091617933723 [2023-11-12 02:26:13,505 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 481 transitions. [2023-11-12 02:26:13,505 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 481 transitions. [2023-11-12 02:26:13,506 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:26:13,506 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 481 transitions. [2023-11-12 02:26:13,508 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 80.16666666666667) internal successors, (481), 6 states have internal predecessors, (481), 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) [2023-11-12 02:26:13,510 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 171.0) internal successors, (1197), 7 states have internal predecessors, (1197), 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) [2023-11-12 02:26:13,511 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 171.0) internal successors, (1197), 7 states have internal predecessors, (1197), 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) [2023-11-12 02:26:13,511 INFO L175 Difference]: Start difference. First operand has 37 places, 18 transitions, 81 flow. Second operand 6 states and 481 transitions. [2023-11-12 02:26:13,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 30 transitions, 178 flow [2023-11-12 02:26:13,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 30 transitions, 144 flow, removed 4 selfloop flow, removed 9 redundant places. [2023-11-12 02:26:13,514 INFO L231 Difference]: Finished difference. Result has 33 places, 16 transitions, 56 flow [2023-11-12 02:26:13,514 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=53, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=56, PETRI_PLACES=33, PETRI_TRANSITIONS=16} [2023-11-12 02:26:13,515 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 7 predicate places. [2023-11-12 02:26:13,515 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 16 transitions, 56 flow [2023-11-12 02:26:13,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 78.2) internal successors, (391), 5 states have internal predecessors, (391), 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) [2023-11-12 02:26:13,516 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:26:13,516 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:26:13,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 02:26:13,517 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 1 more)] === [2023-11-12 02:26:13,517 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:26:13,517 INFO L85 PathProgramCache]: Analyzing trace with hash -1054230694, now seen corresponding path program 6 times [2023-11-12 02:26:13,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:26:13,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891649904] [2023-11-12 02:26:13,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:26:13,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:26:13,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:26:14,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:26:14,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:26:14,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891649904] [2023-11-12 02:26:14,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891649904] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:26:14,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:26:14,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:26:14,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345191631] [2023-11-12 02:26:14,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:26:14,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:26:14,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:26:14,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:26:14,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:26:14,463 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 171 [2023-11-12 02:26:14,464 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 16 transitions, 56 flow. Second operand has 5 states, 5 states have (on average 78.2) internal successors, (391), 5 states have internal predecessors, (391), 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) [2023-11-12 02:26:14,464 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:26:14,464 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 171 [2023-11-12 02:26:14,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:26:14,713 INFO L124 PetriNetUnfolderBase]: 3/21 cut-off events. [2023-11-12 02:26:14,713 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-12 02:26:14,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 21 events. 3/21 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 11 event pairs, 0 based on Foata normal form. 1/22 useless extension candidates. Maximal degree in co-relation 62. Up to 8 conditions per place. [2023-11-12 02:26:14,714 INFO L140 encePairwiseOnDemand]: 166/171 looper letters, 0 selfloop transitions, 0 changer transitions 18/18 dead transitions. [2023-11-12 02:26:14,714 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 18 transitions, 94 flow [2023-11-12 02:26:14,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:26:14,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-12 02:26:14,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 469 transitions. [2023-11-12 02:26:14,717 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4571150097465887 [2023-11-12 02:26:14,717 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 469 transitions. [2023-11-12 02:26:14,717 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 469 transitions. [2023-11-12 02:26:14,718 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:26:14,718 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 469 transitions. [2023-11-12 02:26:14,720 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 78.16666666666667) internal successors, (469), 6 states have internal predecessors, (469), 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) [2023-11-12 02:26:14,722 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 171.0) internal successors, (1197), 7 states have internal predecessors, (1197), 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) [2023-11-12 02:26:14,723 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 171.0) internal successors, (1197), 7 states have internal predecessors, (1197), 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) [2023-11-12 02:26:14,723 INFO L175 Difference]: Start difference. First operand has 33 places, 16 transitions, 56 flow. Second operand 6 states and 469 transitions. [2023-11-12 02:26:14,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 18 transitions, 94 flow [2023-11-12 02:26:14,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 18 transitions, 82 flow, removed 1 selfloop flow, removed 6 redundant places. [2023-11-12 02:26:14,724 INFO L231 Difference]: Finished difference. Result has 29 places, 0 transitions, 0 flow [2023-11-12 02:26:14,724 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=29, PETRI_TRANSITIONS=0} [2023-11-12 02:26:14,725 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 3 predicate places. [2023-11-12 02:26:14,725 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 0 transitions, 0 flow [2023-11-12 02:26:14,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 78.2) internal successors, (391), 5 states have internal predecessors, (391), 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) [2023-11-12 02:26:14,728 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-11-12 02:26:14,729 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-11-12 02:26:14,729 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-11-12 02:26:14,730 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-11-12 02:26:14,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-12 02:26:14,730 INFO L445 BasicCegarLoop]: Path program histogram: [6] [2023-11-12 02:26:14,734 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-12 02:26:14,734 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-11-12 02:26:14,738 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 02:26:14 BasicIcfg [2023-11-12 02:26:14,738 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-12 02:26:14,739 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-12 02:26:14,739 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-12 02:26:14,739 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-12 02:26:14,740 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:26:01" (3/4) ... [2023-11-12 02:26:14,742 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-12 02:26:14,747 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-11-12 02:26:14,747 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-11-12 02:26:14,747 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2023-11-12 02:26:14,753 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2023-11-12 02:26:14,753 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-12 02:26:14,753 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-12 02:26:14,754 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-12 02:26:14,836 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bb6e700-d8bd-4d76-b336-7a06edb8ca88/bin/uautomizer-verify-uTZkv6EMXl/witness.graphml [2023-11-12 02:26:14,837 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bb6e700-d8bd-4d76-b336-7a06edb8ca88/bin/uautomizer-verify-uTZkv6EMXl/witness.yml [2023-11-12 02:26:14,837 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-12 02:26:14,838 INFO L158 Benchmark]: Toolchain (without parser) took 14636.30ms. Allocated memory was 188.7MB in the beginning and 327.2MB in the end (delta: 138.4MB). Free memory was 158.6MB in the beginning and 137.7MB in the end (delta: 20.9MB). Peak memory consumption was 162.4MB. Max. memory is 16.1GB. [2023-11-12 02:26:14,838 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 125.8MB. Free memory is still 86.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 02:26:14,838 INFO L158 Benchmark]: CACSL2BoogieTranslator took 284.40ms. Allocated memory is still 188.7MB. Free memory was 158.0MB in the beginning and 146.9MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-12 02:26:14,839 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.73ms. Allocated memory is still 188.7MB. Free memory was 146.9MB in the beginning and 144.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-12 02:26:14,839 INFO L158 Benchmark]: Boogie Preprocessor took 27.25ms. Allocated memory is still 188.7MB. Free memory was 144.8MB in the beginning and 143.8MB in the end (delta: 926.0kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 02:26:14,839 INFO L158 Benchmark]: RCFGBuilder took 601.25ms. Allocated memory is still 188.7MB. Free memory was 143.8MB in the beginning and 130.1MB in the end (delta: 13.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-12 02:26:14,840 INFO L158 Benchmark]: TraceAbstraction took 13575.57ms. Allocated memory was 188.7MB in the beginning and 327.2MB in the end (delta: 138.4MB). Free memory was 129.6MB in the beginning and 143.0MB in the end (delta: -13.4MB). Peak memory consumption was 126.7MB. Max. memory is 16.1GB. [2023-11-12 02:26:14,840 INFO L158 Benchmark]: Witness Printer took 98.00ms. Allocated memory is still 327.2MB. Free memory was 143.0MB in the beginning and 137.7MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-12 02:26:14,842 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 125.8MB. Free memory is still 86.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 284.40ms. Allocated memory is still 188.7MB. Free memory was 158.0MB in the beginning and 146.9MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 40.73ms. Allocated memory is still 188.7MB. Free memory was 146.9MB in the beginning and 144.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 27.25ms. Allocated memory is still 188.7MB. Free memory was 144.8MB in the beginning and 143.8MB in the end (delta: 926.0kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 601.25ms. Allocated memory is still 188.7MB. Free memory was 143.8MB in the beginning and 130.1MB in the end (delta: 13.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 13575.57ms. Allocated memory was 188.7MB in the beginning and 327.2MB in the end (delta: 138.4MB). Free memory was 129.6MB in the beginning and 143.0MB in the end (delta: -13.4MB). Peak memory consumption was 126.7MB. Max. memory is 16.1GB. * Witness Printer took 98.00ms. Allocated memory is still 327.2MB. Free memory was 143.0MB in the beginning and 137.7MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.1s, 90 PlacesBefore, 26 PlacesAfterwards, 82 TransitionsBefore, 16 TransitionsAfterwards, 384 CoEnabledTransitionPairs, 6 FixpointIterations, 44 TrivialSequentialCompositions, 21 ConcurrentSequentialCompositions, 8 TrivialYvCompositions, 0 ConcurrentYvCompositions, 2 ChoiceCompositions, 75 TotalNumberOfCompositions, 464 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 464, independent: 464, independent conditional: 0, independent unconditional: 464, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 219, independent: 219, independent conditional: 0, independent unconditional: 219, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 464, independent: 245, independent conditional: 0, independent unconditional: 245, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 219, unknown conditional: 0, unknown unconditional: 219] , Statistics on independence cache: Total cache size (in pairs): 18, Positive cache size: 18, Positive conditional cache size: 0, Positive unconditional cache size: 18, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 77]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 113 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 13.4s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 2.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 344 SdHoareTripleChecker+Valid, 1.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 264 mSDsluCounter, 94 SdHoareTripleChecker+Invalid, 1.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 79 mSDsCounter, 15 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 703 IncrementalHoareTripleChecker+Invalid, 718 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 15 mSolverCounterUnsat, 15 mSDtfsCounter, 703 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 48 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=100occurred in iteration=2, InterpolantAutomatonStates: 36, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 6.8s InterpolantComputationTime, 96 NumberOfCodeBlocks, 96 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 90 ConstructedInterpolants, 0 QuantifiedInterpolants, 2812 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-12 02:26:14,882 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bb6e700-d8bd-4d76-b336-7a06edb8ca88/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE