./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/chl-word-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17eb4f3c-63aa-4a0b-a554-4ab0c99f7cde/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17eb4f3c-63aa-4a0b-a554-4ab0c99f7cde/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_17eb4f3c-63aa-4a0b-a554-4ab0c99f7cde/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17eb4f3c-63aa-4a0b-a554-4ab0c99f7cde/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-word-subst.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17eb4f3c-63aa-4a0b-a554-4ab0c99f7cde/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_17eb4f3c-63aa-4a0b-a554-4ab0c99f7cde/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 1c6ecf58df9dd6f4f380af0d7ef563f293bde5430d47e04b9ba5ac44168fc198 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:37:32,639 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:37:32,809 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17eb4f3c-63aa-4a0b-a554-4ab0c99f7cde/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 07:37:32,813 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:37:32,814 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:37:32,857 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:37:32,858 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:37:32,858 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:37:32,859 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:37:32,864 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:37:32,866 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:37:32,866 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:37:32,867 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:37:32,869 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:37:32,869 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:37:32,870 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:37:32,870 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:37:32,870 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:37:32,871 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:37:32,871 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:37:32,872 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:37:32,872 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:37:32,873 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:37:32,873 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:37:32,873 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:37:32,874 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:37:32,875 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:37:32,875 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:37:32,875 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:37:32,876 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:37:32,877 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:37:32,877 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:37:32,878 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:37:32,878 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:37:32,878 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:37:32,878 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:37:32,879 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:37:32,879 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:37:32,879 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:37:32,879 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_17eb4f3c-63aa-4a0b-a554-4ab0c99f7cde/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17eb4f3c-63aa-4a0b-a554-4ab0c99f7cde/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1c6ecf58df9dd6f4f380af0d7ef563f293bde5430d47e04b9ba5ac44168fc198 [2023-11-19 07:37:33,183 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:37:33,215 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:37:33,217 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:37:33,219 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:37:33,220 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:37:33,221 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17eb4f3c-63aa-4a0b-a554-4ab0c99f7cde/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/weaver/chl-word-subst.wvr.c [2023-11-19 07:37:36,302 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:37:36,631 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:37:36,631 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17eb4f3c-63aa-4a0b-a554-4ab0c99f7cde/sv-benchmarks/c/weaver/chl-word-subst.wvr.c [2023-11-19 07:37:36,639 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17eb4f3c-63aa-4a0b-a554-4ab0c99f7cde/bin/uautomizer-verify-uCwYo4JHxu/data/c3656ae2c/6311dfef17224a6ebef7e83c0b3de282/FLAGdded263b8 [2023-11-19 07:37:36,652 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17eb4f3c-63aa-4a0b-a554-4ab0c99f7cde/bin/uautomizer-verify-uCwYo4JHxu/data/c3656ae2c/6311dfef17224a6ebef7e83c0b3de282 [2023-11-19 07:37:36,655 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:37:36,656 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:37:36,657 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:37:36,657 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:37:36,667 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:37:36,668 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:37:36" (1/1) ... [2023-11-19 07:37:36,669 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8eac17b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:36, skipping insertion in model container [2023-11-19 07:37:36,669 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:37:36" (1/1) ... [2023-11-19 07:37:36,705 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:37:36,894 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_17eb4f3c-63aa-4a0b-a554-4ab0c99f7cde/sv-benchmarks/c/weaver/chl-word-subst.wvr.c[3384,3397] [2023-11-19 07:37:36,904 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:37:36,919 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:37:36,948 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_17eb4f3c-63aa-4a0b-a554-4ab0c99f7cde/sv-benchmarks/c/weaver/chl-word-subst.wvr.c[3384,3397] [2023-11-19 07:37:36,958 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:37:36,983 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:37:36,984 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:36 WrapperNode [2023-11-19 07:37:36,984 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:37:36,985 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:37:36,985 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:37:36,985 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:37:36,993 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:36" (1/1) ... [2023-11-19 07:37:37,003 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:36" (1/1) ... [2023-11-19 07:37:37,032 INFO L138 Inliner]: procedures = 25, calls = 45, calls flagged for inlining = 9, calls inlined = 13, statements flattened = 187 [2023-11-19 07:37:37,033 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:37:37,034 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:37:37,034 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:37:37,034 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:37:37,044 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:36" (1/1) ... [2023-11-19 07:37:37,044 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:36" (1/1) ... [2023-11-19 07:37:37,049 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:36" (1/1) ... [2023-11-19 07:37:37,050 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:36" (1/1) ... [2023-11-19 07:37:37,070 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:36" (1/1) ... [2023-11-19 07:37:37,091 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:36" (1/1) ... [2023-11-19 07:37:37,097 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:36" (1/1) ... [2023-11-19 07:37:37,099 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:36" (1/1) ... [2023-11-19 07:37:37,104 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:37:37,108 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:37:37,108 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:37:37,108 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:37:37,109 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:36" (1/1) ... [2023-11-19 07:37:37,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:37:37,136 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17eb4f3c-63aa-4a0b-a554-4ab0c99f7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:37:37,150 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17eb4f3c-63aa-4a0b-a554-4ab0c99f7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:37:37,188 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17eb4f3c-63aa-4a0b-a554-4ab0c99f7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:37:37,201 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:37:37,202 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:37:37,202 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:37:37,202 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:37:37,203 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-19 07:37:37,203 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-19 07:37:37,204 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-19 07:37:37,204 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-19 07:37:37,204 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-19 07:37:37,204 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-19 07:37:37,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:37:37,205 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 07:37:37,205 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:37:37,207 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:37:37,208 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:37:37,210 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 07:37:37,389 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:37:37,391 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:37:37,934 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:37:37,956 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:37:37,960 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-11-19 07:37:37,969 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:37:37 BoogieIcfgContainer [2023-11-19 07:37:37,971 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:37:37,977 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:37:37,977 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:37:37,981 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:37:37,982 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:37:36" (1/3) ... [2023-11-19 07:37:37,982 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fee2026 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:37:37, skipping insertion in model container [2023-11-19 07:37:37,983 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:36" (2/3) ... [2023-11-19 07:37:37,983 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fee2026 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:37:37, skipping insertion in model container [2023-11-19 07:37:37,985 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:37:37" (3/3) ... [2023-11-19 07:37:37,986 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-word-subst.wvr.c [2023-11-19 07:37:37,997 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 07:37:38,010 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:37:38,013 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 07:37:38,013 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:37:38,164 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-19 07:37:38,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 305 places, 324 transitions, 669 flow [2023-11-19 07:37:38,468 INFO L124 PetriNetUnfolderBase]: 29/321 cut-off events. [2023-11-19 07:37:38,469 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-19 07:37:38,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 334 conditions, 321 events. 29/321 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 405 event pairs, 0 based on Foata normal form. 0/291 useless extension candidates. Maximal degree in co-relation 253. Up to 3 conditions per place. [2023-11-19 07:37:38,481 INFO L82 GeneralOperation]: Start removeDead. Operand has 305 places, 324 transitions, 669 flow [2023-11-19 07:37:38,506 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 291 places, 310 transitions, 638 flow [2023-11-19 07:37:38,510 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:37:38,525 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 291 places, 310 transitions, 638 flow [2023-11-19 07:37:38,528 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 291 places, 310 transitions, 638 flow [2023-11-19 07:37:38,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 291 places, 310 transitions, 638 flow [2023-11-19 07:37:38,598 INFO L124 PetriNetUnfolderBase]: 29/310 cut-off events. [2023-11-19 07:37:38,598 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-19 07:37:38,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 323 conditions, 310 events. 29/310 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 407 event pairs, 0 based on Foata normal form. 0/281 useless extension candidates. Maximal degree in co-relation 253. Up to 3 conditions per place. [2023-11-19 07:37:38,608 INFO L119 LiptonReduction]: Number of co-enabled transitions 8448 [2023-11-19 07:37:50,090 INFO L134 LiptonReduction]: Checked pairs total: 10590 [2023-11-19 07:37:50,090 INFO L136 LiptonReduction]: Total number of compositions: 334 [2023-11-19 07:37:50,118 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:37:50,125 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;@467a8177, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:37:50,126 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-19 07:37:50,142 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:37:50,142 INFO L124 PetriNetUnfolderBase]: 11/38 cut-off events. [2023-11-19 07:37:50,142 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-19 07:37:50,143 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:37:50,143 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 07:37:50,144 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 07:37:50,149 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:50,150 INFO L85 PathProgramCache]: Analyzing trace with hash -1884049329, now seen corresponding path program 1 times [2023-11-19 07:37:50,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:50,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851728403] [2023-11-19 07:37:50,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:50,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:50,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:50,815 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 07:37:50,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:37:50,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851728403] [2023-11-19 07:37:50,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851728403] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:37:50,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:37:50,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:37:50,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270345989] [2023-11-19 07:37:50,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:37:50,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:37:50,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:37:50,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:37:50,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:37:50,893 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 299 out of 658 [2023-11-19 07:37:50,901 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 39 transitions, 96 flow. Second operand has 3 states, 3 states have (on average 305.3333333333333) internal successors, (916), 3 states have internal predecessors, (916), 0 states have call successors, (0), 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 07:37:50,902 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:37:50,902 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 299 of 658 [2023-11-19 07:37:50,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:37:51,324 INFO L124 PetriNetUnfolderBase]: 1270/1711 cut-off events. [2023-11-19 07:37:51,325 INFO L125 PetriNetUnfolderBase]: For 98/98 co-relation queries the response was YES. [2023-11-19 07:37:51,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3571 conditions, 1711 events. 1270/1711 cut-off events. For 98/98 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 5671 event pairs, 585 based on Foata normal form. 1/1131 useless extension candidates. Maximal degree in co-relation 2914. Up to 1321 conditions per place. [2023-11-19 07:37:51,338 INFO L140 encePairwiseOnDemand]: 655/658 looper letters, 35 selfloop transitions, 0 changer transitions 26/61 dead transitions. [2023-11-19 07:37:51,338 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 61 transitions, 277 flow [2023-11-19 07:37:51,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:37:51,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:37:51,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 959 transitions. [2023-11-19 07:37:51,367 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4858156028368794 [2023-11-19 07:37:51,368 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 959 transitions. [2023-11-19 07:37:51,368 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 959 transitions. [2023-11-19 07:37:51,373 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:37:51,376 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 959 transitions. [2023-11-19 07:37:51,384 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 319.6666666666667) internal successors, (959), 3 states have internal predecessors, (959), 0 states have call successors, (0), 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 07:37:51,395 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 658.0) internal successors, (2632), 4 states have internal predecessors, (2632), 0 states have call successors, (0), 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 07:37:51,397 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 658.0) internal successors, (2632), 4 states have internal predecessors, (2632), 0 states have call successors, (0), 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 07:37:51,399 INFO L175 Difference]: Start difference. First operand has 38 places, 39 transitions, 96 flow. Second operand 3 states and 959 transitions. [2023-11-19 07:37:51,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 61 transitions, 277 flow [2023-11-19 07:37:51,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 61 transitions, 255 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-19 07:37:51,412 INFO L231 Difference]: Finished difference. Result has 35 places, 35 transitions, 78 flow [2023-11-19 07:37:51,414 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=658, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=78, PETRI_PLACES=35, PETRI_TRANSITIONS=35} [2023-11-19 07:37:51,419 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, -3 predicate places. [2023-11-19 07:37:51,419 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 35 transitions, 78 flow [2023-11-19 07:37:51,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 305.3333333333333) internal successors, (916), 3 states have internal predecessors, (916), 0 states have call successors, (0), 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 07:37:51,420 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:37:51,421 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 07:37:51,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:37:51,422 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 07:37:51,422 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:51,423 INFO L85 PathProgramCache]: Analyzing trace with hash -216487244, now seen corresponding path program 1 times [2023-11-19 07:37:51,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:51,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878256224] [2023-11-19 07:37:51,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:51,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:51,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:52,448 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 07:37:52,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:37:52,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878256224] [2023-11-19 07:37:52,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878256224] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:37:52,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:37:52,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:37:52,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993716418] [2023-11-19 07:37:52,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:37:52,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:37:52,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:37:52,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:37:52,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:37:52,539 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 287 out of 658 [2023-11-19 07:37:52,541 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 35 transitions, 78 flow. Second operand has 5 states, 5 states have (on average 291.0) internal successors, (1455), 5 states have internal predecessors, (1455), 0 states have call successors, (0), 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 07:37:52,542 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:37:52,542 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 287 of 658 [2023-11-19 07:37:52,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:37:52,943 INFO L124 PetriNetUnfolderBase]: 742/1039 cut-off events. [2023-11-19 07:37:52,943 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-11-19 07:37:52,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2116 conditions, 1039 events. 742/1039 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 3790 event pairs, 47 based on Foata normal form. 1/719 useless extension candidates. Maximal degree in co-relation 2112. Up to 750 conditions per place. [2023-11-19 07:37:52,951 INFO L140 encePairwiseOnDemand]: 654/658 looper letters, 65 selfloop transitions, 2 changer transitions 10/77 dead transitions. [2023-11-19 07:37:52,952 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 77 transitions, 327 flow [2023-11-19 07:37:52,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:37:52,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:37:52,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1513 transitions. [2023-11-19 07:37:52,958 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45987841945288754 [2023-11-19 07:37:52,959 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1513 transitions. [2023-11-19 07:37:52,959 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1513 transitions. [2023-11-19 07:37:52,960 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:37:52,960 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1513 transitions. [2023-11-19 07:37:52,965 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 302.6) internal successors, (1513), 5 states have internal predecessors, (1513), 0 states have call successors, (0), 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 07:37:52,974 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 658.0) internal successors, (3948), 6 states have internal predecessors, (3948), 0 states have call successors, (0), 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 07:37:52,978 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 658.0) internal successors, (3948), 6 states have internal predecessors, (3948), 0 states have call successors, (0), 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 07:37:52,978 INFO L175 Difference]: Start difference. First operand has 35 places, 35 transitions, 78 flow. Second operand 5 states and 1513 transitions. [2023-11-19 07:37:52,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 77 transitions, 327 flow [2023-11-19 07:37:52,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 77 transitions, 323 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-11-19 07:37:52,981 INFO L231 Difference]: Finished difference. Result has 38 places, 36 transitions, 91 flow [2023-11-19 07:37:52,982 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=658, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=91, PETRI_PLACES=38, PETRI_TRANSITIONS=36} [2023-11-19 07:37:52,983 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 0 predicate places. [2023-11-19 07:37:52,983 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 36 transitions, 91 flow [2023-11-19 07:37:52,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 291.0) internal successors, (1455), 5 states have internal predecessors, (1455), 0 states have call successors, (0), 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 07:37:52,985 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:37:52,985 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 07:37:52,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:37:52,986 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 07:37:52,986 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:52,986 INFO L85 PathProgramCache]: Analyzing trace with hash -1254817704, now seen corresponding path program 2 times [2023-11-19 07:37:52,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:52,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208803856] [2023-11-19 07:37:52,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:52,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:53,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:53,747 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 07:37:53,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:37:53,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208803856] [2023-11-19 07:37:53,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208803856] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:37:53,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:37:53,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:37:53,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499949532] [2023-11-19 07:37:53,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:37:53,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:37:53,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:37:53,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:37:53,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:37:53,841 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 288 out of 658 [2023-11-19 07:37:53,843 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 36 transitions, 91 flow. Second operand has 5 states, 5 states have (on average 292.0) internal successors, (1460), 5 states have internal predecessors, (1460), 0 states have call successors, (0), 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 07:37:53,844 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:37:53,844 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 288 of 658 [2023-11-19 07:37:53,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:37:54,235 INFO L124 PetriNetUnfolderBase]: 804/1161 cut-off events. [2023-11-19 07:37:54,236 INFO L125 PetriNetUnfolderBase]: For 324/324 co-relation queries the response was YES. [2023-11-19 07:37:54,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2571 conditions, 1161 events. 804/1161 cut-off events. For 324/324 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 4132 event pairs, 393 based on Foata normal form. 1/929 useless extension candidates. Maximal degree in co-relation 2564. Up to 895 conditions per place. [2023-11-19 07:37:54,245 INFO L140 encePairwiseOnDemand]: 654/658 looper letters, 60 selfloop transitions, 3 changer transitions 10/73 dead transitions. [2023-11-19 07:37:54,245 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 73 transitions, 333 flow [2023-11-19 07:37:54,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:37:54,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:37:54,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1513 transitions. [2023-11-19 07:37:54,251 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45987841945288754 [2023-11-19 07:37:54,252 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1513 transitions. [2023-11-19 07:37:54,252 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1513 transitions. [2023-11-19 07:37:54,253 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:37:54,254 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1513 transitions. [2023-11-19 07:37:54,258 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 302.6) internal successors, (1513), 5 states have internal predecessors, (1513), 0 states have call successors, (0), 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 07:37:54,267 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 658.0) internal successors, (3948), 6 states have internal predecessors, (3948), 0 states have call successors, (0), 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 07:37:54,270 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 658.0) internal successors, (3948), 6 states have internal predecessors, (3948), 0 states have call successors, (0), 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 07:37:54,270 INFO L175 Difference]: Start difference. First operand has 38 places, 36 transitions, 91 flow. Second operand 5 states and 1513 transitions. [2023-11-19 07:37:54,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 73 transitions, 333 flow [2023-11-19 07:37:54,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 73 transitions, 324 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-11-19 07:37:54,276 INFO L231 Difference]: Finished difference. Result has 42 places, 37 transitions, 108 flow [2023-11-19 07:37:54,277 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=658, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=108, PETRI_PLACES=42, PETRI_TRANSITIONS=37} [2023-11-19 07:37:54,278 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 4 predicate places. [2023-11-19 07:37:54,282 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 37 transitions, 108 flow [2023-11-19 07:37:54,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 292.0) internal successors, (1460), 5 states have internal predecessors, (1460), 0 states have call successors, (0), 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 07:37:54,283 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:37:54,283 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 07:37:54,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:37:54,284 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 07:37:54,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:54,285 INFO L85 PathProgramCache]: Analyzing trace with hash 833427774, now seen corresponding path program 3 times [2023-11-19 07:37:54,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:54,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004179570] [2023-11-19 07:37:54,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:54,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:54,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:54,863 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 07:37:54,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:37:54,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004179570] [2023-11-19 07:37:54,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004179570] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:37:54,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:37:54,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:37:54,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798524680] [2023-11-19 07:37:54,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:37:54,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:37:54,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:37:54,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:37:54,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:37:54,957 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 287 out of 658 [2023-11-19 07:37:54,959 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 37 transitions, 108 flow. Second operand has 5 states, 5 states have (on average 291.0) internal successors, (1455), 5 states have internal predecessors, (1455), 0 states have call successors, (0), 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 07:37:54,960 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:37:54,960 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 287 of 658 [2023-11-19 07:37:54,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:37:55,374 INFO L124 PetriNetUnfolderBase]: 884/1293 cut-off events. [2023-11-19 07:37:55,374 INFO L125 PetriNetUnfolderBase]: For 760/760 co-relation queries the response was YES. [2023-11-19 07:37:55,377 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3042 conditions, 1293 events. 884/1293 cut-off events. For 760/760 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 5294 event pairs, 77 based on Foata normal form. 1/1033 useless extension candidates. Maximal degree in co-relation 3033. Up to 904 conditions per place. [2023-11-19 07:37:55,385 INFO L140 encePairwiseOnDemand]: 654/658 looper letters, 67 selfloop transitions, 3 changer transitions 11/81 dead transitions. [2023-11-19 07:37:55,385 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 81 transitions, 385 flow [2023-11-19 07:37:55,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:37:55,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:37:55,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1515 transitions. [2023-11-19 07:37:55,391 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46048632218844987 [2023-11-19 07:37:55,392 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1515 transitions. [2023-11-19 07:37:55,392 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1515 transitions. [2023-11-19 07:37:55,393 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:37:55,393 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1515 transitions. [2023-11-19 07:37:55,398 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 303.0) internal successors, (1515), 5 states have internal predecessors, (1515), 0 states have call successors, (0), 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 07:37:55,407 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 658.0) internal successors, (3948), 6 states have internal predecessors, (3948), 0 states have call successors, (0), 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 07:37:55,410 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 658.0) internal successors, (3948), 6 states have internal predecessors, (3948), 0 states have call successors, (0), 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 07:37:55,411 INFO L175 Difference]: Start difference. First operand has 42 places, 37 transitions, 108 flow. Second operand 5 states and 1515 transitions. [2023-11-19 07:37:55,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 81 transitions, 385 flow [2023-11-19 07:37:55,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 81 transitions, 374 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-11-19 07:37:55,415 INFO L231 Difference]: Finished difference. Result has 46 places, 38 transitions, 123 flow [2023-11-19 07:37:55,415 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=658, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=123, PETRI_PLACES=46, PETRI_TRANSITIONS=38} [2023-11-19 07:37:55,416 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 8 predicate places. [2023-11-19 07:37:55,417 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 38 transitions, 123 flow [2023-11-19 07:37:55,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 291.0) internal successors, (1455), 5 states have internal predecessors, (1455), 0 states have call successors, (0), 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 07:37:55,418 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:37:55,418 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 07:37:55,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:37:55,419 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 07:37:55,419 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:55,420 INFO L85 PathProgramCache]: Analyzing trace with hash -20081360, now seen corresponding path program 4 times [2023-11-19 07:37:55,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:55,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878184135] [2023-11-19 07:37:55,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:55,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:55,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:56,038 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 07:37:56,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:37:56,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878184135] [2023-11-19 07:37:56,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878184135] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:37:56,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:37:56,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:37:56,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229119603] [2023-11-19 07:37:56,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:37:56,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:37:56,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:37:56,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:37:56,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:37:56,124 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 288 out of 658 [2023-11-19 07:37:56,126 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 38 transitions, 123 flow. Second operand has 5 states, 5 states have (on average 292.0) internal successors, (1460), 5 states have internal predecessors, (1460), 0 states have call successors, (0), 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 07:37:56,126 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:37:56,127 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 288 of 658 [2023-11-19 07:37:56,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:37:56,554 INFO L124 PetriNetUnfolderBase]: 983/1468 cut-off events. [2023-11-19 07:37:56,554 INFO L125 PetriNetUnfolderBase]: For 1511/1511 co-relation queries the response was YES. [2023-11-19 07:37:56,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3602 conditions, 1468 events. 983/1468 cut-off events. For 1511/1511 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 5851 event pairs, 494 based on Foata normal form. 1/1174 useless extension candidates. Maximal degree in co-relation 3591. Up to 1056 conditions per place. [2023-11-19 07:37:56,568 INFO L140 encePairwiseOnDemand]: 654/658 looper letters, 63 selfloop transitions, 4 changer transitions 11/78 dead transitions. [2023-11-19 07:37:56,568 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 78 transitions, 398 flow [2023-11-19 07:37:56,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:37:56,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:37:56,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1515 transitions. [2023-11-19 07:37:56,575 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46048632218844987 [2023-11-19 07:37:56,575 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1515 transitions. [2023-11-19 07:37:56,575 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1515 transitions. [2023-11-19 07:37:56,576 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:37:56,577 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1515 transitions. [2023-11-19 07:37:56,582 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 303.0) internal successors, (1515), 5 states have internal predecessors, (1515), 0 states have call successors, (0), 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 07:37:56,591 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 658.0) internal successors, (3948), 6 states have internal predecessors, (3948), 0 states have call successors, (0), 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 07:37:56,593 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 658.0) internal successors, (3948), 6 states have internal predecessors, (3948), 0 states have call successors, (0), 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 07:37:56,594 INFO L175 Difference]: Start difference. First operand has 46 places, 38 transitions, 123 flow. Second operand 5 states and 1515 transitions. [2023-11-19 07:37:56,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 78 transitions, 398 flow [2023-11-19 07:37:56,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 78 transitions, 382 flow, removed 6 selfloop flow, removed 3 redundant places. [2023-11-19 07:37:56,601 INFO L231 Difference]: Finished difference. Result has 49 places, 39 transitions, 148 flow [2023-11-19 07:37:56,601 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=658, PETRI_DIFFERENCE_MINUEND_FLOW=117, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=148, PETRI_PLACES=49, PETRI_TRANSITIONS=39} [2023-11-19 07:37:56,605 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 11 predicate places. [2023-11-19 07:37:56,605 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 39 transitions, 148 flow [2023-11-19 07:37:56,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 292.0) internal successors, (1460), 5 states have internal predecessors, (1460), 0 states have call successors, (0), 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 07:37:56,606 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:37:56,607 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 07:37:56,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 07:37:56,607 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 07:37:56,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:56,608 INFO L85 PathProgramCache]: Analyzing trace with hash 1587505052, now seen corresponding path program 5 times [2023-11-19 07:37:56,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:56,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130623689] [2023-11-19 07:37:56,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:56,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:56,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:57,198 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 07:37:57,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:37:57,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130623689] [2023-11-19 07:37:57,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130623689] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:37:57,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:37:57,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:37:57,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564953044] [2023-11-19 07:37:57,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:37:57,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:37:57,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:37:57,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:37:57,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:37:57,300 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 288 out of 658 [2023-11-19 07:37:57,302 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 39 transitions, 148 flow. Second operand has 5 states, 5 states have (on average 292.0) internal successors, (1460), 5 states have internal predecessors, (1460), 0 states have call successors, (0), 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 07:37:57,303 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:37:57,303 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 288 of 658 [2023-11-19 07:37:57,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:37:57,806 INFO L124 PetriNetUnfolderBase]: 977/1448 cut-off events. [2023-11-19 07:37:57,806 INFO L125 PetriNetUnfolderBase]: For 2049/2049 co-relation queries the response was YES. [2023-11-19 07:37:57,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3678 conditions, 1448 events. 977/1448 cut-off events. For 2049/2049 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 5765 event pairs, 563 based on Foata normal form. 1/1156 useless extension candidates. Maximal degree in co-relation 3666. Up to 1179 conditions per place. [2023-11-19 07:37:57,821 INFO L140 encePairwiseOnDemand]: 654/658 looper letters, 65 selfloop transitions, 4 changer transitions 10/79 dead transitions. [2023-11-19 07:37:57,821 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 79 transitions, 407 flow [2023-11-19 07:37:57,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:37:57,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:37:57,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1517 transitions. [2023-11-19 07:37:57,830 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46109422492401214 [2023-11-19 07:37:57,830 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1517 transitions. [2023-11-19 07:37:57,830 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1517 transitions. [2023-11-19 07:37:57,832 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:37:57,832 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1517 transitions. [2023-11-19 07:37:57,837 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 303.4) internal successors, (1517), 5 states have internal predecessors, (1517), 0 states have call successors, (0), 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 07:37:57,845 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 658.0) internal successors, (3948), 6 states have internal predecessors, (3948), 0 states have call successors, (0), 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 07:37:57,847 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 658.0) internal successors, (3948), 6 states have internal predecessors, (3948), 0 states have call successors, (0), 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 07:37:57,847 INFO L175 Difference]: Start difference. First operand has 49 places, 39 transitions, 148 flow. Second operand 5 states and 1517 transitions. [2023-11-19 07:37:57,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 79 transitions, 407 flow [2023-11-19 07:37:57,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 79 transitions, 391 flow, removed 6 selfloop flow, removed 3 redundant places. [2023-11-19 07:37:57,857 INFO L231 Difference]: Finished difference. Result has 51 places, 39 transitions, 147 flow [2023-11-19 07:37:57,857 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=658, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=147, PETRI_PLACES=51, PETRI_TRANSITIONS=39} [2023-11-19 07:37:57,860 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 13 predicate places. [2023-11-19 07:37:57,860 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 39 transitions, 147 flow [2023-11-19 07:37:57,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 292.0) internal successors, (1460), 5 states have internal predecessors, (1460), 0 states have call successors, (0), 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 07:37:57,861 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:37:57,861 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 07:37:57,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 07:37:57,862 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 07:37:57,862 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:57,862 INFO L85 PathProgramCache]: Analyzing trace with hash -196457498, now seen corresponding path program 6 times [2023-11-19 07:37:57,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:57,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696029592] [2023-11-19 07:37:57,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:57,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:57,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:58,554 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 07:37:58,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:37:58,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696029592] [2023-11-19 07:37:58,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696029592] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:37:58,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:37:58,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:37:58,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859554245] [2023-11-19 07:37:58,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:37:58,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:37:58,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:37:58,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:37:58,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:37:58,647 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 288 out of 658 [2023-11-19 07:37:58,649 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 39 transitions, 147 flow. Second operand has 5 states, 5 states have (on average 292.0) internal successors, (1460), 5 states have internal predecessors, (1460), 0 states have call successors, (0), 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 07:37:58,649 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:37:58,649 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 288 of 658 [2023-11-19 07:37:58,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:37:59,123 INFO L124 PetriNetUnfolderBase]: 964/1423 cut-off events. [2023-11-19 07:37:59,124 INFO L125 PetriNetUnfolderBase]: For 1863/1863 co-relation queries the response was YES. [2023-11-19 07:37:59,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3591 conditions, 1423 events. 964/1423 cut-off events. For 1863/1863 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 5477 event pairs, 494 based on Foata normal form. 1/1133 useless extension candidates. Maximal degree in co-relation 3579. Up to 1056 conditions per place. [2023-11-19 07:37:59,137 INFO L140 encePairwiseOnDemand]: 654/658 looper letters, 70 selfloop transitions, 3 changer transitions 10/83 dead transitions. [2023-11-19 07:37:59,138 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 83 transitions, 420 flow [2023-11-19 07:37:59,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:37:59,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:37:59,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1521 transitions. [2023-11-19 07:37:59,145 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4623100303951368 [2023-11-19 07:37:59,145 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1521 transitions. [2023-11-19 07:37:59,148 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1521 transitions. [2023-11-19 07:37:59,149 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:37:59,149 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1521 transitions. [2023-11-19 07:37:59,154 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 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 07:37:59,161 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 658.0) internal successors, (3948), 6 states have internal predecessors, (3948), 0 states have call successors, (0), 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 07:37:59,163 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 658.0) internal successors, (3948), 6 states have internal predecessors, (3948), 0 states have call successors, (0), 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 07:37:59,163 INFO L175 Difference]: Start difference. First operand has 51 places, 39 transitions, 147 flow. Second operand 5 states and 1521 transitions. [2023-11-19 07:37:59,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 83 transitions, 420 flow [2023-11-19 07:37:59,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 83 transitions, 409 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-11-19 07:37:59,172 INFO L231 Difference]: Finished difference. Result has 52 places, 39 transitions, 147 flow [2023-11-19 07:37:59,173 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=658, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=147, PETRI_PLACES=52, PETRI_TRANSITIONS=39} [2023-11-19 07:37:59,174 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 14 predicate places. [2023-11-19 07:37:59,175 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 39 transitions, 147 flow [2023-11-19 07:37:59,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 292.0) internal successors, (1460), 5 states have internal predecessors, (1460), 0 states have call successors, (0), 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 07:37:59,176 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:37:59,176 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 07:37:59,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 07:37:59,176 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 07:37:59,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:59,177 INFO L85 PathProgramCache]: Analyzing trace with hash 430638252, now seen corresponding path program 1 times [2023-11-19 07:37:59,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:59,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611332206] [2023-11-19 07:37:59,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:59,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:59,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:59,298 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 07:37:59,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:37:59,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611332206] [2023-11-19 07:37:59,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611332206] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:37:59,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:37:59,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:37:59,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092383328] [2023-11-19 07:37:59,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:37:59,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:37:59,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:37:59,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:37:59,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:37:59,341 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 293 out of 658 [2023-11-19 07:37:59,343 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 39 transitions, 147 flow. Second operand has 4 states, 4 states have (on average 298.25) internal successors, (1193), 4 states have internal predecessors, (1193), 0 states have call successors, (0), 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 07:37:59,343 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:37:59,343 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 293 of 658 [2023-11-19 07:37:59,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:37:59,870 INFO L124 PetriNetUnfolderBase]: 1250/1858 cut-off events. [2023-11-19 07:37:59,870 INFO L125 PetriNetUnfolderBase]: For 2993/2993 co-relation queries the response was YES. [2023-11-19 07:37:59,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4558 conditions, 1858 events. 1250/1858 cut-off events. For 2993/2993 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 8225 event pairs, 82 based on Foata normal form. 42/1511 useless extension candidates. Maximal degree in co-relation 4546. Up to 1135 conditions per place. [2023-11-19 07:37:59,886 INFO L140 encePairwiseOnDemand]: 654/658 looper letters, 70 selfloop transitions, 6 changer transitions 0/76 dead transitions. [2023-11-19 07:37:59,887 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 76 transitions, 413 flow [2023-11-19 07:37:59,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:37:59,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:37:59,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1245 transitions. [2023-11-19 07:37:59,892 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47302431610942247 [2023-11-19 07:37:59,892 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1245 transitions. [2023-11-19 07:37:59,892 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1245 transitions. [2023-11-19 07:37:59,894 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:37:59,894 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1245 transitions. [2023-11-19 07:37:59,897 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 311.25) internal successors, (1245), 4 states have internal predecessors, (1245), 0 states have call successors, (0), 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 07:37:59,904 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 658.0) internal successors, (3290), 5 states have internal predecessors, (3290), 0 states have call successors, (0), 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 07:37:59,905 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 658.0) internal successors, (3290), 5 states have internal predecessors, (3290), 0 states have call successors, (0), 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 07:37:59,906 INFO L175 Difference]: Start difference. First operand has 52 places, 39 transitions, 147 flow. Second operand 4 states and 1245 transitions. [2023-11-19 07:37:59,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 76 transitions, 413 flow [2023-11-19 07:37:59,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 76 transitions, 404 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-11-19 07:37:59,911 INFO L231 Difference]: Finished difference. Result has 53 places, 44 transitions, 199 flow [2023-11-19 07:37:59,911 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=658, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=199, PETRI_PLACES=53, PETRI_TRANSITIONS=44} [2023-11-19 07:37:59,912 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 15 predicate places. [2023-11-19 07:37:59,912 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 44 transitions, 199 flow [2023-11-19 07:37:59,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 298.25) internal successors, (1193), 4 states have internal predecessors, (1193), 0 states have call successors, (0), 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 07:37:59,913 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:37:59,914 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 07:37:59,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 07:37:59,914 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 07:37:59,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:59,915 INFO L85 PathProgramCache]: Analyzing trace with hash -1132697602, now seen corresponding path program 2 times [2023-11-19 07:37:59,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:59,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107392111] [2023-11-19 07:37:59,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:59,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:59,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:00,021 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 07:38:00,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:38:00,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107392111] [2023-11-19 07:38:00,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107392111] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:38:00,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:38:00,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:38:00,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913375429] [2023-11-19 07:38:00,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:38:00,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:38:00,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:38:00,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:38:00,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:38:00,062 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 293 out of 658 [2023-11-19 07:38:00,064 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 44 transitions, 199 flow. Second operand has 4 states, 4 states have (on average 298.25) internal successors, (1193), 4 states have internal predecessors, (1193), 0 states have call successors, (0), 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 07:38:00,065 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:38:00,065 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 293 of 658 [2023-11-19 07:38:00,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:38:00,433 INFO L124 PetriNetUnfolderBase]: 1145/1709 cut-off events. [2023-11-19 07:38:00,434 INFO L125 PetriNetUnfolderBase]: For 2552/2552 co-relation queries the response was YES. [2023-11-19 07:38:00,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4447 conditions, 1709 events. 1145/1709 cut-off events. For 2552/2552 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 7401 event pairs, 59 based on Foata normal form. 42/1388 useless extension candidates. Maximal degree in co-relation 4435. Up to 1028 conditions per place. [2023-11-19 07:38:00,449 INFO L140 encePairwiseOnDemand]: 654/658 looper letters, 72 selfloop transitions, 8 changer transitions 0/80 dead transitions. [2023-11-19 07:38:00,450 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 80 transitions, 496 flow [2023-11-19 07:38:00,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:38:00,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:38:00,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1243 transitions. [2023-11-19 07:38:00,456 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4722644376899696 [2023-11-19 07:38:00,456 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1243 transitions. [2023-11-19 07:38:00,456 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1243 transitions. [2023-11-19 07:38:00,458 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:38:00,458 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1243 transitions. [2023-11-19 07:38:00,462 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 310.75) internal successors, (1243), 4 states have internal predecessors, (1243), 0 states have call successors, (0), 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 07:38:00,468 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 658.0) internal successors, (3290), 5 states have internal predecessors, (3290), 0 states have call successors, (0), 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 07:38:00,469 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 658.0) internal successors, (3290), 5 states have internal predecessors, (3290), 0 states have call successors, (0), 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 07:38:00,469 INFO L175 Difference]: Start difference. First operand has 53 places, 44 transitions, 199 flow. Second operand 4 states and 1243 transitions. [2023-11-19 07:38:00,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 80 transitions, 496 flow [2023-11-19 07:38:00,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 80 transitions, 496 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:38:00,477 INFO L231 Difference]: Finished difference. Result has 59 places, 49 transitions, 284 flow [2023-11-19 07:38:00,477 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=658, PETRI_DIFFERENCE_MINUEND_FLOW=199, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=284, PETRI_PLACES=59, PETRI_TRANSITIONS=49} [2023-11-19 07:38:00,478 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 21 predicate places. [2023-11-19 07:38:00,478 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 49 transitions, 284 flow [2023-11-19 07:38:00,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 298.25) internal successors, (1193), 4 states have internal predecessors, (1193), 0 states have call successors, (0), 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 07:38:00,479 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:38:00,479 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 07:38:00,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-19 07:38:00,480 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 07:38:00,481 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:38:00,481 INFO L85 PathProgramCache]: Analyzing trace with hash 473700642, now seen corresponding path program 3 times [2023-11-19 07:38:00,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:38:00,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440980528] [2023-11-19 07:38:00,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:00,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:38:00,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:00,622 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 07:38:00,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:38:00,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440980528] [2023-11-19 07:38:00,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440980528] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:38:00,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:38:00,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:38:00,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943208940] [2023-11-19 07:38:00,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:38:00,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:38:00,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:38:00,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:38:00,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:38:00,666 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 291 out of 658 [2023-11-19 07:38:00,668 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 49 transitions, 284 flow. Second operand has 4 states, 4 states have (on average 296.25) internal successors, (1185), 4 states have internal predecessors, (1185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:38:00,668 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:38:00,668 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 291 of 658 [2023-11-19 07:38:00,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:38:01,030 INFO L124 PetriNetUnfolderBase]: 1074/1594 cut-off events. [2023-11-19 07:38:01,031 INFO L125 PetriNetUnfolderBase]: For 3236/3236 co-relation queries the response was YES. [2023-11-19 07:38:01,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4566 conditions, 1594 events. 1074/1594 cut-off events. For 3236/3236 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 6659 event pairs, 267 based on Foata normal form. 8/1265 useless extension candidates. Maximal degree in co-relation 4551. Up to 1264 conditions per place. [2023-11-19 07:38:01,046 INFO L140 encePairwiseOnDemand]: 653/658 looper letters, 68 selfloop transitions, 11 changer transitions 1/80 dead transitions. [2023-11-19 07:38:01,047 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 80 transitions, 537 flow [2023-11-19 07:38:01,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:38:01,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:38:01,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1528 transitions. [2023-11-19 07:38:01,053 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4644376899696049 [2023-11-19 07:38:01,053 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1528 transitions. [2023-11-19 07:38:01,053 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1528 transitions. [2023-11-19 07:38:01,055 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:38:01,055 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1528 transitions. [2023-11-19 07:38:01,058 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 305.6) internal successors, (1528), 5 states have internal predecessors, (1528), 0 states have call successors, (0), 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 07:38:01,066 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 658.0) internal successors, (3948), 6 states have internal predecessors, (3948), 0 states have call successors, (0), 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 07:38:01,067 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 658.0) internal successors, (3948), 6 states have internal predecessors, (3948), 0 states have call successors, (0), 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 07:38:01,067 INFO L175 Difference]: Start difference. First operand has 59 places, 49 transitions, 284 flow. Second operand 5 states and 1528 transitions. [2023-11-19 07:38:01,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 80 transitions, 537 flow [2023-11-19 07:38:01,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 80 transitions, 535 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-11-19 07:38:01,077 INFO L231 Difference]: Finished difference. Result has 64 places, 50 transitions, 315 flow [2023-11-19 07:38:01,078 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=658, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=315, PETRI_PLACES=64, PETRI_TRANSITIONS=50} [2023-11-19 07:38:01,079 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 26 predicate places. [2023-11-19 07:38:01,079 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 50 transitions, 315 flow [2023-11-19 07:38:01,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 296.25) internal successors, (1185), 4 states have internal predecessors, (1185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:38:01,080 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:38:01,080 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 07:38:01,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-19 07:38:01,081 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 07:38:01,082 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:38:01,082 INFO L85 PathProgramCache]: Analyzing trace with hash 2044713877, now seen corresponding path program 1 times [2023-11-19 07:38:01,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:38:01,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318117928] [2023-11-19 07:38:01,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:01,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:38:01,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:01,198 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 07:38:01,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:38:01,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318117928] [2023-11-19 07:38:01,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318117928] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:38:01,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:38:01,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:38:01,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725175836] [2023-11-19 07:38:01,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:38:01,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:38:01,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:38:01,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:38:01,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:38:01,228 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 293 out of 658 [2023-11-19 07:38:01,230 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 50 transitions, 315 flow. Second operand has 4 states, 4 states have (on average 298.25) internal successors, (1193), 4 states have internal predecessors, (1193), 0 states have call successors, (0), 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 07:38:01,230 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:38:01,230 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 293 of 658 [2023-11-19 07:38:01,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:38:01,575 INFO L124 PetriNetUnfolderBase]: 1153/1725 cut-off events. [2023-11-19 07:38:01,576 INFO L125 PetriNetUnfolderBase]: For 4126/4126 co-relation queries the response was YES. [2023-11-19 07:38:01,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4902 conditions, 1725 events. 1153/1725 cut-off events. For 4126/4126 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 7517 event pairs, 202 based on Foata normal form. 16/1366 useless extension candidates. Maximal degree in co-relation 4885. Up to 1402 conditions per place. [2023-11-19 07:38:01,593 INFO L140 encePairwiseOnDemand]: 654/658 looper letters, 65 selfloop transitions, 10 changer transitions 0/75 dead transitions. [2023-11-19 07:38:01,594 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 75 transitions, 547 flow [2023-11-19 07:38:01,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:38:01,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:38:01,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1236 transitions. [2023-11-19 07:38:01,599 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4696048632218845 [2023-11-19 07:38:01,599 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1236 transitions. [2023-11-19 07:38:01,599 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1236 transitions. [2023-11-19 07:38:01,600 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:38:01,601 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1236 transitions. [2023-11-19 07:38:01,604 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 309.0) internal successors, (1236), 4 states have internal predecessors, (1236), 0 states have call successors, (0), 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 07:38:01,609 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 658.0) internal successors, (3290), 5 states have internal predecessors, (3290), 0 states have call successors, (0), 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 07:38:01,609 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 658.0) internal successors, (3290), 5 states have internal predecessors, (3290), 0 states have call successors, (0), 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 07:38:01,610 INFO L175 Difference]: Start difference. First operand has 64 places, 50 transitions, 315 flow. Second operand 4 states and 1236 transitions. [2023-11-19 07:38:01,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 75 transitions, 547 flow [2023-11-19 07:38:01,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 75 transitions, 512 flow, removed 5 selfloop flow, removed 4 redundant places. [2023-11-19 07:38:01,623 INFO L231 Difference]: Finished difference. Result has 64 places, 53 transitions, 342 flow [2023-11-19 07:38:01,623 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=658, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=342, PETRI_PLACES=64, PETRI_TRANSITIONS=53} [2023-11-19 07:38:01,624 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 26 predicate places. [2023-11-19 07:38:01,624 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 53 transitions, 342 flow [2023-11-19 07:38:01,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 298.25) internal successors, (1193), 4 states have internal predecessors, (1193), 0 states have call successors, (0), 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 07:38:01,624 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:38:01,625 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 07:38:01,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-19 07:38:01,625 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 07:38:01,625 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:38:01,626 INFO L85 PathProgramCache]: Analyzing trace with hash 1248577039, now seen corresponding path program 2 times [2023-11-19 07:38:01,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:38:01,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524027825] [2023-11-19 07:38:01,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:01,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:38:01,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:01,749 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 07:38:01,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:38:01,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524027825] [2023-11-19 07:38:01,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524027825] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:38:01,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:38:01,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:38:01,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584092226] [2023-11-19 07:38:01,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:38:01,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:38:01,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:38:01,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:38:01,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:38:01,774 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 291 out of 658 [2023-11-19 07:38:01,776 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 53 transitions, 342 flow. Second operand has 4 states, 4 states have (on average 296.25) internal successors, (1185), 4 states have internal predecessors, (1185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:38:01,776 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:38:01,776 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 291 of 658 [2023-11-19 07:38:01,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:38:02,121 INFO L124 PetriNetUnfolderBase]: 1117/1667 cut-off events. [2023-11-19 07:38:02,121 INFO L125 PetriNetUnfolderBase]: For 2952/2952 co-relation queries the response was YES. [2023-11-19 07:38:02,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4870 conditions, 1667 events. 1117/1667 cut-off events. For 2952/2952 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 7017 event pairs, 315 based on Foata normal form. 10/1316 useless extension candidates. Maximal degree in co-relation 4855. Up to 1247 conditions per place. [2023-11-19 07:38:02,136 INFO L140 encePairwiseOnDemand]: 653/658 looper letters, 71 selfloop transitions, 11 changer transitions 2/84 dead transitions. [2023-11-19 07:38:02,136 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 84 transitions, 606 flow [2023-11-19 07:38:02,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:38:02,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:38:02,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1528 transitions. [2023-11-19 07:38:02,142 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4644376899696049 [2023-11-19 07:38:02,142 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1528 transitions. [2023-11-19 07:38:02,142 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1528 transitions. [2023-11-19 07:38:02,144 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:38:02,144 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1528 transitions. [2023-11-19 07:38:02,147 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 305.6) internal successors, (1528), 5 states have internal predecessors, (1528), 0 states have call successors, (0), 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 07:38:02,153 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 658.0) internal successors, (3948), 6 states have internal predecessors, (3948), 0 states have call successors, (0), 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 07:38:02,154 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 658.0) internal successors, (3948), 6 states have internal predecessors, (3948), 0 states have call successors, (0), 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 07:38:02,155 INFO L175 Difference]: Start difference. First operand has 64 places, 53 transitions, 342 flow. Second operand 5 states and 1528 transitions. [2023-11-19 07:38:02,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 84 transitions, 606 flow [2023-11-19 07:38:02,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 84 transitions, 588 flow, removed 5 selfloop flow, removed 1 redundant places. [2023-11-19 07:38:02,164 INFO L231 Difference]: Finished difference. Result has 68 places, 55 transitions, 375 flow [2023-11-19 07:38:02,164 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=658, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=375, PETRI_PLACES=68, PETRI_TRANSITIONS=55} [2023-11-19 07:38:02,165 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 30 predicate places. [2023-11-19 07:38:02,165 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 55 transitions, 375 flow [2023-11-19 07:38:02,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 296.25) internal successors, (1185), 4 states have internal predecessors, (1185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:38:02,166 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:38:02,166 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 07:38:02,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-19 07:38:02,166 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 07:38:02,166 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:38:02,167 INFO L85 PathProgramCache]: Analyzing trace with hash -1037358933, now seen corresponding path program 3 times [2023-11-19 07:38:02,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:38:02,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227261681] [2023-11-19 07:38:02,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:02,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:38:02,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:02,273 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 07:38:02,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:38:02,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227261681] [2023-11-19 07:38:02,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227261681] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:38:02,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:38:02,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:38:02,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274836613] [2023-11-19 07:38:02,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:38:02,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:38:02,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:38:02,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:38:02,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:38:02,303 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 292 out of 658 [2023-11-19 07:38:02,305 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 55 transitions, 375 flow. Second operand has 4 states, 4 states have (on average 297.25) internal successors, (1189), 4 states have internal predecessors, (1189), 0 states have call successors, (0), 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 07:38:02,305 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:38:02,305 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 292 of 658 [2023-11-19 07:38:02,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:38:02,641 INFO L124 PetriNetUnfolderBase]: 1010/1494 cut-off events. [2023-11-19 07:38:02,641 INFO L125 PetriNetUnfolderBase]: For 3496/3496 co-relation queries the response was YES. [2023-11-19 07:38:02,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4415 conditions, 1494 events. 1010/1494 cut-off events. For 3496/3496 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 5931 event pairs, 444 based on Foata normal form. 18/1191 useless extension candidates. Maximal degree in co-relation 4399. Up to 1130 conditions per place. [2023-11-19 07:38:02,661 INFO L140 encePairwiseOnDemand]: 653/658 looper letters, 85 selfloop transitions, 7 changer transitions 4/96 dead transitions. [2023-11-19 07:38:02,661 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 96 transitions, 657 flow [2023-11-19 07:38:02,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:38:02,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:38:02,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1542 transitions. [2023-11-19 07:38:02,667 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46869300911854106 [2023-11-19 07:38:02,667 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1542 transitions. [2023-11-19 07:38:02,667 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1542 transitions. [2023-11-19 07:38:02,668 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:38:02,669 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1542 transitions. [2023-11-19 07:38:02,672 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 308.4) internal successors, (1542), 5 states have internal predecessors, (1542), 0 states have call successors, (0), 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 07:38:02,679 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 658.0) internal successors, (3948), 6 states have internal predecessors, (3948), 0 states have call successors, (0), 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 07:38:02,680 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 658.0) internal successors, (3948), 6 states have internal predecessors, (3948), 0 states have call successors, (0), 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 07:38:02,680 INFO L175 Difference]: Start difference. First operand has 68 places, 55 transitions, 375 flow. Second operand 5 states and 1542 transitions. [2023-11-19 07:38:02,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 96 transitions, 657 flow [2023-11-19 07:38:02,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 96 transitions, 643 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-11-19 07:38:02,692 INFO L231 Difference]: Finished difference. Result has 72 places, 53 transitions, 344 flow [2023-11-19 07:38:02,693 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=658, PETRI_DIFFERENCE_MINUEND_FLOW=361, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=344, PETRI_PLACES=72, PETRI_TRANSITIONS=53} [2023-11-19 07:38:02,694 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 34 predicate places. [2023-11-19 07:38:02,694 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 53 transitions, 344 flow [2023-11-19 07:38:02,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 297.25) internal successors, (1189), 4 states have internal predecessors, (1189), 0 states have call successors, (0), 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 07:38:02,695 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:38:02,695 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 07:38:02,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-19 07:38:02,696 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 07:38:02,696 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:38:02,696 INFO L85 PathProgramCache]: Analyzing trace with hash -262167249, now seen corresponding path program 4 times [2023-11-19 07:38:02,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:38:02,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574239816] [2023-11-19 07:38:02,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:02,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:38:02,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:02,822 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 07:38:02,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:38:02,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574239816] [2023-11-19 07:38:02,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574239816] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:38:02,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:38:02,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:38:02,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906754386] [2023-11-19 07:38:02,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:38:02,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:38:02,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:38:02,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:38:02,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:38:02,856 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 293 out of 658 [2023-11-19 07:38:02,857 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 53 transitions, 344 flow. Second operand has 4 states, 4 states have (on average 298.25) internal successors, (1193), 4 states have internal predecessors, (1193), 0 states have call successors, (0), 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 07:38:02,858 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:38:02,858 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 293 of 658 [2023-11-19 07:38:02,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:38:03,180 INFO L124 PetriNetUnfolderBase]: 950/1388 cut-off events. [2023-11-19 07:38:03,181 INFO L125 PetriNetUnfolderBase]: For 3342/3342 co-relation queries the response was YES. [2023-11-19 07:38:03,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4061 conditions, 1388 events. 950/1388 cut-off events. For 3342/3342 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 5376 event pairs, 218 based on Foata normal form. 16/1103 useless extension candidates. Maximal degree in co-relation 4044. Up to 1219 conditions per place. [2023-11-19 07:38:03,192 INFO L140 encePairwiseOnDemand]: 654/658 looper letters, 58 selfloop transitions, 10 changer transitions 3/71 dead transitions. [2023-11-19 07:38:03,192 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 71 transitions, 526 flow [2023-11-19 07:38:03,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:38:03,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:38:03,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1233 transitions. [2023-11-19 07:38:03,197 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4684650455927052 [2023-11-19 07:38:03,198 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1233 transitions. [2023-11-19 07:38:03,198 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1233 transitions. [2023-11-19 07:38:03,199 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:38:03,199 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1233 transitions. [2023-11-19 07:38:03,202 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 308.25) internal successors, (1233), 4 states have internal predecessors, (1233), 0 states have call successors, (0), 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 07:38:03,208 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 658.0) internal successors, (3290), 5 states have internal predecessors, (3290), 0 states have call successors, (0), 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 07:38:03,209 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 658.0) internal successors, (3290), 5 states have internal predecessors, (3290), 0 states have call successors, (0), 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 07:38:03,209 INFO L175 Difference]: Start difference. First operand has 72 places, 53 transitions, 344 flow. Second operand 4 states and 1233 transitions. [2023-11-19 07:38:03,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 71 transitions, 526 flow [2023-11-19 07:38:03,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 71 transitions, 500 flow, removed 6 selfloop flow, removed 5 redundant places. [2023-11-19 07:38:03,218 INFO L231 Difference]: Finished difference. Result has 70 places, 52 transitions, 322 flow [2023-11-19 07:38:03,219 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=658, PETRI_DIFFERENCE_MINUEND_FLOW=318, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=322, PETRI_PLACES=70, PETRI_TRANSITIONS=52} [2023-11-19 07:38:03,220 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 32 predicate places. [2023-11-19 07:38:03,220 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 52 transitions, 322 flow [2023-11-19 07:38:03,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 298.25) internal successors, (1193), 4 states have internal predecessors, (1193), 0 states have call successors, (0), 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 07:38:03,220 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:38:03,220 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 07:38:03,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-19 07:38:03,221 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 07:38:03,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:38:03,221 INFO L85 PathProgramCache]: Analyzing trace with hash -2110664752, now seen corresponding path program 4 times [2023-11-19 07:38:03,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:38:03,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364257988] [2023-11-19 07:38:03,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:03,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:38:03,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:03,328 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 07:38:03,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:38:03,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364257988] [2023-11-19 07:38:03,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364257988] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:38:03,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:38:03,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:38:03,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834356361] [2023-11-19 07:38:03,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:38:03,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:38:03,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:38:03,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:38:03,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:38:03,374 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 291 out of 658 [2023-11-19 07:38:03,376 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 52 transitions, 322 flow. Second operand has 4 states, 4 states have (on average 296.25) internal successors, (1185), 4 states have internal predecessors, (1185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:38:03,376 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:38:03,376 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 291 of 658 [2023-11-19 07:38:03,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:38:03,698 INFO L124 PetriNetUnfolderBase]: 936/1372 cut-off events. [2023-11-19 07:38:03,698 INFO L125 PetriNetUnfolderBase]: For 2345/2345 co-relation queries the response was YES. [2023-11-19 07:38:03,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3910 conditions, 1372 events. 936/1372 cut-off events. For 2345/2345 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 5353 event pairs, 209 based on Foata normal form. 14/1083 useless extension candidates. Maximal degree in co-relation 3895. Up to 1271 conditions per place. [2023-11-19 07:38:03,710 INFO L140 encePairwiseOnDemand]: 653/658 looper letters, 52 selfloop transitions, 6 changer transitions 11/69 dead transitions. [2023-11-19 07:38:03,710 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 69 transitions, 496 flow [2023-11-19 07:38:03,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:38:03,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:38:03,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1222 transitions. [2023-11-19 07:38:03,716 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4642857142857143 [2023-11-19 07:38:03,716 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1222 transitions. [2023-11-19 07:38:03,716 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1222 transitions. [2023-11-19 07:38:03,717 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:38:03,718 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1222 transitions. [2023-11-19 07:38:03,721 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 305.5) internal successors, (1222), 4 states have internal predecessors, (1222), 0 states have call successors, (0), 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 07:38:03,726 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 658.0) internal successors, (3290), 5 states have internal predecessors, (3290), 0 states have call successors, (0), 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 07:38:03,727 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 658.0) internal successors, (3290), 5 states have internal predecessors, (3290), 0 states have call successors, (0), 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 07:38:03,728 INFO L175 Difference]: Start difference. First operand has 70 places, 52 transitions, 322 flow. Second operand 4 states and 1222 transitions. [2023-11-19 07:38:03,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 69 transitions, 496 flow [2023-11-19 07:38:03,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 69 transitions, 468 flow, removed 7 selfloop flow, removed 3 redundant places. [2023-11-19 07:38:03,740 INFO L231 Difference]: Finished difference. Result has 70 places, 50 transitions, 290 flow [2023-11-19 07:38:03,740 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=658, PETRI_DIFFERENCE_MINUEND_FLOW=294, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=290, PETRI_PLACES=70, PETRI_TRANSITIONS=50} [2023-11-19 07:38:03,741 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 32 predicate places. [2023-11-19 07:38:03,742 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 50 transitions, 290 flow [2023-11-19 07:38:03,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 296.25) internal successors, (1185), 4 states have internal predecessors, (1185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:38:03,742 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:38:03,742 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 07:38:03,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-19 07:38:03,743 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 07:38:03,743 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:38:03,743 INFO L85 PathProgramCache]: Analyzing trace with hash 1294813291, now seen corresponding path program 5 times [2023-11-19 07:38:03,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:38:03,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938592193] [2023-11-19 07:38:03,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:03,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:38:03,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:03,845 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 07:38:03,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:38:03,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938592193] [2023-11-19 07:38:03,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938592193] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:38:03,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:38:03,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:38:03,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891309160] [2023-11-19 07:38:03,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:38:03,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:38:03,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:38:03,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:38:03,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:38:03,871 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 292 out of 658 [2023-11-19 07:38:03,872 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 50 transitions, 290 flow. Second operand has 4 states, 4 states have (on average 297.25) internal successors, (1189), 4 states have internal predecessors, (1189), 0 states have call successors, (0), 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 07:38:03,872 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:38:03,873 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 292 of 658 [2023-11-19 07:38:03,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:38:04,183 INFO L124 PetriNetUnfolderBase]: 883/1283 cut-off events. [2023-11-19 07:38:04,183 INFO L125 PetriNetUnfolderBase]: For 1713/1713 co-relation queries the response was YES. [2023-11-19 07:38:04,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3609 conditions, 1283 events. 883/1283 cut-off events. For 1713/1713 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 4711 event pairs, 497 based on Foata normal form. 4/1004 useless extension candidates. Maximal degree in co-relation 3595. Up to 1269 conditions per place. [2023-11-19 07:38:04,196 INFO L140 encePairwiseOnDemand]: 655/658 looper letters, 47 selfloop transitions, 0 changer transitions 8/55 dead transitions. [2023-11-19 07:38:04,196 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 55 transitions, 395 flow [2023-11-19 07:38:04,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:38:04,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:38:04,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1211 transitions. [2023-11-19 07:38:04,204 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4601063829787234 [2023-11-19 07:38:04,204 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1211 transitions. [2023-11-19 07:38:04,204 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1211 transitions. [2023-11-19 07:38:04,205 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:38:04,205 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1211 transitions. [2023-11-19 07:38:04,209 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 302.75) internal successors, (1211), 4 states have internal predecessors, (1211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:38:04,216 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 658.0) internal successors, (3290), 5 states have internal predecessors, (3290), 0 states have call successors, (0), 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 07:38:04,217 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 658.0) internal successors, (3290), 5 states have internal predecessors, (3290), 0 states have call successors, (0), 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 07:38:04,218 INFO L175 Difference]: Start difference. First operand has 70 places, 50 transitions, 290 flow. Second operand 4 states and 1211 transitions. [2023-11-19 07:38:04,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 55 transitions, 395 flow [2023-11-19 07:38:04,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 55 transitions, 377 flow, removed 1 selfloop flow, removed 4 redundant places. [2023-11-19 07:38:04,222 INFO L231 Difference]: Finished difference. Result has 67 places, 47 transitions, 235 flow [2023-11-19 07:38:04,222 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=658, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=235, PETRI_PLACES=67, PETRI_TRANSITIONS=47} [2023-11-19 07:38:04,223 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 29 predicate places. [2023-11-19 07:38:04,223 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 47 transitions, 235 flow [2023-11-19 07:38:04,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 297.25) internal successors, (1189), 4 states have internal predecessors, (1189), 0 states have call successors, (0), 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 07:38:04,224 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:38:04,224 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 07:38:04,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-19 07:38:04,224 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 07:38:04,225 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:38:04,225 INFO L85 PathProgramCache]: Analyzing trace with hash 1544470204, now seen corresponding path program 5 times [2023-11-19 07:38:04,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:38:04,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844342322] [2023-11-19 07:38:04,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:04,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:38:04,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:04,341 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 07:38:04,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:38:04,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844342322] [2023-11-19 07:38:04,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844342322] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:38:04,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:38:04,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:38:04,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374739675] [2023-11-19 07:38:04,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:38:04,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:38:04,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:38:04,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:38:04,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:38:04,380 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 292 out of 658 [2023-11-19 07:38:04,382 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 47 transitions, 235 flow. Second operand has 4 states, 4 states have (on average 297.25) internal successors, (1189), 4 states have internal predecessors, (1189), 0 states have call successors, (0), 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 07:38:04,382 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:38:04,382 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 292 of 658 [2023-11-19 07:38:04,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:38:04,634 INFO L124 PetriNetUnfolderBase]: 803/1151 cut-off events. [2023-11-19 07:38:04,634 INFO L125 PetriNetUnfolderBase]: For 905/905 co-relation queries the response was YES. [2023-11-19 07:38:04,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3215 conditions, 1151 events. 803/1151 cut-off events. For 905/905 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3972 event pairs, 444 based on Foata normal form. 10/906 useless extension candidates. Maximal degree in co-relation 3204. Up to 1130 conditions per place. [2023-11-19 07:38:04,643 INFO L140 encePairwiseOnDemand]: 655/658 looper letters, 44 selfloop transitions, 0 changer transitions 10/54 dead transitions. [2023-11-19 07:38:04,644 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 54 transitions, 344 flow [2023-11-19 07:38:04,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:38:04,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:38:04,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1212 transitions. [2023-11-19 07:38:04,648 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46048632218844987 [2023-11-19 07:38:04,649 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1212 transitions. [2023-11-19 07:38:04,649 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1212 transitions. [2023-11-19 07:38:04,650 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:38:04,650 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1212 transitions. [2023-11-19 07:38:04,653 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 303.0) internal successors, (1212), 4 states have internal predecessors, (1212), 0 states have call successors, (0), 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 07:38:04,660 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 658.0) internal successors, (3290), 5 states have internal predecessors, (3290), 0 states have call successors, (0), 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 07:38:04,661 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 658.0) internal successors, (3290), 5 states have internal predecessors, (3290), 0 states have call successors, (0), 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 07:38:04,661 INFO L175 Difference]: Start difference. First operand has 67 places, 47 transitions, 235 flow. Second operand 4 states and 1212 transitions. [2023-11-19 07:38:04,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 54 transitions, 344 flow [2023-11-19 07:38:04,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 54 transitions, 341 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-11-19 07:38:04,665 INFO L231 Difference]: Finished difference. Result has 60 places, 44 transitions, 199 flow [2023-11-19 07:38:04,665 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=658, PETRI_DIFFERENCE_MINUEND_FLOW=217, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=199, PETRI_PLACES=60, PETRI_TRANSITIONS=44} [2023-11-19 07:38:04,665 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 22 predicate places. [2023-11-19 07:38:04,665 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 44 transitions, 199 flow [2023-11-19 07:38:04,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 297.25) internal successors, (1189), 4 states have internal predecessors, (1189), 0 states have call successors, (0), 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 07:38:04,666 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:38:04,666 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, 1] [2023-11-19 07:38:04,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-19 07:38:04,667 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 07:38:04,667 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:38:04,667 INFO L85 PathProgramCache]: Analyzing trace with hash -475569719, now seen corresponding path program 1 times [2023-11-19 07:38:04,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:38:04,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246840123] [2023-11-19 07:38:04,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:04,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:38:04,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:05,567 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 07:38:05,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:38:05,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246840123] [2023-11-19 07:38:05,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246840123] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:38:05,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:38:05,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-19 07:38:05,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123225844] [2023-11-19 07:38:05,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:38:05,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-19 07:38:05,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:38:05,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-19 07:38:05,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-11-19 07:38:06,593 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 263 out of 658 [2023-11-19 07:38:06,596 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 44 transitions, 199 flow. Second operand has 10 states, 10 states have (on average 265.2) internal successors, (2652), 10 states have internal predecessors, (2652), 0 states have call successors, (0), 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 07:38:06,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:38:06,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 263 of 658 [2023-11-19 07:38:06,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:38:07,503 INFO L124 PetriNetUnfolderBase]: 1680/2439 cut-off events. [2023-11-19 07:38:07,503 INFO L125 PetriNetUnfolderBase]: For 1748/1748 co-relation queries the response was YES. [2023-11-19 07:38:07,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6769 conditions, 2439 events. 1680/2439 cut-off events. For 1748/1748 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 10302 event pairs, 368 based on Foata normal form. 1/1910 useless extension candidates. Maximal degree in co-relation 6759. Up to 693 conditions per place. [2023-11-19 07:38:07,525 INFO L140 encePairwiseOnDemand]: 644/658 looper letters, 143 selfloop transitions, 24 changer transitions 26/193 dead transitions. [2023-11-19 07:38:07,553 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 193 transitions, 1172 flow [2023-11-19 07:38:07,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-19 07:38:07,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-19 07:38:07,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 3579 transitions. [2023-11-19 07:38:07,570 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41840074818798223 [2023-11-19 07:38:07,571 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 3579 transitions. [2023-11-19 07:38:07,571 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 3579 transitions. [2023-11-19 07:38:07,574 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:38:07,574 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 3579 transitions. [2023-11-19 07:38:07,583 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 275.3076923076923) internal successors, (3579), 13 states have internal predecessors, (3579), 0 states have call successors, (0), 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 07:38:07,597 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 658.0) internal successors, (9212), 14 states have internal predecessors, (9212), 0 states have call successors, (0), 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 07:38:07,600 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 658.0) internal successors, (9212), 14 states have internal predecessors, (9212), 0 states have call successors, (0), 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 07:38:07,600 INFO L175 Difference]: Start difference. First operand has 60 places, 44 transitions, 199 flow. Second operand 13 states and 3579 transitions. [2023-11-19 07:38:07,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 193 transitions, 1172 flow [2023-11-19 07:38:07,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 193 transitions, 1162 flow, removed 5 selfloop flow, removed 1 redundant places. [2023-11-19 07:38:07,607 INFO L231 Difference]: Finished difference. Result has 75 places, 67 transitions, 430 flow [2023-11-19 07:38:07,607 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=658, PETRI_DIFFERENCE_MINUEND_FLOW=197, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=430, PETRI_PLACES=75, PETRI_TRANSITIONS=67} [2023-11-19 07:38:07,608 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 37 predicate places. [2023-11-19 07:38:07,608 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 67 transitions, 430 flow [2023-11-19 07:38:07,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 265.2) internal successors, (2652), 10 states have internal predecessors, (2652), 0 states have call successors, (0), 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 07:38:07,609 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:38:07,609 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, 1] [2023-11-19 07:38:07,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-19 07:38:07,610 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 07:38:07,610 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:38:07,611 INFO L85 PathProgramCache]: Analyzing trace with hash 2083912667, now seen corresponding path program 2 times [2023-11-19 07:38:07,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:38:07,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073151646] [2023-11-19 07:38:07,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:07,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:38:07,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:08,461 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 07:38:08,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:38:08,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073151646] [2023-11-19 07:38:08,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073151646] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:38:08,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:38:08,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 07:38:08,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893816801] [2023-11-19 07:38:08,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:38:08,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 07:38:08,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:38:08,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 07:38:08,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:38:09,184 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 269 out of 658 [2023-11-19 07:38:09,187 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 67 transitions, 430 flow. Second operand has 9 states, 9 states have (on average 271.44444444444446) internal successors, (2443), 9 states have internal predecessors, (2443), 0 states have call successors, (0), 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 07:38:09,187 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:38:09,187 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 269 of 658 [2023-11-19 07:38:09,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:38:09,861 INFO L124 PetriNetUnfolderBase]: 1568/2301 cut-off events. [2023-11-19 07:38:09,861 INFO L125 PetriNetUnfolderBase]: For 3212/3212 co-relation queries the response was YES. [2023-11-19 07:38:09,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7626 conditions, 2301 events. 1568/2301 cut-off events. For 3212/3212 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 9677 event pairs, 585 based on Foata normal form. 71/2105 useless extension candidates. Maximal degree in co-relation 7606. Up to 731 conditions per place. [2023-11-19 07:38:09,887 INFO L140 encePairwiseOnDemand]: 645/658 looper letters, 104 selfloop transitions, 20 changer transitions 9/133 dead transitions. [2023-11-19 07:38:09,888 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 133 transitions, 1016 flow [2023-11-19 07:38:09,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 07:38:09,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-19 07:38:09,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2252 transitions. [2023-11-19 07:38:09,899 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4278115501519757 [2023-11-19 07:38:09,899 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2252 transitions. [2023-11-19 07:38:09,899 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2252 transitions. [2023-11-19 07:38:09,901 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:38:09,902 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2252 transitions. [2023-11-19 07:38:09,907 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 281.5) internal successors, (2252), 8 states have internal predecessors, (2252), 0 states have call successors, (0), 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 07:38:09,916 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 658.0) internal successors, (5922), 9 states have internal predecessors, (5922), 0 states have call successors, (0), 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 07:38:09,917 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 658.0) internal successors, (5922), 9 states have internal predecessors, (5922), 0 states have call successors, (0), 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 07:38:09,918 INFO L175 Difference]: Start difference. First operand has 75 places, 67 transitions, 430 flow. Second operand 8 states and 2252 transitions. [2023-11-19 07:38:09,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 133 transitions, 1016 flow [2023-11-19 07:38:09,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 133 transitions, 1000 flow, removed 8 selfloop flow, removed 2 redundant places. [2023-11-19 07:38:09,934 INFO L231 Difference]: Finished difference. Result has 80 places, 71 transitions, 537 flow [2023-11-19 07:38:09,934 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=658, PETRI_DIFFERENCE_MINUEND_FLOW=418, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=537, PETRI_PLACES=80, PETRI_TRANSITIONS=71} [2023-11-19 07:38:09,935 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 42 predicate places. [2023-11-19 07:38:09,935 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 71 transitions, 537 flow [2023-11-19 07:38:09,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 271.44444444444446) internal successors, (2443), 9 states have internal predecessors, (2443), 0 states have call successors, (0), 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 07:38:09,936 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:38:09,936 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, 1, 1] [2023-11-19 07:38:09,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-19 07:38:09,937 INFO L420 AbstractCegarLoop]: === Iteration 20 === 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 07:38:09,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:38:09,937 INFO L85 PathProgramCache]: Analyzing trace with hash 1405737802, now seen corresponding path program 1 times [2023-11-19 07:38:09,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:38:09,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721269859] [2023-11-19 07:38:09,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:09,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:38:09,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:10,625 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:38:10,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:38:10,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721269859] [2023-11-19 07:38:10,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721269859] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:38:10,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [857153950] [2023-11-19 07:38:10,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:10,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:38:10,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17eb4f3c-63aa-4a0b-a554-4ab0c99f7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:38:10,632 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17eb4f3c-63aa-4a0b-a554-4ab0c99f7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:38:10,664 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17eb4f3c-63aa-4a0b-a554-4ab0c99f7cde/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:38:10,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:10,832 INFO L262 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-19 07:38:10,839 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:38:11,464 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 07:38:11,465 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 130 treesize of output 95 [2023-11-19 07:38:11,541 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:38:11,542 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:38:11,803 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 07:38:11,804 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 168 treesize of output 132 [2023-11-19 07:38:14,152 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:38:14,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [857153950] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-19 07:38:14,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:38:14,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8, 8] total 23 [2023-11-19 07:38:14,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848499248] [2023-11-19 07:38:14,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:38:14,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-19 07:38:14,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:38:14,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-19 07:38:14,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=497, Unknown=0, NotChecked=0, Total=600 [2023-11-19 07:38:15,831 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 658 [2023-11-19 07:38:15,834 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 71 transitions, 537 flow. Second operand has 10 states, 10 states have (on average 256.3) internal successors, (2563), 10 states have internal predecessors, (2563), 0 states have call successors, (0), 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 07:38:15,834 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:38:15,834 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 658 [2023-11-19 07:38:15,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand