./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/chl-word-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff 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_d4f1fab6-bf80-4a30-b090-ad052c6df083/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f1fab6-bf80-4a30-b090-ad052c6df083/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f1fab6-bf80-4a30-b090-ad052c6df083/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f1fab6-bf80-4a30-b090-ad052c6df083/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-word-trans.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f1fab6-bf80-4a30-b090-ad052c6df083/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f1fab6-bf80-4a30-b090-ad052c6df083/bin/uautomizer-verify-uCwYo4JHxu --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 9cb2b0cbecf02e8cce2fd890595fb88c3204482a27ce7ac6f4ef6fb92949d747 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:35:15,136 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:35:15,214 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f1fab6-bf80-4a30-b090-ad052c6df083/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 07:35:15,219 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:35:15,220 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:35:15,247 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:35:15,247 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:35:15,248 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:35:15,249 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:35:15,249 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:35:15,250 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:35:15,251 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:35:15,251 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:35:15,252 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:35:15,253 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:35:15,253 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:35:15,254 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:35:15,254 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:35:15,255 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:35:15,255 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:35:15,256 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:35:15,256 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:35:15,257 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:35:15,257 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:35:15,258 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:35:15,258 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:35:15,259 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:35:15,259 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:35:15,259 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:35:15,260 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:35:15,260 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:35:15,261 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:35:15,261 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:35:15,262 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:35:15,262 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:35:15,262 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:35:15,263 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:35:15,263 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:35:15,264 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:35:15,268 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_d4f1fab6-bf80-4a30-b090-ad052c6df083/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f1fab6-bf80-4a30-b090-ad052c6df083/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9cb2b0cbecf02e8cce2fd890595fb88c3204482a27ce7ac6f4ef6fb92949d747 [2023-11-19 07:35:15,641 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:35:15,676 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:35:15,680 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:35:15,682 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:35:15,682 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:35:15,684 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f1fab6-bf80-4a30-b090-ad052c6df083/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/weaver/chl-word-trans.wvr.c [2023-11-19 07:35:18,877 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:35:19,102 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:35:19,102 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f1fab6-bf80-4a30-b090-ad052c6df083/sv-benchmarks/c/weaver/chl-word-trans.wvr.c [2023-11-19 07:35:19,111 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f1fab6-bf80-4a30-b090-ad052c6df083/bin/uautomizer-verify-uCwYo4JHxu/data/f95a92ef6/7526a83b65484db395d5df051cc72361/FLAG86a301ccc [2023-11-19 07:35:19,124 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f1fab6-bf80-4a30-b090-ad052c6df083/bin/uautomizer-verify-uCwYo4JHxu/data/f95a92ef6/7526a83b65484db395d5df051cc72361 [2023-11-19 07:35:19,126 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:35:19,128 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:35:19,129 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:35:19,130 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:35:19,135 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:35:19,136 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:35:19" (1/1) ... [2023-11-19 07:35:19,137 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@156f400 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:19, skipping insertion in model container [2023-11-19 07:35:19,137 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:35:19" (1/1) ... [2023-11-19 07:35:19,169 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:35:19,392 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_d4f1fab6-bf80-4a30-b090-ad052c6df083/sv-benchmarks/c/weaver/chl-word-trans.wvr.c[3331,3344] [2023-11-19 07:35:19,403 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:35:19,414 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:35:19,454 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_d4f1fab6-bf80-4a30-b090-ad052c6df083/sv-benchmarks/c/weaver/chl-word-trans.wvr.c[3331,3344] [2023-11-19 07:35:19,464 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:35:19,485 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:35:19,486 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:19 WrapperNode [2023-11-19 07:35:19,486 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:35:19,487 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:35:19,488 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:35:19,488 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:35:19,496 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:19" (1/1) ... [2023-11-19 07:35:19,511 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:19" (1/1) ... [2023-11-19 07:35:19,555 INFO L138 Inliner]: procedures = 25, calls = 44, calls flagged for inlining = 8, calls inlined = 12, statements flattened = 183 [2023-11-19 07:35:19,558 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:35:19,558 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:35:19,558 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:35:19,559 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:35:19,568 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:19" (1/1) ... [2023-11-19 07:35:19,568 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:19" (1/1) ... [2023-11-19 07:35:19,574 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:19" (1/1) ... [2023-11-19 07:35:19,574 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:19" (1/1) ... [2023-11-19 07:35:19,586 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:19" (1/1) ... [2023-11-19 07:35:19,605 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:19" (1/1) ... [2023-11-19 07:35:19,607 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:19" (1/1) ... [2023-11-19 07:35:19,609 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:19" (1/1) ... [2023-11-19 07:35:19,615 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:35:19,616 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:35:19,630 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:35:19,631 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:35:19,632 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:19" (1/1) ... [2023-11-19 07:35:19,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:35:19,661 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f1fab6-bf80-4a30-b090-ad052c6df083/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:35:19,678 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f1fab6-bf80-4a30-b090-ad052c6df083/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:35:19,709 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4f1fab6-bf80-4a30-b090-ad052c6df083/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:35:19,721 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:35:19,721 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:35:19,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:35:19,722 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:35:19,722 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-19 07:35:19,722 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-19 07:35:19,722 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-19 07:35:19,722 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-19 07:35:19,722 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-19 07:35:19,723 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-19 07:35:19,723 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:35:19,723 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 07:35:19,723 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:35:19,723 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:35:19,724 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:35:19,725 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 07:35:19,880 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:35:19,883 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:35:20,561 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:35:20,580 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:35:20,580 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-11-19 07:35:20,586 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:35:20 BoogieIcfgContainer [2023-11-19 07:35:20,586 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:35:20,593 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:35:20,594 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:35:20,597 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:35:20,598 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:35:19" (1/3) ... [2023-11-19 07:35:20,598 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@502b52bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:35:20, skipping insertion in model container [2023-11-19 07:35:20,599 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:19" (2/3) ... [2023-11-19 07:35:20,599 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@502b52bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:35:20, skipping insertion in model container [2023-11-19 07:35:20,600 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:35:20" (3/3) ... [2023-11-19 07:35:20,602 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-word-trans.wvr.c [2023-11-19 07:35:20,611 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 07:35:20,624 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:35:20,624 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 07:35:20,625 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:35:20,793 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-19 07:35:20,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 298 places, 316 transitions, 653 flow [2023-11-19 07:35:21,036 INFO L124 PetriNetUnfolderBase]: 28/313 cut-off events. [2023-11-19 07:35:21,037 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-19 07:35:21,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 326 conditions, 313 events. 28/313 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 402 event pairs, 0 based on Foata normal form. 0/284 useless extension candidates. Maximal degree in co-relation 253. Up to 3 conditions per place. [2023-11-19 07:35:21,050 INFO L82 GeneralOperation]: Start removeDead. Operand has 298 places, 316 transitions, 653 flow [2023-11-19 07:35:21,065 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 284 places, 302 transitions, 622 flow [2023-11-19 07:35:21,069 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:35:21,091 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 284 places, 302 transitions, 622 flow [2023-11-19 07:35:21,096 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 284 places, 302 transitions, 622 flow [2023-11-19 07:35:21,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 284 places, 302 transitions, 622 flow [2023-11-19 07:35:21,219 INFO L124 PetriNetUnfolderBase]: 28/302 cut-off events. [2023-11-19 07:35:21,219 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-19 07:35:21,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 315 conditions, 302 events. 28/302 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 403 event pairs, 0 based on Foata normal form. 0/274 useless extension candidates. Maximal degree in co-relation 253. Up to 3 conditions per place. [2023-11-19 07:35:21,233 INFO L119 LiptonReduction]: Number of co-enabled transitions 8448 [2023-11-19 07:35:32,398 INFO L134 LiptonReduction]: Checked pairs total: 11283 [2023-11-19 07:35:32,399 INFO L136 LiptonReduction]: Total number of compositions: 326 [2023-11-19 07:35:32,415 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:35:32,422 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;@4fea51a5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:35:32,422 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-19 07:35:32,434 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:35:32,434 INFO L124 PetriNetUnfolderBase]: 11/38 cut-off events. [2023-11-19 07:35:32,434 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-19 07:35:32,435 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:35:32,435 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:35:32,436 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)] === [2023-11-19 07:35:32,441 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:35:32,441 INFO L85 PathProgramCache]: Analyzing trace with hash 1653731907, now seen corresponding path program 1 times [2023-11-19 07:35:32,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:35:32,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712568097] [2023-11-19 07:35:32,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:35:32,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:35:32,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:35:33,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:35:33,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:35:33,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712568097] [2023-11-19 07:35:33,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712568097] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:35:33,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:35:33,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:35:33,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720340305] [2023-11-19 07:35:33,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:35:33,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:35:33,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:35:33,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:35:33,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:35:33,556 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 276 out of 642 [2023-11-19 07:35:33,563 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 39 transitions, 96 flow. Second operand has 5 states, 5 states have (on average 279.8) internal successors, (1399), 5 states have internal predecessors, (1399), 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) [2023-11-19 07:35:33,563 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:35:33,563 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 276 of 642 [2023-11-19 07:35:33,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:35:34,084 INFO L124 PetriNetUnfolderBase]: 1057/1496 cut-off events. [2023-11-19 07:35:34,084 INFO L125 PetriNetUnfolderBase]: For 96/96 co-relation queries the response was YES. [2023-11-19 07:35:34,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3075 conditions, 1496 events. 1057/1496 cut-off events. For 96/96 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 5510 event pairs, 481 based on Foata normal form. 1/988 useless extension candidates. Maximal degree in co-relation 2604. Up to 1157 conditions per place. [2023-11-19 07:35:34,098 INFO L140 encePairwiseOnDemand]: 636/642 looper letters, 74 selfloop transitions, 4 changer transitions 2/81 dead transitions. [2023-11-19 07:35:34,098 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 81 transitions, 373 flow [2023-11-19 07:35:34,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:35:34,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:35:34,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1461 transitions. [2023-11-19 07:35:34,129 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45514018691588787 [2023-11-19 07:35:34,130 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1461 transitions. [2023-11-19 07:35:34,130 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1461 transitions. [2023-11-19 07:35:34,135 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:35:34,138 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1461 transitions. [2023-11-19 07:35:34,148 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 292.2) internal successors, (1461), 5 states have internal predecessors, (1461), 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) [2023-11-19 07:35:34,161 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 642.0) internal successors, (3852), 6 states have internal predecessors, (3852), 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) [2023-11-19 07:35:34,165 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 642.0) internal successors, (3852), 6 states have internal predecessors, (3852), 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) [2023-11-19 07:35:34,167 INFO L175 Difference]: Start difference. First operand has 38 places, 39 transitions, 96 flow. Second operand 5 states and 1461 transitions. [2023-11-19 07:35:34,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 81 transitions, 373 flow [2023-11-19 07:35:34,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 81 transitions, 339 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-19 07:35:34,180 INFO L231 Difference]: Finished difference. Result has 39 places, 42 transitions, 115 flow [2023-11-19 07:35:34,182 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=642, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=115, PETRI_PLACES=39, PETRI_TRANSITIONS=42} [2023-11-19 07:35:34,187 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 1 predicate places. [2023-11-19 07:35:34,188 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 42 transitions, 115 flow [2023-11-19 07:35:34,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 279.8) internal successors, (1399), 5 states have internal predecessors, (1399), 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) [2023-11-19 07:35:34,190 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:35:34,190 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:35:34,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:35:34,191 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)] === [2023-11-19 07:35:34,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:35:34,202 INFO L85 PathProgramCache]: Analyzing trace with hash -698993871, now seen corresponding path program 2 times [2023-11-19 07:35:34,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:35:34,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461562584] [2023-11-19 07:35:34,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:35:34,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:35:34,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:35:34,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:35:34,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:35:34,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461562584] [2023-11-19 07:35:34,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461562584] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:35:34,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:35:34,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:35:34,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057548444] [2023-11-19 07:35:34,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:35:34,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:35:34,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:35:34,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:35:34,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:35:34,584 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 642 [2023-11-19 07:35:34,586 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 42 transitions, 115 flow. Second operand has 5 states, 5 states have (on average 278.8) internal successors, (1394), 5 states have internal predecessors, (1394), 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) [2023-11-19 07:35:34,587 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:35:34,587 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 642 [2023-11-19 07:35:34,587 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:35:35,136 INFO L124 PetriNetUnfolderBase]: 1412/2051 cut-off events. [2023-11-19 07:35:35,136 INFO L125 PetriNetUnfolderBase]: For 524/524 co-relation queries the response was YES. [2023-11-19 07:35:35,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4668 conditions, 2051 events. 1412/2051 cut-off events. For 524/524 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 8578 event pairs, 595 based on Foata normal form. 1/1665 useless extension candidates. Maximal degree in co-relation 4067. Up to 1333 conditions per place. [2023-11-19 07:35:35,152 INFO L140 encePairwiseOnDemand]: 633/642 looper letters, 79 selfloop transitions, 12 changer transitions 1/93 dead transitions. [2023-11-19 07:35:35,153 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 93 transitions, 432 flow [2023-11-19 07:35:35,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:35:35,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:35:35,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1465 transitions. [2023-11-19 07:35:35,160 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45638629283489096 [2023-11-19 07:35:35,160 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1465 transitions. [2023-11-19 07:35:35,160 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1465 transitions. [2023-11-19 07:35:35,161 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:35:35,161 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1465 transitions. [2023-11-19 07:35:35,166 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 293.0) internal successors, (1465), 5 states have internal predecessors, (1465), 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) [2023-11-19 07:35:35,174 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 642.0) internal successors, (3852), 6 states have internal predecessors, (3852), 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) [2023-11-19 07:35:35,177 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 642.0) internal successors, (3852), 6 states have internal predecessors, (3852), 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) [2023-11-19 07:35:35,177 INFO L175 Difference]: Start difference. First operand has 39 places, 42 transitions, 115 flow. Second operand 5 states and 1465 transitions. [2023-11-19 07:35:35,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 93 transitions, 432 flow [2023-11-19 07:35:35,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 93 transitions, 423 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-11-19 07:35:35,186 INFO L231 Difference]: Finished difference. Result has 45 places, 50 transitions, 202 flow [2023-11-19 07:35:35,186 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=642, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=202, PETRI_PLACES=45, PETRI_TRANSITIONS=50} [2023-11-19 07:35:35,187 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 7 predicate places. [2023-11-19 07:35:35,187 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 50 transitions, 202 flow [2023-11-19 07:35:35,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 278.8) internal successors, (1394), 5 states have internal predecessors, (1394), 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) [2023-11-19 07:35:35,188 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:35:35,189 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:35:35,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:35:35,189 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)] === [2023-11-19 07:35:35,190 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:35:35,190 INFO L85 PathProgramCache]: Analyzing trace with hash 383624657, now seen corresponding path program 3 times [2023-11-19 07:35:35,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:35:35,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864646462] [2023-11-19 07:35:35,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:35:35,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:35:35,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:35:35,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:35:35,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:35:35,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864646462] [2023-11-19 07:35:35,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864646462] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:35:35,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:35:35,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:35:35,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227063172] [2023-11-19 07:35:35,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:35:35,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:35:35,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:35:35,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:35:35,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:35:35,465 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 276 out of 642 [2023-11-19 07:35:35,467 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 50 transitions, 202 flow. Second operand has 5 states, 5 states have (on average 279.8) internal successors, (1399), 5 states have internal predecessors, (1399), 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) [2023-11-19 07:35:35,467 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:35:35,467 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 276 of 642 [2023-11-19 07:35:35,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:35:36,042 INFO L124 PetriNetUnfolderBase]: 1649/2424 cut-off events. [2023-11-19 07:35:36,042 INFO L125 PetriNetUnfolderBase]: For 1925/1925 co-relation queries the response was YES. [2023-11-19 07:35:36,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6658 conditions, 2424 events. 1649/2424 cut-off events. For 1925/1925 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 10872 event pairs, 481 based on Foata normal form. 1/2058 useless extension candidates. Maximal degree in co-relation 4912. Up to 1117 conditions per place. [2023-11-19 07:35:36,062 INFO L140 encePairwiseOnDemand]: 633/642 looper letters, 83 selfloop transitions, 17 changer transitions 1/102 dead transitions. [2023-11-19 07:35:36,063 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 102 transitions, 569 flow [2023-11-19 07:35:36,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:35:36,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:35:36,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1470 transitions. [2023-11-19 07:35:36,069 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45794392523364486 [2023-11-19 07:35:36,069 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1470 transitions. [2023-11-19 07:35:36,069 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1470 transitions. [2023-11-19 07:35:36,071 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:35:36,071 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1470 transitions. [2023-11-19 07:35:36,076 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 294.0) internal successors, (1470), 5 states have internal predecessors, (1470), 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) [2023-11-19 07:35:36,084 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 642.0) internal successors, (3852), 6 states have internal predecessors, (3852), 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) [2023-11-19 07:35:36,088 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 642.0) internal successors, (3852), 6 states have internal predecessors, (3852), 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) [2023-11-19 07:35:36,088 INFO L175 Difference]: Start difference. First operand has 45 places, 50 transitions, 202 flow. Second operand 5 states and 1470 transitions. [2023-11-19 07:35:36,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 102 transitions, 569 flow [2023-11-19 07:35:36,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 102 transitions, 559 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-11-19 07:35:36,103 INFO L231 Difference]: Finished difference. Result has 51 places, 58 transitions, 313 flow [2023-11-19 07:35:36,103 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=642, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=313, PETRI_PLACES=51, PETRI_TRANSITIONS=58} [2023-11-19 07:35:36,104 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 13 predicate places. [2023-11-19 07:35:36,104 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 58 transitions, 313 flow [2023-11-19 07:35:36,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 279.8) internal successors, (1399), 5 states have internal predecessors, (1399), 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) [2023-11-19 07:35:36,106 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:35:36,106 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:35:36,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:35:36,107 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)] === [2023-11-19 07:35:36,107 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:35:36,108 INFO L85 PathProgramCache]: Analyzing trace with hash -2015000053, now seen corresponding path program 4 times [2023-11-19 07:35:36,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:35:36,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847954869] [2023-11-19 07:35:36,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:35:36,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:35:36,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:35:36,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:35:36,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:35:36,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847954869] [2023-11-19 07:35:36,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847954869] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:35:36,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:35:36,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:35:36,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811198621] [2023-11-19 07:35:36,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:35:36,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:35:36,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:35:36,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:35:36,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:35:36,391 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 276 out of 642 [2023-11-19 07:35:36,393 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 58 transitions, 313 flow. Second operand has 5 states, 5 states have (on average 279.8) internal successors, (1399), 5 states have internal predecessors, (1399), 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) [2023-11-19 07:35:36,394 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:35:36,394 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 276 of 642 [2023-11-19 07:35:36,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:35:36,974 INFO L124 PetriNetUnfolderBase]: 1649/2416 cut-off events. [2023-11-19 07:35:36,974 INFO L125 PetriNetUnfolderBase]: For 3551/3551 co-relation queries the response was YES. [2023-11-19 07:35:36,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7571 conditions, 2416 events. 1649/2416 cut-off events. For 3551/3551 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 10507 event pairs, 823 based on Foata normal form. 1/2046 useless extension candidates. Maximal degree in co-relation 6084. Up to 1571 conditions per place. [2023-11-19 07:35:36,998 INFO L140 encePairwiseOnDemand]: 636/642 looper letters, 87 selfloop transitions, 9 changer transitions 2/99 dead transitions. [2023-11-19 07:35:36,998 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 99 transitions, 672 flow [2023-11-19 07:35:36,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:35:36,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:35:37,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1462 transitions. [2023-11-19 07:35:37,004 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4554517133956386 [2023-11-19 07:35:37,005 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1462 transitions. [2023-11-19 07:35:37,005 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1462 transitions. [2023-11-19 07:35:37,006 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:35:37,006 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1462 transitions. [2023-11-19 07:35:37,011 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 292.4) internal successors, (1462), 5 states have internal predecessors, (1462), 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) [2023-11-19 07:35:37,019 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 642.0) internal successors, (3852), 6 states have internal predecessors, (3852), 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) [2023-11-19 07:35:37,023 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 642.0) internal successors, (3852), 6 states have internal predecessors, (3852), 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) [2023-11-19 07:35:37,023 INFO L175 Difference]: Start difference. First operand has 51 places, 58 transitions, 313 flow. Second operand 5 states and 1462 transitions. [2023-11-19 07:35:37,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 99 transitions, 672 flow [2023-11-19 07:35:37,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 99 transitions, 630 flow, removed 13 selfloop flow, removed 1 redundant places. [2023-11-19 07:35:37,096 INFO L231 Difference]: Finished difference. Result has 57 places, 61 transitions, 352 flow [2023-11-19 07:35:37,096 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=642, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=352, PETRI_PLACES=57, PETRI_TRANSITIONS=61} [2023-11-19 07:35:37,097 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 19 predicate places. [2023-11-19 07:35:37,098 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 61 transitions, 352 flow [2023-11-19 07:35:37,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 279.8) internal successors, (1399), 5 states have internal predecessors, (1399), 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) [2023-11-19 07:35:37,099 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:35:37,099 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:35:37,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:35:37,100 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)] === [2023-11-19 07:35:37,100 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:35:37,100 INFO L85 PathProgramCache]: Analyzing trace with hash 626642017, now seen corresponding path program 5 times [2023-11-19 07:35:37,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:35:37,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907363950] [2023-11-19 07:35:37,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:35:37,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:35:37,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:35:37,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:35:37,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:35:37,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907363950] [2023-11-19 07:35:37,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907363950] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:35:37,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:35:37,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:35:37,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797504768] [2023-11-19 07:35:37,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:35:37,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:35:37,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:35:37,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:35:37,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:35:37,463 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 642 [2023-11-19 07:35:37,465 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 61 transitions, 352 flow. Second operand has 5 states, 5 states have (on average 278.8) internal successors, (1394), 5 states have internal predecessors, (1394), 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) [2023-11-19 07:35:37,465 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:35:37,466 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 642 [2023-11-19 07:35:37,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:35:38,106 INFO L124 PetriNetUnfolderBase]: 1738/2564 cut-off events. [2023-11-19 07:35:38,107 INFO L125 PetriNetUnfolderBase]: For 3879/3879 co-relation queries the response was YES. [2023-11-19 07:35:38,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7820 conditions, 2564 events. 1738/2564 cut-off events. For 3879/3879 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 11625 event pairs, 819 based on Foata normal form. 1/2181 useless extension candidates. Maximal degree in co-relation 7497. Up to 1937 conditions per place. [2023-11-19 07:35:38,131 INFO L140 encePairwiseOnDemand]: 633/642 looper letters, 97 selfloop transitions, 17 changer transitions 1/116 dead transitions. [2023-11-19 07:35:38,131 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 116 transitions, 769 flow [2023-11-19 07:35:38,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:35:38,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:35:38,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1466 transitions. [2023-11-19 07:35:38,138 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45669781931464176 [2023-11-19 07:35:38,138 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1466 transitions. [2023-11-19 07:35:38,138 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1466 transitions. [2023-11-19 07:35:38,139 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:35:38,140 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1466 transitions. [2023-11-19 07:35:38,144 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 293.2) internal successors, (1466), 5 states have internal predecessors, (1466), 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) [2023-11-19 07:35:38,151 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 642.0) internal successors, (3852), 6 states have internal predecessors, (3852), 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) [2023-11-19 07:35:38,153 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 642.0) internal successors, (3852), 6 states have internal predecessors, (3852), 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) [2023-11-19 07:35:38,153 INFO L175 Difference]: Start difference. First operand has 57 places, 61 transitions, 352 flow. Second operand 5 states and 1466 transitions. [2023-11-19 07:35:38,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 116 transitions, 769 flow [2023-11-19 07:35:38,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 116 transitions, 754 flow, removed 5 selfloop flow, removed 1 redundant places. [2023-11-19 07:35:38,177 INFO L231 Difference]: Finished difference. Result has 63 places, 70 transitions, 480 flow [2023-11-19 07:35:38,178 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=642, PETRI_DIFFERENCE_MINUEND_FLOW=342, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=480, PETRI_PLACES=63, PETRI_TRANSITIONS=70} [2023-11-19 07:35:38,179 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 25 predicate places. [2023-11-19 07:35:38,179 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 70 transitions, 480 flow [2023-11-19 07:35:38,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 278.8) internal successors, (1394), 5 states have internal predecessors, (1394), 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) [2023-11-19 07:35:38,180 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:35:38,180 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:35:38,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 07:35:38,181 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)] === [2023-11-19 07:35:38,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:35:38,182 INFO L85 PathProgramCache]: Analyzing trace with hash 1648231003, now seen corresponding path program 6 times [2023-11-19 07:35:38,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:35:38,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017476490] [2023-11-19 07:35:38,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:35:38,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:35:38,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:35:38,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:35:38,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:35:38,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017476490] [2023-11-19 07:35:38,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017476490] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:35:38,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:35:38,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:35:38,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138541423] [2023-11-19 07:35:38,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:35:38,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:35:38,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:35:38,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:35:38,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:35:38,506 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 276 out of 642 [2023-11-19 07:35:38,508 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 70 transitions, 480 flow. Second operand has 5 states, 5 states have (on average 279.8) internal successors, (1399), 5 states have internal predecessors, (1399), 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) [2023-11-19 07:35:38,508 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:35:38,508 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 276 of 642 [2023-11-19 07:35:38,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:35:39,163 INFO L124 PetriNetUnfolderBase]: 1770/2613 cut-off events. [2023-11-19 07:35:39,163 INFO L125 PetriNetUnfolderBase]: For 5568/5568 co-relation queries the response was YES. [2023-11-19 07:35:39,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8796 conditions, 2613 events. 1770/2613 cut-off events. For 5568/5568 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 11941 event pairs, 477 based on Foata normal form. 1/2303 useless extension candidates. Maximal degree in co-relation 8494. Up to 1219 conditions per place. [2023-11-19 07:35:39,192 INFO L140 encePairwiseOnDemand]: 633/642 looper letters, 92 selfloop transitions, 30 changer transitions 1/124 dead transitions. [2023-11-19 07:35:39,192 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 124 transitions, 928 flow [2023-11-19 07:35:39,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:35:39,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:35:39,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1472 transitions. [2023-11-19 07:35:39,199 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4585669781931464 [2023-11-19 07:35:39,199 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1472 transitions. [2023-11-19 07:35:39,199 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1472 transitions. [2023-11-19 07:35:39,200 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:35:39,201 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1472 transitions. [2023-11-19 07:35:39,204 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 294.4) internal successors, (1472), 5 states have internal predecessors, (1472), 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) [2023-11-19 07:35:39,211 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 642.0) internal successors, (3852), 6 states have internal predecessors, (3852), 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) [2023-11-19 07:35:39,214 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 642.0) internal successors, (3852), 6 states have internal predecessors, (3852), 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) [2023-11-19 07:35:39,215 INFO L175 Difference]: Start difference. First operand has 63 places, 70 transitions, 480 flow. Second operand 5 states and 1472 transitions. [2023-11-19 07:35:39,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 124 transitions, 928 flow [2023-11-19 07:35:39,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 124 transitions, 917 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-11-19 07:35:39,248 INFO L231 Difference]: Finished difference. Result has 69 places, 79 transitions, 645 flow [2023-11-19 07:35:39,249 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=642, PETRI_DIFFERENCE_MINUEND_FLOW=470, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=645, PETRI_PLACES=69, PETRI_TRANSITIONS=79} [2023-11-19 07:35:39,251 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 31 predicate places. [2023-11-19 07:35:39,251 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 79 transitions, 645 flow [2023-11-19 07:35:39,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 279.8) internal successors, (1399), 5 states have internal predecessors, (1399), 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) [2023-11-19 07:35:39,253 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:35:39,253 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:35:39,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 07:35:39,254 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 1 more)] === [2023-11-19 07:35:39,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:35:39,254 INFO L85 PathProgramCache]: Analyzing trace with hash -1132326818, now seen corresponding path program 1 times [2023-11-19 07:35:39,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:35:39,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076277608] [2023-11-19 07:35:39,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:35:39,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:35:39,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:35:39,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:35:39,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:35:39,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076277608] [2023-11-19 07:35:39,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076277608] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:35:39,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:35:39,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:35:39,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287853228] [2023-11-19 07:35:39,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:35:39,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:35:39,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:35:39,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:35:39,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:35:39,572 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 279 out of 642 [2023-11-19 07:35:39,574 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 79 transitions, 645 flow. Second operand has 5 states, 5 states have (on average 283.0) internal successors, (1415), 5 states have internal predecessors, (1415), 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) [2023-11-19 07:35:39,574 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:35:39,574 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 279 of 642 [2023-11-19 07:35:39,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:35:40,319 INFO L124 PetriNetUnfolderBase]: 1936/2899 cut-off events. [2023-11-19 07:35:40,319 INFO L125 PetriNetUnfolderBase]: For 8791/8791 co-relation queries the response was YES. [2023-11-19 07:35:40,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10882 conditions, 2899 events. 1936/2899 cut-off events. For 8791/8791 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 13986 event pairs, 815 based on Foata normal form. 1/2549 useless extension candidates. Maximal degree in co-relation 10299. Up to 1749 conditions per place. [2023-11-19 07:35:40,351 INFO L140 encePairwiseOnDemand]: 636/642 looper letters, 116 selfloop transitions, 10 changer transitions 2/129 dead transitions. [2023-11-19 07:35:40,351 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 129 transitions, 1118 flow [2023-11-19 07:35:40,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:35:40,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:35:40,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1487 transitions. [2023-11-19 07:35:40,357 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4632398753894081 [2023-11-19 07:35:40,358 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1487 transitions. [2023-11-19 07:35:40,358 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1487 transitions. [2023-11-19 07:35:40,359 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:35:40,360 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1487 transitions. [2023-11-19 07:35:40,364 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 297.4) internal successors, (1487), 5 states have internal predecessors, (1487), 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) [2023-11-19 07:35:40,370 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 642.0) internal successors, (3852), 6 states have internal predecessors, (3852), 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) [2023-11-19 07:35:40,373 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 642.0) internal successors, (3852), 6 states have internal predecessors, (3852), 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) [2023-11-19 07:35:40,373 INFO L175 Difference]: Start difference. First operand has 69 places, 79 transitions, 645 flow. Second operand 5 states and 1487 transitions. [2023-11-19 07:35:40,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 129 transitions, 1118 flow [2023-11-19 07:35:40,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 129 transitions, 1066 flow, removed 12 selfloop flow, removed 1 redundant places. [2023-11-19 07:35:40,437 INFO L231 Difference]: Finished difference. Result has 75 places, 82 transitions, 677 flow [2023-11-19 07:35:40,439 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=642, PETRI_DIFFERENCE_MINUEND_FLOW=598, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=677, PETRI_PLACES=75, PETRI_TRANSITIONS=82} [2023-11-19 07:35:40,440 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 37 predicate places. [2023-11-19 07:35:40,440 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 82 transitions, 677 flow [2023-11-19 07:35:40,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 283.0) internal successors, (1415), 5 states have internal predecessors, (1415), 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) [2023-11-19 07:35:40,442 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:35:40,443 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:35:40,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 07:35:40,443 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 1 more)] === [2023-11-19 07:35:40,444 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:35:40,444 INFO L85 PathProgramCache]: Analyzing trace with hash -1551858928, now seen corresponding path program 2 times [2023-11-19 07:35:40,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:35:40,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973773775] [2023-11-19 07:35:40,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:35:40,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:35:40,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:35:40,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:35:40,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:35:40,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973773775] [2023-11-19 07:35:40,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973773775] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:35:40,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:35:40,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:35:40,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713207538] [2023-11-19 07:35:40,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:35:40,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:35:40,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:35:40,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:35:40,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:35:40,889 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 273 out of 642 [2023-11-19 07:35:40,891 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 82 transitions, 677 flow. Second operand has 6 states, 6 states have (on average 276.3333333333333) internal successors, (1658), 6 states have internal predecessors, (1658), 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) [2023-11-19 07:35:40,892 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:35:40,892 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 273 of 642 [2023-11-19 07:35:40,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:35:41,943 INFO L124 PetriNetUnfolderBase]: 3497/5187 cut-off events. [2023-11-19 07:35:41,943 INFO L125 PetriNetUnfolderBase]: For 19347/19373 co-relation queries the response was YES. [2023-11-19 07:35:41,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19289 conditions, 5187 events. 3497/5187 cut-off events. For 19347/19373 co-relation queries the response was YES. Maximal size of possible extension queue 285. Compared 26830 event pairs, 1399 based on Foata normal form. 8/4591 useless extension candidates. Maximal degree in co-relation 18221. Up to 1553 conditions per place. [2023-11-19 07:35:41,979 INFO L140 encePairwiseOnDemand]: 632/642 looper letters, 130 selfloop transitions, 25 changer transitions 30/186 dead transitions. [2023-11-19 07:35:41,979 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 186 transitions, 1839 flow [2023-11-19 07:35:41,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:35:41,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 07:35:41,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2020 transitions. [2023-11-19 07:35:41,986 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4494882064975523 [2023-11-19 07:35:41,987 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2020 transitions. [2023-11-19 07:35:41,987 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2020 transitions. [2023-11-19 07:35:41,988 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:35:41,988 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2020 transitions. [2023-11-19 07:35:42,020 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 288.57142857142856) internal successors, (2020), 7 states have internal predecessors, (2020), 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) [2023-11-19 07:35:42,029 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 642.0) internal successors, (5136), 8 states have internal predecessors, (5136), 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) [2023-11-19 07:35:42,031 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 642.0) internal successors, (5136), 8 states have internal predecessors, (5136), 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) [2023-11-19 07:35:42,031 INFO L175 Difference]: Start difference. First operand has 75 places, 82 transitions, 677 flow. Second operand 7 states and 2020 transitions. [2023-11-19 07:35:42,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 186 transitions, 1839 flow [2023-11-19 07:35:42,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 186 transitions, 1794 flow, removed 17 selfloop flow, removed 1 redundant places. [2023-11-19 07:35:42,188 INFO L231 Difference]: Finished difference. Result has 83 places, 94 transitions, 834 flow [2023-11-19 07:35:42,188 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=642, PETRI_DIFFERENCE_MINUEND_FLOW=662, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=834, PETRI_PLACES=83, PETRI_TRANSITIONS=94} [2023-11-19 07:35:42,191 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 45 predicate places. [2023-11-19 07:35:42,192 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 94 transitions, 834 flow [2023-11-19 07:35:42,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 276.3333333333333) internal successors, (1658), 6 states have internal predecessors, (1658), 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) [2023-11-19 07:35:42,192 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:35:42,193 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:35:42,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 07:35:42,193 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 1 more)] === [2023-11-19 07:35:42,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:35:42,193 INFO L85 PathProgramCache]: Analyzing trace with hash -90996940, now seen corresponding path program 1 times [2023-11-19 07:35:42,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:35:42,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964673093] [2023-11-19 07:35:42,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:35:42,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:35:42,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:35:42,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:35:42,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:35:42,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964673093] [2023-11-19 07:35:42,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964673093] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:35:42,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:35:42,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:35:42,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678082291] [2023-11-19 07:35:42,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:35:42,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:35:42,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:35:42,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:35:42,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:35:42,449 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 280 out of 642 [2023-11-19 07:35:42,451 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 94 transitions, 834 flow. Second operand has 5 states, 5 states have (on average 284.0) internal successors, (1420), 5 states have internal predecessors, (1420), 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) [2023-11-19 07:35:42,451 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:35:42,452 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 280 of 642 [2023-11-19 07:35:42,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:35:43,400 INFO L124 PetriNetUnfolderBase]: 3258/4853 cut-off events. [2023-11-19 07:35:43,400 INFO L125 PetriNetUnfolderBase]: For 16130/16130 co-relation queries the response was YES. [2023-11-19 07:35:43,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18365 conditions, 4853 events. 3258/4853 cut-off events. For 16130/16130 co-relation queries the response was YES. Maximal size of possible extension queue 283. Compared 25127 event pairs, 948 based on Foata normal form. 1/4280 useless extension candidates. Maximal degree in co-relation 18226. Up to 2152 conditions per place. [2023-11-19 07:35:43,442 INFO L140 encePairwiseOnDemand]: 635/642 looper letters, 141 selfloop transitions, 19 changer transitions 14/175 dead transitions. [2023-11-19 07:35:43,443 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 175 transitions, 1795 flow [2023-11-19 07:35:43,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:35:43,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:35:43,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1490 transitions. [2023-11-19 07:35:43,449 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46417445482866043 [2023-11-19 07:35:43,449 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1490 transitions. [2023-11-19 07:35:43,449 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1490 transitions. [2023-11-19 07:35:43,450 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:35:43,451 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1490 transitions. [2023-11-19 07:35:43,455 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 298.0) internal successors, (1490), 5 states have internal predecessors, (1490), 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) [2023-11-19 07:35:43,461 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 642.0) internal successors, (3852), 6 states have internal predecessors, (3852), 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) [2023-11-19 07:35:43,462 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 642.0) internal successors, (3852), 6 states have internal predecessors, (3852), 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) [2023-11-19 07:35:43,463 INFO L175 Difference]: Start difference. First operand has 83 places, 94 transitions, 834 flow. Second operand 5 states and 1490 transitions. [2023-11-19 07:35:43,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 175 transitions, 1795 flow [2023-11-19 07:35:43,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 175 transitions, 1738 flow, removed 5 selfloop flow, removed 2 redundant places. [2023-11-19 07:35:43,571 INFO L231 Difference]: Finished difference. Result has 87 places, 102 transitions, 964 flow [2023-11-19 07:35:43,572 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=642, PETRI_DIFFERENCE_MINUEND_FLOW=808, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=964, PETRI_PLACES=87, PETRI_TRANSITIONS=102} [2023-11-19 07:35:43,572 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 49 predicate places. [2023-11-19 07:35:43,573 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 102 transitions, 964 flow [2023-11-19 07:35:43,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 284.0) internal successors, (1420), 5 states have internal predecessors, (1420), 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) [2023-11-19 07:35:43,574 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:35:43,574 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:35:43,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-19 07:35:43,575 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 1 more)] === [2023-11-19 07:35:43,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:35:43,576 INFO L85 PathProgramCache]: Analyzing trace with hash -982888294, now seen corresponding path program 1 times [2023-11-19 07:35:43,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:35:43,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242128327] [2023-11-19 07:35:43,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:35:43,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:35:43,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:35:43,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:35:43,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:35:43,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242128327] [2023-11-19 07:35:43,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242128327] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:35:43,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:35:43,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:35:43,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731055993] [2023-11-19 07:35:43,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:35:43,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:35:43,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:35:43,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:35:43,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:35:43,839 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 280 out of 642 [2023-11-19 07:35:43,841 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 102 transitions, 964 flow. Second operand has 5 states, 5 states have (on average 284.0) internal successors, (1420), 5 states have internal predecessors, (1420), 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) [2023-11-19 07:35:43,841 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:35:43,841 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 280 of 642 [2023-11-19 07:35:43,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:35:44,997 INFO L124 PetriNetUnfolderBase]: 3329/4919 cut-off events. [2023-11-19 07:35:44,997 INFO L125 PetriNetUnfolderBase]: For 27545/27561 co-relation queries the response was YES. [2023-11-19 07:35:45,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18898 conditions, 4919 events. 3329/4919 cut-off events. For 27545/27561 co-relation queries the response was YES. Maximal size of possible extension queue 283. Compared 25939 event pairs, 656 based on Foata normal form. 1/4507 useless extension candidates. Maximal degree in co-relation 17834. Up to 2410 conditions per place. [2023-11-19 07:35:45,051 INFO L140 encePairwiseOnDemand]: 636/642 looper letters, 153 selfloop transitions, 9 changer transitions 2/165 dead transitions. [2023-11-19 07:35:45,051 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 165 transitions, 1666 flow [2023-11-19 07:35:45,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:35:45,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:35:45,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1494 transitions. [2023-11-19 07:35:45,057 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4654205607476635 [2023-11-19 07:35:45,058 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1494 transitions. [2023-11-19 07:35:45,058 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1494 transitions. [2023-11-19 07:35:45,059 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:35:45,059 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1494 transitions. [2023-11-19 07:35:45,063 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 298.8) internal successors, (1494), 5 states have internal predecessors, (1494), 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) [2023-11-19 07:35:45,070 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 642.0) internal successors, (3852), 6 states have internal predecessors, (3852), 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) [2023-11-19 07:35:45,071 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 642.0) internal successors, (3852), 6 states have internal predecessors, (3852), 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) [2023-11-19 07:35:45,071 INFO L175 Difference]: Start difference. First operand has 87 places, 102 transitions, 964 flow. Second operand 5 states and 1494 transitions. [2023-11-19 07:35:45,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 165 transitions, 1666 flow [2023-11-19 07:35:45,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 165 transitions, 1625 flow, removed 16 selfloop flow, removed 1 redundant places. [2023-11-19 07:35:45,186 INFO L231 Difference]: Finished difference. Result has 93 places, 108 transitions, 1083 flow [2023-11-19 07:35:45,187 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=642, PETRI_DIFFERENCE_MINUEND_FLOW=942, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1083, PETRI_PLACES=93, PETRI_TRANSITIONS=108} [2023-11-19 07:35:45,188 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 55 predicate places. [2023-11-19 07:35:45,189 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 108 transitions, 1083 flow [2023-11-19 07:35:45,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 284.0) internal successors, (1420), 5 states have internal predecessors, (1420), 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) [2023-11-19 07:35:45,189 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:35:45,190 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:35:45,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-19 07:35:45,190 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 1 more)] === [2023-11-19 07:35:45,190 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:35:45,191 INFO L85 PathProgramCache]: Analyzing trace with hash -523451694, now seen corresponding path program 2 times [2023-11-19 07:35:45,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:35:45,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984755626] [2023-11-19 07:35:45,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:35:45,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:35:45,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:35:45,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:35:45,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:35:45,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984755626] [2023-11-19 07:35:45,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984755626] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:35:45,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:35:45,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:35:45,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693113707] [2023-11-19 07:35:45,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:35:45,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:35:45,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:35:45,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:35:45,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:35:45,426 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 279 out of 642 [2023-11-19 07:35:45,427 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 108 transitions, 1083 flow. Second operand has 5 states, 5 states have (on average 283.0) internal successors, (1415), 5 states have internal predecessors, (1415), 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) [2023-11-19 07:35:45,428 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:35:45,428 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 279 of 642 [2023-11-19 07:35:45,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:35:46,479 INFO L124 PetriNetUnfolderBase]: 3318/4986 cut-off events. [2023-11-19 07:35:46,480 INFO L125 PetriNetUnfolderBase]: For 27956/28008 co-relation queries the response was YES. [2023-11-19 07:35:46,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19309 conditions, 4986 events. 3318/4986 cut-off events. For 27956/28008 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 26203 event pairs, 1627 based on Foata normal form. 1/4556 useless extension candidates. Maximal degree in co-relation 18649. Up to 3973 conditions per place. [2023-11-19 07:35:46,600 INFO L140 encePairwiseOnDemand]: 636/642 looper letters, 139 selfloop transitions, 17 changer transitions 2/159 dead transitions. [2023-11-19 07:35:46,600 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 159 transitions, 1613 flow [2023-11-19 07:35:46,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:35:46,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:35:46,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1488 transitions. [2023-11-19 07:35:46,607 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4635514018691589 [2023-11-19 07:35:46,607 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1488 transitions. [2023-11-19 07:35:46,607 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1488 transitions. [2023-11-19 07:35:46,609 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:35:46,609 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1488 transitions. [2023-11-19 07:35:46,613 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 297.6) internal successors, (1488), 5 states have internal predecessors, (1488), 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) [2023-11-19 07:35:46,619 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 642.0) internal successors, (3852), 6 states have internal predecessors, (3852), 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) [2023-11-19 07:35:46,620 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 642.0) internal successors, (3852), 6 states have internal predecessors, (3852), 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) [2023-11-19 07:35:46,621 INFO L175 Difference]: Start difference. First operand has 93 places, 108 transitions, 1083 flow. Second operand 5 states and 1488 transitions. [2023-11-19 07:35:46,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 159 transitions, 1613 flow [2023-11-19 07:35:46,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 159 transitions, 1589 flow, removed 10 selfloop flow, removed 1 redundant places. [2023-11-19 07:35:46,760 INFO L231 Difference]: Finished difference. Result has 99 places, 111 transitions, 1170 flow [2023-11-19 07:35:46,760 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=642, PETRI_DIFFERENCE_MINUEND_FLOW=1064, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1170, PETRI_PLACES=99, PETRI_TRANSITIONS=111} [2023-11-19 07:35:46,761 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 61 predicate places. [2023-11-19 07:35:46,761 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 111 transitions, 1170 flow [2023-11-19 07:35:46,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 283.0) internal successors, (1415), 5 states have internal predecessors, (1415), 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) [2023-11-19 07:35:46,762 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:35:46,762 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:35:46,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-19 07:35:46,762 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 1 more)] === [2023-11-19 07:35:46,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:35:46,763 INFO L85 PathProgramCache]: Analyzing trace with hash -1278632118, now seen corresponding path program 2 times [2023-11-19 07:35:46,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:35:46,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817010462] [2023-11-19 07:35:46,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:35:46,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:35:46,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:35:46,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:35:46,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:35:46,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817010462] [2023-11-19 07:35:46,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817010462] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:35:46,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:35:46,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:35:46,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087255595] [2023-11-19 07:35:46,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:35:46,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:35:46,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:35:46,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:35:46,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:35:47,004 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 279 out of 642 [2023-11-19 07:35:47,006 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 111 transitions, 1170 flow. Second operand has 5 states, 5 states have (on average 283.0) internal successors, (1415), 5 states have internal predecessors, (1415), 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) [2023-11-19 07:35:47,006 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:35:47,006 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 279 of 642 [2023-11-19 07:35:47,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:35:48,105 INFO L124 PetriNetUnfolderBase]: 3326/5006 cut-off events. [2023-11-19 07:35:48,105 INFO L125 PetriNetUnfolderBase]: For 28653/28705 co-relation queries the response was YES. [2023-11-19 07:35:48,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19504 conditions, 5006 events. 3326/5006 cut-off events. For 28653/28705 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 26552 event pairs, 1388 based on Foata normal form. 1/4586 useless extension candidates. Maximal degree in co-relation 18931. Up to 3010 conditions per place. [2023-11-19 07:35:48,157 INFO L140 encePairwiseOnDemand]: 635/642 looper letters, 134 selfloop transitions, 20 changer transitions 10/165 dead transitions. [2023-11-19 07:35:48,157 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 165 transitions, 1797 flow [2023-11-19 07:35:48,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:35:48,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:35:48,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1485 transitions. [2023-11-19 07:35:48,163 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46261682242990654 [2023-11-19 07:35:48,163 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1485 transitions. [2023-11-19 07:35:48,164 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1485 transitions. [2023-11-19 07:35:48,165 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:35:48,165 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1485 transitions. [2023-11-19 07:35:48,169 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 297.0) internal successors, (1485), 5 states have internal predecessors, (1485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:48,175 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 642.0) internal successors, (3852), 6 states have internal predecessors, (3852), 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) [2023-11-19 07:35:48,176 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 642.0) internal successors, (3852), 6 states have internal predecessors, (3852), 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) [2023-11-19 07:35:48,177 INFO L175 Difference]: Start difference. First operand has 99 places, 111 transitions, 1170 flow. Second operand 5 states and 1485 transitions. [2023-11-19 07:35:48,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 165 transitions, 1797 flow [2023-11-19 07:35:48,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 165 transitions, 1765 flow, removed 8 selfloop flow, removed 1 redundant places. [2023-11-19 07:35:48,337 INFO L231 Difference]: Finished difference. Result has 104 places, 116 transitions, 1246 flow [2023-11-19 07:35:48,337 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=642, PETRI_DIFFERENCE_MINUEND_FLOW=1146, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1246, PETRI_PLACES=104, PETRI_TRANSITIONS=116} [2023-11-19 07:35:48,338 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 66 predicate places. [2023-11-19 07:35:48,338 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 116 transitions, 1246 flow [2023-11-19 07:35:48,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 283.0) internal successors, (1415), 5 states have internal predecessors, (1415), 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) [2023-11-19 07:35:48,339 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:35:48,339 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:35:48,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-19 07:35:48,340 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-19 07:35:48,340 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:35:48,340 INFO L85 PathProgramCache]: Analyzing trace with hash -91588310, now seen corresponding path program 3 times [2023-11-19 07:35:48,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:35:48,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972450218] [2023-11-19 07:35:48,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:35:48,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:35:48,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:35:48,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:35:48,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:35:48,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972450218] [2023-11-19 07:35:48,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972450218] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:35:48,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:35:48,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:35:48,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89851384] [2023-11-19 07:35:48,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:35:48,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:35:48,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:35:48,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:35:48,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:35:48,558 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 280 out of 642 [2023-11-19 07:35:48,560 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 116 transitions, 1246 flow. Second operand has 5 states, 5 states have (on average 284.0) internal successors, (1420), 5 states have internal predecessors, (1420), 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) [2023-11-19 07:35:48,560 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:35:48,560 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 280 of 642 [2023-11-19 07:35:48,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:35:49,645 INFO L124 PetriNetUnfolderBase]: 3293/4942 cut-off events. [2023-11-19 07:35:49,645 INFO L125 PetriNetUnfolderBase]: For 30799/30851 co-relation queries the response was YES. [2023-11-19 07:35:49,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19728 conditions, 4942 events. 3293/4942 cut-off events. For 30799/30851 co-relation queries the response was YES. Maximal size of possible extension queue 292. Compared 25908 event pairs, 1528 based on Foata normal form. 1/4522 useless extension candidates. Maximal degree in co-relation 19295. Up to 3010 conditions per place. [2023-11-19 07:35:49,699 INFO L140 encePairwiseOnDemand]: 638/642 looper letters, 121 selfloop transitions, 8 changer transitions 18/148 dead transitions. [2023-11-19 07:35:49,699 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 148 transitions, 1646 flow [2023-11-19 07:35:49,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:35:49,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:35:49,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1477 transitions. [2023-11-19 07:35:49,713 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4601246105919003 [2023-11-19 07:35:49,713 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1477 transitions. [2023-11-19 07:35:49,713 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1477 transitions. [2023-11-19 07:35:49,715 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:35:49,715 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1477 transitions. [2023-11-19 07:35:49,720 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 295.4) internal successors, (1477), 5 states have internal predecessors, (1477), 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) [2023-11-19 07:35:49,727 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 642.0) internal successors, (3852), 6 states have internal predecessors, (3852), 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) [2023-11-19 07:35:49,729 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 642.0) internal successors, (3852), 6 states have internal predecessors, (3852), 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) [2023-11-19 07:35:49,729 INFO L175 Difference]: Start difference. First operand has 104 places, 116 transitions, 1246 flow. Second operand 5 states and 1477 transitions. [2023-11-19 07:35:49,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 148 transitions, 1646 flow [2023-11-19 07:35:49,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 148 transitions, 1614 flow, removed 12 selfloop flow, removed 1 redundant places. [2023-11-19 07:35:49,897 INFO L231 Difference]: Finished difference. Result has 108 places, 112 transitions, 1153 flow [2023-11-19 07:35:49,898 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=642, PETRI_DIFFERENCE_MINUEND_FLOW=1218, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1153, PETRI_PLACES=108, PETRI_TRANSITIONS=112} [2023-11-19 07:35:49,899 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 70 predicate places. [2023-11-19 07:35:49,900 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 112 transitions, 1153 flow [2023-11-19 07:35:49,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 284.0) internal successors, (1420), 5 states have internal predecessors, (1420), 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) [2023-11-19 07:35:49,900 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:35:49,901 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:35:49,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-19 07:35:49,901 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-19 07:35:49,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:35:49,902 INFO L85 PathProgramCache]: Analyzing trace with hash -48486776, now seen corresponding path program 3 times [2023-11-19 07:35:49,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:35:49,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521618394] [2023-11-19 07:35:49,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:35:49,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:35:49,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:35:50,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:35:50,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:35:50,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521618394] [2023-11-19 07:35:50,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521618394] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:35:50,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:35:50,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:35:50,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635155547] [2023-11-19 07:35:50,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:35:50,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:35:50,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:35:50,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:35:50,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:35:50,187 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 279 out of 642 [2023-11-19 07:35:50,189 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 112 transitions, 1153 flow. Second operand has 5 states, 5 states have (on average 283.0) internal successors, (1415), 5 states have internal predecessors, (1415), 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) [2023-11-19 07:35:50,189 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:35:50,190 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 279 of 642 [2023-11-19 07:35:50,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:35:51,386 INFO L124 PetriNetUnfolderBase]: 3988/6093 cut-off events. [2023-11-19 07:35:51,386 INFO L125 PetriNetUnfolderBase]: For 35903/35903 co-relation queries the response was YES. [2023-11-19 07:35:51,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23603 conditions, 6093 events. 3988/6093 cut-off events. For 35903/35903 co-relation queries the response was YES. Maximal size of possible extension queue 376. Compared 35395 event pairs, 362 based on Foata normal form. 1/5569 useless extension candidates. Maximal degree in co-relation 23496. Up to 1958 conditions per place. [2023-11-19 07:35:51,433 INFO L140 encePairwiseOnDemand]: 635/642 looper letters, 178 selfloop transitions, 32 changer transitions 1/212 dead transitions. [2023-11-19 07:35:51,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 212 transitions, 2239 flow [2023-11-19 07:35:51,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:35:51,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:35:51,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1795 transitions. [2023-11-19 07:35:51,441 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46599169262720663 [2023-11-19 07:35:51,441 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1795 transitions. [2023-11-19 07:35:51,441 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1795 transitions. [2023-11-19 07:35:51,443 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:35:51,443 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1795 transitions. [2023-11-19 07:35:51,448 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 299.1666666666667) internal successors, (1795), 6 states have internal predecessors, (1795), 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) [2023-11-19 07:35:51,455 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 642.0) internal successors, (4494), 7 states have internal predecessors, (4494), 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) [2023-11-19 07:35:51,457 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 642.0) internal successors, (4494), 7 states have internal predecessors, (4494), 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) [2023-11-19 07:35:51,457 INFO L175 Difference]: Start difference. First operand has 108 places, 112 transitions, 1153 flow. Second operand 6 states and 1795 transitions. [2023-11-19 07:35:51,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 212 transitions, 2239 flow [2023-11-19 07:35:51,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 212 transitions, 2197 flow, removed 15 selfloop flow, removed 4 redundant places. [2023-11-19 07:35:51,683 INFO L231 Difference]: Finished difference. Result has 109 places, 126 transitions, 1441 flow [2023-11-19 07:35:51,683 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=642, PETRI_DIFFERENCE_MINUEND_FLOW=1133, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1441, PETRI_PLACES=109, PETRI_TRANSITIONS=126} [2023-11-19 07:35:51,684 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 71 predicate places. [2023-11-19 07:35:51,684 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 126 transitions, 1441 flow [2023-11-19 07:35:51,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 283.0) internal successors, (1415), 5 states have internal predecessors, (1415), 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) [2023-11-19 07:35:51,685 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:35:51,685 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:35:51,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-19 07:35:51,686 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-19 07:35:51,686 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:35:51,686 INFO L85 PathProgramCache]: Analyzing trace with hash -801646592, now seen corresponding path program 4 times [2023-11-19 07:35:51,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:35:51,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434976136] [2023-11-19 07:35:51,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:35:51,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:35:51,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:35:51,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:35:51,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:35:51,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434976136] [2023-11-19 07:35:51,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434976136] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:35:51,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:35:51,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:35:51,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567261850] [2023-11-19 07:35:51,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:35:51,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:35:51,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:35:51,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:35:51,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:35:52,073 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 273 out of 642 [2023-11-19 07:35:52,075 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 126 transitions, 1441 flow. Second operand has 5 states, 5 states have (on average 277.0) internal successors, (1385), 5 states have internal predecessors, (1385), 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) [2023-11-19 07:35:52,075 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:35:52,075 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 273 of 642 [2023-11-19 07:35:52,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:35:53,588 INFO L124 PetriNetUnfolderBase]: 6838/10035 cut-off events. [2023-11-19 07:35:53,588 INFO L125 PetriNetUnfolderBase]: For 73652/73652 co-relation queries the response was YES. [2023-11-19 07:35:53,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43296 conditions, 10035 events. 6838/10035 cut-off events. For 73652/73652 co-relation queries the response was YES. Maximal size of possible extension queue 559. Compared 57784 event pairs, 2266 based on Foata normal form. 9/9104 useless extension candidates. Maximal degree in co-relation 42369. Up to 3697 conditions per place. [2023-11-19 07:35:53,826 INFO L140 encePairwiseOnDemand]: 632/642 looper letters, 202 selfloop transitions, 31 changer transitions 8/242 dead transitions. [2023-11-19 07:35:53,826 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 242 transitions, 3262 flow [2023-11-19 07:35:53,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:35:53,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:35:53,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1733 transitions. [2023-11-19 07:35:53,833 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4498961578400831 [2023-11-19 07:35:53,833 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1733 transitions. [2023-11-19 07:35:53,834 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1733 transitions. [2023-11-19 07:35:53,835 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:35:53,835 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1733 transitions. [2023-11-19 07:35:53,840 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 288.8333333333333) internal successors, (1733), 6 states have internal predecessors, (1733), 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) [2023-11-19 07:35:53,847 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 642.0) internal successors, (4494), 7 states have internal predecessors, (4494), 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) [2023-11-19 07:35:53,848 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 642.0) internal successors, (4494), 7 states have internal predecessors, (4494), 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) [2023-11-19 07:35:53,848 INFO L175 Difference]: Start difference. First operand has 109 places, 126 transitions, 1441 flow. Second operand 6 states and 1733 transitions. [2023-11-19 07:35:53,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 242 transitions, 3262 flow [2023-11-19 07:35:54,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 242 transitions, 3170 flow, removed 46 selfloop flow, removed 0 redundant places. [2023-11-19 07:35:54,508 INFO L231 Difference]: Finished difference. Result has 117 places, 142 transitions, 1697 flow [2023-11-19 07:35:54,509 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=642, PETRI_DIFFERENCE_MINUEND_FLOW=1403, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1697, PETRI_PLACES=117, PETRI_TRANSITIONS=142} [2023-11-19 07:35:54,510 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 79 predicate places. [2023-11-19 07:35:54,510 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 142 transitions, 1697 flow [2023-11-19 07:35:54,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 277.0) internal successors, (1385), 5 states have internal predecessors, (1385), 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) [2023-11-19 07:35:54,511 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:35:54,511 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:35:54,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-19 07:35:54,511 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-19 07:35:54,512 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:35:54,512 INFO L85 PathProgramCache]: Analyzing trace with hash -387992162, now seen corresponding path program 4 times [2023-11-19 07:35:54,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:35:54,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543758051] [2023-11-19 07:35:54,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:35:54,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:35:54,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:35:54,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:35:54,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:35:54,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543758051] [2023-11-19 07:35:54,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543758051] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:35:54,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:35:54,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:35:54,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043955315] [2023-11-19 07:35:54,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:35:54,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:35:54,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:35:54,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:35:54,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:35:54,807 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 280 out of 642 [2023-11-19 07:35:54,809 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 142 transitions, 1697 flow. Second operand has 5 states, 5 states have (on average 284.0) internal successors, (1420), 5 states have internal predecessors, (1420), 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) [2023-11-19 07:35:54,810 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:35:54,810 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 280 of 642 [2023-11-19 07:35:54,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:35:56,811 INFO L124 PetriNetUnfolderBase]: 6154/9016 cut-off events. [2023-11-19 07:35:56,811 INFO L125 PetriNetUnfolderBase]: For 59198/59198 co-relation queries the response was YES. [2023-11-19 07:35:56,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38532 conditions, 9016 events. 6154/9016 cut-off events. For 59198/59198 co-relation queries the response was YES. Maximal size of possible extension queue 499. Compared 50324 event pairs, 2719 based on Foata normal form. 1/8115 useless extension candidates. Maximal degree in co-relation 38015. Up to 7477 conditions per place. [2023-11-19 07:35:56,898 INFO L140 encePairwiseOnDemand]: 638/642 looper letters, 146 selfloop transitions, 16 changer transitions 13/176 dead transitions. [2023-11-19 07:35:56,898 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 176 transitions, 2154 flow [2023-11-19 07:35:56,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:35:56,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:35:56,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1480 transitions. [2023-11-19 07:35:56,905 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46105919003115264 [2023-11-19 07:35:56,906 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1480 transitions. [2023-11-19 07:35:56,906 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1480 transitions. [2023-11-19 07:35:56,907 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:35:56,908 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1480 transitions. [2023-11-19 07:35:56,913 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 296.0) internal successors, (1480), 5 states have internal predecessors, (1480), 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) [2023-11-19 07:35:56,921 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 642.0) internal successors, (3852), 6 states have internal predecessors, (3852), 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) [2023-11-19 07:35:56,922 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 642.0) internal successors, (3852), 6 states have internal predecessors, (3852), 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) [2023-11-19 07:35:56,922 INFO L175 Difference]: Start difference. First operand has 117 places, 142 transitions, 1697 flow. Second operand 5 states and 1480 transitions. [2023-11-19 07:35:56,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 176 transitions, 2154 flow [2023-11-19 07:35:57,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 176 transitions, 2100 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-11-19 07:35:57,333 INFO L231 Difference]: Finished difference. Result has 120 places, 138 transitions, 1607 flow [2023-11-19 07:35:57,333 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=642, PETRI_DIFFERENCE_MINUEND_FLOW=1652, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1607, PETRI_PLACES=120, PETRI_TRANSITIONS=138} [2023-11-19 07:35:57,334 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 82 predicate places. [2023-11-19 07:35:57,334 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 138 transitions, 1607 flow [2023-11-19 07:35:57,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 284.0) internal successors, (1420), 5 states have internal predecessors, (1420), 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) [2023-11-19 07:35:57,335 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:35:57,335 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:35:57,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-19 07:35:57,335 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-19 07:35:57,336 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:35:57,336 INFO L85 PathProgramCache]: Analyzing trace with hash 1786816076, now seen corresponding path program 5 times [2023-11-19 07:35:57,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:35:57,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826258347] [2023-11-19 07:35:57,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:35:57,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:35:57,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:35:57,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:35:57,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:35:57,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826258347] [2023-11-19 07:35:57,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826258347] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:35:57,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:35:57,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:35:57,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666195666] [2023-11-19 07:35:57,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:35:57,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:35:57,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:35:57,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:35:57,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:35:57,659 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 280 out of 642 [2023-11-19 07:35:57,660 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 138 transitions, 1607 flow. Second operand has 5 states, 5 states have (on average 284.0) internal successors, (1420), 5 states have internal predecessors, (1420), 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) [2023-11-19 07:35:57,661 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:35:57,661 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 280 of 642 [2023-11-19 07:35:57,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:35:59,340 INFO L124 PetriNetUnfolderBase]: 6162/9080 cut-off events. [2023-11-19 07:35:59,341 INFO L125 PetriNetUnfolderBase]: For 61388/61388 co-relation queries the response was YES. [2023-11-19 07:35:59,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37678 conditions, 9080 events. 6162/9080 cut-off events. For 61388/61388 co-relation queries the response was YES. Maximal size of possible extension queue 504. Compared 50859 event pairs, 1668 based on Foata normal form. 1/8195 useless extension candidates. Maximal degree in co-relation 37539. Up to 4312 conditions per place. [2023-11-19 07:35:59,404 INFO L140 encePairwiseOnDemand]: 635/642 looper letters, 176 selfloop transitions, 25 changer transitions 12/214 dead transitions. [2023-11-19 07:35:59,405 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 214 transitions, 2640 flow [2023-11-19 07:35:59,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:35:59,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:35:59,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1492 transitions. [2023-11-19 07:35:59,411 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.464797507788162 [2023-11-19 07:35:59,412 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1492 transitions. [2023-11-19 07:35:59,412 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1492 transitions. [2023-11-19 07:35:59,414 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:35:59,414 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1492 transitions. [2023-11-19 07:35:59,419 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 298.4) internal successors, (1492), 5 states have internal predecessors, (1492), 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) [2023-11-19 07:35:59,425 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 642.0) internal successors, (3852), 6 states have internal predecessors, (3852), 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) [2023-11-19 07:35:59,426 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 642.0) internal successors, (3852), 6 states have internal predecessors, (3852), 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) [2023-11-19 07:35:59,426 INFO L175 Difference]: Start difference. First operand has 120 places, 138 transitions, 1607 flow. Second operand 5 states and 1492 transitions. [2023-11-19 07:35:59,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 214 transitions, 2640 flow [2023-11-19 07:35:59,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 214 transitions, 2568 flow, removed 8 selfloop flow, removed 5 redundant places. [2023-11-19 07:35:59,855 INFO L231 Difference]: Finished difference. Result has 120 places, 151 transitions, 1870 flow [2023-11-19 07:35:59,855 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=642, PETRI_DIFFERENCE_MINUEND_FLOW=1563, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1870, PETRI_PLACES=120, PETRI_TRANSITIONS=151} [2023-11-19 07:35:59,856 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 82 predicate places. [2023-11-19 07:35:59,856 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 151 transitions, 1870 flow [2023-11-19 07:35:59,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 284.0) internal successors, (1420), 5 states have internal predecessors, (1420), 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) [2023-11-19 07:35:59,857 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:35:59,857 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:35:59,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-19 07:35:59,858 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-19 07:35:59,858 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:35:59,858 INFO L85 PathProgramCache]: Analyzing trace with hash -779045178, now seen corresponding path program 6 times [2023-11-19 07:35:59,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:35:59,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098777300] [2023-11-19 07:35:59,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:35:59,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:35:59,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:00,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:36:00,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:00,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098777300] [2023-11-19 07:36:00,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098777300] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:00,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:00,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:36:00,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230286711] [2023-11-19 07:36:00,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:00,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:36:00,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:00,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:36:00,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:36:00,125 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 279 out of 642 [2023-11-19 07:36:00,127 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 151 transitions, 1870 flow. Second operand has 5 states, 5 states have (on average 283.0) internal successors, (1415), 5 states have internal predecessors, (1415), 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) [2023-11-19 07:36:00,127 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:36:00,127 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 279 of 642 [2023-11-19 07:36:00,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:36:02,266 INFO L124 PetriNetUnfolderBase]: 6105/8984 cut-off events. [2023-11-19 07:36:02,266 INFO L125 PetriNetUnfolderBase]: For 69819/69819 co-relation queries the response was YES. [2023-11-19 07:36:02,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37900 conditions, 8984 events. 6105/8984 cut-off events. For 69819/69819 co-relation queries the response was YES. Maximal size of possible extension queue 503. Compared 50542 event pairs, 2715 based on Foata normal form. 1/8075 useless extension candidates. Maximal degree in co-relation 36959. Up to 7477 conditions per place. [2023-11-19 07:36:02,344 INFO L140 encePairwiseOnDemand]: 635/642 looper letters, 162 selfloop transitions, 29 changer transitions 10/202 dead transitions. [2023-11-19 07:36:02,344 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 202 transitions, 2498 flow [2023-11-19 07:36:02,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:36:02,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:36:02,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1485 transitions. [2023-11-19 07:36:02,351 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46261682242990654 [2023-11-19 07:36:02,351 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1485 transitions. [2023-11-19 07:36:02,351 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1485 transitions. [2023-11-19 07:36:02,352 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:36:02,352 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1485 transitions. [2023-11-19 07:36:02,356 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 297.0) internal successors, (1485), 5 states have internal predecessors, (1485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:02,361 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 642.0) internal successors, (3852), 6 states have internal predecessors, (3852), 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) [2023-11-19 07:36:02,362 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 642.0) internal successors, (3852), 6 states have internal predecessors, (3852), 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) [2023-11-19 07:36:02,362 INFO L175 Difference]: Start difference. First operand has 120 places, 151 transitions, 1870 flow. Second operand 5 states and 1485 transitions. [2023-11-19 07:36:02,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 202 transitions, 2498 flow [2023-11-19 07:36:02,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 202 transitions, 2471 flow, removed 10 selfloop flow, removed 1 redundant places. [2023-11-19 07:36:02,759 INFO L231 Difference]: Finished difference. Result has 125 places, 154 transitions, 1916 flow [2023-11-19 07:36:02,759 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=642, PETRI_DIFFERENCE_MINUEND_FLOW=1851, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1916, PETRI_PLACES=125, PETRI_TRANSITIONS=154} [2023-11-19 07:36:02,759 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 87 predicate places. [2023-11-19 07:36:02,760 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 154 transitions, 1916 flow [2023-11-19 07:36:02,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 283.0) internal successors, (1415), 5 states have internal predecessors, (1415), 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) [2023-11-19 07:36:02,760 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:36:02,760 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:36:02,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-19 07:36:02,761 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-19 07:36:02,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:02,761 INFO L85 PathProgramCache]: Analyzing trace with hash 1715655477, now seen corresponding path program 1 times [2023-11-19 07:36:02,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:02,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358079437] [2023-11-19 07:36:02,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:02,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:02,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:03,044 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:36:03,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:03,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358079437] [2023-11-19 07:36:03,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358079437] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:03,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:03,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:36:03,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736783538] [2023-11-19 07:36:03,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:03,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:36:03,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:03,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:36:03,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:36:03,103 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 279 out of 642